feat: add processIssuing (#152)

* init asset

* add confirmations

* fix

* add processBlock

* clean db

* add getAsset

* fix https://github.com/Bytom/vapor/pull/152#discussion_r291964871 & https://github.com/Bytom/vapor/pull/152#discussion_r291964144

* init AssetCache

* set maxAssetCached

* add rm get

* implement add get remove assetCache

* use assetCache instead of assetMap

* use hashicorp/golang-lru

* add bytom vendor

* fix submodule

* use golang/groupcache/lru

* fix https://github.com/Bytom/vapor/pull/152#discussion_r292805572

* fix asset create

diff --git a/docs/federation/federation.sql b/docs/federation/federation.sql
index f3850d1..04d407f 100644 (file)
--- a/docs/federation/federation.sql
+++ b/docs/federation/federation.sql
@@ -49,7 +49,7 @@ LOCK TABLES `chains` WRITE;
 INSERT INTO `chains`
 (`id`, `name`, `block_height`, `block_hash`, `created_at`, `updated_at`)
 VALUES
 INSERT INTO `chains`
 (`id`, `name`, `block_height`, `block_hash`, `created_at`, `updated_at`)
 VALUES

-(1,'btm',0,'a75483474799ea1aa6bb910a1a5025b4372bf20bef20f246a2c2dc5e12e8a053','2018-09-13 05:10:43','2018-11-27 09:42:06');
+(1,'bytom',0,'a75483474799ea1aa6bb910a1a5025b4372bf20bef20f246a2c2dc5e12e8a053','2018-09-13 05:10:43','2018-11-27 09:42:06');

 
 /*!40000 ALTER TABLE `chains` ENABLE KEYS */;
 UNLOCK TABLES;
 
 /*!40000 ALTER TABLE `chains` ENABLE KEYS */;
 UNLOCK TABLES;


@@ -117,4 +117,33 @@ CREATE TABLE `cross_transaction_signs` (
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
 LOCK TABLES `cross_transaction_signs` WRITE;
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
 LOCK TABLES `cross_transaction_signs` WRITE;

+UNLOCK TABLES;
+
+
+# Dump of table assets
+# ------------------------------------------------------------
+
+DROP TABLE IF EXISTS `assets`;
+
+CREATE TABLE `assets` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `asset_id` varchar(64) NOT NULL,
+  `issuance_program` varchar(64) NOT NULL,
+  `vm_version` int(11) NOT NULL DEFAULT '1',
+  `raw_definition_byte` text,
+  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  `updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `asset_id` (`asset_id`),
+  UNIQUE KEY `asset_meta` (`issuance_program`,`vm_version`,`raw_definition_byte`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+LOCK TABLES `assets` WRITE;
+/*!40000 ALTER TABLE `assets` DISABLE KEYS */;
+
+INSERT INTO `assets` (`id`, `asset_id`, `issuance_program`, `vm_version`, `raw_definition_byte`, `created_at`, `updated_at`)
+VALUES
+  (1,'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff','',1,'7b0a202022646563696d616c73223a20382c0a2020226465736372697074696f6e223a20224279746f6d204f6666696369616c204973737565222c0a2020226e616d65223a202242544d222c0a20202273796d626f6c223a202242544d220a7d','2018-09-13 05:10:43','2018-11-27 09:43:35');
+
+/*!40000 ALTER TABLE `assets` ENABLE KEYS */;

 UNLOCK TABLES;
\ No newline at end of file
 UNLOCK TABLES;
\ No newline at end of file

diff --git a/federation/config/config.go b/federation/config/config.go
index 270f9b8..d09a394 100644 (file)
--- a/federation/config/config.go
+++ b/federation/config/config.go
@@ -69,5 +69,5 @@ type Chain struct {
        Name          string `json:"name"`
        Upstream      string `json:"upstream"`
        SyncSeconds   uint64 `json:"sync_seconds"`
        Name          string `json:"name"`
        Upstream      string `json:"upstream"`
        SyncSeconds   uint64 `json:"sync_seconds"`

-       Confirmations string `json:"confirmations"`
+       Confirmations uint64 `json:"confirmations"`

 }
 }

diff --git a/federation/database/cache.go b/federation/database/cache.go
new file mode 100644 (file)
index 0000000..8a4807d
--- /dev/null
+++ b/federation/database/cache.go
@@ -0,0 +1,33 @@
+package database
+
+import (
+       "github.com/golang/groupcache/lru"
+
+       "github.com/vapor/federation/database/orm"
+)
+
+const maxAssetCached = 1024
+
+type AssetCache struct {
+       lruCache *lru.Cache
+}
+
+func NewAssetCache() *AssetCache {
+       return &AssetCache{lruCache: lru.New(maxAssetCached)}
+}
+
+func (a *AssetCache) Add(assetID string, asset *orm.Asset) {
+       a.lruCache.Add(assetID, asset)
+}
+
+func (a *AssetCache) Get(assetID string) *orm.Asset {
+       if v, ok := a.lruCache.Get(assetID); ok {
+               return v.(*orm.Asset)
+       }
+
+       return nil
+}
+
+func (a *AssetCache) Remove(assetID string) {
+       a.lruCache.Remove(assetID)
+}

diff --git a/federation/database/orm/asset.go b/federation/database/orm/asset.go
new file mode 100644 (file)
index 0000000..21c4bf4
--- /dev/null
+++ b/federation/database/orm/asset.go
@@ -0,0 +1,15 @@
+package orm
+
+import (
+       "github.com/vapor/federation/types"
+)
+
+type Asset struct {
+       ID                uint64 `gorm:"primary_key"`
+       AssetID           string
+       IssuanceProgram   string
+       VMVersion         uint64
+       RawDefinitionByte string
+       CreatedAt         types.Timestamp
+       UpdatedAt         types.Timestamp
+}

diff --git a/federation/synchron/mainchain_keeper.go b/federation/synchron/mainchain_keeper.go
index 4e30d0b..c53a90d 100644 (file)
--- a/federation/synchron/mainchain_keeper.go
+++ b/federation/synchron/mainchain_keeper.go
@@ -1,26 +1,154 @@
 package synchron
 
 import (
 package synchron
 
 import (

+       "encoding/hex"
+       "time"
+
+       btmTypes "github.com/bytom/protocol/bc/types"

        "github.com/jinzhu/gorm"
        "github.com/jinzhu/gorm"

+       log "github.com/sirupsen/logrus"

 
 

+       "github.com/vapor/errors"

        "github.com/vapor/federation/config"
        "github.com/vapor/federation/config"

+       "github.com/vapor/federation/database"
+       "github.com/vapor/federation/database/orm"

        "github.com/vapor/federation/service"
        "github.com/vapor/federation/service"

+       "github.com/vapor/protocol/bc"

 )
 
 type mainchainKeeper struct {
 )
 
 type mainchainKeeper struct {

-       cfg       *config.Chain
-       db        *gorm.DB
-       node      *service.Node
-       chainName string
+       cfg        *config.Chain
+       db         *gorm.DB
+       node       *service.Node
+       chainName  string
+       assetCache *database.AssetCache

 }
 
 func NewMainchainKeeper(db *gorm.DB, chainCfg *config.Chain) *mainchainKeeper {
        return &mainchainKeeper{
 }
 
 func NewMainchainKeeper(db *gorm.DB, chainCfg *config.Chain) *mainchainKeeper {
        return &mainchainKeeper{

-               cfg:       chainCfg,
-               db:        db,
-               node:      service.NewNode(chainCfg.Upstream),
-               chainName: chainCfg.Name,
+               cfg:        chainCfg,
+               db:         db,
+               node:       service.NewNode(chainCfg.Upstream),
+               chainName:  chainCfg.Name,
+               assetCache: database.NewAssetCache(),
+       }
+}
+
+func (m *mainchainKeeper) Run() {
+       ticker := time.NewTicker(time.Duration(m.cfg.SyncSeconds) * time.Second)
+       for ; true; <-ticker.C {
+               for {
+                       isUpdate, err := m.syncBlock()
+                       if err != nil {
+                               log.WithField("error", err).Errorln("blockKeeper fail on process block")
+                               break
+                       }
+
+                       if !isUpdate {
+                               break
+                       }
+               }
+       }
+}
+
+func (m *mainchainKeeper) syncBlock() (bool, error) {
+       chain := &orm.Chain{Name: m.chainName}
+       if err := m.db.Where(chain).First(chain).Error; err != nil {
+               return false, errors.Wrap(err, "query chain")
+       }
+
+       height, err := m.node.GetBlockCount()
+       if err != nil {
+               return false, err
+       }
+
+       if height <= chain.BlockHeight+m.cfg.Confirmations {
+               return false, nil
+       }
+
+       nextBlockStr, txStatus, err := m.node.GetBlockByHeight(chain.BlockHeight + 1)
+       if err != nil {
+               return false, err
+       }
+
+       nextBlock := &btmTypes.Block{}
+       if err := nextBlock.UnmarshalText([]byte(nextBlockStr)); err != nil {
+               return false, errors.New("Unmarshal nextBlock")
+       }
+
+       if nextBlock.PreviousBlockHash.String() != chain.BlockHash {
+               log.WithFields(log.Fields{
+                       "remote PreviousBlockHash": nextBlock.PreviousBlockHash.String(),
+                       "db block_hash":            chain.BlockHash,
+               }).Fatal("BlockHash mismatch")
+               return false, errors.New("BlockHash mismatch")
+       }
+
+       if err := m.tryAttachBlock(chain, nextBlock, txStatus); err != nil {
+               return false, err

        }
        }

+
+       return true, nil
+}
+
+func (m *mainchainKeeper) tryAttachBlock(chain *orm.Chain, block *btmTypes.Block, txStatus *bc.TransactionStatus) error {
+       blockHash := block.Hash()
+       log.WithFields(log.Fields{"block_height": block.Height, "block_hash": blockHash.String()}).Info("start to attachBlock")
+       m.db.Begin()
+       if err := m.processBlock(block); err != nil {
+               m.db.Rollback()
+               return err
+       }
+
+       return m.db.Commit().Error
+}
+
+func (m *mainchainKeeper) processBlock(block *btmTypes.Block) error {
+       if err := m.processIssuing(block.Transactions); err != nil {
+               return err
+       }
+
+       return nil
+}
+
+func (m *mainchainKeeper) processIssuing(txs []*btmTypes.Tx) error {
+       for _, tx := range txs {
+               for _, input := range tx.Inputs {
+                       switch inp := input.TypedInput.(type) {
+                       case *btmTypes.IssuanceInput:
+                               assetID := inp.AssetID()
+                               if _, err := m.getAsset(assetID.String()); err == nil {
+                                       continue
+                               }
+
+                               asset := &orm.Asset{
+                                       AssetID:           assetID.String(),
+                                       IssuanceProgram:   hex.EncodeToString(inp.IssuanceProgram),
+                                       VMVersion:         inp.VMVersion,
+                                       RawDefinitionByte: hex.EncodeToString(inp.AssetDefinition),
+                               }
+                               if err := m.db.Create(asset).Error; err != nil {
+                                       return err
+                               }
+
+                               m.assetCache.Add(asset.AssetID, asset)
+                       }
+               }
+       }
+
+       return nil

 }
 
 }
 

-func (m *mainchainKeeper) Run() {}
+func (m *mainchainKeeper) getAsset(assetID string) (*orm.Asset, error) {
+       if asset := m.assetCache.Get(assetID); asset != nil {
+               return asset, nil
+       }
+
+       asset := &orm.Asset{AssetID: assetID}
+       if err := m.db.Where(asset).First(asset).Error; err != nil {
+               return nil, errors.Wrap(err, "asset not found in memory and mysql")
+       }
+
+       m.assetCache.Add(assetID, asset)
+       return asset, nil
+}

diff --git a/vendor/github.com/bytom/common/address.go b/vendor/github.com/bytom/common/address.go
new file mode 100644 (file)
index 0000000..4c81d94
--- /dev/null
+++ b/vendor/github.com/bytom/common/address.go
@@ -0,0 +1,368 @@
+package common
+
+import (
+       "bytes"
+       "errors"
+       "fmt"
+       "strings"
+
+       "github.com/bytom/common/bech32"
+       "github.com/bytom/consensus"
+)
+
+var (
+       // ErrChecksumMismatch describes an error where decoding failed due
+       // to a bad checksum.
+       ErrChecksumMismatch = errors.New("checksum mismatch")
+
+       // ErrUnknownAddressType describes an error where an address can not
+       // decoded as a specific address type due to the string encoding
+       // begining with an identifier byte unknown to any standard or
+       // registered (via chaincfg.Register) network.
+       ErrUnknownAddressType = errors.New("unknown address type")
+
+       // ErrAddressCollision describes an error where an address can not
+       // be uniquely determined as either a pay-to-pubkey-hash or
+       // pay-to-script-hash address since the leading identifier is used for
+       // describing both address kinds, but for different networks.  Rather
+       // than assuming or defaulting to one or the other, this error is
+       // returned and the caller must decide how to decode the address.
+       ErrAddressCollision = errors.New("address collision")
+
+       // ErrUnsupportedWitnessVer describes an error where a segwit address being
+       // decoded has an unsupported witness version.
+       ErrUnsupportedWitnessVer = errors.New("unsupported witness version")
+
+       // ErrUnsupportedWitnessProgLen describes an error where a segwit address
+       // being decoded has an unsupported witness program length.
+       ErrUnsupportedWitnessProgLen = errors.New("unsupported witness program length")
+)
+
+// Address is an interface type for any type of destination a transaction
+// output may spend to.  This includes pay-to-pubkey (P2PK), pay-to-pubkey-hash
+// (P2PKH), and pay-to-script-hash (P2SH).  Address is designed to be generic
+// enough that other kinds of addresses may be added in the future without
+// changing the decoding and encoding API.
+type Address interface {
+       // String returns the string encoding of the transaction output
+       // destination.
+       //
+       // Please note that String differs subtly from EncodeAddress: String
+       // will return the value as a string without any conversion, while
+       // EncodeAddress may convert destination types (for example,
+       // converting pubkeys to P2PKH addresses) before encoding as a
+       // payment address string.
+       String() string
+
+       // EncodeAddress returns the string encoding of the payment address
+       // associated with the Address value.  See the comment on String
+       // for how this method differs from String.
+       EncodeAddress() string
+
+       // ScriptAddress returns the raw bytes of the address to be used
+       // when inserting the address into a txout's script.
+       ScriptAddress() []byte
+
+       // IsForNet returns whether or not the address is associated with the
+       // passed bytom network.
+       IsForNet(*consensus.Params) bool
+}
+
+// encodeSegWitAddress creates a bech32 encoded address string representation
+// from witness version and witness program.
+func encodeSegWitAddress(hrp string, witnessVersion byte, witnessProgram []byte) (string, error) {
+       // Group the address bytes into 5 bit groups, as this is what is used to
+       // encode each character in the address string.
+       converted, err := bech32.ConvertBits(witnessProgram, 8, 5, true)
+       if err != nil {
+               return "", err
+       }
+
+       // Concatenate the witness version and program, and encode the resulting
+       // bytes using bech32 encoding.
+       combined := make([]byte, len(converted)+1)
+       combined[0] = witnessVersion
+       copy(combined[1:], converted)
+       bech, err := bech32.Bech32Encode(hrp, combined)
+       if err != nil {
+               return "", err
+       }
+
+       // Check validity by decoding the created address.
+       version, program, err := decodeSegWitAddress(bech)
+       if err != nil {
+               return "", fmt.Errorf("invalid segwit address: %v", err)
+       }
+
+       if version != witnessVersion || !bytes.Equal(program, witnessProgram) {
+               return "", fmt.Errorf("invalid segwit address")
+       }
+
+       return bech, nil
+}
+
+// DecodeAddress decodes the string encoding of an address and returns
+// the Address if addr is a valid encoding for a known address type.
+//
+// The bytom network the address is associated with is extracted if possible.
+// When the address does not encode the network, such as in the case of a raw
+// public key, the address will be associated with the passed defaultNet.
+func DecodeAddress(addr string, param *consensus.Params) (Address, error) {
+       // Bech32 encoded segwit addresses start with a human-readable part
+       // (hrp) followed by '1'. For Bytom mainnet the hrp is "bm", and for
+       // testnet it is "tm". If the address string has a prefix that matches
+       // one of the prefixes for the known networks, we try to decode it as
+       // a segwit address.
+       oneIndex := strings.LastIndexByte(addr, '1')
+       if oneIndex > 1 {
+               prefix := addr[:oneIndex+1]
+               if consensus.IsBech32SegwitPrefix(prefix, param) {
+                       witnessVer, witnessProg, err := decodeSegWitAddress(addr)
+                       if err != nil {
+                               return nil, err
+                       }
+
+                       // We currently only support P2WPKH and P2WSH, which is
+                       // witness version 0.
+                       if witnessVer != 0 {
+                               return nil, ErrUnsupportedWitnessVer
+                       }
+
+                       // The HRP is everything before the found '1'.
+                       hrp := prefix[:len(prefix)-1]
+
+                       switch len(witnessProg) {
+                       case 20:
+                               return newAddressWitnessPubKeyHash(hrp, witnessProg)
+                       case 32:
+                               return newAddressWitnessScriptHash(hrp, witnessProg)
+                       default:
+                               return nil, ErrUnsupportedWitnessProgLen
+                       }
+               }
+       }
+       return nil, ErrUnknownAddressType
+}
+
+// decodeSegWitAddress parses a bech32 encoded segwit address string and
+// returns the witness version and witness program byte representation.
+func decodeSegWitAddress(address string) (byte, []byte, error) {
+       // Decode the bech32 encoded address.
+       _, data, err := bech32.Bech32Decode(address)
+       if err != nil {
+               return 0, nil, err
+       }
+
+       // The first byte of the decoded address is the witness version, it must
+       // exist.
+       if len(data) < 1 {
+               return 0, nil, fmt.Errorf("no witness version")
+       }
+
+       // ...and be <= 16.
+       version := data[0]
+       if version > 16 {
+               return 0, nil, fmt.Errorf("invalid witness version: %v", version)
+       }
+
+       // The remaining characters of the address returned are grouped into
+       // words of 5 bits. In order to restore the original witness program
+       // bytes, we'll need to regroup into 8 bit words.
+       regrouped, err := bech32.ConvertBits(data[1:], 5, 8, false)
+       if err != nil {
+               return 0, nil, err
+       }
+
+       // The regrouped data must be between 2 and 40 bytes.
+       if len(regrouped) < 2 || len(regrouped) > 40 {
+               return 0, nil, fmt.Errorf("invalid data length")
+       }
+
+       // For witness version 0, address MUST be exactly 20 or 32 bytes.
+       if version == 0 && len(regrouped) != 20 && len(regrouped) != 32 {
+               return 0, nil, fmt.Errorf("invalid data length for witness "+
+                       "version 0: %v", len(regrouped))
+       }
+
+       return version, regrouped, nil
+}
+
+// AddressWitnessPubKeyHash is an Address for a pay-to-witness-pubkey-hash
+// (P2WPKH) output. See BIP 173 for further details regarding native segregated
+// witness address encoding:
+// https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki
+type AddressWitnessPubKeyHash struct {
+       hrp            string
+       witnessVersion byte
+       witnessProgram [20]byte
+}
+
+// NewAddressWitnessPubKeyHash returns a new AddressWitnessPubKeyHash.
+func NewAddressWitnessPubKeyHash(witnessProg []byte, param *consensus.Params) (*AddressWitnessPubKeyHash, error) {
+       return newAddressWitnessPubKeyHash(param.Bech32HRPSegwit, witnessProg)
+}
+
+// newAddressWitnessPubKeyHash is an internal helper function to create an
+// AddressWitnessPubKeyHash with a known human-readable part, rather than
+// looking it up through its parameters.
+func newAddressWitnessPubKeyHash(hrp string, witnessProg []byte) (*AddressWitnessPubKeyHash, error) {
+       // Check for valid program length for witness version 0, which is 20
+       // for P2WPKH.
+       if len(witnessProg) != 20 {
+               return nil, errors.New("witness program must be 20 bytes for p2wpkh")
+       }
+
+       addr := &AddressWitnessPubKeyHash{
+               hrp:            strings.ToLower(hrp),
+               witnessVersion: 0x00,
+       }
+
+       copy(addr.witnessProgram[:], witnessProg)
+
+       return addr, nil
+}
+
+// EncodeAddress returns the bech32 string encoding of an
+// AddressWitnessPubKeyHash.
+// Part of the Address interface.
+func (a *AddressWitnessPubKeyHash) EncodeAddress() string {
+       str, err := encodeSegWitAddress(a.hrp, a.witnessVersion,
+               a.witnessProgram[:])
+       if err != nil {
+               return ""
+       }
+       return str
+}
+
+// ScriptAddress returns the witness program for this address.
+// Part of the Address interface.
+func (a *AddressWitnessPubKeyHash) ScriptAddress() []byte {
+       return a.witnessProgram[:]
+}
+
+// IsForNet returns whether or not the AddressWitnessPubKeyHash is associated
+// with the passed bitcoin network.
+// Part of the Address interface.
+func (a *AddressWitnessPubKeyHash) IsForNet(param *consensus.Params) bool {
+       return a.hrp == param.Bech32HRPSegwit
+}
+
+// String returns a human-readable string for the AddressWitnessPubKeyHash.
+// This is equivalent to calling EncodeAddress, but is provided so the type
+// can be used as a fmt.Stringer.
+// Part of the Address interface.
+func (a *AddressWitnessPubKeyHash) String() string {
+       return a.EncodeAddress()
+}
+
+// Hrp returns the human-readable part of the bech32 encoded
+// AddressWitnessPubKeyHash.
+func (a *AddressWitnessPubKeyHash) Hrp() string {
+       return a.hrp
+}
+
+// WitnessVersion returns the witness version of the AddressWitnessPubKeyHash.
+func (a *AddressWitnessPubKeyHash) WitnessVersion() byte {
+       return a.witnessVersion
+}
+
+// WitnessProgram returns the witness program of the AddressWitnessPubKeyHash.
+func (a *AddressWitnessPubKeyHash) WitnessProgram() []byte {
+       return a.witnessProgram[:]
+}
+
+// Hash160 returns the witness program of the AddressWitnessPubKeyHash as a
+// byte array.
+func (a *AddressWitnessPubKeyHash) Hash160() *[20]byte {
+       return &a.witnessProgram
+}
+
+// AddressWitnessScriptHash is an Address for a pay-to-witness-script-hash
+// (P2WSH) output. See BIP 173 for further details regarding native segregated
+// witness address encoding:
+// https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki
+type AddressWitnessScriptHash struct {
+       hrp            string
+       witnessVersion byte
+       witnessProgram [32]byte
+}
+
+// NewAddressWitnessScriptHash returns a new AddressWitnessPubKeyHash.
+func NewAddressWitnessScriptHash(witnessProg []byte, param *consensus.Params) (*AddressWitnessScriptHash, error) {
+       return newAddressWitnessScriptHash(param.Bech32HRPSegwit, witnessProg)
+}
+
+// newAddressWitnessScriptHash is an internal helper function to create an
+// AddressWitnessScriptHash with a known human-readable part, rather than
+// looking it up through its parameters.
+func newAddressWitnessScriptHash(hrp string, witnessProg []byte) (*AddressWitnessScriptHash, error) {
+       // Check for valid program length for witness version 0, which is 32
+       // for P2WSH.
+       if len(witnessProg) != 32 {
+               return nil, errors.New("witness program must be 32 bytes for p2wsh")
+       }
+
+       addr := &AddressWitnessScriptHash{
+               hrp:            strings.ToLower(hrp),
+               witnessVersion: 0x00,
+       }
+
+       copy(addr.witnessProgram[:], witnessProg)
+
+       return addr, nil
+}
+
+// EncodeAddress returns the bech32 string encoding of an
+// AddressWitnessScriptHash.
+// Part of the Address interface.
+func (a *AddressWitnessScriptHash) EncodeAddress() string {
+       str, err := encodeSegWitAddress(a.hrp, a.witnessVersion,
+               a.witnessProgram[:])
+       if err != nil {
+               return ""
+       }
+       return str
+}
+
+// ScriptAddress returns the witness program for this address.
+// Part of the Address interface.
+func (a *AddressWitnessScriptHash) ScriptAddress() []byte {
+       return a.witnessProgram[:]
+}
+
+// IsForNet returns whether or not the AddressWitnessScriptHash is associated
+// with the passed bytom network.
+// Part of the Address interface.
+func (a *AddressWitnessScriptHash) IsForNet(param *consensus.Params) bool {
+       return a.hrp == param.Bech32HRPSegwit
+}
+
+// String returns a human-readable string for the AddressWitnessScriptHash.
+// This is equivalent to calling EncodeAddress, but is provided so the type
+// can be used as a fmt.Stringer.
+// Part of the Address interface.
+func (a *AddressWitnessScriptHash) String() string {
+       return a.EncodeAddress()
+}
+
+// Hrp returns the human-readable part of the bech32 encoded
+// AddressWitnessScriptHash.
+func (a *AddressWitnessScriptHash) Hrp() string {
+       return a.hrp
+}
+
+// WitnessVersion returns the witness version of the AddressWitnessScriptHash.
+func (a *AddressWitnessScriptHash) WitnessVersion() byte {
+       return a.witnessVersion
+}
+
+// WitnessProgram returns the witness program of the AddressWitnessScriptHash.
+func (a *AddressWitnessScriptHash) WitnessProgram() []byte {
+       return a.witnessProgram[:]
+}
+
+// Sha256 returns the witness program of the AddressWitnessPubKeyHash as a
+// byte array.
+func (a *AddressWitnessScriptHash) Sha256() *[32]byte {
+       return &a.witnessProgram
+}

diff --git a/vendor/github.com/bytom/common/address_test.go b/vendor/github.com/bytom/common/address_test.go
new file mode 100644 (file)
index 0000000..918d6c6
--- /dev/null
+++ b/vendor/github.com/bytom/common/address_test.go
@@ -0,0 +1,382 @@
+package common
+
+import (
+       "bytes"
+       "fmt"
+       "reflect"
+       "strings"
+       "testing"
+
+       "github.com/bytom/common/bech32"
+       "github.com/bytom/consensus"
+)
+
+func TestAddresses(t *testing.T) {
+       tests := []struct {
+               name    string
+               addr    string
+               encoded string
+               valid   bool
+               result  Address
+               f       func() (Address, error)
+               net     *consensus.Params
+       }{
+               // Segwit address tests.
+               {
+                       name:    "segwit mainnet p2wpkh v0",
+                       addr:    "BM1QW508D6QEJXTDG4Y5R3ZARVARY0C5XW7K23GYYF",
+                       encoded: "bm1qw508d6qejxtdg4y5r3zarvary0c5xw7k23gyyf",
+                       valid:   true,
+                       result: tstAddressWitnessPubKeyHash(
+                               0,
+                               [20]byte{
+                                       0x75, 0x1e, 0x76, 0xe8, 0x19, 0x91, 0x96, 0xd4, 0x54, 0x94,
+                                       0x1c, 0x45, 0xd1, 0xb3, 0xa3, 0x23, 0xf1, 0x43, 0x3b, 0xd6},
+                               consensus.MainNetParams.Bech32HRPSegwit),
+                       f: func() (Address, error) {
+                               pkHash := []byte{
+                                       0x75, 0x1e, 0x76, 0xe8, 0x19, 0x91, 0x96, 0xd4, 0x54, 0x94,
+                                       0x1c, 0x45, 0xd1, 0xb3, 0xa3, 0x23, 0xf1, 0x43, 0x3b, 0xd6}
+                               return NewAddressWitnessPubKeyHash(pkHash, &consensus.MainNetParams)
+                       },
+                       net: &consensus.MainNetParams,
+               },
+               {
+                       name:    "segwit mainnet p2wsh v0",
+                       addr:    "bm1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3qk5egtg",
+                       encoded: "bm1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3qk5egtg",
+                       valid:   true,
+                       result: tstAddressWitnessScriptHash(
+                               0,
+                               [32]byte{
+                                       0x18, 0x63, 0x14, 0x3c, 0x14, 0xc5, 0x16, 0x68,
+                                       0x04, 0xbd, 0x19, 0x20, 0x33, 0x56, 0xda, 0x13,
+                                       0x6c, 0x98, 0x56, 0x78, 0xcd, 0x4d, 0x27, 0xa1,
+                                       0xb8, 0xc6, 0x32, 0x96, 0x04, 0x90, 0x32, 0x62},
+                               consensus.MainNetParams.Bech32HRPSegwit),
+                       f: func() (Address, error) {
+                               scriptHash := []byte{
+                                       0x18, 0x63, 0x14, 0x3c, 0x14, 0xc5, 0x16, 0x68,
+                                       0x04, 0xbd, 0x19, 0x20, 0x33, 0x56, 0xda, 0x13,
+                                       0x6c, 0x98, 0x56, 0x78, 0xcd, 0x4d, 0x27, 0xa1,
+                                       0xb8, 0xc6, 0x32, 0x96, 0x04, 0x90, 0x32, 0x62}
+                               return NewAddressWitnessScriptHash(scriptHash, &consensus.MainNetParams)
+                       },
+                       net: &consensus.MainNetParams,
+               },
+               {
+                       name:    "segwit testnet p2wpkh v0",
+                       addr:    "tm1qw508d6qejxtdg4y5r3zarvary0c5xw7kw8fqyc",
+                       encoded: "tm1qw508d6qejxtdg4y5r3zarvary0c5xw7kw8fqyc",
+                       valid:   true,
+                       result: tstAddressWitnessPubKeyHash(
+                               0,
+                               [20]byte{
+                                       0x75, 0x1e, 0x76, 0xe8, 0x19, 0x91, 0x96, 0xd4, 0x54, 0x94,
+                                       0x1c, 0x45, 0xd1, 0xb3, 0xa3, 0x23, 0xf1, 0x43, 0x3b, 0xd6},
+                               consensus.TestNetParams.Bech32HRPSegwit),
+                       f: func() (Address, error) {
+                               pkHash := []byte{
+                                       0x75, 0x1e, 0x76, 0xe8, 0x19, 0x91, 0x96, 0xd4, 0x54, 0x94,
+                                       0x1c, 0x45, 0xd1, 0xb3, 0xa3, 0x23, 0xf1, 0x43, 0x3b, 0xd6}
+                               return NewAddressWitnessPubKeyHash(pkHash, &consensus.TestNetParams)
+                       },
+                       net: &consensus.TestNetParams,
+               },
+               {
+                       name:    "segwit testnet p2wsh v0",
+                       addr:    "tm1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3qqq379v",
+                       encoded: "tm1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3qqq379v",
+                       valid:   true,
+                       result: tstAddressWitnessScriptHash(
+                               0,
+                               [32]byte{
+                                       0x18, 0x63, 0x14, 0x3c, 0x14, 0xc5, 0x16, 0x68,
+                                       0x04, 0xbd, 0x19, 0x20, 0x33, 0x56, 0xda, 0x13,
+                                       0x6c, 0x98, 0x56, 0x78, 0xcd, 0x4d, 0x27, 0xa1,
+                                       0xb8, 0xc6, 0x32, 0x96, 0x04, 0x90, 0x32, 0x62},
+                               consensus.TestNetParams.Bech32HRPSegwit),
+                       f: func() (Address, error) {
+                               scriptHash := []byte{
+                                       0x18, 0x63, 0x14, 0x3c, 0x14, 0xc5, 0x16, 0x68,
+                                       0x04, 0xbd, 0x19, 0x20, 0x33, 0x56, 0xda, 0x13,
+                                       0x6c, 0x98, 0x56, 0x78, 0xcd, 0x4d, 0x27, 0xa1,
+                                       0xb8, 0xc6, 0x32, 0x96, 0x04, 0x90, 0x32, 0x62}
+                               return NewAddressWitnessScriptHash(scriptHash, &consensus.TestNetParams)
+                       },
+                       net: &consensus.TestNetParams,
+               },
+               {
+                       name:    "segwit testnet p2wsh witness v0",
+                       addr:    "tm1qqqqqp399et2xygdj5xreqhjjvcmzhxw4aywxecjdzew6hylgvsesvkesyk",
+                       encoded: "tm1qqqqqp399et2xygdj5xreqhjjvcmzhxw4aywxecjdzew6hylgvsesvkesyk",
+                       valid:   true,
+                       result: tstAddressWitnessScriptHash(
+                               0,
+                               [32]byte{
+                                       0x00, 0x00, 0x00, 0xc4, 0xa5, 0xca, 0xd4, 0x62,
+                                       0x21, 0xb2, 0xa1, 0x87, 0x90, 0x5e, 0x52, 0x66,
+                                       0x36, 0x2b, 0x99, 0xd5, 0xe9, 0x1c, 0x6c, 0xe2,
+                                       0x4d, 0x16, 0x5d, 0xab, 0x93, 0xe8, 0x64, 0x33},
+                               consensus.TestNetParams.Bech32HRPSegwit),
+                       f: func() (Address, error) {
+                               scriptHash := []byte{
+                                       0x00, 0x00, 0x00, 0xc4, 0xa5, 0xca, 0xd4, 0x62,
+                                       0x21, 0xb2, 0xa1, 0x87, 0x90, 0x5e, 0x52, 0x66,
+                                       0x36, 0x2b, 0x99, 0xd5, 0xe9, 0x1c, 0x6c, 0xe2,
+                                       0x4d, 0x16, 0x5d, 0xab, 0x93, 0xe8, 0x64, 0x33}
+                               return NewAddressWitnessScriptHash(scriptHash, &consensus.TestNetParams)
+                       },
+                       net: &consensus.TestNetParams,
+               },
+               // Unsupported witness versions (version 0 only supported at this point)
+               {
+                       name:  "segwit mainnet witness v1",
+                       addr:  "bm1pw508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7k7grplx",
+                       valid: false,
+                       net:   &consensus.MainNetParams,
+               },
+               {
+                       name:  "segwit mainnet witness v16",
+                       addr:  "BM1SW50QA3JX3S",
+                       valid: false,
+                       net:   &consensus.MainNetParams,
+               },
+               {
+                       name:  "segwit mainnet witness v2",
+                       addr:  "bm1zw508d6qejxtdg4y5r3zarvaryvg6kdaj",
+                       valid: false,
+                       net:   &consensus.MainNetParams,
+               },
+               // Invalid segwit addresses
+               {
+                       name:  "segwit invalid hrp",
+                       addr:  "tc1qw508d6qejxtdg4y5r3zarvary0c5xw7kg3g4ty",
+                       valid: false,
+                       net:   &consensus.TestNetParams,
+               },
+               {
+                       name:  "segwit invalid checksum",
+                       addr:  "bm1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t5",
+                       valid: false,
+                       net:   &consensus.MainNetParams,
+               },
+               {
+                       name:  "segwit invalid witness version",
+                       addr:  "BM13W508D6QEJXTDG4Y5R3ZARVARY0C5XW7KN40WF2",
+                       valid: false,
+                       net:   &consensus.MainNetParams,
+               },
+               {
+                       name:  "segwit invalid program length",
+                       addr:  "bm1rw5uspcuh",
+                       valid: false,
+                       net:   &consensus.MainNetParams,
+               },
+               {
+                       name:  "segwit invalid program length",
+                       addr:  "bm10w508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7kw5rljs90",
+                       valid: false,
+                       net:   &consensus.MainNetParams,
+               },
+               {
+                       name:  "segwit invalid program length for witness version 0 (per BIP141)",
+                       addr:  "BM1QR508D6QEJXTDG4Y5R3ZARVARYV98GJ9P",
+                       valid: false,
+                       net:   &consensus.MainNetParams,
+               },
+               {
+                       name:  "segwit mixed case",
+                       addr:  "tm1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3q0sL5k7",
+                       valid: false,
+                       net:   &consensus.TestNetParams,
+               },
+               {
+                       name:  "segwit zero padding of more than 4 bits",
+                       addr:  "tm1pw508d6qejxtdg4y5r3zarqfsj6c3",
+                       valid: false,
+                       net:   &consensus.TestNetParams,
+               },
+               {
+                       name:  "segwit non-zero padding in 8-to-5 conversion",
+                       addr:  "tm1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3pjxtptv",
+                       valid: false,
+                       net:   &consensus.TestNetParams,
+               },
+       }
+
+       for _, test := range tests {
+               // Decode addr and compare error against valid.
+               decoded, err := DecodeAddress(test.addr, test.net)
+               if (err == nil) != test.valid {
+                       t.Errorf("%v: decoding test failed: %v", test.name, err)
+                       return
+               }
+
+               if err == nil {
+                       // Ensure the stringer returns the same address as the
+                       // original.
+
+                       if decodedStringer, ok := decoded.(fmt.Stringer); ok {
+                               addr := test.addr
+
+                               // For Segwit addresses the string representation
+                               // will always be lower case, so in that case we
+                               // convert the original to lower case first.
+                               if strings.Contains(test.name, "segwit") {
+                                       addr = strings.ToLower(addr)
+                               }
+
+                               if addr != decodedStringer.String() {
+                                       t.Errorf("%v: String on decoded value does not match expected value: %v != %v",
+                                               test.name, test.addr, decodedStringer.String())
+                                       return
+                               }
+
+                       }
+
+                       // Encode again and compare against the original.
+                       encoded := decoded.EncodeAddress()
+                       if test.encoded != encoded {
+                               t.Errorf("%v: decoding and encoding produced different addressess: %v != %v",
+                                       test.name, test.encoded, encoded)
+                               return
+                       }
+
+                       // Perform type-specific calculations.
+                       var saddr []byte
+                       switch decoded.(type) {
+
+                       case *AddressWitnessPubKeyHash:
+                               saddr = tstAddressSegwitSAddr(encoded)
+                       case *AddressWitnessScriptHash:
+                               saddr = tstAddressSegwitSAddr(encoded)
+                       }
+
+                       // Check script address, as well as the Hash160 method for P2PKH and
+                       // P2SH addresses.
+                       if !bytes.Equal(saddr, decoded.ScriptAddress()) {
+                               t.Errorf("%v: script addresses do not match:\n%x != \n%x",
+                                       test.name, saddr, decoded.ScriptAddress())
+                               return
+                       }
+                       switch a := decoded.(type) {
+
+                       case *AddressWitnessPubKeyHash:
+                               if hrp := a.Hrp(); test.net.Bech32HRPSegwit != hrp {
+                                       t.Errorf("%v: hrps do not match:\n%x != \n%x",
+                                               test.name, test.net.Bech32HRPSegwit, hrp)
+                                       return
+                               }
+
+                               expVer := test.result.(*AddressWitnessPubKeyHash).WitnessVersion()
+                               if v := a.WitnessVersion(); v != expVer {
+                                       t.Errorf("%v: witness versions do not match:\n%x != \n%x",
+                                               test.name, expVer, v)
+                                       return
+                               }
+
+                               if p := a.WitnessProgram(); !bytes.Equal(saddr, p) {
+                                       t.Errorf("%v: witness programs do not match:\n%x != \n%x",
+                                               test.name, saddr, p)
+                                       return
+                               }
+
+                       case *AddressWitnessScriptHash:
+                               if hrp := a.Hrp(); test.net.Bech32HRPSegwit != hrp {
+                                       t.Errorf("%v: hrps do not match:\n%x != \n%x",
+                                               test.name, test.net.Bech32HRPSegwit, hrp)
+                                       return
+                               }
+
+                               expVer := test.result.(*AddressWitnessScriptHash).WitnessVersion()
+                               if v := a.WitnessVersion(); v != expVer {
+                                       t.Errorf("%v: witness versions do not match:\n%x != \n%x",
+                                               test.name, expVer, v)
+                                       return
+                               }
+
+                               if p := a.WitnessProgram(); !bytes.Equal(saddr, p) {
+                                       t.Errorf("%v: witness programs do not match:\n%x != \n%x",
+                                               test.name, saddr, p)
+                                       return
+                               }
+                       }
+
+                       // Ensure the address is for the expected network.
+                       if !decoded.IsForNet(test.net) {
+                               t.Errorf("%v: calculated network does not match expected",
+                                       test.name)
+                               return
+                       }
+               }
+
+               if !test.valid {
+                       // If address is invalid, but a creation function exists,
+                       // verify that it returns a nil addr and non-nil error.
+                       if test.f != nil {
+                               _, err := test.f()
+                               if err == nil {
+                                       t.Errorf("%v: address is invalid but creating new address succeeded",
+                                               test.name)
+                                       return
+                               }
+                       }
+                       continue
+               }
+
+               // Valid test, compare address created with f against expected result.
+               addr, err := test.f()
+               if err != nil {
+                       t.Errorf("%v: address is valid but creating new address failed with error %v",
+                               test.name, err)
+                       return
+               }
+
+               if !reflect.DeepEqual(addr, test.result) {
+                       t.Errorf("%v: created address does not match expected result",
+                               test.name)
+                       return
+               }
+       }
+}
+
+// TstAddressWitnessPubKeyHash creates an AddressWitnessPubKeyHash, initiating
+// the fields as given.
+func tstAddressWitnessPubKeyHash(version byte, program [20]byte,
+       hrp string) *AddressWitnessPubKeyHash {
+
+       return &AddressWitnessPubKeyHash{
+               hrp:            hrp,
+               witnessVersion: version,
+               witnessProgram: program,
+       }
+}
+
+// TstAddressWitnessScriptHash creates an AddressWitnessScriptHash, initiating
+// the fields as given.
+func tstAddressWitnessScriptHash(version byte, program [32]byte,
+       hrp string) *AddressWitnessScriptHash {
+
+       return &AddressWitnessScriptHash{
+               hrp:            hrp,
+               witnessVersion: version,
+               witnessProgram: program,
+       }
+}
+
+// TstAddressSegwitSAddr returns the expected witness program bytes for
+// bech32 encoded P2WPKH and P2WSH bitcoin addresses.
+func tstAddressSegwitSAddr(addr string) []byte {
+       _, data, err := bech32.Bech32Decode(addr)
+       if err != nil {
+               return []byte{}
+       }
+
+       // First byte is version, rest is base 32 encoded data.
+       data, err = bech32.ConvertBits(data[1:], 5, 8, false)
+       if err != nil {
+               return []byte{}
+       }
+       return data
+}

diff --git a/vendor/github.com/bytom/common/bech32/bech32.go b/vendor/github.com/bytom/common/bech32/bech32.go
new file mode 100644 (file)
index 0000000..dc0c84f
--- /dev/null
+++ b/vendor/github.com/bytom/common/bech32/bech32.go
@@ -0,0 +1,248 @@
+package bech32
+
+import (
+       "fmt"
+       "strings"
+)
+
+const charset = "qpzry9x8gf2tvdw0s3jn54khce6mua7l"
+
+var gen = []int{0x3b6a57b2, 0x26508e6d, 0x1ea119fa, 0x3d4233dd, 0x2a1462b3}
+
+// Decode decodes a bech32 encoded string, returning the human-readable
+// part and the data part excluding the checksum.
+func Bech32Decode(bech string) (string, []byte, error) {
+       // The maximum allowed length for a bech32 string is 90. It must also
+       // be at least 8 characters, since it needs a non-empty HRP, a
+       // separator, and a 6 character checksum.
+       if len(bech) < 8 || len(bech) > 90 {
+               return "", nil, fmt.Errorf("invalid bech32 string length %d",
+                       len(bech))
+       }
+       // Only ASCII characters between 33 and 126 are allowed.
+       for i := 0; i < len(bech); i++ {
+               if bech[i] < 33 || bech[i] > 126 {
+                       return "", nil, fmt.Errorf("invalid character in "+
+                               "string: '%c'", bech[i])
+               }
+       }
+
+       // The characters must be either all lowercase or all uppercase.
+       lower := strings.ToLower(bech)
+       upper := strings.ToUpper(bech)
+       if bech != lower && bech != upper {
+               return "", nil, fmt.Errorf("string not all lowercase or all " +
+                       "uppercase")
+       }
+
+       // We'll work with the lowercase string from now on.
+       bech = lower
+
+       // The string is invalid if the last '1' is non-existent, it is the
+       // first character of the string (no human-readable part) or one of the
+       // last 6 characters of the string (since checksum cannot contain '1'),
+       // or if the string is more than 90 characters in total.
+       one := strings.LastIndexByte(bech, '1')
+       if one < 1 || one+7 > len(bech) {
+               return "", nil, fmt.Errorf("invalid index of 1")
+       }
+
+       // The human-readable part is everything before the last '1'.
+       hrp := bech[:one]
+       data := bech[one+1:]
+
+       // Each character corresponds to the byte with value of the index in
+       // 'charset'.
+       decoded, err := toBytes(data)
+       if err != nil {
+               return "", nil, fmt.Errorf("failed converting data to bytes: "+
+                       "%v", err)
+       }
+
+       if !bech32VerifyChecksum(hrp, decoded) {
+               moreInfo := ""
+               checksum := bech[len(bech)-6:]
+               expected, err := toChars(bech32Checksum(hrp,
+                       decoded[:len(decoded)-6]))
+               if err == nil {
+                       moreInfo = fmt.Sprintf("Expected %v, got %v.",
+                               expected, checksum)
+               }
+               return "", nil, fmt.Errorf("checksum failed. " + moreInfo)
+       }
+
+       // We exclude the last 6 bytes, which is the checksum.
+       return hrp, decoded[:len(decoded)-6], nil
+}
+
+// Encode encodes a byte slice into a bech32 string with the
+// human-readable part hrb. Note that the bytes must each encode 5 bits
+// (base32).
+func Bech32Encode(hrp string, data []byte) (string, error) {
+       // Calculate the checksum of the data and append it at the end.
+       checksum := bech32Checksum(hrp, data)
+       combined := append(data, checksum...)
+
+       // The resulting bech32 string is the concatenation of the hrp, the
+       // separator 1, data and checksum. Everything after the separator is
+       // represented using the specified charset.
+       dataChars, err := toChars(combined)
+       if err != nil {
+               return "", fmt.Errorf("unable to convert data bytes to chars: "+
+                       "%v", err)
+       }
+       return hrp + "1" + dataChars, nil
+}
+
+// toBytes converts each character in the string 'chars' to the value of the
+// index of the correspoding character in 'charset'.
+func toBytes(chars string) ([]byte, error) {
+       decoded := make([]byte, 0, len(chars))
+       for i := 0; i < len(chars); i++ {
+               index := strings.IndexByte(charset, chars[i])
+               if index < 0 {
+                       return nil, fmt.Errorf("invalid character not part of "+
+                               "charset: %v", chars[i])
+               }
+               decoded = append(decoded, byte(index))
+       }
+       return decoded, nil
+}
+
+// toChars converts the byte slice 'data' to a string where each byte in 'data'
+// encodes the index of a character in 'charset'.
+func toChars(data []byte) (string, error) {
+       result := make([]byte, 0, len(data))
+       for _, b := range data {
+               if int(b) >= len(charset) {
+                       return "", fmt.Errorf("invalid data byte: %v", b)
+               }
+               result = append(result, charset[b])
+       }
+       return string(result), nil
+}
+
+// ConvertBits converts a byte slice where each byte is encoding fromBits bits,
+// to a byte slice where each byte is encoding toBits bits.
+func ConvertBits(data []byte, fromBits, toBits uint8, pad bool) ([]byte, error) {
+       if fromBits < 1 || fromBits > 8 || toBits < 1 || toBits > 8 {
+               return nil, fmt.Errorf("only bit groups between 1 and 8 allowed")
+       }
+
+       // The final bytes, each byte encoding toBits bits.
+       var regrouped []byte
+
+       // Keep track of the next byte we create and how many bits we have
+       // added to it out of the toBits goal.
+       nextByte := byte(0)
+       filledBits := uint8(0)
+
+       for _, b := range data {
+
+               // Discard unused bits.
+               b = b << (8 - fromBits)
+
+               // How many bits remaining to extract from the input data.
+               remFromBits := fromBits
+               for remFromBits > 0 {
+                       // How many bits remaining to be added to the next byte.
+                       remToBits := toBits - filledBits
+
+                       // The number of bytes to next extract is the minimum of
+                       // remFromBits and remToBits.
+                       toExtract := remFromBits
+                       if remToBits < toExtract {
+                               toExtract = remToBits
+                       }
+
+                       // Add the next bits to nextByte, shifting the already
+                       // added bits to the left.
+                       nextByte = (nextByte << toExtract) | (b >> (8 - toExtract))
+
+                       // Discard the bits we just extracted and get ready for
+                       // next iteration.
+                       b = b << toExtract
+                       remFromBits -= toExtract
+                       filledBits += toExtract
+
+                       // If the nextByte is completely filled, we add it to
+                       // our regrouped bytes and start on the next byte.
+                       if filledBits == toBits {
+                               regrouped = append(regrouped, nextByte)
+                               filledBits = 0
+                               nextByte = 0
+                       }
+               }
+       }
+
+       // We pad any unfinished group if specified.
+       if pad && filledBits > 0 {
+               nextByte = nextByte << (toBits - filledBits)
+               regrouped = append(regrouped, nextByte)
+               filledBits = 0
+               nextByte = 0
+       }
+
+       // Any incomplete group must be <= 4 bits, and all zeroes.
+       if filledBits > 0 && (filledBits > 4 || nextByte != 0) {
+               return nil, fmt.Errorf("invalid incomplete group")
+       }
+
+       return regrouped, nil
+}
+
+// For more details on the checksum calculation, please refer to BIP 173.
+func bech32Checksum(hrp string, data []byte) []byte {
+       // Convert the bytes to list of integers, as this is needed for the
+       // checksum calculation.
+       integers := make([]int, len(data))
+       for i, b := range data {
+               integers[i] = int(b)
+       }
+       values := append(bech32HrpExpand(hrp), integers...)
+       values = append(values, []int{0, 0, 0, 0, 0, 0}...)
+       polymod := bech32Polymod(values) ^ 1
+       var res []byte
+       for i := 0; i < 6; i++ {
+               res = append(res, byte((polymod>>uint(5*(5-i)))&31))
+       }
+       return res
+}
+
+// For more details on the polymod calculation, please refer to BIP 173.
+func bech32Polymod(values []int) int {
+       chk := 1
+       for _, v := range values {
+               b := chk >> 25
+               chk = (chk&0x1ffffff)<<5 ^ v
+               for i := 0; i < 5; i++ {
+                       if (b>>uint(i))&1 == 1 {
+                               chk ^= gen[i]
+                       }
+               }
+       }
+       return chk
+}
+
+// For more details on HRP expansion, please refer to BIP 173.
+func bech32HrpExpand(hrp string) []int {
+       v := make([]int, 0, len(hrp)*2+1)
+       for i := 0; i < len(hrp); i++ {
+               v = append(v, int(hrp[i]>>5))
+       }
+       v = append(v, 0)
+       for i := 0; i < len(hrp); i++ {
+               v = append(v, int(hrp[i]&31))
+       }
+       return v
+}
+
+// For more details on the checksum verification, please refer to BIP 173.
+func bech32VerifyChecksum(hrp string, data []byte) bool {
+       integers := make([]int, len(data))
+       for i, b := range data {
+               integers[i] = int(b)
+       }
+       concat := append(bech32HrpExpand(hrp), integers...)
+       return bech32Polymod(concat) == 1
+}

diff --git a/vendor/github.com/bytom/common/bech32/bech32_test.go b/vendor/github.com/bytom/common/bech32/bech32_test.go
new file mode 100644 (file)
index 0000000..da9beb8
--- /dev/null
+++ b/vendor/github.com/bytom/common/bech32/bech32_test.go
@@ -0,0 +1,63 @@
+package bech32
+
+import (
+       "strings"
+       "testing"
+)
+
+func TestBech32(t *testing.T) {
+       tests := []struct {
+               str   string
+               valid bool
+       }{
+               {"A12UEL5L", true},
+               {"an83characterlonghumanreadablepartthatcontainsthenumber1andtheexcludedcharactersbio1tt5tgs", true},
+               {"abcdef1qpzry9x8gf2tvdw0s3jn54khce6mua7lmqqqxw", true},
+               {"11qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqc8247j", true},
+               {"split1checkupstagehandshakeupstreamerranterredcaperred2y9e3w", true},
+               {"split1checkupstagehandshakeupstreamerranterredcaperred2y9e2w", false},                                // invalid checksum
+               {"s lit1checkupstagehandshakeupstreamerranterredcaperredp8hs2p", false},                                // invalid character (space) in hrp
+               {"spl" + string(127) + "t1checkupstagehandshakeupstreamerranterredcaperred2y9e3w", false},              // invalid character (DEL) in hrp
+               {"split1cheo2y9e2w", false},                                                                            // invalid character (o) in data part
+               {"split1a2y9w", false},                                                                                 // too short data part
+               {"1checkupstagehandshakeupstreamerranterredcaperred2y9e3w", false},                                     // empty hrp
+               {"11qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqsqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqc8247j", false}, // too long
+       }
+
+       for _, test := range tests {
+               str := test.str
+               hrp, decoded, err := Bech32Decode(str)
+               if !test.valid {
+                       // Invalid string decoding should result in error.
+                       if err == nil {
+                               t.Error("expected decoding to fail for "+
+                                       "invalid string %v", test.str)
+                       }
+                       continue
+               }
+
+               // Valid string decoding should result in no error.
+               if err != nil {
+                       t.Errorf("expected string to be valid bech32: %v", err)
+               }
+
+               // Check that it encodes to the same string
+               encoded, err := Bech32Encode(hrp, decoded)
+               if err != nil {
+                       t.Errorf("encoding failed: %v", err)
+               }
+
+               if encoded != strings.ToLower(str) {
+                       t.Errorf("expected data to encode to %v, but got %v",
+                               str, encoded)
+               }
+
+               // Flip a bit in the string an make sure it is caught.
+               pos := strings.LastIndexAny(str, "1")
+               flipped := str[:pos+1] + string((str[pos+1] ^ 1)) + str[pos+2:]
+               _, _, err = Bech32Decode(flipped)
+               if err == nil {
+                       t.Error("expected decoding to fail")
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/common/bech32/doc.go b/vendor/github.com/bytom/common/bech32/doc.go
new file mode 100644 (file)
index 0000000..46a4e33
--- /dev/null
+++ b/vendor/github.com/bytom/common/bech32/doc.go
@@ -0,0 +1,11 @@
+/*
+Package bech32 provides a Go implementation of the bech32 format specified in
+BIP 173.
+
+Bech32 strings consist of a human-readable part (hrp), followed by the
+separator 1, then a checksummed data part encoded using the 32 characters
+"qpzry9x8gf2tvdw0s3jn54khce6mua7l".
+
+More info: https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki
+*/
+package bech32

diff --git a/vendor/github.com/bytom/common/bech32/example_test.go b/vendor/github.com/bytom/common/bech32/example_test.go
new file mode 100644 (file)
index 0000000..4480a77
--- /dev/null
+++ b/vendor/github.com/bytom/common/bech32/example_test.go
@@ -0,0 +1,43 @@
+package bech32
+
+import (
+       "encoding/hex"
+       "fmt"
+)
+
+// This example demonstrates how to decode a bech32 encoded string.
+func ExampleBech32Decode() {
+       encoded := "bc1pw508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7k7grplx"
+       hrp, decoded, err := Bech32Decode(encoded)
+       if err != nil {
+               fmt.Println("Error:", err)
+       }
+
+       // Show the decoded data.
+       fmt.Println("Decoded human-readable part:", hrp)
+       fmt.Println("Decoded Data:", hex.EncodeToString(decoded))
+
+       // Output:
+       // Decoded human-readable part: bc
+       // Decoded Data: 010e140f070d1a001912060b0d081504140311021d030c1d03040f1814060e1e160e140f070d1a001912060b0d081504140311021d030c1d03040f1814060e1e16
+}
+
+// This example demonstrates how to encode data into a bech32 string.
+func ExampleBech23Encode() {
+       data := []byte("Test data")
+       // Convert test data to base32:
+       conv, err := ConvertBits(data, 8, 5, true)
+       if err != nil {
+               fmt.Println("Error:", err)
+       }
+       encoded, err := Bech32Encode("customHrp!11111q", conv)
+       if err != nil {
+               fmt.Println("Error:", err)
+       }
+
+       // Show the encoded data.
+       fmt.Println("Encoded Data:", encoded)
+
+       // Output:
+       // Encoded Data: customHrp!11111q123jhxapqv3shgcgumastr
+}

diff --git a/vendor/github.com/bytom/common/bytes.go b/vendor/github.com/bytom/common/bytes.go
new file mode 100644 (file)
index 0000000..db0cdc9
--- /dev/null
+++ b/vendor/github.com/bytom/common/bytes.go
@@ -0,0 +1,39 @@
+// Package common contains various helper functions.
+package common
+
+import (
+       "encoding/binary"
+       "encoding/hex"
+)
+
+func FromHex(s string) []byte {
+       if len(s) > 1 {
+               if s[0:2] == "0x" {
+                       s = s[2:]
+               }
+               if len(s)%2 == 1 {
+                       s = "0" + s
+               }
+               return Hex2Bytes(s)
+       }
+       return nil
+}
+
+func Bytes2Hex(d []byte) string {
+       return hex.EncodeToString(d)
+}
+
+func Hex2Bytes(str string) []byte {
+       h, _ := hex.DecodeString(str)
+       return h
+}
+
+func Unit64ToBytes(n uint64) []byte {
+       buf := make([]byte, 8)
+       binary.LittleEndian.PutUint64(buf, n)
+       return buf
+}
+
+func BytesToUnit64(b []byte) uint64 {
+       return binary.LittleEndian.Uint64(b)
+}

diff --git a/vendor/github.com/bytom/common/sort.go b/vendor/github.com/bytom/common/sort.go
new file mode 100644 (file)
index 0000000..a476c92
--- /dev/null
+++ b/vendor/github.com/bytom/common/sort.go
@@ -0,0 +1,23 @@
+package common
+
+// timeSorter implements sort.Interface to allow a slice of timestamps to
+// be sorted.
+type TimeSorter []uint64
+
+// Len returns the number of timestamps in the slice.  It is part of the
+// sort.Interface implementation.
+func (s TimeSorter) Len() int {
+       return len(s)
+}
+
+// Swap swaps the timestamps at the passed indices.  It is part of the
+// sort.Interface implementation.
+func (s TimeSorter) Swap(i, j int) {
+       s[i], s[j] = s[j], s[i]
+}
+
+// Less returns whether the timstamp with index i should sort before the
+// timestamp with index j.  It is part of the sort.Interface implementation.
+func (s TimeSorter) Less(i, j int) bool {
+       return s[i] < s[j]
+}

diff --git a/vendor/github.com/bytom/common/types.go b/vendor/github.com/bytom/common/types.go
new file mode 100644 (file)
index 0000000..a6ac9fa
--- /dev/null
+++ b/vendor/github.com/bytom/common/types.go
@@ -0,0 +1,92 @@
+package common
+
+import (
+       _ "encoding/hex"
+       "encoding/json"
+       "errors"
+       "math/big"
+       "math/rand"
+       "reflect"
+       "strings"
+)
+
+const (
+       HashLength       = 32
+       AddressLength    = 42
+       PubkeyHashLength = 20
+)
+
+var hashJsonLengthErr = errors.New("common: unmarshalJSON failed: hash must be exactly 32 bytes")
+
+type (
+       Hash [HashLength]byte
+)
+
+func BytesToHash(b []byte) Hash {
+       var h Hash
+       h.SetBytes(b)
+       return h
+}
+
+func StringToHash(s string) Hash { return BytesToHash([]byte(s)) }
+func BigToHash(b *big.Int) Hash  { return BytesToHash(b.Bytes()) }
+
+// Don't use the default 'String' method in case we want to overwrite
+
+// Get the string representation of the underlying hash
+func (h Hash) Str() string   { return string(h[:]) }
+func (h Hash) Bytes() []byte { return h[:] }
+func (h Hash) Hex() string   { return "0x" + Bytes2Hex(h[:]) }
+
+// UnmarshalJSON parses a hash in its hex from to a hash.
+func (h *Hash) UnmarshalJSON(input []byte) error {
+       length := len(input)
+       if length >= 2 && input[0] == '"' && input[length-1] == '"' {
+               input = input[1 : length-1]
+       }
+       // strip "0x" for length check
+       if len(input) > 1 && strings.ToLower(string(input[:2])) == "0x" {
+               input = input[2:]
+       }
+
+       // validate the length of the input hash
+       if len(input) != HashLength*2 {
+               return hashJsonLengthErr
+       }
+       h.SetBytes(FromHex(string(input)))
+       return nil
+}
+
+// Serialize given hash to JSON
+func (h Hash) MarshalJSON() ([]byte, error) {
+       return json.Marshal(h.Hex())
+}
+
+// Sets the hash to the value of b. If b is larger than len(h) it will panic
+func (h *Hash) SetBytes(b []byte) {
+       if len(b) > len(h) {
+               b = b[len(b)-HashLength:]
+       }
+
+       copy(h[HashLength-len(b):], b)
+}
+
+// Sets h to other
+func (h *Hash) Set(other Hash) {
+       for i, v := range other {
+               h[i] = v
+       }
+}
+
+// Generate implements testing/quick.Generator.
+func (h Hash) Generate(rand *rand.Rand, size int) reflect.Value {
+       m := rand.Intn(len(h))
+       for i := len(h) - 1; i > m; i-- {
+               h[i] = byte(rand.Uint32())
+       }
+       return reflect.ValueOf(h)
+}
+
+func EmptyHash(h Hash) bool {
+       return h == Hash{}
+}

diff --git a/vendor/github.com/bytom/common/types_test.go b/vendor/github.com/bytom/common/types_test.go
new file mode 100644 (file)
index 0000000..9742ab1
--- /dev/null
+++ b/vendor/github.com/bytom/common/types_test.go
@@ -0,0 +1,88 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package common
+
+import (
+       //"math/big"
+       "testing"
+)
+
+func TestBytesConversion(t *testing.T) {
+       bytes := []byte{5}
+       hash := BytesToHash(bytes)
+
+       var exp Hash
+       exp[31] = 5
+
+       if hash != exp {
+               t.Errorf("expected %x got %x", exp, hash)
+       }
+}
+
+func TestHashJsonValidation(t *testing.T) {
+       var h Hash
+       var tests = []struct {
+               Prefix string
+               Size   int
+               Error  error
+       }{
+               {"", 2, hashJsonLengthErr},
+               {"", 62, hashJsonLengthErr},
+               {"", 66, hashJsonLengthErr},
+               {"", 65, hashJsonLengthErr},
+               {"0X", 64, nil},
+               {"0x", 64, nil},
+               {"0x", 62, hashJsonLengthErr},
+       }
+       for i, test := range tests {
+               if err := h.UnmarshalJSON(append([]byte(test.Prefix), make([]byte, test.Size)...)); err != test.Error {
+                       t.Errorf("test #%d: error mismatch: have %v, want %v", i, err, test.Error)
+               }
+       }
+}
+
+/*
+func TestAddressUnmarshalJSON(t *testing.T) {
+       var a Address
+       var tests = []struct {
+               Input     string
+               ShouldErr bool
+               Output    *big.Int
+       }{
+               {"", true, nil},
+               {`""`, true, nil},
+               {`"0x"`, true, nil},
+               {`"0x00"`, true, nil},
+               {`"0xG000000000000000000000000000000000000000"`, true, nil},
+               {`"0x0000000000000000000000000000000000000000"`, false, big.NewInt(0)},
+               {`"0x0000000000000000000000000000000000000010"`, false, big.NewInt(16)},
+       }
+       for i, test := range tests {
+               err := a.UnmarshalJSON([]byte(test.Input))
+               if err != nil && !test.ShouldErr {
+                       t.Errorf("test #%d: unexpected error: %v", i, err)
+               }
+               if err == nil {
+                       if test.ShouldErr {
+                               t.Errorf("test #%d: expected error, got none", i)
+                       }
+                       if a.Big().Cmp(test.Output) != 0 {
+                               t.Errorf("test #%d: address mismatch: have %v, want %v", i, a.Big(), test.Output)
+                       }
+               }
+       }
+}*/

diff --git a/vendor/github.com/bytom/consensus/general.go b/vendor/github.com/bytom/consensus/general.go
new file mode 100644 (file)
index 0000000..844fac5
--- /dev/null
+++ b/vendor/github.com/bytom/consensus/general.go
@@ -0,0 +1,163 @@
+package consensus
+
+import (
+       "encoding/binary"
+       "strings"
+
+       "github.com/bytom/protocol/bc"
+)
+
+//consensus variables
+const (
+       // Max gas that one block contains
+       MaxBlockGas      = uint64(10000000)
+       VMGasRate        = int64(200)
+       StorageGasRate   = int64(1)
+       MaxGasAmount     = int64(200000)
+       DefaultGasCredit = int64(30000)
+
+       //config parameter for coinbase reward
+       CoinbasePendingBlockNumber = uint64(100)
+       subsidyReductionInterval   = uint64(840000)
+       baseSubsidy                = uint64(41250000000)
+       InitialBlockSubsidy        = uint64(140700041250000000)
+
+       // config for pow mining
+       BlocksPerRetarget     = uint64(2016)
+       TargetSecondsPerBlock = uint64(150)
+       SeedPerRetarget       = uint64(256)
+
+       // MaxTimeOffsetSeconds is the maximum number of seconds a block time is allowed to be ahead of the current time
+       MaxTimeOffsetSeconds = uint64(60 * 60)
+       MedianTimeBlocks     = 11
+
+       PayToWitnessPubKeyHashDataSize = 20
+       PayToWitnessScriptHashDataSize = 32
+       CoinbaseArbitrarySizeLimit     = 128
+
+       BTMAlias = "BTM"
+)
+
+// BTMAssetID is BTM's asset id, the soul asset of Bytom
+var BTMAssetID = &bc.AssetID{
+       V0: binary.BigEndian.Uint64([]byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}),
+       V1: binary.BigEndian.Uint64([]byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}),
+       V2: binary.BigEndian.Uint64([]byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}),
+       V3: binary.BigEndian.Uint64([]byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}),
+}
+
+// InitialSeed is SHA3-256 of Byte[0^32]
+var InitialSeed = &bc.Hash{
+       V0: uint64(11412844483649490393),
+       V1: uint64(4614157290180302959),
+       V2: uint64(1780246333311066183),
+       V3: uint64(9357197556716379726),
+}
+
+// BTMDefinitionMap is the ....
+var BTMDefinitionMap = map[string]interface{}{
+       "name":        BTMAlias,
+       "symbol":      BTMAlias,
+       "decimals":    8,
+       "description": `Bytom Official Issue`,
+}
+
+// BlockSubsidy calculate the coinbase rewards on given block height
+func BlockSubsidy(height uint64) uint64 {
+       if height == 0 {
+               return InitialBlockSubsidy
+       }
+       return baseSubsidy >> uint(height/subsidyReductionInterval)
+}
+
+// IsBech32SegwitPrefix returns whether the prefix is a known prefix for segwit
+// addresses on any default or registered network.  This is used when decoding
+// an address string into a specific address type.
+func IsBech32SegwitPrefix(prefix string, params *Params) bool {
+       prefix = strings.ToLower(prefix)
+       return prefix == params.Bech32HRPSegwit+"1"
+}
+
+// Checkpoint identifies a known good point in the block chain.  Using
+// checkpoints allows a few optimizations for old blocks during initial download
+// and also prevents forks from old blocks.
+type Checkpoint struct {
+       Height uint64
+       Hash   bc.Hash
+}
+
+// Params store the config for different network
+type Params struct {
+       // Name defines a human-readable identifier for the network.
+       Name            string
+       Bech32HRPSegwit string
+       // DefaultPort defines the default peer-to-peer port for the network.
+       DefaultPort string
+
+       // DNSSeeds defines a list of DNS seeds for the network that are used
+       // as one method to discover peers.
+       DNSSeeds    []string
+       Checkpoints []Checkpoint
+}
+
+// ActiveNetParams is ...
+var ActiveNetParams = MainNetParams
+
+// NetParams is the correspondence between chain_id and Params
+var NetParams = map[string]Params{
+       "mainnet": MainNetParams,
+       "wisdom":  TestNetParams,
+       "solonet": SoloNetParams,
+}
+
+// MainNetParams is the config for production
+var MainNetParams = Params{
+       Name:            "main",
+       Bech32HRPSegwit: "bm",
+       DefaultPort:     "46657",
+       DNSSeeds:        []string{"www.mainnetseed.bytom.io"},
+       Checkpoints: []Checkpoint{
+               {10000, bc.NewHash([32]byte{0x93, 0xe1, 0xeb, 0x78, 0x21, 0xd2, 0xb4, 0xad, 0x0f, 0x5b, 0x1c, 0xea, 0x82, 0xe8, 0x43, 0xad, 0x8c, 0x09, 0x9a, 0xb6, 0x5d, 0x8f, 0x70, 0xc5, 0x84, 0xca, 0xa2, 0xdd, 0xf1, 0x74, 0x65, 0x2c})},
+               {20000, bc.NewHash([32]byte{0x7d, 0x38, 0x61, 0xf3, 0x2c, 0xc0, 0x03, 0x81, 0xbb, 0xcd, 0x9a, 0x37, 0x6f, 0x10, 0x5d, 0xfe, 0x6f, 0xfe, 0x2d, 0xa5, 0xea, 0x88, 0xa5, 0xe3, 0x42, 0xed, 0xa1, 0x17, 0x9b, 0xa8, 0x0b, 0x7c})},
+               {30000, bc.NewHash([32]byte{0x32, 0x36, 0x06, 0xd4, 0x27, 0x2e, 0x35, 0x24, 0x46, 0x26, 0x7b, 0xe0, 0xfa, 0x48, 0x10, 0xa4, 0x3b, 0xb2, 0x40, 0xf1, 0x09, 0x51, 0x5b, 0x22, 0x9f, 0xf3, 0xc3, 0x83, 0x28, 0xaa, 0x4a, 0x00})},
+               {40000, bc.NewHash([32]byte{0x7f, 0xe2, 0xde, 0x11, 0x21, 0xf3, 0xa9, 0xa0, 0xee, 0x60, 0x8d, 0x7d, 0x4b, 0xea, 0xcc, 0x33, 0xfe, 0x41, 0x25, 0xdc, 0x2f, 0x26, 0xc2, 0xf2, 0x9c, 0x07, 0x17, 0xf9, 0xe4, 0x4f, 0x9d, 0x46})},
+               {50000, bc.NewHash([32]byte{0x5e, 0xfb, 0xdf, 0xf5, 0x35, 0x38, 0xa6, 0x0b, 0x75, 0x32, 0x02, 0x61, 0x83, 0x54, 0x34, 0xff, 0x3e, 0x82, 0x2e, 0xf8, 0x64, 0xae, 0x2d, 0xc7, 0x6c, 0x9d, 0x5e, 0xbd, 0xa3, 0xd4, 0x50, 0xcf})},
+               {62000, bc.NewHash([32]byte{0xd7, 0x39, 0x8f, 0x23, 0x57, 0xf9, 0x4c, 0xa0, 0x28, 0xa7, 0x00, 0x2b, 0x53, 0x9e, 0x51, 0x2d, 0x3e, 0xca, 0xc9, 0x22, 0x59, 0xfc, 0xd0, 0x3f, 0x67, 0x1a, 0x0a, 0xb1, 0x02, 0xbf, 0x2b, 0x03})},
+               {72000, bc.NewHash([32]byte{0x66, 0x02, 0x31, 0x19, 0xf1, 0x60, 0x35, 0x61, 0xa4, 0xf1, 0x38, 0x04, 0xcc, 0xe4, 0x59, 0x8f, 0x55, 0x39, 0xba, 0x22, 0xf2, 0x6d, 0x90, 0xbf, 0xc1, 0x87, 0xef, 0x98, 0xcc, 0x70, 0x4d, 0x94})},
+               {83700, bc.NewHash([32]byte{0x7f, 0x26, 0xc9, 0x11, 0xe8, 0x46, 0xd0, 0x6e, 0x36, 0xbb, 0xac, 0xce, 0x99, 0xa2, 0x19, 0x89, 0x3f, 0xf7, 0x84, 0x2a, 0xcb, 0x44, 0x7f, 0xbb, 0x0e, 0x3b, 0xa3, 0x68, 0xd6, 0x2b, 0xe8, 0x0d})},
+               {93700, bc.NewHash([32]byte{0x70, 0x44, 0x70, 0xe5, 0xb3, 0x9b, 0xd3, 0x67, 0x19, 0x20, 0x08, 0x42, 0x1b, 0x59, 0xe8, 0xdc, 0xb5, 0xbb, 0xb9, 0x2d, 0xd3, 0xdc, 0x28, 0x4e, 0xcb, 0x7b, 0x0b, 0xbf, 0x21, 0x51, 0xe1, 0xba})},
+               {106600, bc.NewHash([32]byte{0x31, 0x15, 0x2b, 0x00, 0xd4, 0x07, 0xe1, 0xa7, 0x06, 0xe1, 0xae, 0x2e, 0x98, 0x69, 0x8f, 0x47, 0xff, 0x44, 0x97, 0x01, 0xa7, 0x9e, 0x08, 0xdb, 0xeb, 0x0f, 0x1f, 0x5a, 0xdd, 0xf5, 0x26, 0xb9})},
+               {116600, bc.NewHash([32]byte{0x08, 0xeb, 0xf7, 0x6c, 0x27, 0xed, 0x81, 0xe7, 0xe7, 0xfe, 0x13, 0xca, 0x80, 0x71, 0x29, 0x26, 0x28, 0x72, 0x25, 0xa5, 0x2a, 0xa0, 0x36, 0x30, 0x58, 0xaa, 0x58, 0xc6, 0xdd, 0xf2, 0xa0, 0xe7})},
+               {126600, bc.NewHash([32]byte{0xac, 0x10, 0x41, 0x08, 0x24, 0x80, 0xe9, 0x5a, 0x9f, 0x32, 0x0a, 0x5e, 0x17, 0x7b, 0x01, 0x8d, 0x0d, 0x0d, 0x3d, 0xfc, 0xa7, 0x1d, 0x81, 0x5f, 0x13, 0xb4, 0xad, 0x0f, 0xc6, 0xde, 0x7a, 0x10})},
+               {131260, bc.NewHash([32]byte{0xdf, 0x18, 0xb5, 0xb1, 0x6f, 0x5f, 0xd2, 0x77, 0x7c, 0xab, 0xb8, 0x59, 0xcb, 0x13, 0x64, 0xce, 0x06, 0x06, 0x51, 0x39, 0x89, 0x30, 0x1b, 0x69, 0xd6, 0x00, 0xec, 0xd8, 0xfa, 0xd2, 0x09, 0x93})},
+               {157000, bc.NewHash([32]byte{0xb7, 0x70, 0x38, 0x4c, 0x81, 0x32, 0xaf, 0x12, 0x8d, 0xfa, 0xb4, 0xeb, 0x46, 0x4e, 0xb7, 0xeb, 0x66, 0x14, 0xd9, 0x24, 0xc2, 0xd1, 0x0c, 0x9c, 0x14, 0x20, 0xc9, 0xea, 0x0e, 0x85, 0xc8, 0xc3})},
+               {180000, bc.NewHash([32]byte{0x3c, 0x2a, 0x91, 0x55, 0xf3, 0x36, 0x6a, 0x5a, 0x60, 0xcf, 0x84, 0x42, 0xec, 0x4d, 0x0c, 0x63, 0xbc, 0x34, 0xe9, 0x1d, 0x1c, 0x6b, 0xb0, 0xf0, 0x50, 0xf3, 0xfb, 0x2d, 0xf6, 0xa1, 0xd9, 0x5c})},
+               {191000, bc.NewHash([32]byte{0x09, 0x4f, 0xe3, 0x23, 0x91, 0xb5, 0x11, 0x18, 0x68, 0xcc, 0x99, 0x9f, 0xeb, 0x95, 0xf9, 0xcc, 0xa5, 0x27, 0x6a, 0xf9, 0x0e, 0xda, 0x1b, 0xc6, 0x2e, 0x03, 0x29, 0xfe, 0x08, 0xdd, 0x2b, 0x01})},
+               {205000, bc.NewHash([32]byte{0x6f, 0xdd, 0x87, 0x26, 0x73, 0x3f, 0x0b, 0xc7, 0x58, 0x64, 0xa4, 0xdf, 0x45, 0xe4, 0x50, 0x27, 0x68, 0x38, 0x18, 0xb9, 0xa9, 0x44, 0x56, 0x20, 0x34, 0x68, 0xd8, 0x68, 0x72, 0xdb, 0x65, 0x6f})},
+               {219700, bc.NewHash([32]byte{0x98, 0x49, 0x8d, 0x4b, 0x7e, 0xe9, 0x44, 0x55, 0xc1, 0x07, 0xdd, 0x9a, 0xba, 0x6b, 0x49, 0x92, 0x61, 0x15, 0x03, 0x4f, 0x59, 0x42, 0x35, 0x74, 0xea, 0x3b, 0xdb, 0x2c, 0x53, 0x11, 0x75, 0x74})},
+       },
+}
+
+// TestNetParams is the config for test-net
+var TestNetParams = Params{
+       Name:            "test",
+       Bech32HRPSegwit: "tm",
+       DefaultPort:     "46656",
+       DNSSeeds:        []string{"www.testnetseed.bytom.io"},
+       Checkpoints: []Checkpoint{
+               {10303, bc.NewHash([32]byte{0x3e, 0x94, 0x5d, 0x35, 0x70, 0x30, 0xd4, 0x3b, 0x3d, 0xe3, 0xdd, 0x80, 0x67, 0x29, 0x9a, 0x5e, 0x09, 0xf9, 0xfb, 0x2b, 0xad, 0x5f, 0x92, 0xc8, 0x69, 0xd1, 0x42, 0x39, 0x74, 0x9a, 0xd1, 0x1c})},
+               {40000, bc.NewHash([32]byte{0x6b, 0x13, 0x9a, 0x5b, 0x76, 0x77, 0x9b, 0xd4, 0x1c, 0xec, 0x53, 0x68, 0x44, 0xbf, 0xf4, 0x48, 0x94, 0x3d, 0x16, 0xe3, 0x9b, 0x2e, 0xe8, 0xa1, 0x0f, 0xa0, 0xbc, 0x7d, 0x2b, 0x17, 0x55, 0xfc})},
+               {78000, bc.NewHash([32]byte{0xa9, 0x03, 0xc0, 0x0c, 0x62, 0x1a, 0x3d, 0x00, 0x7f, 0xd8, 0x5d, 0x51, 0xba, 0x43, 0xe4, 0xd0, 0xe3, 0xc5, 0xd4, 0x8f, 0x30, 0xb5, 0x5f, 0xa5, 0x77, 0x62, 0xd8, 0x8b, 0x11, 0x81, 0x5f, 0xb4})},
+               {82000, bc.NewHash([32]byte{0x56, 0xb1, 0xba, 0x23, 0x69, 0x5c, 0x8f, 0x51, 0x4e, 0x23, 0xc0, 0xae, 0xaa, 0x25, 0x08, 0xc5, 0x85, 0xf3, 0x7c, 0xd1, 0xc6, 0x15, 0xa2, 0x51, 0xda, 0x79, 0x4f, 0x08, 0x13, 0x66, 0xc9, 0x85})},
+               {83200, bc.NewHash([32]byte{0xb4, 0x6f, 0xc5, 0xcf, 0xa3, 0x3d, 0xe1, 0x11, 0x71, 0x68, 0x40, 0x68, 0x0c, 0xe7, 0x4c, 0xaf, 0x5a, 0x11, 0xfe, 0x82, 0xbc, 0x36, 0x88, 0x0f, 0xbd, 0x04, 0xf0, 0xc4, 0x86, 0xd4, 0xd6, 0xd5})},
+               {93000, bc.NewHash([32]byte{0x6f, 0x4f, 0x37, 0x5f, 0xe9, 0xfb, 0xdf, 0x66, 0x60, 0x0e, 0xf0, 0x39, 0xb7, 0x18, 0x26, 0x75, 0xa0, 0x9a, 0xa5, 0x9b, 0x83, 0xc9, 0x9a, 0x25, 0x45, 0xb8, 0x7d, 0xd4, 0x99, 0x24, 0xa2, 0x8a})},
+               {113300, bc.NewHash([32]byte{0x7a, 0x69, 0x75, 0xa5, 0xf6, 0xb6, 0x94, 0xf3, 0x94, 0xa2, 0x63, 0x91, 0x28, 0xb6, 0xab, 0x7e, 0xf9, 0x71, 0x27, 0x5a, 0xe2, 0x59, 0xd3, 0xff, 0x70, 0x6e, 0xcb, 0xd8, 0xd8, 0x30, 0x9c, 0xc4})},
+       },
+}
+
+// SoloNetParams is the config for test-net
+var SoloNetParams = Params{
+       Name:            "solo",
+       Bech32HRPSegwit: "sm",
+       Checkpoints:     []Checkpoint{},
+}

diff --git a/vendor/github.com/bytom/consensus/general_test.go b/vendor/github.com/bytom/consensus/general_test.go
new file mode 100644 (file)
index 0000000..5006743
--- /dev/null
+++ b/vendor/github.com/bytom/consensus/general_test.go
@@ -0,0 +1,38 @@
+package consensus
+
+import "testing"
+
+func TestSubsidy(t *testing.T) {
+       cases := []struct {
+               subsidy uint64
+               height  uint64
+       }{
+               {
+                       subsidy: baseSubsidy,
+                       height:  1,
+               },
+               {
+                       subsidy: baseSubsidy,
+                       height:  subsidyReductionInterval - 1,
+               },
+               {
+                       subsidy: baseSubsidy / 2,
+                       height:  subsidyReductionInterval,
+               },
+               {
+                       subsidy: baseSubsidy / 2,
+                       height:  subsidyReductionInterval + 1,
+               },
+               {
+                       subsidy: baseSubsidy / 1024,
+                       height:  subsidyReductionInterval * 10,
+               },
+       }
+
+       for _, c := range cases {
+               subsidy := BlockSubsidy(c.height)
+               if subsidy != c.subsidy {
+                       t.Errorf("got subsidy %d, want %d", subsidy, c.subsidy)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/crypto/crypto.go b/vendor/github.com/bytom/crypto/crypto.go
new file mode 100644 (file)
index 0000000..919b1c5
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/crypto.go
@@ -0,0 +1,31 @@
+package crypto
+
+import (
+       "github.com/bytom/common"
+       "golang.org/x/crypto/ripemd160"
+       "golang.org/x/crypto/sha3"
+)
+
+func Sha256(data ...[]byte) []byte {
+       d := sha3.New256()
+       for _, b := range data {
+               d.Write(b)
+       }
+       return d.Sum(nil)
+}
+
+func Sha256Hash(data ...[]byte) (h common.Hash) {
+       d := sha3.New256()
+       for _, b := range data {
+               d.Write(b)
+       }
+       d.Sum(h[:0])
+       return h
+}
+
+func Ripemd160(data []byte) []byte {
+       ripemd := ripemd160.New()
+       ripemd.Write(data)
+
+       return ripemd.Sum(nil)
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/chainkd/bench_test.go b/vendor/github.com/bytom/crypto/ed25519/chainkd/bench_test.go
new file mode 100644 (file)
index 0000000..afadd56
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/chainkd/bench_test.go
@@ -0,0 +1,53 @@
+package chainkd
+
+import (
+       "log"
+       "testing"
+)
+
+var (
+       benchXprv XPrv
+       benchXpub XPub
+       benchMsg  = []byte("Hello, world!")
+       benchSig  []byte
+)
+
+func init() {
+       var err error
+       benchXprv, err = NewXPrv(nil)
+       if err != nil {
+               log.Fatalln(err)
+       }
+       benchXpub = benchXprv.XPub()
+       benchSig = benchXprv.Sign(benchMsg)
+}
+
+func BenchmarkXPrvChildNonHardened(b *testing.B) {
+       for i := 0; i < b.N; i++ {
+               benchXprv.Child(benchMsg, false)
+       }
+}
+
+func BenchmarkXPrvChildHardened(b *testing.B) {
+       for i := 0; i < b.N; i++ {
+               benchXprv.Child(benchMsg, true)
+       }
+}
+
+func BenchmarkXPubChild(b *testing.B) {
+       for i := 0; i < b.N; i++ {
+               benchXpub.Child(benchMsg)
+       }
+}
+
+func BenchmarkXPrvSign(b *testing.B) {
+       for i := 0; i < b.N; i++ {
+               benchXprv.Sign(benchMsg)
+       }
+}
+
+func BenchmarkXPubVerify(b *testing.B) {
+       for i := 0; i < b.N; i++ {
+               benchXpub.Verify(benchMsg, benchSig)
+       }
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/chainkd/chainkd.go b/vendor/github.com/bytom/crypto/ed25519/chainkd/chainkd.go
new file mode 100644 (file)
index 0000000..3629fec
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/chainkd/chainkd.go
@@ -0,0 +1,275 @@
+package chainkd
+
+import (
+       "crypto/hmac"
+       "crypto/rand"
+       "crypto/sha512"
+       "io"
+
+       "github.com/bytom/crypto/ed25519"
+       "github.com/bytom/crypto/ed25519/ecmath"
+)
+
+type (
+       //XPrv external private key
+       XPrv [64]byte
+       //XPub external public key
+       XPub [64]byte
+)
+
+// NewXPrv takes a source of random bytes and produces a new XPrv.
+// If r is nil, crypto/rand.Reader is used.
+func NewXPrv(r io.Reader) (xprv XPrv, err error) {
+       if r == nil {
+               r = rand.Reader
+       }
+       var entropy [64]byte
+       _, err = io.ReadFull(r, entropy[:])
+       if err != nil {
+               return xprv, err
+       }
+       return RootXPrv(entropy[:]), nil
+}
+
+// RootXPrv takes a seed binary string and produces a new xprv.
+func RootXPrv(seed []byte) (xprv XPrv) {
+       h := hmac.New(sha512.New, []byte{'R', 'o', 'o', 't'})
+       h.Write(seed)
+       h.Sum(xprv[:0])
+       pruneRootScalar(xprv[:32])
+       return
+}
+
+// XPub derives an extended public key from a given xprv.
+func (xprv XPrv) XPub() (xpub XPub) {
+       var scalar ecmath.Scalar
+       copy(scalar[:], xprv[:32])
+
+       var P ecmath.Point
+       P.ScMulBase(&scalar)
+       buf := P.Encode()
+
+       copy(xpub[:32], buf[:])
+       copy(xpub[32:], xprv[32:])
+
+       return
+}
+
+// Child derives a child xprv based on `selector` string and `hardened` flag.
+// If `hardened` is false, child xpub can be derived independently
+// from the parent xpub without using the parent xprv.
+// If `hardened` is true, child key can only be derived from the parent xprv.
+func (xprv XPrv) Child(sel []byte, hardened bool) XPrv {
+       if hardened {
+               return xprv.hardenedChild(sel)
+       }
+       return xprv.nonhardenedChild(sel)
+}
+
+func (xprv XPrv) hardenedChild(sel []byte) (res XPrv) {
+       h := hmac.New(sha512.New, xprv[32:])
+       h.Write([]byte{'H'})
+       h.Write(xprv[:32])
+       h.Write(sel)
+       h.Sum(res[:0])
+       pruneRootScalar(res[:32])
+       return
+}
+
+func (xprv XPrv) nonhardenedChild(sel []byte) (res XPrv) {
+       xpub := xprv.XPub()
+
+       h := hmac.New(sha512.New, xpub[32:])
+       h.Write([]byte{'N'})
+       h.Write(xpub[:32])
+       h.Write(sel)
+       h.Sum(res[:0])
+
+       pruneIntermediateScalar(res[:32])
+
+       // Unrolled the following loop:
+       // var carry int
+       // carry = 0
+       // for i := 0; i < 32; i++ {
+       //         sum := int(xprv[i]) + int(res[i]) + carry
+       //         res[i] = byte(sum & 0xff)
+       //         carry = (sum >> 8)
+       // }
+
+       sum := int(0)
+
+       sum = int(xprv[0]) + int(res[0]) + (sum >> 8)
+       res[0] = byte(sum & 0xff)
+       sum = int(xprv[1]) + int(res[1]) + (sum >> 8)
+       res[1] = byte(sum & 0xff)
+       sum = int(xprv[2]) + int(res[2]) + (sum >> 8)
+       res[2] = byte(sum & 0xff)
+       sum = int(xprv[3]) + int(res[3]) + (sum >> 8)
+       res[3] = byte(sum & 0xff)
+       sum = int(xprv[4]) + int(res[4]) + (sum >> 8)
+       res[4] = byte(sum & 0xff)
+       sum = int(xprv[5]) + int(res[5]) + (sum >> 8)
+       res[5] = byte(sum & 0xff)
+       sum = int(xprv[6]) + int(res[6]) + (sum >> 8)
+       res[6] = byte(sum & 0xff)
+       sum = int(xprv[7]) + int(res[7]) + (sum >> 8)
+       res[7] = byte(sum & 0xff)
+       sum = int(xprv[8]) + int(res[8]) + (sum >> 8)
+       res[8] = byte(sum & 0xff)
+       sum = int(xprv[9]) + int(res[9]) + (sum >> 8)
+       res[9] = byte(sum & 0xff)
+       sum = int(xprv[10]) + int(res[10]) + (sum >> 8)
+       res[10] = byte(sum & 0xff)
+       sum = int(xprv[11]) + int(res[11]) + (sum >> 8)
+       res[11] = byte(sum & 0xff)
+       sum = int(xprv[12]) + int(res[12]) + (sum >> 8)
+       res[12] = byte(sum & 0xff)
+       sum = int(xprv[13]) + int(res[13]) + (sum >> 8)
+       res[13] = byte(sum & 0xff)
+       sum = int(xprv[14]) + int(res[14]) + (sum >> 8)
+       res[14] = byte(sum & 0xff)
+       sum = int(xprv[15]) + int(res[15]) + (sum >> 8)
+       res[15] = byte(sum & 0xff)
+       sum = int(xprv[16]) + int(res[16]) + (sum >> 8)
+       res[16] = byte(sum & 0xff)
+       sum = int(xprv[17]) + int(res[17]) + (sum >> 8)
+       res[17] = byte(sum & 0xff)
+       sum = int(xprv[18]) + int(res[18]) + (sum >> 8)
+       res[18] = byte(sum & 0xff)
+       sum = int(xprv[19]) + int(res[19]) + (sum >> 8)
+       res[19] = byte(sum & 0xff)
+       sum = int(xprv[20]) + int(res[20]) + (sum >> 8)
+       res[20] = byte(sum & 0xff)
+       sum = int(xprv[21]) + int(res[21]) + (sum >> 8)
+       res[21] = byte(sum & 0xff)
+       sum = int(xprv[22]) + int(res[22]) + (sum >> 8)
+       res[22] = byte(sum & 0xff)
+       sum = int(xprv[23]) + int(res[23]) + (sum >> 8)
+       res[23] = byte(sum & 0xff)
+       sum = int(xprv[24]) + int(res[24]) + (sum >> 8)
+       res[24] = byte(sum & 0xff)
+       sum = int(xprv[25]) + int(res[25]) + (sum >> 8)
+       res[25] = byte(sum & 0xff)
+       sum = int(xprv[26]) + int(res[26]) + (sum >> 8)
+       res[26] = byte(sum & 0xff)
+       sum = int(xprv[27]) + int(res[27]) + (sum >> 8)
+       res[27] = byte(sum & 0xff)
+       sum = int(xprv[28]) + int(res[28]) + (sum >> 8)
+       res[28] = byte(sum & 0xff)
+       sum = int(xprv[29]) + int(res[29]) + (sum >> 8)
+       res[29] = byte(sum & 0xff)
+       sum = int(xprv[30]) + int(res[30]) + (sum >> 8)
+       res[30] = byte(sum & 0xff)
+       sum = int(xprv[31]) + int(res[31]) + (sum >> 8)
+       res[31] = byte(sum & 0xff)
+
+       if (sum >> 8) != 0 {
+               panic("sum does not fit in 256-bit int")
+       }
+       return
+}
+
+// Child derives a child xpub based on `selector` string.
+// The corresponding child xprv can be derived from the parent xprv
+// using non-hardened derivation: `parentxprv.Child(sel, false)`.
+func (xpub XPub) Child(sel []byte) (res XPub) {
+       h := hmac.New(sha512.New, xpub[32:])
+       h.Write([]byte{'N'})
+       h.Write(xpub[:32])
+       h.Write(sel)
+       h.Sum(res[:0])
+
+       pruneIntermediateScalar(res[:32])
+
+       var (
+               f ecmath.Scalar
+               F ecmath.Point
+       )
+       copy(f[:], res[:32])
+       F.ScMulBase(&f)
+
+       var (
+               pubkey [32]byte
+               P      ecmath.Point
+       )
+       copy(pubkey[:], xpub[:32])
+       _, ok := P.Decode(pubkey)
+       if !ok {
+               panic("XPub should have been validated on initialization")
+       }
+
+       P.Add(&P, &F)
+       pubkey = P.Encode()
+       copy(res[:32], pubkey[:])
+
+       return
+}
+
+// Derive generates a child xprv by recursively deriving
+// non-hardened child xprvs over the list of selectors:
+// `Derive([a,b,c,...]) == Child(a).Child(b).Child(c)...`
+func (xprv XPrv) Derive(path [][]byte) XPrv {
+       res := xprv
+       for _, p := range path {
+               res = res.Child(p, false)
+       }
+       return res
+}
+
+// Derive generates a child xpub by recursively deriving
+// non-hardened child xpubs over the list of selectors:
+// `Derive([a,b,c,...]) == Child(a).Child(b).Child(c)...`
+func (xpub XPub) Derive(path [][]byte) XPub {
+       res := xpub
+       for _, p := range path {
+               res = res.Child(p)
+       }
+       return res
+}
+
+// Sign creates an EdDSA signature using expanded private key
+// derived from the xprv.
+func (xprv XPrv) Sign(msg []byte) []byte {
+       return Ed25519InnerSign(xprv.ExpandedPrivateKey(), msg)
+}
+
+// Verify checks an EdDSA signature using public key
+// extracted from the first 32 bytes of the xpub.
+func (xpub XPub) Verify(msg []byte, sig []byte) bool {
+       return ed25519.Verify(xpub.PublicKey(), msg, sig)
+}
+
+// ExpandedPrivateKey generates a 64-byte key where
+// the first half is the scalar copied from xprv,
+// and the second half is the `prefix` is generated via PRF
+// from the xprv.
+func (xprv XPrv) ExpandedPrivateKey() ExpandedPrivateKey {
+       var res [64]byte
+       h := hmac.New(sha512.New, []byte{'E', 'x', 'p', 'a', 'n', 'd'})
+       h.Write(xprv[:])
+       h.Sum(res[:0])
+       copy(res[:32], xprv[:32])
+       return res[:]
+}
+
+// PublicKey extracts the ed25519 public key from an xpub.
+func (xpub XPub) PublicKey() ed25519.PublicKey {
+       return ed25519.PublicKey(xpub[:32])
+}
+
+// s must be >= 32 bytes long and gets rewritten in place.
+// This is NOT the same pruning as in Ed25519: it additionally clears the third
+// highest bit to ensure subkeys do not overflow the second highest bit.
+func pruneRootScalar(s []byte) {
+       s[0] &= 248
+       s[31] &= 31 // clear top 3 bits
+       s[31] |= 64 // set second highest bit
+}
+
+// Clears lowest 3 bits and highest 23 bits of `f`.
+func pruneIntermediateScalar(f []byte) {
+       f[0] &= 248 // clear bottom 3 bits
+       f[29] &= 1  // clear 7 high bits
+       f[30] = 0   // clear 8 bits
+       f[31] = 0   // clear 8 bits
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/chainkd/chainkd_test.go b/vendor/github.com/bytom/crypto/ed25519/chainkd/chainkd_test.go
new file mode 100644 (file)
index 0000000..da3a002
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/chainkd/chainkd_test.go
@@ -0,0 +1,279 @@
+package chainkd
+
+import (
+       "bytes"
+       "encoding/hex"
+       "fmt"
+       "reflect"
+       "testing"
+)
+
+func TestVectors1(t *testing.T) {
+       root := RootXPrv([]byte{0x01, 0x02, 0x03})
+
+       verifyTestVector(t, "Root(010203).xprv", root.hex(),
+               "50f8c532ce6f088de65c2c1fbc27b491509373fab356eba300dfa7cc587b07483bc9e0d93228549c6888d3f68ad664b92c38f5ea8ca07181c1410949c02d3146")
+       verifyTestVector(t, "Root(010203).xpub", root.XPub().hex(),
+               "e11f321ffef364d01c2df2389e61091b15dab2e8eee87cb4c053fa65ed2812993bc9e0d93228549c6888d3f68ad664b92c38f5ea8ca07181c1410949c02d3146")
+
+       verifyTestVector(t, "Root(010203)/010203(H).xprv", root.Child([]byte{0x01, 0x02, 0x03}, true).hex(),
+               "6023c8e7633a9353a59bd930ea6dc397e400b1088b86b4a15d8de8567554df5574274bc1a0bd93b4494cb68e45c5ec5aefc1eed4d0c3bfd53b0b4e679ce52028")
+       verifyTestVector(t, "Root(010203)/010203(H).xpub", root.Child([]byte{0x01, 0x02, 0x03}, true).XPub().hex(),
+               "eabebab4184c63f8df07efe31fb588a0ae222318087458b4936bf0b0feab015074274bc1a0bd93b4494cb68e45c5ec5aefc1eed4d0c3bfd53b0b4e679ce52028")
+
+       verifyTestVector(t, "Root(010203)/010203(N).xprv", root.Child([]byte{0x01, 0x02, 0x03}, false).hex(),
+               "705afd25a0e242b7333105d77cbb0ec15e667154916bbed5084c355dba7b0748b0faca523928f42e685ee6deb0cb3d41a09617783c87e9a161a04f2207ad4d2f")
+       verifyTestVector(t, "Root(010203)/010203(N).xpub", root.Child([]byte{0x01, 0x02, 0x03}, false).XPub().hex(),
+               "c0bbd87142e7bf90abfbb3d0cccc210c6d7eb3f912c35f205302c86ae9ef6eefb0faca523928f42e685ee6deb0cb3d41a09617783c87e9a161a04f2207ad4d2f")
+       verifyTestVector(t, "Root(010203)/010203(N).xpub", root.XPub().Child([]byte{0x01, 0x02, 0x03}).hex(),
+               "c0bbd87142e7bf90abfbb3d0cccc210c6d7eb3f912c35f205302c86ae9ef6eefb0faca523928f42e685ee6deb0cb3d41a09617783c87e9a161a04f2207ad4d2f")
+
+       verifyTestVector(t, "Root(010203)/010203(H)/“”(N).xprv", root.Child([]byte{0x01, 0x02, 0x03}, true).Child([]byte{}, false).hex(),
+               "7023f9877813348ca8e67b29d551baf98a43cfb76cdff538f3ff97074a55df5560e3aa7fb600f61a84317a981dc9d1f7e8df2e8a3f8b544a21d2404e0b4e480a")
+       verifyTestVector(t, "Root(010203)/010203(H)/“”(N).xpub", root.Child([]byte{0x01, 0x02, 0x03}, true).Child([]byte{}, false).XPub().hex(),
+               "4e44c9ab8a45b9d1c3daab5c09d73b01209220ea704808f04feaa3614c7c7ba760e3aa7fb600f61a84317a981dc9d1f7e8df2e8a3f8b544a21d2404e0b4e480a")
+       verifyTestVector(t, "Root(010203)/010203(H)/“”(N).xpub", root.Child([]byte{0x01, 0x02, 0x03}, true).XPub().Child([]byte{}).hex(),
+               "4e44c9ab8a45b9d1c3daab5c09d73b01209220ea704808f04feaa3614c7c7ba760e3aa7fb600f61a84317a981dc9d1f7e8df2e8a3f8b544a21d2404e0b4e480a")
+
+       verifyTestVector(t, "Root(010203)/010203(N)/“”(H).xprv", root.Child([]byte{0x01, 0x02, 0x03}, false).Child([]byte{}, true).hex(),
+               "90b60b007e866dacc4b1f844089a805ffd78a295f5b0544034116ace354c58523410b1e6a3c557ca90c322f6ff4b5e547242965eaed8c34767765f0e05ed0e4f")
+       verifyTestVector(t, "Root(010203)/010203(N)/“”(H).xpub", root.Child([]byte{0x01, 0x02, 0x03}, false).Child([]byte{}, true).XPub().hex(),
+               "ca97ec34ef30aa08ebd19b9848b11ebadf9c0ad3a0be6b11d33d9558573aca633410b1e6a3c557ca90c322f6ff4b5e547242965eaed8c34767765f0e05ed0e4f")
+
+       verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xprv", root.Child([]byte{0x01, 0x02, 0x03}, false).Child([]byte{}, false).hex(),
+               "d81ba3ab554a7d09bfd8bda5089363399b7f4b19d4f1806ca0c35feabf7b074856648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
+       verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xpub", root.Child([]byte{0x01, 0x02, 0x03}, false).Child([]byte{}, false).XPub().hex(),
+               "28279bcb06aee9e5c0302f4e1db879ac7f5444ec07266a736dd571c21961427b56648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
+       verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xpub", root.XPub().Child([]byte{0x01, 0x02, 0x03}).Child([]byte{}).hex(),
+               "28279bcb06aee9e5c0302f4e1db879ac7f5444ec07266a736dd571c21961427b56648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
+
+       verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xprv", root.Derive([][]byte{[]byte{0x01, 0x02, 0x03}, []byte{}}).hex(),
+               "d81ba3ab554a7d09bfd8bda5089363399b7f4b19d4f1806ca0c35feabf7b074856648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
+       verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xprv", root.Derive([][]byte{[]byte{0x01, 0x02, 0x03}, []byte{}}).XPub().hex(),
+               "28279bcb06aee9e5c0302f4e1db879ac7f5444ec07266a736dd571c21961427b56648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
+       verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xpub", root.XPub().Derive([][]byte{[]byte{0x01, 0x02, 0x03}, []byte{}}).hex(),
+               "28279bcb06aee9e5c0302f4e1db879ac7f5444ec07266a736dd571c21961427b56648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
+}
+
+func TestVectors2(t *testing.T) {
+       seed, _ := hex.DecodeString("fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542")
+       root := RootXPrv(seed)
+
+       verifyTestVector(t, "Root(fffcf9...).xprv", root.hex(),
+               "0031615bdf7906a19360f08029354d12eaaedc9046806aefd672e3b93b024e495a95ba63cf47903eb742cd1843a5252118f24c0c496e9213bd42de70f649a798")
+       verifyTestVector(t, "Root(fffcf9...).xpub", root.XPub().hex(),
+               "f153ef65bbfaec3c8fd4fceb0510529048094093cf7c14970013282973e117545a95ba63cf47903eb742cd1843a5252118f24c0c496e9213bd42de70f649a798")
+
+       verifyTestVector(t, "Root(fffcf9...)/0(N).xprv", root.Child([]byte{0x00}, false).hex(),
+               "883e65e6e86499bdd170c14d67e62359dd020dd63056a75ff75983a682024e49e8cc52d8e74c5dfd75b0b326c8c97ca7397b7f954ad0b655b8848bfac666f09f")
+       verifyTestVector(t, "Root(fffcf9...)/0(N).xpub", root.Child([]byte{0x00}, false).XPub().hex(),
+               "f48b7e641d119b8ddeaf97aca104ee6e6a780ab550d40534005443550ef7e7d8e8cc52d8e74c5dfd75b0b326c8c97ca7397b7f954ad0b655b8848bfac666f09f")
+       verifyTestVector(t, "Root(fffcf9...)/0(N).xpub", root.XPub().Child([]byte{0x00}).hex(),
+               "f48b7e641d119b8ddeaf97aca104ee6e6a780ab550d40534005443550ef7e7d8e8cc52d8e74c5dfd75b0b326c8c97ca7397b7f954ad0b655b8848bfac666f09f")
+
+       verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H).xprv", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).hex(),
+               "5048fa4498bf65e2b10d26e6c99cc43556ecfebf8b9fddf8bd2150ba29d63154044ef557a3aa4cb6ae8b61e87cb977a929bc4a170e4faafc2661231f5f3f78e8")
+       verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).XPub().hex(),
+               "a8555c5ee5054ad03c6c6661968d66768fa081103bf576ea63a26c00ca7eab69044ef557a3aa4cb6ae8b61e87cb977a929bc4a170e4faafc2661231f5f3f78e8")
+
+       verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N).xprv", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).hex(),
+               "480f6aa25f7c9f4a569896f06614303a697f00ee8d240c6277605d44e0d63154174c386ad6ae01e54acd7bb422243c6055058f4231e250050134283a76de8eff")
+       verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).XPub().hex(),
+               "7385ab0b06eacc226c8035bab1ff9bc6972c7700d1caede26fe2b4d57b208bd0174c386ad6ae01e54acd7bb422243c6055058f4231e250050134283a76de8eff")
+       verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).XPub().Child([]byte{0x01}).hex(),
+               "7385ab0b06eacc226c8035bab1ff9bc6972c7700d1caede26fe2b4d57b208bd0174c386ad6ae01e54acd7bb422243c6055058f4231e250050134283a76de8eff")
+
+       verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N)/2147483646(H).xprv", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).Child([]byte{0xfe, 0xff, 0xff, 0x7f}, true).hex(),
+               "386014c6dfeb8dadf62f0e5acacfbf7965d5746c8b9011df155a31df7be0fb59986c923d979d89310acd82171dbaa7b73b20b2033ac6819d7f309212ff3fbabd")
+       verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N)/2147483646(H).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).Child([]byte{0xfe, 0xff, 0xff, 0x7f}, true).XPub().hex(),
+               "9f66aa8019427a825dd72a13ce982454d99f221c8d4874db59f52c2945cbcabd986c923d979d89310acd82171dbaa7b73b20b2033ac6819d7f309212ff3fbabd")
+
+       verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N)/2147483646(H)/2(N).xprv", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).Child([]byte{0xfe, 0xff, 0xff, 0x7f}, true).Child([]byte{0x02}, false).hex(),
+               "08c3772f5c0eee42f40d00f4faff9e4c84e5db3c4e7f28ecb446945a1de1fb59ef9d0a352f3252ea673e8b6bd31ac97218e019e845bdc545c268cd52f7af3f5d")
+       verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N)/2147483646(H)/2(N).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).Child([]byte{0xfe, 0xff, 0xff, 0x7f}, true).Child([]byte{0x02}, false).XPub().hex(),
+               "67388f59a7b62644c3c6148575770e56969d77244530263bc9659b8563d7ff81ef9d0a352f3252ea673e8b6bd31ac97218e019e845bdc545c268cd52f7af3f5d")
+       verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N)/2147483646(H)/2(N).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).Child([]byte{0xfe, 0xff, 0xff, 0x7f}, true).XPub().Child([]byte{0x02}).hex(),
+               "67388f59a7b62644c3c6148575770e56969d77244530263bc9659b8563d7ff81ef9d0a352f3252ea673e8b6bd31ac97218e019e845bdc545c268cd52f7af3f5d")
+}
+
+func TestExpandedPrivateKey(t *testing.T) {
+       root := RootXPrv([]byte{0xca, 0xfe})
+       verifyTestVector(t, "Root(cafe).xprv", root.hex(),
+               "a0cde08fd2ea06e16dd5d21e64ca0609fa1d719b79fed4245a5b8ada0242464cebbc2b9e1e989aca72d9766efd9b63ebcfc968027ef27cb786babb7897f9248a")
+       verifyTestVector(t, "Root(cafe).xprv.expandedkey", root.ExpandedPrivateKey().hex(),
+               "a0cde08fd2ea06e16dd5d21e64ca0609fa1d719b79fed4245a5b8ada0242464c1437c8234e21e43eb9c79df0ce370dc82d4c7a952ef317e716b0762146bb61a0")
+
+       child := root.Child([]byte{0xbe, 0xef}, false)
+       verifyTestVector(t, "Root(cafe)/beef.xprv", child.hex(),
+               "684df1aa25e0425c48c76392f42abc87a359ef2a2328ad31e53318128242464cf85916f4261b03f71afa64ad4bc2be4f335f15e433e815b45bbd15fcc7d1a864")
+       verifyTestVector(t, "Root(cafe)/beef.xprv.expandedkey", child.ExpandedPrivateKey().hex(),
+               "684df1aa25e0425c48c76392f42abc87a359ef2a2328ad31e53318128242464c0abdda57709eff7e9c60e0d4199065a6941122566c0a30ffa3ce0449d0582278")
+}
+
+func TestChildKeys(t *testing.T) {
+       rootXPrv, err := NewXPrv(nil)
+       if err != nil {
+               t.Fatal(err)
+       }
+       rootXPub := rootXPrv.XPub()
+
+       msg := []byte("In the face of ignorance and resistance I wrote financial systems into existence")
+
+       sig := rootXPrv.Sign(msg)
+       doverify(t, rootXPub, msg, sig, "root xpub", "root xprv")
+
+       sel := []byte{1, 2, 3}
+       dprv := rootXPrv.Child(sel, false)
+       dpub := rootXPub.Child(sel)
+
+       sig = dprv.Sign(msg)
+       doverify(t, dpub, msg, sig, "derived xpub", "derived xprv")
+
+       dpub = dprv.XPub()
+       doverify(t, dpub, msg, sig, "xpub from derived xprv", "derived xprv")
+
+       dprv = dprv.Child(sel, false)
+       sig = dprv.Sign(msg)
+       dpub = dpub.Child(sel)
+       doverify(t, dpub, msg, sig, "double-derived xpub", "double-derived xprv")
+
+       for i := byte(0); i < 10; i++ {
+               sel := []byte{i}
+
+               // Non-hardened children
+               dprv := rootXPrv.Child(sel, false)
+               if reflect.DeepEqual(dprv, rootXPrv) {
+                       t.Errorf("derived private key %d is the same as the root", i)
+               }
+               dpub1 := rootXPub.Child(sel)
+               if reflect.DeepEqual(dpub1, rootXPub) {
+                       t.Errorf("derived public key %d is the same as the root", i)
+               }
+               sig := dprv.Sign(msg)
+               doverify(t, dpub1, msg, sig, fmt.Sprintf("derived pubkey (%d)", i), "derived xprv")
+
+               for j := byte(0); j < 10; j++ {
+                       sel2 := []byte{j}
+                       ddprv := dprv.Child(sel2, false)
+                       if reflect.DeepEqual(ddprv, dprv) {
+                               t.Errorf("rootXPrv.Child(%d).Child(%d) is the same as its parent", i, j)
+                       }
+                       ddpub1 := dpub1.Child(sel2)
+                       if reflect.DeepEqual(ddpub1, dpub1) {
+                               t.Errorf("rootXPub.Child(%d).Child(%d) is the same as its parent", i, j)
+                       }
+                       sig = ddprv.Sign(msg)
+                       doverify(t, ddpub1, msg, sig, fmt.Sprintf("double-derived pubkey (%d, %d)", i, j), "double-derived xprv")
+               }
+
+               // Hardened children
+               hdprv := rootXPrv.Child(sel, true)
+               if reflect.DeepEqual(hdprv, rootXPrv) {
+                       t.Errorf("derived hardened privkey %d is the same as the root", i)
+               }
+               if reflect.DeepEqual(hdprv, dprv) {
+                       t.Errorf("derived hardened privkey %d is the same as the unhardened derived privkey", i)
+               }
+               hdpub := hdprv.XPub()
+               if reflect.DeepEqual(hdpub, dpub1) {
+                       t.Errorf("pubkey of hardened child %d is the same as pubkey of non-hardened child", i)
+               }
+               sig = hdprv.Sign(msg)
+               doverify(t, hdpub, msg, sig, fmt.Sprintf("pubkey of hardened child %d", i), "derived xprv")
+       }
+}
+
+func doverify(t *testing.T, xpub XPub, msg, sig []byte, xpubdesc, xprvdesc string) {
+       if !xpub.Verify(msg, sig) {
+               t.Errorf("%s cannot verify signature from %s", xpubdesc, xprvdesc)
+       }
+
+       for i := 0; i < 32; i++ {
+               for mask := byte(1); mask != 0; mask <<= 1 {
+                       xpub[i] ^= mask
+                       if xpub.Verify(msg, sig) {
+                               t.Fatalf("altered %s should not verify signature from %s", xpubdesc, xprvdesc)
+                       }
+                       xpub[i] ^= mask
+               }
+       }
+
+       // permute only 1/7th of the bits to make tests run faster
+       for i := 0; i < len(msg); i += 7 {
+               for mask := byte(1); mask != 0; mask <<= 1 {
+                       msg[i] ^= mask
+                       if xpub.Verify(msg, sig) {
+                               t.Fatalf("%s should not verify signature from %s against altered message", xpubdesc, xprvdesc)
+                       }
+                       msg[i] ^= mask
+               }
+       }
+
+       for i := 0; i < len(sig); i++ {
+               for mask := byte(1); mask != 0; mask <<= 1 {
+                       sig[i] ^= mask
+                       if xpub.Verify(msg, sig) {
+                               t.Fatalf("%s should not verify altered signature from %s", xpubdesc, xprvdesc)
+                       }
+                       sig[i] ^= mask
+               }
+       }
+}
+
+func verifyTestVector(t *testing.T, message string, got []byte, want string) {
+       if !bytes.Equal(got, []byte(want)) {
+               t.Errorf("ChainKD Test Vector: %s:\n    got  = %s\n    want = %s", message, got, want)
+       }
+}
+
+func (xpub XPub) hex() []byte {
+       s, _ := xpub.MarshalText()
+       return s
+}
+
+func (xprv XPrv) hex() []byte {
+       s, _ := xprv.MarshalText()
+       return s
+}
+
+func (key ExpandedPrivateKey) hex() []byte {
+       hexBytes := make([]byte, hex.EncodedLen(len(key[:])))
+       hex.Encode(hexBytes, key[:])
+       return hexBytes
+}
+
+func TestBits(t *testing.T) {
+       for i := 0; i < 256; i++ {
+               root := RootXPrv([]byte{byte(i)})
+
+               rootbytes := root.Bytes()
+               if rootbytes[0]&7 != 0 {
+                       t.Errorf("ChainKD root key must have low 3 bits set to '000'")
+               }
+               if (rootbytes[31] >> 5) != 2 {
+                       t.Errorf("ChainKD root key must have high 3 bits set to '010'")
+               }
+
+               xprv := root
+               for d := 0; d < 1000; d++ { // at least after 1000 levels necessary bits are survived
+                       xprv = xprv.Child([]byte("child"), false)
+                       xprvbytes := xprv.Bytes()
+
+                       if xprvbytes[0]&7 != 0 {
+                               t.Errorf("ChainKD non-hardened child key must have low 3 bits set to '000'")
+                       }
+                       if xprvbytes[31]>>6 != 1 {
+                               t.Errorf("ChainKD non-hardened child key must have high 2 bits set to '10' (LE)")
+                       }
+
+                       hchild := xprv.Child([]byte("hardened child"), true)
+                       hchildbytes := hchild.Bytes()
+                       if hchildbytes[0]&7 != 0 {
+                               t.Errorf("ChainKD hardened key must have low 3 bits set to '000'")
+                       }
+                       if (hchildbytes[31] >> 5) != 2 {
+                               t.Errorf("ChainKD hardened key must have high 3 bits set to '010'")
+                       }
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/chainkd/expanded_key.go b/vendor/github.com/bytom/crypto/ed25519/chainkd/expanded_key.go
new file mode 100644 (file)
index 0000000..fbc5db1
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/chainkd/expanded_key.go
@@ -0,0 +1,102 @@
+// Package chainkd This is an extension to ed25519.Sign that is compatible with NaCl `crypto_sign`
+// function taking 64-byte expanded private key (where the left part is a pre-multiplied
+// scalar and the right part is "prefix" used for generating a nonce).
+//
+// Invariants:
+// 1) Expanded(PrivateKey).Sign() == PrivateKey.Sign()
+// 2) InnerSign(Expanded(PrivateKey)) == Sign(PrivateKey)
+package chainkd
+
+import (
+       "crypto"
+       "crypto/sha512"
+       "errors"
+       "io"
+       "strconv"
+
+       "github.com/bytom/crypto/ed25519"
+       "github.com/bytom/crypto/ed25519/internal/edwards25519"
+)
+
+const (
+       // ExpandedPrivateKeySize is the size, in bytes, of a "secret key" as defined in NaCl.
+       ExpandedPrivateKeySize = 64
+)
+
+// ExpandedPrivateKey is the type of NaCl secret keys. It implements crypto.Signer.
+type ExpandedPrivateKey []byte
+
+// Public returns the PublicKey corresponding to secret key.
+func (priv ExpandedPrivateKey) Public() crypto.PublicKey {
+       var A edwards25519.ExtendedGroupElement
+       var scalar [32]byte
+       copy(scalar[:], priv[:32])
+       edwards25519.GeScalarMultBase(&A, &scalar)
+       var publicKeyBytes [32]byte
+       A.ToBytes(&publicKeyBytes)
+       return ed25519.PublicKey(publicKeyBytes[:])
+}
+
+func expandEd25519PrivateKey(priv ed25519.PrivateKey) ExpandedPrivateKey {
+       digest := sha512.Sum512(priv[:32])
+       digest[0] &= 248
+       digest[31] &= 127
+       digest[31] |= 64
+       return ExpandedPrivateKey(digest[:])
+}
+
+// Sign signs the given message with expanded private key.
+// Ed25519 performs two passes over messages to be signed and therefore cannot
+// handle pre-hashed messages. Thus opts.HashFunc() must return zero to
+// indicate the message hasn't been hashed. This can be achieved by passing
+// crypto.Hash(0) as the value for opts.
+func (priv ExpandedPrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error) {
+       if opts.HashFunc() != crypto.Hash(0) {
+               return nil, errors.New("ed25519: cannot sign hashed message")
+       }
+
+       return Ed25519InnerSign(priv, message), nil
+}
+
+// Ed25519InnerSign signs the message with expanded private key and returns a signature.
+// It will panic if len(privateKey) is not ExpandedPrivateKeySize.
+func Ed25519InnerSign(privateKey ExpandedPrivateKey, message []byte) []byte {
+       if l := len(privateKey); l != ExpandedPrivateKeySize {
+               panic("ed25519: bad private key length: " + strconv.Itoa(l))
+       }
+
+       var messageDigest, hramDigest [64]byte
+
+       h := sha512.New()
+       h.Write(privateKey[32:])
+       h.Write(message)
+       h.Sum(messageDigest[:0])
+
+       var messageDigestReduced [32]byte
+       edwards25519.ScReduce(&messageDigestReduced, &messageDigest)
+       var R edwards25519.ExtendedGroupElement
+       edwards25519.GeScalarMultBase(&R, &messageDigestReduced)
+
+       var encodedR [32]byte
+       R.ToBytes(&encodedR)
+
+       publicKey := privateKey.Public().(ed25519.PublicKey)
+       h.Reset()
+       h.Write(encodedR[:])
+       h.Write(publicKey[:])
+       h.Write(message)
+       h.Sum(hramDigest[:0])
+       var hramDigestReduced [32]byte
+       edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
+
+       var sk [32]byte
+       copy(sk[:], privateKey[:32])
+       var s [32]byte
+       edwards25519.ScMulAdd(&s, &hramDigestReduced, &sk, &messageDigestReduced)
+
+       signature := make([]byte, ed25519.SignatureSize)
+       copy(signature[:], encodedR[:])
+       copy(signature[32:], s[:])
+
+       return signature
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/chainkd/expanded_key_test.go b/vendor/github.com/bytom/crypto/ed25519/chainkd/expanded_key_test.go
new file mode 100644 (file)
index 0000000..355ce1f
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/chainkd/expanded_key_test.go
@@ -0,0 +1,97 @@
+package chainkd
+
+import (
+       "bytes"
+       "crypto"
+       "testing"
+
+       "github.com/bytom/crypto/ed25519"
+)
+
+// Testing basic InnerSign+Verify and the invariants:
+// 1) Expand(PrivateKey).Sign() == PrivateKey.Sign()
+// 2) InnerSign(Expand(PrivateKey)) == Sign(PrivateKey)
+
+type zeroReader struct{}
+
+func (zeroReader) Read(buf []byte) (int, error) {
+       for i := range buf {
+               buf[i] = 0
+       }
+       return len(buf), nil
+}
+
+func TestInnerSignVerify(t *testing.T) {
+       var zero zeroReader
+       public, private, _ := ed25519.GenerateKey(zero)
+       expprivate := expandEd25519PrivateKey(private)
+
+       message := []byte("test message")
+       sig := Ed25519InnerSign(expprivate, message)
+       if !ed25519.Verify(public, message, sig) {
+               t.Errorf("valid signature rejected")
+       }
+
+       wrongMessage := []byte("wrong message")
+       if ed25519.Verify(public, wrongMessage, sig) {
+               t.Errorf("signature of different message accepted")
+       }
+}
+
+func TestExpandedKeySignerInterfaceInvariant(t *testing.T) {
+       var zero zeroReader
+       public, private, _ := ed25519.GenerateKey(zero)
+       expprivate := expandEd25519PrivateKey(private)
+
+       signer1 := crypto.Signer(private)
+       signer2 := crypto.Signer(expprivate)
+
+       publicInterface1 := signer1.Public()
+       publicInterface2 := signer2.Public()
+       public1, ok := publicInterface1.(ed25519.PublicKey)
+       if !ok {
+               t.Fatalf("expected PublicKey from Public() but got %T", publicInterface1)
+       }
+       public2, ok := publicInterface2.(ed25519.PublicKey)
+       if !ok {
+               t.Fatalf("expected PublicKey from Public() but got %T", publicInterface2)
+       }
+
+       if !bytes.Equal(public, public1) {
+               t.Errorf("public keys do not match: original:%x vs Public():%x", public, public1)
+       }
+       if !bytes.Equal(public, public2) {
+               t.Errorf("public keys do not match: original:%x vs Public():%x", public, public2)
+       }
+
+       message := []byte("message")
+       var noHash crypto.Hash
+       signature1, err := signer1.Sign(zero, message, noHash)
+       if err != nil {
+               t.Fatalf("error from Sign(): %s", err)
+       }
+       signature2, err := signer2.Sign(zero, message, noHash)
+       if err != nil {
+               t.Fatalf("error from Sign(): %s", err)
+       }
+       if !bytes.Equal(signature1[:], signature2[:]) {
+               t.Errorf(".Sign() should return identical signatures for Signer(privkey) and Signer(Expand(privkey))")
+       }
+       if !ed25519.Verify(public, message, signature1) {
+               t.Errorf("Verify failed on signature from Sign()")
+       }
+}
+
+func TestInnerSignInvariant(t *testing.T) {
+       var zero zeroReader
+       _, private, _ := ed25519.GenerateKey(zero)
+       expprivate := expandEd25519PrivateKey(private)
+
+       message := []byte("test message")
+       sig1 := ed25519.Sign(private, message)
+       sig2 := Ed25519InnerSign(expprivate, message)
+
+       if !bytes.Equal(sig1[:], sig2[:]) {
+               t.Errorf("InnerSign(Expand(privkey)) must return the same as Sign(privkey)")
+       }
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/chainkd/serialize.go b/vendor/github.com/bytom/crypto/ed25519/chainkd/serialize.go
new file mode 100644 (file)
index 0000000..81b435a
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/chainkd/serialize.go
@@ -0,0 +1,60 @@
+package chainkd
+
+import (
+       "encoding/hex"
+       "errors"
+)
+
+const (
+       extendedPublicKeySize  = 64
+       extendedPrivateKeySize = 64
+)
+
+var (
+       ErrBadKeyLen = errors.New("bad key length")
+       ErrBadKeyStr = errors.New("bad key string")
+)
+
+func (xpub XPub) MarshalText() ([]byte, error) {
+       hexBytes := make([]byte, hex.EncodedLen(len(xpub.Bytes())))
+       hex.Encode(hexBytes, xpub.Bytes())
+       return hexBytes, nil
+}
+
+func (xpub XPub) Bytes() []byte {
+       return xpub[:]
+}
+
+func (xprv XPrv) MarshalText() ([]byte, error) {
+       hexBytes := make([]byte, hex.EncodedLen(len(xprv.Bytes())))
+       hex.Encode(hexBytes, xprv.Bytes())
+       return hexBytes, nil
+}
+
+func (xprv XPrv) Bytes() []byte {
+       return xprv[:]
+}
+
+func (xpub *XPub) UnmarshalText(inp []byte) error {
+       if len(inp) != 2*extendedPublicKeySize {
+               return ErrBadKeyStr
+       }
+       _, err := hex.Decode(xpub[:], inp)
+       return err
+}
+
+func (xpub XPub) String() string {
+       return hex.EncodeToString(xpub.Bytes())
+}
+
+func (xprv *XPrv) UnmarshalText(inp []byte) error {
+       if len(inp) != 2*extendedPrivateKeySize {
+               return ErrBadKeyStr
+       }
+       _, err := hex.Decode(xprv[:], inp)
+       return err
+}
+
+func (xprv XPrv) String() string {
+       return hex.EncodeToString(xprv.Bytes())
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/chainkd/serialize_test.go b/vendor/github.com/bytom/crypto/ed25519/chainkd/serialize_test.go
new file mode 100644 (file)
index 0000000..142549d
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/chainkd/serialize_test.go
@@ -0,0 +1,37 @@
+package chainkd
+
+import (
+       "bytes"
+       "encoding/hex"
+       "encoding/json"
+       "reflect"
+       "testing"
+)
+
+func TestMarshalingFuncs(t *testing.T) {
+       xprv, err := NewXPrv(nil)
+       if err != nil {
+               t.Fatal(err)
+       }
+
+       want := make([]byte, hex.EncodedLen(len(xprv.Bytes())))
+       hex.Encode(want, xprv.Bytes())
+
+       got, err := json.Marshal(xprv)
+       if err != nil {
+               t.Fatal(err)
+       }
+       // First and last bytes are "
+       if !reflect.DeepEqual(want, got[1:len(got)-1]) {
+               t.Errorf("marshaling error: want = %+v, got = %+v", want, got)
+       }
+
+       secXprv := new(XPrv)
+       err = json.Unmarshal(got, &secXprv)
+       if err != nil {
+               t.Fatal(err)
+       }
+       if !bytes.Equal(xprv[:], secXprv[:]) {
+               t.Errorf("unmarshaling error: want = %+v, got = %+v", xprv, secXprv)
+       }
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/chainkd/util.go b/vendor/github.com/bytom/crypto/ed25519/chainkd/util.go
new file mode 100644 (file)
index 0000000..194b20e
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/chainkd/util.go
@@ -0,0 +1,34 @@
+package chainkd
+
+import (
+       "io"
+
+       "github.com/bytom/crypto/ed25519"
+)
+
+// Utility functions
+
+func NewXKeys(r io.Reader) (xprv XPrv, xpub XPub, err error) {
+       xprv, err = NewXPrv(r)
+       if err != nil {
+               return
+       }
+       return xprv, xprv.XPub(), nil
+}
+
+func XPubKeys(xpubs []XPub) []ed25519.PublicKey {
+       res := make([]ed25519.PublicKey, 0, len(xpubs))
+       for _, xpub := range xpubs {
+               res = append(res, xpub.PublicKey())
+       }
+       return res
+}
+
+func DeriveXPubs(xpubs []XPub, path [][]byte) []XPub {
+       res := make([]XPub, 0, len(xpubs))
+       for _, xpub := range xpubs {
+               d := xpub.Derive(path)
+               res = append(res, d)
+       }
+       return res
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/ecmath/point.go b/vendor/github.com/bytom/crypto/ed25519/ecmath/point.go
new file mode 100644 (file)
index 0000000..9ec0d75
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/ecmath/point.go
@@ -0,0 +1,91 @@
+package ecmath
+
+import (
+       "crypto/subtle"
+
+       "github.com/bytom/crypto/ed25519/internal/edwards25519"
+)
+
+// Point is a point on the ed25519 curve.
+type Point edwards25519.ExtendedGroupElement
+
+// ZeroPoint is the zero point on the ed25519 curve (not the zero value of Point).
+var ZeroPoint Point
+
+// Add adds the points in x and y, storing the result in z and
+// returning that. Any or all of x, y, and z may be the same pointers.
+func (z *Point) Add(x, y *Point) *Point {
+       var y2 edwards25519.CachedGroupElement
+       (*edwards25519.ExtendedGroupElement)(y).ToCached(&y2)
+
+       var z2 edwards25519.CompletedGroupElement
+       edwards25519.GeAdd(&z2, (*edwards25519.ExtendedGroupElement)(x), &y2)
+
+       z2.ToExtended((*edwards25519.ExtendedGroupElement)(z))
+       return z
+}
+
+// Sub subtracts y from x, storing the result in z and
+// returning that. Any or all of x, y, and z may be the same pointers.
+func (z *Point) Sub(x, y *Point) *Point {
+       var y2 edwards25519.CachedGroupElement
+       (*edwards25519.ExtendedGroupElement)(y).ToCached(&y2)
+
+       var z2 edwards25519.CompletedGroupElement
+       edwards25519.GeSub(&z2, (*edwards25519.ExtendedGroupElement)(x), &y2)
+
+       z2.ToExtended((*edwards25519.ExtendedGroupElement)(z))
+       return z
+}
+
+// ScMul multiplies the EC point x by the scalar y, placing the result
+// in z and returning that. X and z may be the same pointer.
+func (z *Point) ScMul(x *Point, y *Scalar) *Point {
+       return z.ScMulAdd(x, y, &Zero)
+}
+
+// ScMulBase multiplies the ed25519 base point by x and places the
+// result in z, returning that.
+func (z *Point) ScMulBase(x *Scalar) *Point {
+       edwards25519.GeScalarMultBase((*edwards25519.ExtendedGroupElement)(z), (*[32]byte)(x))
+       return z
+}
+
+// ScMulAdd computes xa+yB, where B is the ed25519 base point, and
+// places the result in z, returning that.
+func (z *Point) ScMulAdd(a *Point, x, y *Scalar) *Point {
+       // TODO: replace with constant-time implementation to avoid
+       // sidechannel attacks
+
+       var p edwards25519.ProjectiveGroupElement
+       edwards25519.GeDoubleScalarMultVartime(&p, (*[32]byte)(x), (*edwards25519.ExtendedGroupElement)(a), (*[32]byte)(y))
+
+       var buf [32]byte
+       p.ToBytes(&buf)
+       // TODO(bobg): double-check that it's OK to ignore the return value
+       // from ExtendedGroupElement.FromBytes here. (It's a bool indicating
+       // that its input represented a legal value.)
+       (*edwards25519.ExtendedGroupElement)(z).FromBytes(&buf)
+       return z
+}
+
+func (z *Point) Encode() [32]byte {
+       var e [32]byte
+       (*edwards25519.ExtendedGroupElement)(z).ToBytes(&e)
+       return e
+}
+
+func (z *Point) Decode(e [32]byte) (*Point, bool) {
+       ok := (*edwards25519.ExtendedGroupElement)(z).FromBytes(&e)
+       return z, ok
+}
+
+func (z *Point) ConstTimeEqual(x *Point) bool {
+       xe := x.Encode()
+       ze := z.Encode()
+       return subtle.ConstantTimeCompare(xe[:], ze[:]) == 1
+}
+
+func init() {
+       (*edwards25519.ExtendedGroupElement)(&ZeroPoint).Zero()
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/ecmath/point_test.go b/vendor/github.com/bytom/crypto/ed25519/ecmath/point_test.go
new file mode 100644 (file)
index 0000000..4de539a
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/ecmath/point_test.go
@@ -0,0 +1,44 @@
+package ecmath
+
+import "testing"
+
+// base is the ed25519 base point
+var base Point
+
+func init() {
+       base.ScMulBase(&One)
+}
+
+func TestBasePointArith(t *testing.T) {
+       var base1 Point
+       base1.ScMul(&base, &One)
+       if !base.ConstTimeEqual(&base1) {
+               ebase := base.Encode()
+               ebase1 := base1.Encode()
+               t.Errorf("base [%x] != 1*base [%x]", ebase[:], ebase1[:])
+       }
+
+       Two := One
+       Two.Add(&Two, &One)
+
+       base2a := base
+       base2a.Add(&base2a, &base)
+
+       base2b := base
+       base2b.ScMul(&base2b, &Two)
+
+       if !base2a.ConstTimeEqual(&base2b) {
+               ebase2a := base2a.Encode()
+               ebase2b := base2b.Encode()
+               t.Errorf("base+base [%x] != 2*base [%x] (1)", ebase2a[:], ebase2b[:])
+       }
+
+       var base2c Point
+       base2c.ScMulBase(&Two)
+
+       if !base2a.ConstTimeEqual(&base2c) {
+               ebase2a := base2a.Encode()
+               ebase2c := base2c.Encode()
+               t.Errorf("base+base [%x] != 2*base [%x] (2)", ebase2a[:], ebase2c[:])
+       }
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/ecmath/scalar.go b/vendor/github.com/bytom/crypto/ed25519/ecmath/scalar.go
new file mode 100644 (file)
index 0000000..651f2ca
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/ecmath/scalar.go
@@ -0,0 +1,78 @@
+package ecmath
+
+import (
+       "crypto/subtle"
+
+       "github.com/bytom/crypto/ed25519/internal/edwards25519"
+)
+
+// Scalar is a 256-bit little-endian scalar.
+type Scalar [32]byte
+
+var (
+       // Zero is the number 0.
+       Zero Scalar
+
+       // One is the number 1.
+       One = Scalar{1}
+
+       // NegOne is the number -1 mod L
+       NegOne = Scalar{
+               0xec, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
+               0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
+               0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+               0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
+       }
+
+       // L is the subgroup order:
+       // 2^252 + 27742317777372353535851937790883648493
+       L = Scalar{
+               0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
+               0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
+               0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+               0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
+       }
+)
+
+// Add computes x+y (mod L) and places the result in z, returning
+// that. Any or all of x, y, and z may be the same pointer.
+func (z *Scalar) Add(x, y *Scalar) *Scalar {
+       return z.MulAdd(x, &One, y)
+}
+
+// Sub computes x-y (mod L) and places the result in z, returning
+// that. Any or all of x, y, and z may be the same pointer.
+func (z *Scalar) Sub(x, y *Scalar) *Scalar {
+       return z.MulAdd(y, &NegOne, x)
+}
+
+// Neg negates x (mod L) and places the result in z, returning that. X
+// and z may be the same pointer.
+func (z *Scalar) Neg(x *Scalar) *Scalar {
+       return z.MulAdd(x, &NegOne, &Zero)
+}
+
+// MulAdd computes ab+c (mod L) and places the result in z, returning
+// that. Any or all of the pointers may be the same.
+func (z *Scalar) MulAdd(a, b, c *Scalar) *Scalar {
+       edwards25519.ScMulAdd((*[32]byte)(z), (*[32]byte)(a), (*[32]byte)(b), (*[32]byte)(c))
+       return z
+}
+
+func (z *Scalar) Equal(x *Scalar) bool {
+       return subtle.ConstantTimeCompare(x[:], z[:]) == 1
+}
+
+// Prune performs the pruning operation in-place.
+func (z *Scalar) Prune() {
+       z[0] &= 248
+       z[31] &= 127
+       z[31] |= 64
+}
+
+// Reduce takes a 512-bit scalar and reduces it mod L, placing the
+// result in z and returning that.
+func (z *Scalar) Reduce(x *[64]byte) *Scalar {
+       edwards25519.ScReduce((*[32]byte)(z), x)
+       return z
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/ed25519.go b/vendor/github.com/bytom/crypto/ed25519/ed25519.go
new file mode 100644 (file)
index 0000000..a41d10a
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/ed25519.go
@@ -0,0 +1,206 @@
+// Package ed25519 implements the Ed25519 signature algorithm. See
+// http://ed25519.cr.yp.to/.
+//
+// These functions are also compatible with the “Ed25519” function defined in
+// https://tools.ietf.org/html/draft-irtf-cfrg-eddsa-05.
+package ed25519
+
+// This code is a port of the public domain, “ref10” implementation of ed25519
+// from SUPERCOP.
+
+import (
+       cryptorand "crypto/rand"
+       "crypto/sha512"
+       "crypto/subtle"
+       "encoding/hex"
+       "io"
+       "strconv"
+
+       "github.com/bytom/crypto/ed25519/internal/edwards25519"
+)
+
+const (
+       // PublicKeySize is the size, in bytes, of public keys as used in this package.
+       PublicKeySize = 32
+       // PrivateKeySize is the size, in bytes, of private keys as used in this package.
+       PrivateKeySize = 64
+       // SignatureSize is the size, in bytes, of signatures generated and verified by this package.
+       SignatureSize = 64
+       // SeedSize is the size, in bytes, of private key seeds. These are the private key representations used by RFC 8032.
+       SeedSize = 32
+)
+
+// PublicKey is the type of Ed25519 public keys.
+type PublicKey []byte
+
+// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.
+type PrivateKey []byte
+
+// Public returns the PublicKey corresponding to priv.
+func (priv PrivateKey) Public() PublicKey {
+       publicKey := make([]byte, PublicKeySize)
+       copy(publicKey, priv[32:])
+       return PublicKey(publicKey)
+}
+
+// Seed returns the private key seed corresponding to priv. It is provided for
+// interoperability with RFC 8032. RFC 8032's private keys correspond to seeds
+// in this package.
+func (priv PrivateKey) Seed() []byte {
+       seed := make([]byte, SeedSize)
+       copy(seed, priv[:32])
+       return seed
+}
+
+func (priv PrivateKey) String() string {
+       return hex.EncodeToString(priv)
+}
+
+// GenerateKey generates a public/private key pair using entropy from rand.
+// If rand is nil, crypto/rand.Reader will be used.
+func GenerateKey(rand io.Reader) (publicKey PublicKey, privateKey PrivateKey, err error) {
+       if rand == nil {
+               rand = cryptorand.Reader
+       }
+
+       privateKey = make([]byte, PrivateKeySize)
+       publicKey = make([]byte, PublicKeySize)
+       _, err = io.ReadFull(rand, privateKey[:32])
+       if err != nil {
+               return nil, nil, err
+       }
+
+       digest := sha512.Sum512(privateKey[:32])
+       digest[0] &= 248
+       digest[31] &= 127
+       digest[31] |= 64
+
+       var A edwards25519.ExtendedGroupElement
+       var hBytes [32]byte
+       copy(hBytes[:], digest[:])
+       edwards25519.GeScalarMultBase(&A, &hBytes)
+       var publicKeyBytes [32]byte
+       A.ToBytes(&publicKeyBytes)
+
+       copy(privateKey[32:], publicKeyBytes[:])
+       copy(publicKey, publicKeyBytes[:])
+
+       return publicKey, privateKey, nil
+}
+
+// NewKeyFromSeed calculates a private key from a seed. It will panic if
+// len(seed) is not SeedSize. This function is provided for interoperability
+// with RFC 8032. RFC 8032's private keys correspond to seeds in this
+// package.
+func NewKeyFromSeed(seed []byte) PrivateKey {
+       if l := len(seed); l != SeedSize {
+               panic("ed25519: bad seed length: " + strconv.Itoa(l))
+       }
+
+       digest := sha512.Sum512(seed)
+       digest[0] &= 248
+       digest[31] &= 127
+       digest[31] |= 64
+
+       var A edwards25519.ExtendedGroupElement
+       var hBytes [32]byte
+       copy(hBytes[:], digest[:])
+       edwards25519.GeScalarMultBase(&A, &hBytes)
+       var publicKeyBytes [32]byte
+       A.ToBytes(&publicKeyBytes)
+
+       privateKey := make([]byte, PrivateKeySize)
+       copy(privateKey, seed)
+       copy(privateKey[32:], publicKeyBytes[:])
+
+       return privateKey
+}
+
+// Sign signs the message with privateKey and returns a signature. It will
+// panic if len(privateKey) is not PrivateKeySize.
+func Sign(privateKey PrivateKey, message []byte) []byte {
+       if l := len(privateKey); l != PrivateKeySize {
+               panic("ed25519: bad private key length: " + strconv.Itoa(l))
+       }
+
+       h := sha512.New()
+       h.Write(privateKey[:32])
+
+       var digest1, messageDigest, hramDigest [64]byte
+       var expandedSecretKey [32]byte
+       h.Sum(digest1[:0])
+       copy(expandedSecretKey[:], digest1[:])
+       expandedSecretKey[0] &= 248
+       expandedSecretKey[31] &= 63
+       expandedSecretKey[31] |= 64
+
+       h.Reset()
+       h.Write(digest1[32:])
+       h.Write(message)
+       h.Sum(messageDigest[:0])
+
+       var messageDigestReduced [32]byte
+       edwards25519.ScReduce(&messageDigestReduced, &messageDigest)
+       var R edwards25519.ExtendedGroupElement
+       edwards25519.GeScalarMultBase(&R, &messageDigestReduced)
+
+       var encodedR [32]byte
+       R.ToBytes(&encodedR)
+
+       h.Reset()
+       h.Write(encodedR[:])
+       h.Write(privateKey[32:])
+       h.Write(message)
+       h.Sum(hramDigest[:0])
+       var hramDigestReduced [32]byte
+       edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
+
+       var s [32]byte
+       edwards25519.ScMulAdd(&s, &hramDigestReduced, &expandedSecretKey, &messageDigestReduced)
+
+       signature := make([]byte, SignatureSize)
+       copy(signature[:], encodedR[:])
+       copy(signature[32:], s[:])
+
+       return signature
+}
+
+// Verify reports whether sig is a valid signature of message by publicKey. It
+// will panic if len(publicKey) is not PublicKeySize.
+func Verify(publicKey PublicKey, message, sig []byte) bool {
+       if l := len(publicKey); l != PublicKeySize {
+               panic("ed25519: bad public key length: " + strconv.Itoa(l))
+       }
+
+       if len(sig) != SignatureSize || sig[63]&224 != 0 {
+               return false
+       }
+
+       var A edwards25519.ExtendedGroupElement
+       var publicKeyBytes [32]byte
+       copy(publicKeyBytes[:], publicKey)
+       if !A.FromBytes(&publicKeyBytes) {
+               return false
+       }
+       edwards25519.FeNeg(&A.X, &A.X)
+       edwards25519.FeNeg(&A.T, &A.T)
+
+       h := sha512.New()
+       h.Write(sig[:32])
+       h.Write(publicKey[:])
+       h.Write(message)
+       var digest [64]byte
+       h.Sum(digest[:0])
+
+       var hReduced [32]byte
+       edwards25519.ScReduce(&hReduced, &digest)
+
+       var R edwards25519.ProjectiveGroupElement
+       var b [32]byte
+       copy(b[:], sig[32:])
+       edwards25519.GeDoubleScalarMultVartime(&R, &hReduced, &A, &b)
+
+       var checkR [32]byte
+       R.ToBytes(&checkR)
+       return subtle.ConstantTimeCompare(sig[:32], checkR[:]) == 1
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/ed25519_test.go b/vendor/github.com/bytom/crypto/ed25519/ed25519_test.go
new file mode 100644 (file)
index 0000000..e0d5a1d
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/ed25519_test.go
@@ -0,0 +1,155 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file at
+// https://github.com/golang/crypto/blob/master/LICENSE.
+
+package ed25519
+
+import (
+       "bufio"
+       "bytes"
+       "compress/gzip"
+       "crypto/rand"
+       "encoding/hex"
+       "os"
+       "strings"
+       "testing"
+
+       "github.com/bytom/crypto/ed25519/internal/edwards25519"
+)
+
+type zeroReader struct{}
+
+func (zeroReader) Read(buf []byte) (int, error) {
+       for i := range buf {
+               buf[i] = 0
+       }
+       return len(buf), nil
+}
+
+func TestUnmarshalMarshal(t *testing.T) {
+       pub, _, _ := GenerateKey(rand.Reader)
+
+       var A edwards25519.ExtendedGroupElement
+       var pubBytes [32]byte
+       copy(pubBytes[:], pub)
+       if !A.FromBytes(&pubBytes) {
+               t.Fatalf("ExtendedGroupElement.FromBytes failed")
+       }
+
+       var pub2 [32]byte
+       A.ToBytes(&pub2)
+
+       if pubBytes != pub2 {
+               t.Errorf("FromBytes(%v)->ToBytes does not round-trip, got %x\n", pubBytes, pub2)
+       }
+}
+
+func TestSignVerify(t *testing.T) {
+       var zero zeroReader
+       public, private, _ := GenerateKey(zero)
+
+       message := []byte("test message")
+       sig := Sign(private, message)
+       if !Verify(public, message, sig) {
+               t.Errorf("valid signature rejected")
+       }
+
+       wrongMessage := []byte("wrong message")
+       if Verify(public, wrongMessage, sig) {
+               t.Errorf("signature of different message accepted")
+       }
+}
+
+func TestGolden(t *testing.T) {
+       // sign.input.gz is a selection of test cases from
+       // http://ed25519.cr.yp.to/python/sign.input
+       testDataZ, err := os.Open("testdata/sign.input.gz")
+       if err != nil {
+               t.Fatal(err)
+       }
+       defer testDataZ.Close()
+       testData, err := gzip.NewReader(testDataZ)
+       if err != nil {
+               t.Fatal(err)
+       }
+       defer testData.Close()
+
+       scanner := bufio.NewScanner(testData)
+       lineNo := 0
+
+       for scanner.Scan() {
+               lineNo++
+
+               line := scanner.Text()
+               parts := strings.Split(line, ":")
+               if len(parts) != 5 {
+                       t.Fatalf("bad number of parts on line %d", lineNo)
+               }
+
+               privBytes, _ := hex.DecodeString(parts[0])
+               pubKey, _ := hex.DecodeString(parts[1])
+               msg, _ := hex.DecodeString(parts[2])
+               sig, _ := hex.DecodeString(parts[3])
+               // The signatures in the test vectors also include the message
+               // at the end, but we just want R and S.
+               sig = sig[:SignatureSize]
+
+               if l := len(pubKey); l != PublicKeySize {
+                       t.Fatalf("bad public key length on line %d: got %d bytes", lineNo, l)
+               }
+
+               var priv [PrivateKeySize]byte
+               copy(priv[:], privBytes)
+               copy(priv[32:], pubKey)
+
+               sig2 := Sign(priv[:], msg)
+               if !bytes.Equal(sig, sig2[:]) {
+                       t.Errorf("different signature result on line %d: %x vs %x", lineNo, sig, sig2)
+               }
+
+               if !Verify(pubKey, msg, sig2) {
+                       t.Errorf("signature failed to verify on line %d", lineNo)
+               }
+       }
+
+       if err := scanner.Err(); err != nil {
+               t.Fatalf("error reading test data: %s", err)
+       }
+}
+
+func BenchmarkKeyGeneration(b *testing.B) {
+       var zero zeroReader
+       for i := 0; i < b.N; i++ {
+               if _, _, err := GenerateKey(zero); err != nil {
+                       b.Fatal(err)
+               }
+       }
+}
+
+func BenchmarkSigning(b *testing.B) {
+       var zero zeroReader
+       _, priv, err := GenerateKey(zero)
+       if err != nil {
+               b.Fatal(err)
+       }
+       message := []byte("Hello, world!")
+       b.ResetTimer()
+       for i := 0; i < b.N; i++ {
+               Sign(priv, message)
+       }
+}
+
+func BenchmarkVerification(b *testing.B) {
+       var zero zeroReader
+       pub, priv, err := GenerateKey(zero)
+       if err != nil {
+               b.Fatal(err)
+       }
+       message := []byte("Hello, world!")
+       signature := Sign(priv, message)
+       b.ResetTimer()
+       for i := 0; i < b.N; i++ {
+               Verify(pub, message, signature)
+       }
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/internal/edwards25519/chain_export.go b/vendor/github.com/bytom/crypto/ed25519/internal/edwards25519/chain_export.go
new file mode 100644 (file)
index 0000000..da88750
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/internal/edwards25519/chain_export.go
@@ -0,0 +1,6 @@
+package edwards25519
+
+var (
+       GeAdd = geAdd
+       GeSub = geSub
+)

diff --git a/vendor/github.com/bytom/crypto/ed25519/internal/edwards25519/const.go b/vendor/github.com/bytom/crypto/ed25519/internal/edwards25519/const.go
new file mode 100644 (file)
index 0000000..a098563
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/internal/edwards25519/const.go
@@ -0,0 +1,1418 @@
+package edwards25519
+
+// These values are from the public domain, “ref10” implementation of ed25519
+// from SUPERCOP.
+
+// d is a constant in the Edwards curve equation.
+var d = FieldElement{
+       -10913610, 13857413, -15372611, 6949391, 114729, -8787816, -6275908, -3247719, -18696448, -12055116,
+}
+
+// d2 is 2*d.
+var d2 = FieldElement{
+       -21827239, -5839606, -30745221, 13898782, 229458, 15978800, -12551817, -6495438, 29715968, 9444199,
+}
+
+// SqrtM1 is the square-root of -1 in the field.
+var SqrtM1 = FieldElement{
+       -32595792, -7943725, 9377950, 3500415, 12389472, -272473, -25146209, -2005654, 326686, 11406482,
+}
+
+// A is a constant in the Montgomery-form of curve25519.
+var A = FieldElement{
+       486662, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+}
+
+// bi contains precomputed multiples of the base-point. See the Ed25519 paper
+// for a discussion about how these values are used.
+var bi = [8]PreComputedGroupElement{
+       {
+               FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605},
+               FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378},
+               FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546},
+       },
+       {
+               FieldElement{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024},
+               FieldElement{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574},
+               FieldElement{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357},
+       },
+       {
+               FieldElement{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380},
+               FieldElement{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306},
+               FieldElement{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942},
+       },
+       {
+               FieldElement{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766},
+               FieldElement{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701},
+               FieldElement{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300},
+       },
+       {
+               FieldElement{-22518993, -6692182, 14201702, -8745502, -23510406, 8844726, 18474211, -1361450, -13062696, 13821877},
+               FieldElement{-6455177, -7839871, 3374702, -4740862, -27098617, -10571707, 31655028, -7212327, 18853322, -14220951},
+               FieldElement{4566830, -12963868, -28974889, -12240689, -7602672, -2830569, -8514358, -10431137, 2207753, -3209784},
+       },
+       {
+               FieldElement{-25154831, -4185821, 29681144, 7868801, -6854661, -9423865, -12437364, -663000, -31111463, -16132436},
+               FieldElement{25576264, -2703214, 7349804, -11814844, 16472782, 9300885, 3844789, 15725684, 171356, 6466918},
+               FieldElement{23103977, 13316479, 9739013, -16149481, 817875, -15038942, 8965339, -14088058, -30714912, 16193877},
+       },
+       {
+               FieldElement{-33521811, 3180713, -2394130, 14003687, -16903474, -16270840, 17238398, 4729455, -18074513, 9256800},
+               FieldElement{-25182317, -4174131, 32336398, 5036987, -21236817, 11360617, 22616405, 9761698, -19827198, 630305},
+               FieldElement{-13720693, 2639453, -24237460, -7406481, 9494427, -5774029, -6554551, -15960994, -2449256, -14291300},
+       },
+       {
+               FieldElement{-3151181, -5046075, 9282714, 6866145, -31907062, -863023, -18940575, 15033784, 25105118, -7894876},
+               FieldElement{-24326370, 15950226, -31801215, -14592823, -11662737, -5090925, 1573892, -2625887, 2198790, -15804619},
+               FieldElement{-3099351, 10324967, -2241613, 7453183, -5446979, -2735503, -13812022, -16236442, -32461234, -12290683},
+       },
+}
+
+// base contains precomputed multiples of the base-point. See the Ed25519 paper
+// for a discussion about how these values are used.
+var base = [32][8]PreComputedGroupElement{
+       {
+               {
+                       FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605},
+                       FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378},
+                       FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546},
+               },
+               {
+                       FieldElement{-12815894, -12976347, -21581243, 11784320, -25355658, -2750717, -11717903, -3814571, -358445, -10211303},
+                       FieldElement{-21703237, 6903825, 27185491, 6451973, -29577724, -9554005, -15616551, 11189268, -26829678, -5319081},
+                       FieldElement{26966642, 11152617, 32442495, 15396054, 14353839, -12752335, -3128826, -9541118, -15472047, -4166697},
+               },
+               {
+                       FieldElement{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024},
+                       FieldElement{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574},
+                       FieldElement{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357},
+               },
+               {
+                       FieldElement{-17036878, 13921892, 10945806, -6033431, 27105052, -16084379, -28926210, 15006023, 3284568, -6276540},
+                       FieldElement{23599295, -8306047, -11193664, -7687416, 13236774, 10506355, 7464579, 9656445, 13059162, 10374397},
+                       FieldElement{7798556, 16710257, 3033922, 2874086, 28997861, 2835604, 32406664, -3839045, -641708, -101325},
+               },
+               {
+                       FieldElement{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380},
+                       FieldElement{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306},
+                       FieldElement{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942},
+               },
+               {
+                       FieldElement{-15371964, -12862754, 32573250, 4720197, -26436522, 5875511, -19188627, -15224819, -9818940, -12085777},
+                       FieldElement{-8549212, 109983, 15149363, 2178705, 22900618, 4543417, 3044240, -15689887, 1762328, 14866737},
+                       FieldElement{-18199695, -15951423, -10473290, 1707278, -17185920, 3916101, -28236412, 3959421, 27914454, 4383652},
+               },
+               {
+                       FieldElement{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766},
+                       FieldElement{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701},
+                       FieldElement{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300},
+               },
+               {
+                       FieldElement{14499471, -2729599, -33191113, -4254652, 28494862, 14271267, 30290735, 10876454, -33154098, 2381726},
+                       FieldElement{-7195431, -2655363, -14730155, 462251, -27724326, 3941372, -6236617, 3696005, -32300832, 15351955},
+                       FieldElement{27431194, 8222322, 16448760, -3907995, -18707002, 11938355, -32961401, -2970515, 29551813, 10109425},
+               },
+       },
+       {
+               {
+                       FieldElement{-13657040, -13155431, -31283750, 11777098, 21447386, 6519384, -2378284, -1627556, 10092783, -4764171},
+                       FieldElement{27939166, 14210322, 4677035, 16277044, -22964462, -12398139, -32508754, 12005538, -17810127, 12803510},
+                       FieldElement{17228999, -15661624, -1233527, 300140, -1224870, -11714777, 30364213, -9038194, 18016357, 4397660},
+               },
+               {
+                       FieldElement{-10958843, -7690207, 4776341, -14954238, 27850028, -15602212, -26619106, 14544525, -17477504, 982639},
+                       FieldElement{29253598, 15796703, -2863982, -9908884, 10057023, 3163536, 7332899, -4120128, -21047696, 9934963},
+                       FieldElement{5793303, 16271923, -24131614, -10116404, 29188560, 1206517, -14747930, 4559895, -30123922, -10897950},
+               },
+               {
+                       FieldElement{-27643952, -11493006, 16282657, -11036493, 28414021, -15012264, 24191034, 4541697, -13338309, 5500568},
+                       FieldElement{12650548, -1497113, 9052871, 11355358, -17680037, -8400164, -17430592, 12264343, 10874051, 13524335},
+                       FieldElement{25556948, -3045990, 714651, 2510400, 23394682, -10415330, 33119038, 5080568, -22528059, 5376628},
+               },
+               {
+                       FieldElement{-26088264, -4011052, -17013699, -3537628, -6726793, 1920897, -22321305, -9447443, 4535768, 1569007},
+                       FieldElement{-2255422, 14606630, -21692440, -8039818, 28430649, 8775819, -30494562, 3044290, 31848280, 12543772},
+                       FieldElement{-22028579, 2943893, -31857513, 6777306, 13784462, -4292203, -27377195, -2062731, 7718482, 14474653},
+               },
+               {
+                       FieldElement{2385315, 2454213, -22631320, 46603, -4437935, -15680415, 656965, -7236665, 24316168, -5253567},
+                       FieldElement{13741529, 10911568, -33233417, -8603737, -20177830, -1033297, 33040651, -13424532, -20729456, 8321686},
+                       FieldElement{21060490, -2212744, 15712757, -4336099, 1639040, 10656336, 23845965, -11874838, -9984458, 608372},
+               },
+               {
+                       FieldElement{-13672732, -15087586, -10889693, -7557059, -6036909, 11305547, 1123968, -6780577, 27229399, 23887},
+                       FieldElement{-23244140, -294205, -11744728, 14712571, -29465699, -2029617, 12797024, -6440308, -1633405, 16678954},
+                       FieldElement{-29500620, 4770662, -16054387, 14001338, 7830047, 9564805, -1508144, -4795045, -17169265, 4904953},
+               },
+               {
+                       FieldElement{24059557, 14617003, 19037157, -15039908, 19766093, -14906429, 5169211, 16191880, 2128236, -4326833},
+                       FieldElement{-16981152, 4124966, -8540610, -10653797, 30336522, -14105247, -29806336, 916033, -6882542, -2986532},
+                       FieldElement{-22630907, 12419372, -7134229, -7473371, -16478904, 16739175, 285431, 2763829, 15736322, 4143876},
+               },
+               {
+                       FieldElement{2379352, 11839345, -4110402, -5988665, 11274298, 794957, 212801, -14594663, 23527084, -16458268},
+                       FieldElement{33431127, -11130478, -17838966, -15626900, 8909499, 8376530, -32625340, 4087881, -15188911, -14416214},
+                       FieldElement{1767683, 7197987, -13205226, -2022635, -13091350, 448826, 5799055, 4357868, -4774191, -16323038},
+               },
+       },
+       {
+               {
+                       FieldElement{6721966, 13833823, -23523388, -1551314, 26354293, -11863321, 23365147, -3949732, 7390890, 2759800},
+                       FieldElement{4409041, 2052381, 23373853, 10530217, 7676779, -12885954, 21302353, -4264057, 1244380, -12919645},
+                       FieldElement{-4421239, 7169619, 4982368, -2957590, 30256825, -2777540, 14086413, 9208236, 15886429, 16489664},
+               },
+               {
+                       FieldElement{1996075, 10375649, 14346367, 13311202, -6874135, -16438411, -13693198, 398369, -30606455, -712933},
+                       FieldElement{-25307465, 9795880, -2777414, 14878809, -33531835, 14780363, 13348553, 12076947, -30836462, 5113182},
+                       FieldElement{-17770784, 11797796, 31950843, 13929123, -25888302, 12288344, -30341101, -7336386, 13847711, 5387222},
+               },
+               {
+                       FieldElement{-18582163, -3416217, 17824843, -2340966, 22744343, -10442611, 8763061, 3617786, -19600662, 10370991},
+                       FieldElement{20246567, -14369378, 22358229, -543712, 18507283, -10413996, 14554437, -8746092, 32232924, 16763880},
+                       FieldElement{9648505, 10094563, 26416693, 14745928, -30374318, -6472621, 11094161, 15689506, 3140038, -16510092},
+               },
+               {
+                       FieldElement{-16160072, 5472695, 31895588, 4744994, 8823515, 10365685, -27224800, 9448613, -28774454, 366295},
+                       FieldElement{19153450, 11523972, -11096490, -6503142, -24647631, 5420647, 28344573, 8041113, 719605, 11671788},
+                       FieldElement{8678025, 2694440, -6808014, 2517372, 4964326, 11152271, -15432916, -15266516, 27000813, -10195553},
+               },
+               {
+                       FieldElement{-15157904, 7134312, 8639287, -2814877, -7235688, 10421742, 564065, 5336097, 6750977, -14521026},
+                       FieldElement{11836410, -3979488, 26297894, 16080799, 23455045, 15735944, 1695823, -8819122, 8169720, 16220347},
+                       FieldElement{-18115838, 8653647, 17578566, -6092619, -8025777, -16012763, -11144307, -2627664, -5990708, -14166033},
+               },
+               {
+                       FieldElement{-23308498, -10968312, 15213228, -10081214, -30853605, -11050004, 27884329, 2847284, 2655861, 1738395},
+                       FieldElement{-27537433, -14253021, -25336301, -8002780, -9370762, 8129821, 21651608, -3239336, -19087449, -11005278},
+                       FieldElement{1533110, 3437855, 23735889, 459276, 29970501, 11335377, 26030092, 5821408, 10478196, 8544890},
+               },
+               {
+                       FieldElement{32173121, -16129311, 24896207, 3921497, 22579056, -3410854, 19270449, 12217473, 17789017, -3395995},
+                       FieldElement{-30552961, -2228401, -15578829, -10147201, 13243889, 517024, 15479401, -3853233, 30460520, 1052596},
+                       FieldElement{-11614875, 13323618, 32618793, 8175907, -15230173, 12596687, 27491595, -4612359, 3179268, -9478891},
+               },
+               {
+                       FieldElement{31947069, -14366651, -4640583, -15339921, -15125977, -6039709, -14756777, -16411740, 19072640, -9511060},
+                       FieldElement{11685058, 11822410, 3158003, -13952594, 33402194, -4165066, 5977896, -5215017, 473099, 5040608},
+                       FieldElement{-20290863, 8198642, -27410132, 11602123, 1290375, -2799760, 28326862, 1721092, -19558642, -3131606},
+               },
+       },
+       {
+               {
+                       FieldElement{7881532, 10687937, 7578723, 7738378, -18951012, -2553952, 21820786, 8076149, -27868496, 11538389},
+                       FieldElement{-19935666, 3899861, 18283497, -6801568, -15728660, -11249211, 8754525, 7446702, -5676054, 5797016},
+                       FieldElement{-11295600, -3793569, -15782110, -7964573, 12708869, -8456199, 2014099, -9050574, -2369172, -5877341},
+               },
+               {
+                       FieldElement{-22472376, -11568741, -27682020, 1146375, 18956691, 16640559, 1192730, -3714199, 15123619, 10811505},
+                       FieldElement{14352098, -3419715, -18942044, 10822655, 32750596, 4699007, -70363, 15776356, -28886779, -11974553},
+                       FieldElement{-28241164, -8072475, -4978962, -5315317, 29416931, 1847569, -20654173, -16484855, 4714547, -9600655},
+               },
+               {
+                       FieldElement{15200332, 8368572, 19679101, 15970074, -31872674, 1959451, 24611599, -4543832, -11745876, 12340220},
+                       FieldElement{12876937, -10480056, 33134381, 6590940, -6307776, 14872440, 9613953, 8241152, 15370987, 9608631},
+                       FieldElement{-4143277, -12014408, 8446281, -391603, 4407738, 13629032, -7724868, 15866074, -28210621, -8814099},
+               },
+               {
+                       FieldElement{26660628, -15677655, 8393734, 358047, -7401291, 992988, -23904233, 858697, 20571223, 8420556},
+                       FieldElement{14620715, 13067227, -15447274, 8264467, 14106269, 15080814, 33531827, 12516406, -21574435, -12476749},
+                       FieldElement{236881, 10476226, 57258, -14677024, 6472998, 2466984, 17258519, 7256740, 8791136, 15069930},
+               },
+               {
+                       FieldElement{1276410, -9371918, 22949635, -16322807, -23493039, -5702186, 14711875, 4874229, -30663140, -2331391},
+                       FieldElement{5855666, 4990204, -13711848, 7294284, -7804282, 1924647, -1423175, -7912378, -33069337, 9234253},
+                       FieldElement{20590503, -9018988, 31529744, -7352666, -2706834, 10650548, 31559055, -11609587, 18979186, 13396066},
+               },
+               {
+                       FieldElement{24474287, 4968103, 22267082, 4407354, 24063882, -8325180, -18816887, 13594782, 33514650, 7021958},
+                       FieldElement{-11566906, -6565505, -21365085, 15928892, -26158305, 4315421, -25948728, -3916677, -21480480, 12868082},
+                       FieldElement{-28635013, 13504661, 19988037, -2132761, 21078225, 6443208, -21446107, 2244500, -12455797, -8089383},
+               },
+               {
+                       FieldElement{-30595528, 13793479, -5852820, 319136, -25723172, -6263899, 33086546, 8957937, -15233648, 5540521},
+                       FieldElement{-11630176, -11503902, -8119500, -7643073, 2620056, 1022908, -23710744, -1568984, -16128528, -14962807},
+                       FieldElement{23152971, 775386, 27395463, 14006635, -9701118, 4649512, 1689819, 892185, -11513277, -15205948},
+               },
+               {
+                       FieldElement{9770129, 9586738, 26496094, 4324120, 1556511, -3550024, 27453819, 4763127, -19179614, 5867134},
+                       FieldElement{-32765025, 1927590, 31726409, -4753295, 23962434, -16019500, 27846559, 5931263, -29749703, -16108455},
+                       FieldElement{27461885, -2977536, 22380810, 1815854, -23033753, -3031938, 7283490, -15148073, -19526700, 7734629},
+               },
+       },
+       {
+               {
+                       FieldElement{-8010264, -9590817, -11120403, 6196038, 29344158, -13430885, 7585295, -3176626, 18549497, 15302069},
+                       FieldElement{-32658337, -6171222, -7672793, -11051681, 6258878, 13504381, 10458790, -6418461, -8872242, 8424746},
+                       FieldElement{24687205, 8613276, -30667046, -3233545, 1863892, -1830544, 19206234, 7134917, -11284482, -828919},
+               },
+               {
+                       FieldElement{11334899, -9218022, 8025293, 12707519, 17523892, -10476071, 10243738, -14685461, -5066034, 16498837},
+                       FieldElement{8911542, 6887158, -9584260, -6958590, 11145641, -9543680, 17303925, -14124238, 6536641, 10543906},
+                       FieldElement{-28946384, 15479763, -17466835, 568876, -1497683, 11223454, -2669190, -16625574, -27235709, 8876771},
+               },
+               {
+                       FieldElement{-25742899, -12566864, -15649966, -846607, -33026686, -796288, -33481822, 15824474, -604426, -9039817},
+                       FieldElement{10330056, 70051, 7957388, -9002667, 9764902, 15609756, 27698697, -4890037, 1657394, 3084098},
+                       FieldElement{10477963, -7470260, 12119566, -13250805, 29016247, -5365589, 31280319, 14396151, -30233575, 15272409},
+               },
+               {
+                       FieldElement{-12288309, 3169463, 28813183, 16658753, 25116432, -5630466, -25173957, -12636138, -25014757, 1950504},
+                       FieldElement{-26180358, 9489187, 11053416, -14746161, -31053720, 5825630, -8384306, -8767532, 15341279, 8373727},
+                       FieldElement{28685821, 7759505, -14378516, -12002860, -31971820, 4079242, 298136, -10232602, -2878207, 15190420},
+               },
+               {
+                       FieldElement{-32932876, 13806336, -14337485, -15794431, -24004620, 10940928, 8669718, 2742393, -26033313, -6875003},
+                       FieldElement{-1580388, -11729417, -25979658, -11445023, -17411874, -10912854, 9291594, -16247779, -12154742, 6048605},
+                       FieldElement{-30305315, 14843444, 1539301, 11864366, 20201677, 1900163, 13934231, 5128323, 11213262, 9168384},
+               },
+               {
+                       FieldElement{-26280513, 11007847, 19408960, -940758, -18592965, -4328580, -5088060, -11105150, 20470157, -16398701},
+                       FieldElement{-23136053, 9282192, 14855179, -15390078, -7362815, -14408560, -22783952, 14461608, 14042978, 5230683},
+                       FieldElement{29969567, -2741594, -16711867, -8552442, 9175486, -2468974, 21556951, 3506042, -5933891, -12449708},
+               },
+               {
+                       FieldElement{-3144746, 8744661, 19704003, 4581278, -20430686, 6830683, -21284170, 8971513, -28539189, 15326563},
+                       FieldElement{-19464629, 10110288, -17262528, -3503892, -23500387, 1355669, -15523050, 15300988, -20514118, 9168260},
+                       FieldElement{-5353335, 4488613, -23803248, 16314347, 7780487, -15638939, -28948358, 9601605, 33087103, -9011387},
+               },
+               {
+                       FieldElement{-19443170, -15512900, -20797467, -12445323, -29824447, 10229461, -27444329, -15000531, -5996870, 15664672},
+                       FieldElement{23294591, -16632613, -22650781, -8470978, 27844204, 11461195, 13099750, -2460356, 18151676, 13417686},
+                       FieldElement{-24722913, -4176517, -31150679, 5988919, -26858785, 6685065, 1661597, -12551441, 15271676, -15452665},
+               },
+       },
+       {
+               {
+                       FieldElement{11433042, -13228665, 8239631, -5279517, -1985436, -725718, -18698764, 2167544, -6921301, -13440182},
+                       FieldElement{-31436171, 15575146, 30436815, 12192228, -22463353, 9395379, -9917708, -8638997, 12215110, 12028277},
+                       FieldElement{14098400, 6555944, 23007258, 5757252, -15427832, -12950502, 30123440, 4617780, -16900089, -655628},
+               },
+               {
+                       FieldElement{-4026201, -15240835, 11893168, 13718664, -14809462, 1847385, -15819999, 10154009, 23973261, -12684474},
+                       FieldElement{-26531820, -3695990, -1908898, 2534301, -31870557, -16550355, 18341390, -11419951, 32013174, -10103539},
+                       FieldElement{-25479301, 10876443, -11771086, -14625140, -12369567, 1838104, 21911214, 6354752, 4425632, -837822},
+               },
+               {
+                       FieldElement{-10433389, -14612966, 22229858, -3091047, -13191166, 776729, -17415375, -12020462, 4725005, 14044970},
+                       FieldElement{19268650, -7304421, 1555349, 8692754, -21474059, -9910664, 6347390, -1411784, -19522291, -16109756},
+                       FieldElement{-24864089, 12986008, -10898878, -5558584, -11312371, -148526, 19541418, 8180106, 9282262, 10282508},
+               },
+               {
+                       FieldElement{-26205082, 4428547, -8661196, -13194263, 4098402, -14165257, 15522535, 8372215, 5542595, -10702683},
+                       FieldElement{-10562541, 14895633, 26814552, -16673850, -17480754, -2489360, -2781891, 6993761, -18093885, 10114655},
+                       FieldElement{-20107055, -929418, 31422704, 10427861, -7110749, 6150669, -29091755, -11529146, 25953725, -106158},
+               },
+               {
+                       FieldElement{-4234397, -8039292, -9119125, 3046000, 2101609, -12607294, 19390020, 6094296, -3315279, 12831125},
+                       FieldElement{-15998678, 7578152, 5310217, 14408357, -33548620, -224739, 31575954, 6326196, 7381791, -2421839},
+                       FieldElement{-20902779, 3296811, 24736065, -16328389, 18374254, 7318640, 6295303, 8082724, -15362489, 12339664},
+               },
+               {
+                       FieldElement{27724736, 2291157, 6088201, -14184798, 1792727, 5857634, 13848414, 15768922, 25091167, 14856294},
+                       FieldElement{-18866652, 8331043, 24373479, 8541013, -701998, -9269457, 12927300, -12695493, -22182473, -9012899},
+                       FieldElement{-11423429, -5421590, 11632845, 3405020, 30536730, -11674039, -27260765, 13866390, 30146206, 9142070},
+               },
+               {
+                       FieldElement{3924129, -15307516, -13817122, -10054960, 12291820, -668366, -27702774, 9326384, -8237858, 4171294},
+                       FieldElement{-15921940, 16037937, 6713787, 16606682, -21612135, 2790944, 26396185, 3731949, 345228, -5462949},
+                       FieldElement{-21327538, 13448259, 25284571, 1143661, 20614966, -8849387, 2031539, -12391231, -16253183, -13582083},
+               },
+               {
+                       FieldElement{31016211, -16722429, 26371392, -14451233, -5027349, 14854137, 17477601, 3842657, 28012650, -16405420},
+                       FieldElement{-5075835, 9368966, -8562079, -4600902, -15249953, 6970560, -9189873, 16292057, -8867157, 3507940},
+                       FieldElement{29439664, 3537914, 23333589, 6997794, -17555561, -11018068, -15209202, -15051267, -9164929, 6580396},
+               },
+       },
+       {
+               {
+                       FieldElement{-12185861, -7679788, 16438269, 10826160, -8696817, -6235611, 17860444, -9273846, -2095802, 9304567},
+                       FieldElement{20714564, -4336911, 29088195, 7406487, 11426967, -5095705, 14792667, -14608617, 5289421, -477127},
+                       FieldElement{-16665533, -10650790, -6160345, -13305760, 9192020, -1802462, 17271490, 12349094, 26939669, -3752294},
+               },
+               {
+                       FieldElement{-12889898, 9373458, 31595848, 16374215, 21471720, 13221525, -27283495, -12348559, -3698806, 117887},
+                       FieldElement{22263325, -6560050, 3984570, -11174646, -15114008, -566785, 28311253, 5358056, -23319780, 541964},
+                       FieldElement{16259219, 3261970, 2309254, -15534474, -16885711, -4581916, 24134070, -16705829, -13337066, -13552195},
+               },
+               {
+                       FieldElement{9378160, -13140186, -22845982, -12745264, 28198281, -7244098, -2399684, -717351, 690426, 14876244},
+                       FieldElement{24977353, -314384, -8223969, -13465086, 28432343, -1176353, -13068804, -12297348, -22380984, 6618999},
+                       FieldElement{-1538174, 11685646, 12944378, 13682314, -24389511, -14413193, 8044829, -13817328, 32239829, -5652762},
+               },
+               {
+                       FieldElement{-18603066, 4762990, -926250, 8885304, -28412480, -3187315, 9781647, -10350059, 32779359, 5095274},
+                       FieldElement{-33008130, -5214506, -32264887, -3685216, 9460461, -9327423, -24601656, 14506724, 21639561, -2630236},
+                       FieldElement{-16400943, -13112215, 25239338, 15531969, 3987758, -4499318, -1289502, -6863535, 17874574, 558605},
+               },
+               {
+                       FieldElement{-13600129, 10240081, 9171883, 16131053, -20869254, 9599700, 33499487, 5080151, 2085892, 5119761},
+                       FieldElement{-22205145, -2519528, -16381601, 414691, -25019550, 2170430, 30634760, -8363614, -31999993, -5759884},
+                       FieldElement{-6845704, 15791202, 8550074, -1312654, 29928809, -12092256, 27534430, -7192145, -22351378, 12961482},
+               },
+               {
+                       FieldElement{-24492060, -9570771, 10368194, 11582341, -23397293, -2245287, 16533930, 8206996, -30194652, -5159638},
+                       FieldElement{-11121496, -3382234, 2307366, 6362031, -135455, 8868177, -16835630, 7031275, 7589640, 8945490},
+                       FieldElement{-32152748, 8917967, 6661220, -11677616, -1192060, -15793393, 7251489, -11182180, 24099109, -14456170},
+               },
+               {
+                       FieldElement{5019558, -7907470, 4244127, -14714356, -26933272, 6453165, -19118182, -13289025, -6231896, -10280736},
+                       FieldElement{10853594, 10721687, 26480089, 5861829, -22995819, 1972175, -1866647, -10557898, -3363451, -6441124},
+                       FieldElement{-17002408, 5906790, 221599, -6563147, 7828208, -13248918, 24362661, -2008168, -13866408, 7421392},
+               },
+               {
+                       FieldElement{8139927, -6546497, 32257646, -5890546, 30375719, 1886181, -21175108, 15441252, 28826358, -4123029},
+                       FieldElement{6267086, 9695052, 7709135, -16603597, -32869068, -1886135, 14795160, -7840124, 13746021, -1742048},
+                       FieldElement{28584902, 7787108, -6732942, -15050729, 22846041, -7571236, -3181936, -363524, 4771362, -8419958},
+               },
+       },
+       {
+               {
+                       FieldElement{24949256, 6376279, -27466481, -8174608, -18646154, -9930606, 33543569, -12141695, 3569627, 11342593},
+                       FieldElement{26514989, 4740088, 27912651, 3697550, 19331575, -11472339, 6809886, 4608608, 7325975, -14801071},
+                       FieldElement{-11618399, -14554430, -24321212, 7655128, -1369274, 5214312, -27400540, 10258390, -17646694, -8186692},
+               },
+               {
+                       FieldElement{11431204, 15823007, 26570245, 14329124, 18029990, 4796082, -31446179, 15580664, 9280358, -3973687},
+                       FieldElement{-160783, -10326257, -22855316, -4304997, -20861367, -13621002, -32810901, -11181622, -15545091, 4387441},
+                       FieldElement{-20799378, 12194512, 3937617, -5805892, -27154820, 9340370, -24513992, 8548137, 20617071, -7482001},
+               },
+               {
+                       FieldElement{-938825, -3930586, -8714311, 16124718, 24603125, -6225393, -13775352, -11875822, 24345683, 10325460},
+                       FieldElement{-19855277, -1568885, -22202708, 8714034, 14007766, 6928528, 16318175, -1010689, 4766743, 3552007},
+                       FieldElement{-21751364, -16730916, 1351763, -803421, -4009670, 3950935, 3217514, 14481909, 10988822, -3994762},
+               },
+               {
+                       FieldElement{15564307, -14311570, 3101243, 5684148, 30446780, -8051356, 12677127, -6505343, -8295852, 13296005},
+                       FieldElement{-9442290, 6624296, -30298964, -11913677, -4670981, -2057379, 31521204, 9614054, -30000824, 12074674},
+                       FieldElement{4771191, -135239, 14290749, -13089852, 27992298, 14998318, -1413936, -1556716, 29832613, -16391035},
+               },
+               {
+                       FieldElement{7064884, -7541174, -19161962, -5067537, -18891269, -2912736, 25825242, 5293297, -27122660, 13101590},
+                       FieldElement{-2298563, 2439670, -7466610, 1719965, -27267541, -16328445, 32512469, -5317593, -30356070, -4190957},
+                       FieldElement{-30006540, 10162316, -33180176, 3981723, -16482138, -13070044, 14413974, 9515896, 19568978, 9628812},
+               },
+               {
+                       FieldElement{33053803, 199357, 15894591, 1583059, 27380243, -4580435, -17838894, -6106839, -6291786, 3437740},
+                       FieldElement{-18978877, 3884493, 19469877, 12726490, 15913552, 13614290, -22961733, 70104, 7463304, 4176122},
+                       FieldElement{-27124001, 10659917, 11482427, -16070381, 12771467, -6635117, -32719404, -5322751, 24216882, 5944158},
+               },
+               {
+                       FieldElement{8894125, 7450974, -2664149, -9765752, -28080517, -12389115, 19345746, 14680796, 11632993, 5847885},
+                       FieldElement{26942781, -2315317, 9129564, -4906607, 26024105, 11769399, -11518837, 6367194, -9727230, 4782140},
+                       FieldElement{19916461, -4828410, -22910704, -11414391, 25606324, -5972441, 33253853, 8220911, 6358847, -1873857},
+               },
+               {
+                       FieldElement{801428, -2081702, 16569428, 11065167, 29875704, 96627, 7908388, -4480480, -13538503, 1387155},
+                       FieldElement{19646058, 5720633, -11416706, 12814209, 11607948, 12749789, 14147075, 15156355, -21866831, 11835260},
+                       FieldElement{19299512, 1155910, 28703737, 14890794, 2925026, 7269399, 26121523, 15467869, -26560550, 5052483},
+               },
+       },
+       {
+               {
+                       FieldElement{-3017432, 10058206, 1980837, 3964243, 22160966, 12322533, -6431123, -12618185, 12228557, -7003677},
+                       FieldElement{32944382, 14922211, -22844894, 5188528, 21913450, -8719943, 4001465, 13238564, -6114803, 8653815},
+                       FieldElement{22865569, -4652735, 27603668, -12545395, 14348958, 8234005, 24808405, 5719875, 28483275, 2841751},
+               },
+               {
+                       FieldElement{-16420968, -1113305, -327719, -12107856, 21886282, -15552774, -1887966, -315658, 19932058, -12739203},
+                       FieldElement{-11656086, 10087521, -8864888, -5536143, -19278573, -3055912, 3999228, 13239134, -4777469, -13910208},
+                       FieldElement{1382174, -11694719, 17266790, 9194690, -13324356, 9720081, 20403944, 11284705, -14013818, 3093230},
+               },
+               {
+                       FieldElement{16650921, -11037932, -1064178, 1570629, -8329746, 7352753, -302424, 16271225, -24049421, -6691850},
+                       FieldElement{-21911077, -5927941, -4611316, -5560156, -31744103, -10785293, 24123614, 15193618, -21652117, -16739389},
+                       FieldElement{-9935934, -4289447, -25279823, 4372842, 2087473, 10399484, 31870908, 14690798, 17361620, 11864968},
+               },
+               {
+                       FieldElement{-11307610, 6210372, 13206574, 5806320, -29017692, -13967200, -12331205, -7486601, -25578460, -16240689},
+                       FieldElement{14668462, -12270235, 26039039, 15305210, 25515617, 4542480, 10453892, 6577524, 9145645, -6443880},
+                       FieldElement{5974874, 3053895, -9433049, -10385191, -31865124, 3225009, -7972642, 3936128, -5652273, -3050304},
+               },
+               {
+                       FieldElement{30625386, -4729400, -25555961, -12792866, -20484575, 7695099, 17097188, -16303496, -27999779, 1803632},
+                       FieldElement{-3553091, 9865099, -5228566, 4272701, -5673832, -16689700, 14911344, 12196514, -21405489, 7047412},
+                       FieldElement{20093277, 9920966, -11138194, -5343857, 13161587, 12044805, -32856851, 4124601, -32343828, -10257566},
+               },
+               {
+                       FieldElement{-20788824, 14084654, -13531713, 7842147, 19119038, -13822605, 4752377, -8714640, -21679658, 2288038},
+                       FieldElement{-26819236, -3283715, 29965059, 3039786, -14473765, 2540457, 29457502, 14625692, -24819617, 12570232},
+                       FieldElement{-1063558, -11551823, 16920318, 12494842, 1278292, -5869109, -21159943, -3498680, -11974704, 4724943},
+               },
+               {
+                       FieldElement{17960970, -11775534, -4140968, -9702530, -8876562, -1410617, -12907383, -8659932, -29576300, 1903856},
+                       FieldElement{23134274, -14279132, -10681997, -1611936, 20684485, 15770816, -12989750, 3190296, 26955097, 14109738},
+                       FieldElement{15308788, 5320727, -30113809, -14318877, 22902008, 7767164, 29425325, -11277562, 31960942, 11934971},
+               },
+               {
+                       FieldElement{-27395711, 8435796, 4109644, 12222639, -24627868, 14818669, 20638173, 4875028, 10491392, 1379718},
+                       FieldElement{-13159415, 9197841, 3875503, -8936108, -1383712, -5879801, 33518459, 16176658, 21432314, 12180697},
+                       FieldElement{-11787308, 11500838, 13787581, -13832590, -22430679, 10140205, 1465425, 12689540, -10301319, -13872883},
+               },
+       },
+       {
+               {
+                       FieldElement{5414091, -15386041, -21007664, 9643570, 12834970, 1186149, -2622916, -1342231, 26128231, 6032912},
+                       FieldElement{-26337395, -13766162, 32496025, -13653919, 17847801, -12669156, 3604025, 8316894, -25875034, -10437358},
+                       FieldElement{3296484, 6223048, 24680646, -12246460, -23052020, 5903205, -8862297, -4639164, 12376617, 3188849},
+               },
+               {
+                       FieldElement{29190488, -14659046, 27549113, -1183516, 3520066, -10697301, 32049515, -7309113, -16109234, -9852307},
+                       FieldElement{-14744486, -9309156, 735818, -598978, -20407687, -5057904, 25246078, -15795669, 18640741, -960977},
+                       FieldElement{-6928835, -16430795, 10361374, 5642961, 4910474, 12345252, -31638386, -494430, 10530747, 1053335},
+               },
+               {
+                       FieldElement{-29265967, -14186805, -13538216, -12117373, -19457059, -10655384, -31462369, -2948985, 24018831, 15026644},
+                       FieldElement{-22592535, -3145277, -2289276, 5953843, -13440189, 9425631, 25310643, 13003497, -2314791, -15145616},
+                       FieldElement{-27419985, -603321, -8043984, -1669117, -26092265, 13987819, -27297622, 187899, -23166419, -2531735},
+               },
+               {
+                       FieldElement{-21744398, -13810475, 1844840, 5021428, -10434399, -15911473, 9716667, 16266922, -5070217, 726099},
+                       FieldElement{29370922, -6053998, 7334071, -15342259, 9385287, 2247707, -13661962, -4839461, 30007388, -15823341},
+                       FieldElement{-936379, 16086691, 23751945, -543318, -1167538, -5189036, 9137109, 730663, 9835848, 4555336},
+               },
+               {
+                       FieldElement{-23376435, 1410446, -22253753, -12899614, 30867635, 15826977, 17693930, 544696, -11985298, 12422646},
+                       FieldElement{31117226, -12215734, -13502838, 6561947, -9876867, -12757670, -5118685, -4096706, 29120153, 13924425},
+                       FieldElement{-17400879, -14233209, 19675799, -2734756, -11006962, -5858820, -9383939, -11317700, 7240931, -237388},
+               },
+               {
+                       FieldElement{-31361739, -11346780, -15007447, -5856218, -22453340, -12152771, 1222336, 4389483, 3293637, -15551743},
+                       FieldElement{-16684801, -14444245, 11038544, 11054958, -13801175, -3338533, -24319580, 7733547, 12796905, -6335822},
+                       FieldElement{-8759414, -10817836, -25418864, 10783769, -30615557, -9746811, -28253339, 3647836, 3222231, -11160462},
+               },
+               {
+                       FieldElement{18606113, 1693100, -25448386, -15170272, 4112353, 10045021, 23603893, -2048234, -7550776, 2484985},
+                       FieldElement{9255317, -3131197, -12156162, -1004256, 13098013, -9214866, 16377220, -2102812, -19802075, -3034702},
+                       FieldElement{-22729289, 7496160, -5742199, 11329249, 19991973, -3347502, -31718148, 9936966, -30097688, -10618797},
+               },
+               {
+                       FieldElement{21878590, -5001297, 4338336, 13643897, -3036865, 13160960, 19708896, 5415497, -7360503, -4109293},
+                       FieldElement{27736861, 10103576, 12500508, 8502413, -3413016, -9633558, 10436918, -1550276, -23659143, -8132100},
+                       FieldElement{19492550, -12104365, -29681976, -852630, -3208171, 12403437, 30066266, 8367329, 13243957, 8709688},
+               },
+       },
+       {
+               {
+                       FieldElement{12015105, 2801261, 28198131, 10151021, 24818120, -4743133, -11194191, -5645734, 5150968, 7274186},
+                       FieldElement{2831366, -12492146, 1478975, 6122054, 23825128, -12733586, 31097299, 6083058, 31021603, -9793610},
+                       FieldElement{-2529932, -2229646, 445613, 10720828, -13849527, -11505937, -23507731, 16354465, 15067285, -14147707},
+               },
+               {
+                       FieldElement{7840942, 14037873, -33364863, 15934016, -728213, -3642706, 21403988, 1057586, -19379462, -12403220},
+                       FieldElement{915865, -16469274, 15608285, -8789130, -24357026, 6060030, -17371319, 8410997, -7220461, 16527025},
+                       FieldElement{32922597, -556987, 20336074, -16184568, 10903705, -5384487, 16957574, 52992, 23834301, 6588044},
+               },
+               {
+                       FieldElement{32752030, 11232950, 3381995, -8714866, 22652988, -10744103, 17159699, 16689107, -20314580, -1305992},
+                       FieldElement{-4689649, 9166776, -25710296, -10847306, 11576752, 12733943, 7924251, -2752281, 1976123, -7249027},
+                       FieldElement{21251222, 16309901, -2983015, -6783122, 30810597, 12967303, 156041, -3371252, 12331345, -8237197},
+               },
+               {
+                       FieldElement{8651614, -4477032, -16085636, -4996994, 13002507, 2950805, 29054427, -5106970, 10008136, -4667901},
+                       FieldElement{31486080, 15114593, -14261250, 12951354, 14369431, -7387845, 16347321, -13662089, 8684155, -10532952},
+                       FieldElement{19443825, 11385320, 24468943, -9659068, -23919258, 2187569, -26263207, -6086921, 31316348, 14219878},
+               },
+               {
+                       FieldElement{-28594490, 1193785, 32245219, 11392485, 31092169, 15722801, 27146014, 6992409, 29126555, 9207390},
+                       FieldElement{32382935, 1110093, 18477781, 11028262, -27411763, -7548111, -4980517, 10843782, -7957600, -14435730},
+                       FieldElement{2814918, 7836403, 27519878, -7868156, -20894015, -11553689, -21494559, 8550130, 28346258, 1994730},
+               },
+               {
+                       FieldElement{-19578299, 8085545, -14000519, -3948622, 2785838, -16231307, -19516951, 7174894, 22628102, 8115180},
+                       FieldElement{-30405132, 955511, -11133838, -15078069, -32447087, -13278079, -25651578, 3317160, -9943017, 930272},
+                       FieldElement{-15303681, -6833769, 28856490, 1357446, 23421993, 1057177, 24091212, -1388970, -22765376, -10650715},
+               },
+               {
+                       FieldElement{-22751231, -5303997, -12907607, -12768866, -15811511, -7797053, -14839018, -16554220, -1867018, 8398970},
+                       FieldElement{-31969310, 2106403, -4736360, 1362501, 12813763, 16200670, 22981545, -6291273, 18009408, -15772772},
+                       FieldElement{-17220923, -9545221, -27784654, 14166835, 29815394, 7444469, 29551787, -3727419, 19288549, 1325865},
+               },
+               {
+                       FieldElement{15100157, -15835752, -23923978, -1005098, -26450192, 15509408, 12376730, -3479146, 33166107, -8042750},
+                       FieldElement{20909231, 13023121, -9209752, 16251778, -5778415, -8094914, 12412151, 10018715, 2213263, -13878373},
+                       FieldElement{32529814, -11074689, 30361439, -16689753, -9135940, 1513226, 22922121, 6382134, -5766928, 8371348},
+               },
+       },
+       {
+               {
+                       FieldElement{9923462, 11271500, 12616794, 3544722, -29998368, -1721626, 12891687, -8193132, -26442943, 10486144},
+                       FieldElement{-22597207, -7012665, 8587003, -8257861, 4084309, -12970062, 361726, 2610596, -23921530, -11455195},
+                       FieldElement{5408411, -1136691, -4969122, 10561668, 24145918, 14240566, 31319731, -4235541, 19985175, -3436086},
+               },
+               {
+                       FieldElement{-13994457, 16616821, 14549246, 3341099, 32155958, 13648976, -17577068, 8849297, 65030, 8370684},
+                       FieldElement{-8320926, -12049626, 31204563, 5839400, -20627288, -1057277, -19442942, 6922164, 12743482, -9800518},
+                       FieldElement{-2361371, 12678785, 28815050, 4759974, -23893047, 4884717, 23783145, 11038569, 18800704, 255233},
+               },
+               {
+                       FieldElement{-5269658, -1773886, 13957886, 7990715, 23132995, 728773, 13393847, 9066957, 19258688, -14753793},
+                       FieldElement{-2936654, -10827535, -10432089, 14516793, -3640786, 4372541, -31934921, 2209390, -1524053, 2055794},
+                       FieldElement{580882, 16705327, 5468415, -2683018, -30926419, -14696000, -7203346, -8994389, -30021019, 7394435},
+               },
+               {
+                       FieldElement{23838809, 1822728, -15738443, 15242727, 8318092, -3733104, -21672180, -3492205, -4821741, 14799921},
+                       FieldElement{13345610, 9759151, 3371034, -16137791, 16353039, 8577942, 31129804, 13496856, -9056018, 7402518},
+                       FieldElement{2286874, -4435931, -20042458, -2008336, -13696227, 5038122, 11006906, -15760352, 8205061, 1607563},
+               },
+               {
+                       FieldElement{14414086, -8002132, 3331830, -3208217, 22249151, -5594188, 18364661, -2906958, 30019587, -9029278},
+                       FieldElement{-27688051, 1585953, -10775053, 931069, -29120221, -11002319, -14410829, 12029093, 9944378, 8024},
+                       FieldElement{4368715, -3709630, 29874200, -15022983, -20230386, -11410704, -16114594, -999085, -8142388, 5640030},
+               },
+               {
+                       FieldElement{10299610, 13746483, 11661824, 16234854, 7630238, 5998374, 9809887, -16694564, 15219798, -14327783},
+                       FieldElement{27425505, -5719081, 3055006, 10660664, 23458024, 595578, -15398605, -1173195, -18342183, 9742717},
+                       FieldElement{6744077, 2427284, 26042789, 2720740, -847906, 1118974, 32324614, 7406442, 12420155, 1994844},
+               },
+               {
+                       FieldElement{14012521, -5024720, -18384453, -9578469, -26485342, -3936439, -13033478, -10909803, 24319929, -6446333},
+                       FieldElement{16412690, -4507367, 10772641, 15929391, -17068788, -4658621, 10555945, -10484049, -30102368, -4739048},
+                       FieldElement{22397382, -7767684, -9293161, -12792868, 17166287, -9755136, -27333065, 6199366, 21880021, -12250760},
+               },
+               {
+                       FieldElement{-4283307, 5368523, -31117018, 8163389, -30323063, 3209128, 16557151, 8890729, 8840445, 4957760},
+                       FieldElement{-15447727, 709327, -6919446, -10870178, -29777922, 6522332, -21720181, 12130072, -14796503, 5005757},
+                       FieldElement{-2114751, -14308128, 23019042, 15765735, -25269683, 6002752, 10183197, -13239326, -16395286, -2176112},
+               },
+       },
+       {
+               {
+                       FieldElement{-19025756, 1632005, 13466291, -7995100, -23640451, 16573537, -32013908, -3057104, 22208662, 2000468},
+                       FieldElement{3065073, -1412761, -25598674, -361432, -17683065, -5703415, -8164212, 11248527, -3691214, -7414184},
+                       FieldElement{10379208, -6045554, 8877319, 1473647, -29291284, -12507580, 16690915, 2553332, -3132688, 16400289},
+               },
+               {
+                       FieldElement{15716668, 1254266, -18472690, 7446274, -8448918, 6344164, -22097271, -7285580, 26894937, 9132066},
+                       FieldElement{24158887, 12938817, 11085297, -8177598, -28063478, -4457083, -30576463, 64452, -6817084, -2692882},
+                       FieldElement{13488534, 7794716, 22236231, 5989356, 25426474, -12578208, 2350710, -3418511, -4688006, 2364226},
+               },
+               {
+                       FieldElement{16335052, 9132434, 25640582, 6678888, 1725628, 8517937, -11807024, -11697457, 15445875, -7798101},
+                       FieldElement{29004207, -7867081, 28661402, -640412, -12794003, -7943086, 31863255, -4135540, -278050, -15759279},
+                       FieldElement{-6122061, -14866665, -28614905, 14569919, -10857999, -3591829, 10343412, -6976290, -29828287, -10815811},
+               },
+               {
+                       FieldElement{27081650, 3463984, 14099042, -4517604, 1616303, -6205604, 29542636, 15372179, 17293797, 960709},
+                       FieldElement{20263915, 11434237, -5765435, 11236810, 13505955, -10857102, -16111345, 6493122, -19384511, 7639714},
+                       FieldElement{-2830798, -14839232, 25403038, -8215196, -8317012, -16173699, 18006287, -16043750, 29994677, -15808121},
+               },
+               {
+                       FieldElement{9769828, 5202651, -24157398, -13631392, -28051003, -11561624, -24613141, -13860782, -31184575, 709464},
+                       FieldElement{12286395, 13076066, -21775189, -1176622, -25003198, 4057652, -32018128, -8890874, 16102007, 13205847},
+                       FieldElement{13733362, 5599946, 10557076, 3195751, -5557991, 8536970, -25540170, 8525972, 10151379, 10394400},
+               },
+               {
+                       FieldElement{4024660, -16137551, 22436262, 12276534, -9099015, -2686099, 19698229, 11743039, -33302334, 8934414},
+                       FieldElement{-15879800, -4525240, -8580747, -2934061, 14634845, -698278, -9449077, 3137094, -11536886, 11721158},
+                       FieldElement{17555939, -5013938, 8268606, 2331751, -22738815, 9761013, 9319229, 8835153, -9205489, -1280045},
+               },
+               {
+                       FieldElement{-461409, -7830014, 20614118, 16688288, -7514766, -4807119, 22300304, 505429, 6108462, -6183415},
+                       FieldElement{-5070281, 12367917, -30663534, 3234473, 32617080, -8422642, 29880583, -13483331, -26898490, -7867459},
+                       FieldElement{-31975283, 5726539, 26934134, 10237677, -3173717, -605053, 24199304, 3795095, 7592688, -14992079},
+               },
+               {
+                       FieldElement{21594432, -14964228, 17466408, -4077222, 32537084, 2739898, 6407723, 12018833, -28256052, 4298412},
+                       FieldElement{-20650503, -11961496, -27236275, 570498, 3767144, -1717540, 13891942, -1569194, 13717174, 10805743},
+                       FieldElement{-14676630, -15644296, 15287174, 11927123, 24177847, -8175568, -796431, 14860609, -26938930, -5863836},
+               },
+       },
+       {
+               {
+                       FieldElement{12962541, 5311799, -10060768, 11658280, 18855286, -7954201, 13286263, -12808704, -4381056, 9882022},
+                       FieldElement{18512079, 11319350, -20123124, 15090309, 18818594, 5271736, -22727904, 3666879, -23967430, -3299429},
+                       FieldElement{-6789020, -3146043, 16192429, 13241070, 15898607, -14206114, -10084880, -6661110, -2403099, 5276065},
+               },
+               {
+                       FieldElement{30169808, -5317648, 26306206, -11750859, 27814964, 7069267, 7152851, 3684982, 1449224, 13082861},
+                       FieldElement{10342826, 3098505, 2119311, 193222, 25702612, 12233820, 23697382, 15056736, -21016438, -8202000},
+                       FieldElement{-33150110, 3261608, 22745853, 7948688, 19370557, -15177665, -26171976, 6482814, -10300080, -11060101},
+               },
+               {
+                       FieldElement{32869458, -5408545, 25609743, 15678670, -10687769, -15471071, 26112421, 2521008, -22664288, 6904815},
+                       FieldElement{29506923, 4457497, 3377935, -9796444, -30510046, 12935080, 1561737, 3841096, -29003639, -6657642},
+                       FieldElement{10340844, -6630377, -18656632, -2278430, 12621151, -13339055, 30878497, -11824370, -25584551, 5181966},
+               },
+               {
+                       FieldElement{25940115, -12658025, 17324188, -10307374, -8671468, 15029094, 24396252, -16450922, -2322852, -12388574},
+                       FieldElement{-21765684, 9916823, -1300409, 4079498, -1028346, 11909559, 1782390, 12641087, 20603771, -6561742},
+                       FieldElement{-18882287, -11673380, 24849422, 11501709, 13161720, -4768874, 1925523, 11914390, 4662781, 7820689},
+               },
+               {
+                       FieldElement{12241050, -425982, 8132691, 9393934, 32846760, -1599620, 29749456, 12172924, 16136752, 15264020},
+                       FieldElement{-10349955, -14680563, -8211979, 2330220, -17662549, -14545780, 10658213, 6671822, 19012087, 3772772},
+                       FieldElement{3753511, -3421066, 10617074, 2028709, 14841030, -6721664, 28718732, -15762884, 20527771, 12988982},
+               },
+               {
+                       FieldElement{-14822485, -5797269, -3707987, 12689773, -898983, -10914866, -24183046, -10564943, 3299665, -12424953},
+                       FieldElement{-16777703, -15253301, -9642417, 4978983, 3308785, 8755439, 6943197, 6461331, -25583147, 8991218},
+                       FieldElement{-17226263, 1816362, -1673288, -6086439, 31783888, -8175991, -32948145, 7417950, -30242287, 1507265},
+               },
+               {
+                       FieldElement{29692663, 6829891, -10498800, 4334896, 20945975, -11906496, -28887608, 8209391, 14606362, -10647073},
+                       FieldElement{-3481570, 8707081, 32188102, 5672294, 22096700, 1711240, -33020695, 9761487, 4170404, -2085325},
+                       FieldElement{-11587470, 14855945, -4127778, -1531857, -26649089, 15084046, 22186522, 16002000, -14276837, -8400798},
+               },
+               {
+                       FieldElement{-4811456, 13761029, -31703877, -2483919, -3312471, 7869047, -7113572, -9620092, 13240845, 10965870},
+                       FieldElement{-7742563, -8256762, -14768334, -13656260, -23232383, 12387166, 4498947, 14147411, 29514390, 4302863},
+                       FieldElement{-13413405, -12407859, 20757302, -13801832, 14785143, 8976368, -5061276, -2144373, 17846988, -13971927},
+               },
+       },
+       {
+               {
+                       FieldElement{-2244452, -754728, -4597030, -1066309, -6247172, 1455299, -21647728, -9214789, -5222701, 12650267},
+                       FieldElement{-9906797, -16070310, 21134160, 12198166, -27064575, 708126, 387813, 13770293, -19134326, 10958663},
+                       FieldElement{22470984, 12369526, 23446014, -5441109, -21520802, -9698723, -11772496, -11574455, -25083830, 4271862},
+               },
+               {
+                       FieldElement{-25169565, -10053642, -19909332, 15361595, -5984358, 2159192, 75375, -4278529, -32526221, 8469673},
+                       FieldElement{15854970, 4148314, -8893890, 7259002, 11666551, 13824734, -30531198, 2697372, 24154791, -9460943},
+                       FieldElement{15446137, -15806644, 29759747, 14019369, 30811221, -9610191, -31582008, 12840104, 24913809, 9815020},
+               },
+               {
+                       FieldElement{-4709286, -5614269, -31841498, -12288893, -14443537, 10799414, -9103676, 13438769, 18735128, 9466238},
+                       FieldElement{11933045, 9281483, 5081055, -5183824, -2628162, -4905629, -7727821, -10896103, -22728655, 16199064},
+                       FieldElement{14576810, 379472, -26786533, -8317236, -29426508, -10812974, -102766, 1876699, 30801119, 2164795},
+               },
+               {
+                       FieldElement{15995086, 3199873, 13672555, 13712240, -19378835, -4647646, -13081610, -15496269, -13492807, 1268052},
+                       FieldElement{-10290614, -3659039, -3286592, 10948818, 23037027, 3794475, -3470338, -12600221, -17055369, 3565904},
+                       FieldElement{29210088, -9419337, -5919792, -4952785, 10834811, -13327726, -16512102, -10820713, -27162222, -14030531},
+               },
+               {
+                       FieldElement{-13161890, 15508588, 16663704, -8156150, -28349942, 9019123, -29183421, -3769423, 2244111, -14001979},
+                       FieldElement{-5152875, -3800936, -9306475, -6071583, 16243069, 14684434, -25673088, -16180800, 13491506, 4641841},
+                       FieldElement{10813417, 643330, -19188515, -728916, 30292062, -16600078, 27548447, -7721242, 14476989, -12767431},
+               },
+               {
+                       FieldElement{10292079, 9984945, 6481436, 8279905, -7251514, 7032743, 27282937, -1644259, -27912810, 12651324},
+                       FieldElement{-31185513, -813383, 22271204, 11835308, 10201545, 15351028, 17099662, 3988035, 21721536, -3148940},
+                       FieldElement{10202177, -6545839, -31373232, -9574638, -32150642, -8119683, -12906320, 3852694, 13216206, 14842320},
+               },
+               {
+                       FieldElement{-15815640, -10601066, -6538952, -7258995, -6984659, -6581778, -31500847, 13765824, -27434397, 9900184},
+                       FieldElement{14465505, -13833331, -32133984, -14738873, -27443187, 12990492, 33046193, 15796406, -7051866, -8040114},
+                       FieldElement{30924417, -8279620, 6359016, -12816335, 16508377, 9071735, -25488601, 15413635, 9524356, -7018878},
+               },
+               {
+                       FieldElement{12274201, -13175547, 32627641, -1785326, 6736625, 13267305, 5237659, -5109483, 15663516, 4035784},
+                       FieldElement{-2951309, 8903985, 17349946, 601635, -16432815, -4612556, -13732739, -15889334, -22258478, 4659091},
+                       FieldElement{-16916263, -4952973, -30393711, -15158821, 20774812, 15897498, 5736189, 15026997, -2178256, -13455585},
+               },
+       },
+       {
+               {
+                       FieldElement{-8858980, -2219056, 28571666, -10155518, -474467, -10105698, -3801496, 278095, 23440562, -290208},
+                       FieldElement{10226241, -5928702, 15139956, 120818, -14867693, 5218603, 32937275, 11551483, -16571960, -7442864},
+                       FieldElement{17932739, -12437276, -24039557, 10749060, 11316803, 7535897, 22503767, 5561594, -3646624, 3898661},
+               },
+               {
+                       FieldElement{7749907, -969567, -16339731, -16464, -25018111, 15122143, -1573531, 7152530, 21831162, 1245233},
+                       FieldElement{26958459, -14658026, 4314586, 8346991, -5677764, 11960072, -32589295, -620035, -30402091, -16716212},
+                       FieldElement{-12165896, 9166947, 33491384, 13673479, 29787085, 13096535, 6280834, 14587357, -22338025, 13987525},
+               },
+               {
+                       FieldElement{-24349909, 7778775, 21116000, 15572597, -4833266, -5357778, -4300898, -5124639, -7469781, -2858068},
+                       FieldElement{9681908, -6737123, -31951644, 13591838, -6883821, 386950, 31622781, 6439245, -14581012, 4091397},
+                       FieldElement{-8426427, 1470727, -28109679, -1596990, 3978627, -5123623, -19622683, 12092163, 29077877, -14741988},
+               },
+               {
+                       FieldElement{5269168, -6859726, -13230211, -8020715, 25932563, 1763552, -5606110, -5505881, -20017847, 2357889},
+                       FieldElement{32264008, -15407652, -5387735, -1160093, -2091322, -3946900, 23104804, -12869908, 5727338, 189038},
+                       FieldElement{14609123, -8954470, -6000566, -16622781, -14577387, -7743898, -26745169, 10942115, -25888931, -14884697},
+               },
+               {
+                       FieldElement{20513500, 5557931, -15604613, 7829531, 26413943, -2019404, -21378968, 7471781, 13913677, -5137875},
+                       FieldElement{-25574376, 11967826, 29233242, 12948236, -6754465, 4713227, -8940970, 14059180, 12878652, 8511905},
+                       FieldElement{-25656801, 3393631, -2955415, -7075526, -2250709, 9366908, -30223418, 6812974, 5568676, -3127656},
+               },
+               {
+                       FieldElement{11630004, 12144454, 2116339, 13606037, 27378885, 15676917, -17408753, -13504373, -14395196, 8070818},
+                       FieldElement{27117696, -10007378, -31282771, -5570088, 1127282, 12772488, -29845906, 10483306, -11552749, -1028714},
+                       FieldElement{10637467, -5688064, 5674781, 1072708, -26343588, -6982302, -1683975, 9177853, -27493162, 15431203},
+               },
+               {
+                       FieldElement{20525145, 10892566, -12742472, 12779443, -29493034, 16150075, -28240519, 14943142, -15056790, -7935931},
+                       FieldElement{-30024462, 5626926, -551567, -9981087, 753598, 11981191, 25244767, -3239766, -3356550, 9594024},
+                       FieldElement{-23752644, 2636870, -5163910, -10103818, 585134, 7877383, 11345683, -6492290, 13352335, -10977084},
+               },
+               {
+                       FieldElement{-1931799, -5407458, 3304649, -12884869, 17015806, -4877091, -29783850, -7752482, -13215537, -319204},
+                       FieldElement{20239939, 6607058, 6203985, 3483793, -18386976, -779229, -20723742, 15077870, -22750759, 14523817},
+                       FieldElement{27406042, -6041657, 27423596, -4497394, 4996214, 10002360, -28842031, -4545494, -30172742, -4805667},
+               },
+       },
+       {
+               {
+                       FieldElement{11374242, 12660715, 17861383, -12540833, 10935568, 1099227, -13886076, -9091740, -27727044, 11358504},
+                       FieldElement{-12730809, 10311867, 1510375, 10778093, -2119455, -9145702, 32676003, 11149336, -26123651, 4985768},
+                       FieldElement{-19096303, 341147, -6197485, -239033, 15756973, -8796662, -983043, 13794114, -19414307, -15621255},
+               },
+               {
+                       FieldElement{6490081, 11940286, 25495923, -7726360, 8668373, -8751316, 3367603, 6970005, -1691065, -9004790},
+                       FieldElement{1656497, 13457317, 15370807, 6364910, 13605745, 8362338, -19174622, -5475723, -16796596, -5031438},
+                       FieldElement{-22273315, -13524424, -64685, -4334223, -18605636, -10921968, -20571065, -7007978, -99853, -10237333},
+               },
+               {
+                       FieldElement{17747465, 10039260, 19368299, -4050591, -20630635, -16041286, 31992683, -15857976, -29260363, -5511971},
+                       FieldElement{31932027, -4986141, -19612382, 16366580, 22023614, 88450, 11371999, -3744247, 4882242, -10626905},
+                       FieldElement{29796507, 37186, 19818052, 10115756, -11829032, 3352736, 18551198, 3272828, -5190932, -4162409},
+               },
+               {
+                       FieldElement{12501286, 4044383, -8612957, -13392385, -32430052, 5136599, -19230378, -3529697, 330070, -3659409},
+                       FieldElement{6384877, 2899513, 17807477, 7663917, -2358888, 12363165, 25366522, -8573892, -271295, 12071499},
+                       FieldElement{-8365515, -4042521, 25133448, -4517355, -6211027, 2265927, -32769618, 1936675, -5159697, 3829363},
+               },
+               {
+                       FieldElement{28425966, -5835433, -577090, -4697198, -14217555, 6870930, 7921550, -6567787, 26333140, 14267664},
+                       FieldElement{-11067219, 11871231, 27385719, -10559544, -4585914, -11189312, 10004786, -8709488, -21761224, 8930324},
+                       FieldElement{-21197785, -16396035, 25654216, -1725397, 12282012, 11008919, 1541940, 4757911, -26491501, -16408940},
+               },
+               {
+                       FieldElement{13537262, -7759490, -20604840, 10961927, -5922820, -13218065, -13156584, 6217254, -15943699, 13814990},
+                       FieldElement{-17422573, 15157790, 18705543, 29619, 24409717, -260476, 27361681, 9257833, -1956526, -1776914},
+                       FieldElement{-25045300, -10191966, 15366585, 15166509, -13105086, 8423556, -29171540, 12361135, -18685978, 4578290},
+               },
+               {
+                       FieldElement{24579768, 3711570, 1342322, -11180126, -27005135, 14124956, -22544529, 14074919, 21964432, 8235257},
+                       FieldElement{-6528613, -2411497, 9442966, -5925588, 12025640, -1487420, -2981514, -1669206, 13006806, 2355433},
+                       FieldElement{-16304899, -13605259, -6632427, -5142349, 16974359, -10911083, 27202044, 1719366, 1141648, -12796236},
+               },
+               {
+                       FieldElement{-12863944, -13219986, -8318266, -11018091, -6810145, -4843894, 13475066, -3133972, 32674895, 13715045},
+                       FieldElement{11423335, -5468059, 32344216, 8962751, 24989809, 9241752, -13265253, 16086212, -28740881, -15642093},
+                       FieldElement{-1409668, 12530728, -6368726, 10847387, 19531186, -14132160, -11709148, 7791794, -27245943, 4383347},
+               },
+       },
+       {
+               {
+                       FieldElement{-28970898, 5271447, -1266009, -9736989, -12455236, 16732599, -4862407, -4906449, 27193557, 6245191},
+                       FieldElement{-15193956, 5362278, -1783893, 2695834, 4960227, 12840725, 23061898, 3260492, 22510453, 8577507},
+                       FieldElement{-12632451, 11257346, -32692994, 13548177, -721004, 10879011, 31168030, 13952092, -29571492, -3635906},
+               },
+               {
+                       FieldElement{3877321, -9572739, 32416692, 5405324, -11004407, -13656635, 3759769, 11935320, 5611860, 8164018},
+                       FieldElement{-16275802, 14667797, 15906460, 12155291, -22111149, -9039718, 32003002, -8832289, 5773085, -8422109},
+                       FieldElement{-23788118, -8254300, 1950875, 8937633, 18686727, 16459170, -905725, 12376320, 31632953, 190926},
+               },
+               {
+                       FieldElement{-24593607, -16138885, -8423991, 13378746, 14162407, 6901328, -8288749, 4508564, -25341555, -3627528},
+                       FieldElement{8884438, -5884009, 6023974, 10104341, -6881569, -4941533, 18722941, -14786005, -1672488, 827625},
+                       FieldElement{-32720583, -16289296, -32503547, 7101210, 13354605, 2659080, -1800575, -14108036, -24878478, 1541286},
+               },
+               {
+                       FieldElement{2901347, -1117687, 3880376, -10059388, -17620940, -3612781, -21802117, -3567481, 20456845, -1885033},
+                       FieldElement{27019610, 12299467, -13658288, -1603234, -12861660, -4861471, -19540150, -5016058, 29439641, 15138866},
+                       FieldElement{21536104, -6626420, -32447818, -10690208, -22408077, 5175814, -5420040, -16361163, 7779328, 109896},
+               },
+               {
+                       FieldElement{30279744, 14648750, -8044871, 6425558, 13639621, -743509, 28698390, 12180118, 23177719, -554075},
+                       FieldElement{26572847, 3405927, -31701700, 12890905, -19265668, 5335866, -6493768, 2378492, 4439158, -13279347},
+                       FieldElement{-22716706, 3489070, -9225266, -332753, 18875722, -1140095, 14819434, -12731527, -17717757, -5461437},
+               },
+               {
+                       FieldElement{-5056483, 16566551, 15953661, 3767752, -10436499, 15627060, -820954, 2177225, 8550082, -15114165},
+                       FieldElement{-18473302, 16596775, -381660, 15663611, 22860960, 15585581, -27844109, -3582739, -23260460, -8428588},
+                       FieldElement{-32480551, 15707275, -8205912, -5652081, 29464558, 2713815, -22725137, 15860482, -21902570, 1494193},
+               },
+               {
+                       FieldElement{-19562091, -14087393, -25583872, -9299552, 13127842, 759709, 21923482, 16529112, 8742704, 12967017},
+                       FieldElement{-28464899, 1553205, 32536856, -10473729, -24691605, -406174, -8914625, -2933896, -29903758, 15553883},
+                       FieldElement{21877909, 3230008, 9881174, 10539357, -4797115, 2841332, 11543572, 14513274, 19375923, -12647961},
+               },
+               {
+                       FieldElement{8832269, -14495485, 13253511, 5137575, 5037871, 4078777, 24880818, -6222716, 2862653, 9455043},
+                       FieldElement{29306751, 5123106, 20245049, -14149889, 9592566, 8447059, -2077124, -2990080, 15511449, 4789663},
+                       FieldElement{-20679756, 7004547, 8824831, -9434977, -4045704, -3750736, -5754762, 108893, 23513200, 16652362},
+               },
+       },
+       {
+               {
+                       FieldElement{-33256173, 4144782, -4476029, -6579123, 10770039, -7155542, -6650416, -12936300, -18319198, 10212860},
+                       FieldElement{2756081, 8598110, 7383731, -6859892, 22312759, -1105012, 21179801, 2600940, -9988298, -12506466},
+                       FieldElement{-24645692, 13317462, -30449259, -15653928, 21365574, -10869657, 11344424, 864440, -2499677, -16710063},
+               },
+               {
+                       FieldElement{-26432803, 6148329, -17184412, -14474154, 18782929, -275997, -22561534, 211300, 2719757, 4940997},
+                       FieldElement{-1323882, 3911313, -6948744, 14759765, -30027150, 7851207, 21690126, 8518463, 26699843, 5276295},
+                       FieldElement{-13149873, -6429067, 9396249, 365013, 24703301, -10488939, 1321586, 149635, -15452774, 7159369},
+               },
+               {
+                       FieldElement{9987780, -3404759, 17507962, 9505530, 9731535, -2165514, 22356009, 8312176, 22477218, -8403385},
+                       FieldElement{18155857, -16504990, 19744716, 9006923, 15154154, -10538976, 24256460, -4864995, -22548173, 9334109},
+                       FieldElement{2986088, -4911893, 10776628, -3473844, 10620590, -7083203, -21413845, 14253545, -22587149, 536906},
+               },
+               {
+                       FieldElement{4377756, 8115836, 24567078, 15495314, 11625074, 13064599, 7390551, 10589625, 10838060, -15420424},
+                       FieldElement{-19342404, 867880, 9277171, -3218459, -14431572, -1986443, 19295826, -15796950, 6378260, 699185},
+                       FieldElement{7895026, 4057113, -7081772, -13077756, -17886831, -323126, -716039, 15693155, -5045064, -13373962},
+               },
+               {
+                       FieldElement{-7737563, -5869402, -14566319, -7406919, 11385654, 13201616, 31730678, -10962840, -3918636, -9669325},
+                       FieldElement{10188286, -15770834, -7336361, 13427543, 22223443, 14896287, 30743455, 7116568, -21786507, 5427593},
+                       FieldElement{696102, 13206899, 27047647, -10632082, 15285305, -9853179, 10798490, -4578720, 19236243, 12477404},
+               },
+               {
+                       FieldElement{-11229439, 11243796, -17054270, -8040865, -788228, -8167967, -3897669, 11180504, -23169516, 7733644},
+                       FieldElement{17800790, -14036179, -27000429, -11766671, 23887827, 3149671, 23466177, -10538171, 10322027, 15313801},
+                       FieldElement{26246234, 11968874, 32263343, -5468728, 6830755, -13323031, -15794704, -101982, -24449242, 10890804},
+               },
+               {
+                       FieldElement{-31365647, 10271363, -12660625, -6267268, 16690207, -13062544, -14982212, 16484931, 25180797, -5334884},
+                       FieldElement{-586574, 10376444, -32586414, -11286356, 19801893, 10997610, 2276632, 9482883, 316878, 13820577},
+                       FieldElement{-9882808, -4510367, -2115506, 16457136, -11100081, 11674996, 30756178, -7515054, 30696930, -3712849},
+               },
+               {
+                       FieldElement{32988917, -9603412, 12499366, 7910787, -10617257, -11931514, -7342816, -9985397, -32349517, 7392473},
+                       FieldElement{-8855661, 15927861, 9866406, -3649411, -2396914, -16655781, -30409476, -9134995, 25112947, -2926644},
+                       FieldElement{-2504044, -436966, 25621774, -5678772, 15085042, -5479877, -24884878, -13526194, 5537438, -13914319},
+               },
+       },
+       {
+               {
+                       FieldElement{-11225584, 2320285, -9584280, 10149187, -33444663, 5808648, -14876251, -1729667, 31234590, 6090599},
+                       FieldElement{-9633316, 116426, 26083934, 2897444, -6364437, -2688086, 609721, 15878753, -6970405, -9034768},
+                       FieldElement{-27757857, 247744, -15194774, -9002551, 23288161, -10011936, -23869595, 6503646, 20650474, 1804084},
+               },
+               {
+                       FieldElement{-27589786, 15456424, 8972517, 8469608, 15640622, 4439847, 3121995, -10329713, 27842616, -202328},
+                       FieldElement{-15306973, 2839644, 22530074, 10026331, 4602058, 5048462, 28248656, 5031932, -11375082, 12714369},
+                       FieldElement{20807691, -7270825, 29286141, 11421711, -27876523, -13868230, -21227475, 1035546, -19733229, 12796920},
+               },
+               {
+                       FieldElement{12076899, -14301286, -8785001, -11848922, -25012791, 16400684, -17591495, -12899438, 3480665, -15182815},
+                       FieldElement{-32361549, 5457597, 28548107, 7833186, 7303070, -11953545, -24363064, -15921875, -33374054, 2771025},
+                       FieldElement{-21389266, 421932, 26597266, 6860826, 22486084, -6737172, -17137485, -4210226, -24552282, 15673397},
+               },
+               {
+                       FieldElement{-20184622, 2338216, 19788685, -9620956, -4001265, -8740893, -20271184, 4733254, 3727144, -12934448},
+                       FieldElement{6120119, 814863, -11794402, -622716, 6812205, -15747771, 2019594, 7975683, 31123697, -10958981},
+                       FieldElement{30069250, -11435332, 30434654, 2958439, 18399564, -976289, 12296869, 9204260, -16432438, 9648165},
+               },
+               {
+                       FieldElement{32705432, -1550977, 30705658, 7451065, -11805606, 9631813, 3305266, 5248604, -26008332, -11377501},
+                       FieldElement{17219865, 2375039, -31570947, -5575615, -19459679, 9219903, 294711, 15298639, 2662509, -16297073},
+                       FieldElement{-1172927, -7558695, -4366770, -4287744, -21346413, -8434326, 32087529, -1222777, 32247248, -14389861},
+               },
+               {
+                       FieldElement{14312628, 1221556, 17395390, -8700143, -4945741, -8684635, -28197744, -9637817, -16027623, -13378845},
+                       FieldElement{-1428825, -9678990, -9235681, 6549687, -7383069, -468664, 23046502, 9803137, 17597934, 2346211},
+                       FieldElement{18510800, 15337574, 26171504, 981392, -22241552, 7827556, -23491134, -11323352, 3059833, -11782870},
+               },
+               {
+                       FieldElement{10141598, 6082907, 17829293, -1947643, 9830092, 13613136, -25556636, -5544586, -33502212, 3592096},
+                       FieldElement{33114168, -15889352, -26525686, -13343397, 33076705, 8716171, 1151462, 1521897, -982665, -6837803},
+                       FieldElement{-32939165, -4255815, 23947181, -324178, -33072974, -12305637, -16637686, 3891704, 26353178, 693168},
+               },
+               {
+                       FieldElement{30374239, 1595580, -16884039, 13186931, 4600344, 406904, 9585294, -400668, 31375464, 14369965},
+                       FieldElement{-14370654, -7772529, 1510301, 6434173, -18784789, -6262728, 32732230, -13108839, 17901441, 16011505},
+                       FieldElement{18171223, -11934626, -12500402, 15197122, -11038147, -15230035, -19172240, -16046376, 8764035, 12309598},
+               },
+       },
+       {
+               {
+                       FieldElement{5975908, -5243188, -19459362, -9681747, -11541277, 14015782, -23665757, 1228319, 17544096, -10593782},
+                       FieldElement{5811932, -1715293, 3442887, -2269310, -18367348, -8359541, -18044043, -15410127, -5565381, 12348900},
+                       FieldElement{-31399660, 11407555, 25755363, 6891399, -3256938, 14872274, -24849353, 8141295, -10632534, -585479},
+               },
+               {
+                       FieldElement{-12675304, 694026, -5076145, 13300344, 14015258, -14451394, -9698672, -11329050, 30944593, 1130208},
+                       FieldElement{8247766, -6710942, -26562381, -7709309, -14401939, -14648910, 4652152, 2488540, 23550156, -271232},
+                       FieldElement{17294316, -3788438, 7026748, 15626851, 22990044, 113481, 2267737, -5908146, -408818, -137719},
+               },
+               {
+                       FieldElement{16091085, -16253926, 18599252, 7340678, 2137637, -1221657, -3364161, 14550936, 3260525, -7166271},
+                       FieldElement{-4910104, -13332887, 18550887, 10864893, -16459325, -7291596, -23028869, -13204905, -12748722, 2701326},
+                       FieldElement{-8574695, 16099415, 4629974, -16340524, -20786213, -6005432, -10018363, 9276971, 11329923, 1862132},
+               },
+               {
+                       FieldElement{14763076, -15903608, -30918270, 3689867, 3511892, 10313526, -21951088, 12219231, -9037963, -940300},
+                       FieldElement{8894987, -3446094, 6150753, 3013931, 301220, 15693451, -31981216, -2909717, -15438168, 11595570},
+                       FieldElement{15214962, 3537601, -26238722, -14058872, 4418657, -15230761, 13947276, 10730794, -13489462, -4363670},
+               },
+               {
+                       FieldElement{-2538306, 7682793, 32759013, 263109, -29984731, -7955452, -22332124, -10188635, 977108, 699994},
+                       FieldElement{-12466472, 4195084, -9211532, 550904, -15565337, 12917920, 19118110, -439841, -30534533, -14337913},
+                       FieldElement{31788461, -14507657, 4799989, 7372237, 8808585, -14747943, 9408237, -10051775, 12493932, -5409317},
+               },
+               {
+                       FieldElement{-25680606, 5260744, -19235809, -6284470, -3695942, 16566087, 27218280, 2607121, 29375955, 6024730},
+                       FieldElement{842132, -2794693, -4763381, -8722815, 26332018, -12405641, 11831880, 6985184, -9940361, 2854096},
+                       FieldElement{-4847262, -7969331, 2516242, -5847713, 9695691, -7221186, 16512645, 960770, 12121869, 16648078},
+               },
+               {
+                       FieldElement{-15218652, 14667096, -13336229, 2013717, 30598287, -464137, -31504922, -7882064, 20237806, 2838411},
+                       FieldElement{-19288047, 4453152, 15298546, -16178388, 22115043, -15972604, 12544294, -13470457, 1068881, -12499905},
+                       FieldElement{-9558883, -16518835, 33238498, 13506958, 30505848, -1114596, -8486907, -2630053, 12521378, 4845654},
+               },
+               {
+                       FieldElement{-28198521, 10744108, -2958380, 10199664, 7759311, -13088600, 3409348, -873400, -6482306, -12885870},
+                       FieldElement{-23561822, 6230156, -20382013, 10655314, -24040585, -11621172, 10477734, -1240216, -3113227, 13974498},
+                       FieldElement{12966261, 15550616, -32038948, -1615346, 21025980, -629444, 5642325, 7188737, 18895762, 12629579},
+               },
+       },
+       {
+               {
+                       FieldElement{14741879, -14946887, 22177208, -11721237, 1279741, 8058600, 11758140, 789443, 32195181, 3895677},
+                       FieldElement{10758205, 15755439, -4509950, 9243698, -4879422, 6879879, -2204575, -3566119, -8982069, 4429647},
+                       FieldElement{-2453894, 15725973, -20436342, -10410672, -5803908, -11040220, -7135870, -11642895, 18047436, -15281743},
+               },
+               {
+                       FieldElement{-25173001, -11307165, 29759956, 11776784, -22262383, -15820455, 10993114, -12850837, -17620701, -9408468},
+                       FieldElement{21987233, 700364, -24505048, 14972008, -7774265, -5718395, 32155026, 2581431, -29958985, 8773375},
+                       FieldElement{-25568350, 454463, -13211935, 16126715, 25240068, 8594567, 20656846, 12017935, -7874389, -13920155},
+               },
+               {
+                       FieldElement{6028182, 6263078, -31011806, -11301710, -818919, 2461772, -31841174, -5468042, -1721788, -2776725},
+                       FieldElement{-12278994, 16624277, 987579, -5922598, 32908203, 1248608, 7719845, -4166698, 28408820, 6816612},
+                       FieldElement{-10358094, -8237829, 19549651, -12169222, 22082623, 16147817, 20613181, 13982702, -10339570, 5067943},
+               },
+               {
+                       FieldElement{-30505967, -3821767, 12074681, 13582412, -19877972, 2443951, -19719286, 12746132, 5331210, -10105944},
+                       FieldElement{30528811, 3601899, -1957090, 4619785, -27361822, -15436388, 24180793, -12570394, 27679908, -1648928},
+                       FieldElement{9402404, -13957065, 32834043, 10838634, -26580150, -13237195, 26653274, -8685565, 22611444, -12715406},
+               },
+               {
+                       FieldElement{22190590, 1118029, 22736441, 15130463, -30460692, -5991321, 19189625, -4648942, 4854859, 6622139},
+                       FieldElement{-8310738, -2953450, -8262579, -3388049, -10401731, -271929, 13424426, -3567227, 26404409, 13001963},
+                       FieldElement{-31241838, -15415700, -2994250, 8939346, 11562230, -12840670, -26064365, -11621720, -15405155, 11020693},
+               },
+               {
+                       FieldElement{1866042, -7949489, -7898649, -10301010, 12483315, 13477547, 3175636, -12424163, 28761762, 1406734},
+                       FieldElement{-448555, -1777666, 13018551, 3194501, -9580420, -11161737, 24760585, -4347088, 25577411, -13378680},
+                       FieldElement{-24290378, 4759345, -690653, -1852816, 2066747, 10693769, -29595790, 9884936, -9368926, 4745410},
+               },
+               {
+                       FieldElement{-9141284, 6049714, -19531061, -4341411, -31260798, 9944276, -15462008, -11311852, 10931924, -11931931},
+                       FieldElement{-16561513, 14112680, -8012645, 4817318, -8040464, -11414606, -22853429, 10856641, -20470770, 13434654},
+                       FieldElement{22759489, -10073434, -16766264, -1871422, 13637442, -10168091, 1765144, -12654326, 28445307, -5364710},
+               },
+               {
+                       FieldElement{29875063, 12493613, 2795536, -3786330, 1710620, 15181182, -10195717, -8788675, 9074234, 1167180},
+                       FieldElement{-26205683, 11014233, -9842651, -2635485, -26908120, 7532294, -18716888, -9535498, 3843903, 9367684},
+                       FieldElement{-10969595, -6403711, 9591134, 9582310, 11349256, 108879, 16235123, 8601684, -139197, 4242895},
+               },
+       },
+       {
+               {
+                       FieldElement{22092954, -13191123, -2042793, -11968512, 32186753, -11517388, -6574341, 2470660, -27417366, 16625501},
+                       FieldElement{-11057722, 3042016, 13770083, -9257922, 584236, -544855, -7770857, 2602725, -27351616, 14247413},
+                       FieldElement{6314175, -10264892, -32772502, 15957557, -10157730, 168750, -8618807, 14290061, 27108877, -1180880},
+               },
+               {
+                       FieldElement{-8586597, -7170966, 13241782, 10960156, -32991015, -13794596, 33547976, -11058889, -27148451, 981874},
+                       FieldElement{22833440, 9293594, -32649448, -13618667, -9136966, 14756819, -22928859, -13970780, -10479804, -16197962},
+                       FieldElement{-7768587, 3326786, -28111797, 10783824, 19178761, 14905060, 22680049, 13906969, -15933690, 3797899},
+               },
+               {
+                       FieldElement{21721356, -4212746, -12206123, 9310182, -3882239, -13653110, 23740224, -2709232, 20491983, -8042152},
+                       FieldElement{9209270, -15135055, -13256557, -6167798, -731016, 15289673, 25947805, 15286587, 30997318, -6703063},
+                       FieldElement{7392032, 16618386, 23946583, -8039892, -13265164, -1533858, -14197445, -2321576, 17649998, -250080},
+               },
+               {
+                       FieldElement{-9301088, -14193827, 30609526, -3049543, -25175069, -1283752, -15241566, -9525724, -2233253, 7662146},
+                       FieldElement{-17558673, 1763594, -33114336, 15908610, -30040870, -12174295, 7335080, -8472199, -3174674, 3440183},
+                       FieldElement{-19889700, -5977008, -24111293, -9688870, 10799743, -16571957, 40450, -4431835, 4862400, 1133},
+               },
+               {
+                       FieldElement{-32856209, -7873957, -5422389, 14860950, -16319031, 7956142, 7258061, 311861, -30594991, -7379421},
+                       FieldElement{-3773428, -1565936, 28985340, 7499440, 24445838, 9325937, 29727763, 16527196, 18278453, 15405622},
+                       FieldElement{-4381906, 8508652, -19898366, -3674424, -5984453, 15149970, -13313598, 843523, -21875062, 13626197},
+               },
+               {
+                       FieldElement{2281448, -13487055, -10915418, -2609910, 1879358, 16164207, -10783882, 3953792, 13340839, 15928663},
+                       FieldElement{31727126, -7179855, -18437503, -8283652, 2875793, -16390330, -25269894, -7014826, -23452306, 5964753},
+                       FieldElement{4100420, -5959452, -17179337, 6017714, -18705837, 12227141, -26684835, 11344144, 2538215, -7570755},
+               },
+               {
+                       FieldElement{-9433605, 6123113, 11159803, -2156608, 30016280, 14966241, -20474983, 1485421, -629256, -15958862},
+                       FieldElement{-26804558, 4260919, 11851389, 9658551, -32017107, 16367492, -20205425, -13191288, 11659922, -11115118},
+                       FieldElement{26180396, 10015009, -30844224, -8581293, 5418197, 9480663, 2231568, -10170080, 33100372, -1306171},
+               },
+               {
+                       FieldElement{15121113, -5201871, -10389905, 15427821, -27509937, -15992507, 21670947, 4486675, -5931810, -14466380},
+                       FieldElement{16166486, -9483733, -11104130, 6023908, -31926798, -1364923, 2340060, -16254968, -10735770, -10039824},
+                       FieldElement{28042865, -3557089, -12126526, 12259706, -3717498, -6945899, 6766453, -8689599, 18036436, 5803270},
+               },
+       },
+       {
+               {
+                       FieldElement{-817581, 6763912, 11803561, 1585585, 10958447, -2671165, 23855391, 4598332, -6159431, -14117438},
+                       FieldElement{-31031306, -14256194, 17332029, -2383520, 31312682, -5967183, 696309, 50292, -20095739, 11763584},
+                       FieldElement{-594563, -2514283, -32234153, 12643980, 12650761, 14811489, 665117, -12613632, -19773211, -10713562},
+               },
+               {
+                       FieldElement{30464590, -11262872, -4127476, -12734478, 19835327, -7105613, -24396175, 2075773, -17020157, 992471},
+                       FieldElement{18357185, -6994433, 7766382, 16342475, -29324918, 411174, 14578841, 8080033, -11574335, -10601610},
+                       FieldElement{19598397, 10334610, 12555054, 2555664, 18821899, -10339780, 21873263, 16014234, 26224780, 16452269},
+               },
+               {
+                       FieldElement{-30223925, 5145196, 5944548, 16385966, 3976735, 2009897, -11377804, -7618186, -20533829, 3698650},
+                       FieldElement{14187449, 3448569, -10636236, -10810935, -22663880, -3433596, 7268410, -10890444, 27394301, 12015369},
+                       FieldElement{19695761, 16087646, 28032085, 12999827, 6817792, 11427614, 20244189, -1312777, -13259127, -3402461},
+               },
+               {
+                       FieldElement{30860103, 12735208, -1888245, -4699734, -16974906, 2256940, -8166013, 12298312, -8550524, -10393462},
+                       FieldElement{-5719826, -11245325, -1910649, 15569035, 26642876, -7587760, -5789354, -15118654, -4976164, 12651793},
+                       FieldElement{-2848395, 9953421, 11531313, -5282879, 26895123, -12697089, -13118820, -16517902, 9768698, -2533218},
+               },
+               {
+                       FieldElement{-24719459, 1894651, -287698, -4704085, 15348719, -8156530, 32767513, 12765450, 4940095, 10678226},
+                       FieldElement{18860224, 15980149, -18987240, -1562570, -26233012, -11071856, -7843882, 13944024, -24372348, 16582019},
+                       FieldElement{-15504260, 4970268, -29893044, 4175593, -20993212, -2199756, -11704054, 15444560, -11003761, 7989037},
+               },
+               {
+                       FieldElement{31490452, 5568061, -2412803, 2182383, -32336847, 4531686, -32078269, 6200206, -19686113, -14800171},
+                       FieldElement{-17308668, -15879940, -31522777, -2831, -32887382, 16375549, 8680158, -16371713, 28550068, -6857132},
+                       FieldElement{-28126887, -5688091, 16837845, -1820458, -6850681, 12700016, -30039981, 4364038, 1155602, 5988841},
+               },
+               {
+                       FieldElement{21890435, -13272907, -12624011, 12154349, -7831873, 15300496, 23148983, -4470481, 24618407, 8283181},
+                       FieldElement{-33136107, -10512751, 9975416, 6841041, -31559793, 16356536, 3070187, -7025928, 1466169, 10740210},
+                       FieldElement{-1509399, -15488185, -13503385, -10655916, 32799044, 909394, -13938903, -5779719, -32164649, -15327040},
+               },
+               {
+                       FieldElement{3960823, -14267803, -28026090, -15918051, -19404858, 13146868, 15567327, 951507, -3260321, -573935},
+                       FieldElement{24740841, 5052253, -30094131, 8961361, 25877428, 6165135, -24368180, 14397372, -7380369, -6144105},
+                       FieldElement{-28888365, 3510803, -28103278, -1158478, -11238128, -10631454, -15441463, -14453128, -1625486, -6494814},
+               },
+       },
+       {
+               {
+                       FieldElement{793299, -9230478, 8836302, -6235707, -27360908, -2369593, 33152843, -4885251, -9906200, -621852},
+                       FieldElement{5666233, 525582, 20782575, -8038419, -24538499, 14657740, 16099374, 1468826, -6171428, -15186581},
+                       FieldElement{-4859255, -3779343, -2917758, -6748019, 7778750, 11688288, -30404353, -9871238, -1558923, -9863646},
+               },
+               {
+                       FieldElement{10896332, -7719704, 824275, 472601, -19460308, 3009587, 25248958, 14783338, -30581476, -15757844},
+                       FieldElement{10566929, 12612572, -31944212, 11118703, -12633376, 12362879, 21752402, 8822496, 24003793, 14264025},
+                       FieldElement{27713862, -7355973, -11008240, 9227530, 27050101, 2504721, 23886875, -13117525, 13958495, -5732453},
+               },
+               {
+                       FieldElement{-23481610, 4867226, -27247128, 3900521, 29838369, -8212291, -31889399, -10041781, 7340521, -15410068},
+                       FieldElement{4646514, -8011124, -22766023, -11532654, 23184553, 8566613, 31366726, -1381061, -15066784, -10375192},
+                       FieldElement{-17270517, 12723032, -16993061, 14878794, 21619651, -6197576, 27584817, 3093888, -8843694, 3849921},
+               },
+               {
+                       FieldElement{-9064912, 2103172, 25561640, -15125738, -5239824, 9582958, 32477045, -9017955, 5002294, -15550259},
+                       FieldElement{-12057553, -11177906, 21115585, -13365155, 8808712, -12030708, 16489530, 13378448, -25845716, 12741426},
+                       FieldElement{-5946367, 10645103, -30911586, 15390284, -3286982, -7118677, 24306472, 15852464, 28834118, -7646072},
+               },
+               {
+                       FieldElement{-17335748, -9107057, -24531279, 9434953, -8472084, -583362, -13090771, 455841, 20461858, 5491305},
+                       FieldElement{13669248, -16095482, -12481974, -10203039, -14569770, -11893198, -24995986, 11293807, -28588204, -9421832},
+                       FieldElement{28497928, 6272777, -33022994, 14470570, 8906179, -1225630, 18504674, -14165166, 29867745, -8795943},
+               },
+               {
+                       FieldElement{-16207023, 13517196, -27799630, -13697798, 24009064, -6373891, -6367600, -13175392, 22853429, -4012011},
+                       FieldElement{24191378, 16712145, -13931797, 15217831, 14542237, 1646131, 18603514, -11037887, 12876623, -2112447},
+                       FieldElement{17902668, 4518229, -411702, -2829247, 26878217, 5258055, -12860753, 608397, 16031844, 3723494},
+               },
+               {
+                       FieldElement{-28632773, 12763728, -20446446, 7577504, 33001348, -13017745, 17558842, -7872890, 23896954, -4314245},
+                       FieldElement{-20005381, -12011952, 31520464, 605201, 2543521, 5991821, -2945064, 7229064, -9919646, -8826859},
+                       FieldElement{28816045, 298879, -28165016, -15920938, 19000928, -1665890, -12680833, -2949325, -18051778, -2082915},
+               },
+               {
+                       FieldElement{16000882, -344896, 3493092, -11447198, -29504595, -13159789, 12577740, 16041268, -19715240, 7847707},
+                       FieldElement{10151868, 10572098, 27312476, 7922682, 14825339, 4723128, -32855931, -6519018, -10020567, 3852848},
+                       FieldElement{-11430470, 15697596, -21121557, -4420647, 5386314, 15063598, 16514493, -15932110, 29330899, -15076224},
+               },
+       },
+       {
+               {
+                       FieldElement{-25499735, -4378794, -15222908, -6901211, 16615731, 2051784, 3303702, 15490, -27548796, 12314391},
+                       FieldElement{15683520, -6003043, 18109120, -9980648, 15337968, -5997823, -16717435, 15921866, 16103996, -3731215},
+                       FieldElement{-23169824, -10781249, 13588192, -1628807, -3798557, -1074929, -19273607, 5402699, -29815713, -9841101},
+               },
+               {
+                       FieldElement{23190676, 2384583, -32714340, 3462154, -29903655, -1529132, -11266856, 8911517, -25205859, 2739713},
+                       FieldElement{21374101, -3554250, -33524649, 9874411, 15377179, 11831242, -33529904, 6134907, 4931255, 11987849},
+                       FieldElement{-7732, -2978858, -16223486, 7277597, 105524, -322051, -31480539, 13861388, -30076310, 10117930},
+               },
+               {
+                       FieldElement{-29501170, -10744872, -26163768, 13051539, -25625564, 5089643, -6325503, 6704079, 12890019, 15728940},
+                       FieldElement{-21972360, -11771379, -951059, -4418840, 14704840, 2695116, 903376, -10428139, 12885167, 8311031},
+                       FieldElement{-17516482, 5352194, 10384213, -13811658, 7506451, 13453191, 26423267, 4384730, 1888765, -5435404},
+               },
+               {
+                       FieldElement{-25817338, -3107312, -13494599, -3182506, 30896459, -13921729, -32251644, -12707869, -19464434, -3340243},
+                       FieldElement{-23607977, -2665774, -526091, 4651136, 5765089, 4618330, 6092245, 14845197, 17151279, -9854116},
+                       FieldElement{-24830458, -12733720, -15165978, 10367250, -29530908, -265356, 22825805, -7087279, -16866484, 16176525},
+               },
+               {
+                       FieldElement{-23583256, 6564961, 20063689, 3798228, -4740178, 7359225, 2006182, -10363426, -28746253, -10197509},
+                       FieldElement{-10626600, -4486402, -13320562, -5125317, 3432136, -6393229, 23632037, -1940610, 32808310, 1099883},
+                       FieldElement{15030977, 5768825, -27451236, -2887299, -6427378, -15361371, -15277896, -6809350, 2051441, -15225865},
+               },
+               {
+                       FieldElement{-3362323, -7239372, 7517890, 9824992, 23555850, 295369, 5148398, -14154188, -22686354, 16633660},
+                       FieldElement{4577086, -16752288, 13249841, -15304328, 19958763, -14537274, 18559670, -10759549, 8402478, -9864273},
+                       FieldElement{-28406330, -1051581, -26790155, -907698, -17212414, -11030789, 9453451, -14980072, 17983010, 9967138},
+               },
+               {
+                       FieldElement{-25762494, 6524722, 26585488, 9969270, 24709298, 1220360, -1677990, 7806337, 17507396, 3651560},
+                       FieldElement{-10420457, -4118111, 14584639, 15971087, -15768321, 8861010, 26556809, -5574557, -18553322, -11357135},
+                       FieldElement{2839101, 14284142, 4029895, 3472686, 14402957, 12689363, -26642121, 8459447, -5605463, -7621941},
+               },
+               {
+                       FieldElement{-4839289, -3535444, 9744961, 2871048, 25113978, 3187018, -25110813, -849066, 17258084, -7977739},
+                       FieldElement{18164541, -10595176, -17154882, -1542417, 19237078, -9745295, 23357533, -15217008, 26908270, 12150756},
+                       FieldElement{-30264870, -7647865, 5112249, -7036672, -1499807, -6974257, 43168, -5537701, -32302074, 16215819},
+               },
+       },
+       {
+               {
+                       FieldElement{-6898905, 9824394, -12304779, -4401089, -31397141, -6276835, 32574489, 12532905, -7503072, -8675347},
+                       FieldElement{-27343522, -16515468, -27151524, -10722951, 946346, 16291093, 254968, 7168080, 21676107, -1943028},
+                       FieldElement{21260961, -8424752, -16831886, -11920822, -23677961, 3968121, -3651949, -6215466, -3556191, -7913075},
+               },
+               {
+                       FieldElement{16544754, 13250366, -16804428, 15546242, -4583003, 12757258, -2462308, -8680336, -18907032, -9662799},
+                       FieldElement{-2415239, -15577728, 18312303, 4964443, -15272530, -12653564, 26820651, 16690659, 25459437, -4564609},
+                       FieldElement{-25144690, 11425020, 28423002, -11020557, -6144921, -15826224, 9142795, -2391602, -6432418, -1644817},
+               },
+               {
+                       FieldElement{-23104652, 6253476, 16964147, -3768872, -25113972, -12296437, -27457225, -16344658, 6335692, 7249989},
+                       FieldElement{-30333227, 13979675, 7503222, -12368314, -11956721, -4621693, -30272269, 2682242, 25993170, -12478523},
+                       FieldElement{4364628, 5930691, 32304656, -10044554, -8054781, 15091131, 22857016, -10598955, 31820368, 15075278},
+               },
+               {
+                       FieldElement{31879134, -8918693, 17258761, 90626, -8041836, -4917709, 24162788, -9650886, -17970238, 12833045},
+                       FieldElement{19073683, 14851414, -24403169, -11860168, 7625278, 11091125, -19619190, 2074449, -9413939, 14905377},
+                       FieldElement{24483667, -11935567, -2518866, -11547418, -1553130, 15355506, -25282080, 9253129, 27628530, -7555480},
+               },
+               {
+                       FieldElement{17597607, 8340603, 19355617, 552187, 26198470, -3176583, 4593324, -9157582, -14110875, 15297016},
+                       FieldElement{510886, 14337390, -31785257, 16638632, 6328095, 2713355, -20217417, -11864220, 8683221, 2921426},
+                       FieldElement{18606791, 11874196, 27155355, -5281482, -24031742, 6265446, -25178240, -1278924, 4674690, 13890525},
+               },
+               {
+                       FieldElement{13609624, 13069022, -27372361, -13055908, 24360586, 9592974, 14977157, 9835105, 4389687, 288396},
+                       FieldElement{9922506, -519394, 13613107, 5883594, -18758345, -434263, -12304062, 8317628, 23388070, 16052080},
+                       FieldElement{12720016, 11937594, -31970060, -5028689, 26900120, 8561328, -20155687, -11632979, -14754271, -10812892},
+               },
+               {
+                       FieldElement{15961858, 14150409, 26716931, -665832, -22794328, 13603569, 11829573, 7467844, -28822128, 929275},
+                       FieldElement{11038231, -11582396, -27310482, -7316562, -10498527, -16307831, -23479533, -9371869, -21393143, 2465074},
+                       FieldElement{20017163, -4323226, 27915242, 1529148, 12396362, 15675764, 13817261, -9658066, 2463391, -4622140},
+               },
+               {
+                       FieldElement{-16358878, -12663911, -12065183, 4996454, -1256422, 1073572, 9583558, 12851107, 4003896, 12673717},
+                       FieldElement{-1731589, -15155870, -3262930, 16143082, 19294135, 13385325, 14741514, -9103726, 7903886, 2348101},
+                       FieldElement{24536016, -16515207, 12715592, -3862155, 1511293, 10047386, -3842346, -7129159, -28377538, 10048127},
+               },
+       },
+       {
+               {
+                       FieldElement{-12622226, -6204820, 30718825, 2591312, -10617028, 12192840, 18873298, -7297090, -32297756, 15221632},
+                       FieldElement{-26478122, -11103864, 11546244, -1852483, 9180880, 7656409, -21343950, 2095755, 29769758, 6593415},
+                       FieldElement{-31994208, -2907461, 4176912, 3264766, 12538965, -868111, 26312345, -6118678, 30958054, 8292160},
+               },
+               {
+                       FieldElement{31429822, -13959116, 29173532, 15632448, 12174511, -2760094, 32808831, 3977186, 26143136, -3148876},
+                       FieldElement{22648901, 1402143, -22799984, 13746059, 7936347, 365344, -8668633, -1674433, -3758243, -2304625},
+                       FieldElement{-15491917, 8012313, -2514730, -12702462, -23965846, -10254029, -1612713, -1535569, -16664475, 8194478},
+               },
+               {
+                       FieldElement{27338066, -7507420, -7414224, 10140405, -19026427, -6589889, 27277191, 8855376, 28572286, 3005164},
+                       FieldElement{26287124, 4821776, 25476601, -4145903, -3764513, -15788984, -18008582, 1182479, -26094821, -13079595},
+                       FieldElement{-7171154, 3178080, 23970071, 6201893, -17195577, -4489192, -21876275, -13982627, 32208683, -1198248},
+               },
+               {
+                       FieldElement{-16657702, 2817643, -10286362, 14811298, 6024667, 13349505, -27315504, -10497842, -27672585, -11539858},
+                       FieldElement{15941029, -9405932, -21367050, 8062055, 31876073, -238629, -15278393, -1444429, 15397331, -4130193},
+                       FieldElement{8934485, -13485467, -23286397, -13423241, -32446090, 14047986, 31170398, -1441021, -27505566, 15087184},
+               },
+               {
+                       FieldElement{-18357243, -2156491, 24524913, -16677868, 15520427, -6360776, -15502406, 11461896, 16788528, -5868942},
+                       FieldElement{-1947386, 16013773, 21750665, 3714552, -17401782, -16055433, -3770287, -10323320, 31322514, -11615635},
+                       FieldElement{21426655, -5650218, -13648287, -5347537, -28812189, -4920970, -18275391, -14621414, 13040862, -12112948},
+               },
+               {
+                       FieldElement{11293895, 12478086, -27136401, 15083750, -29307421, 14748872, 14555558, -13417103, 1613711, 4896935},
+                       FieldElement{-25894883, 15323294, -8489791, -8057900, 25967126, -13425460, 2825960, -4897045, -23971776, -11267415},
+                       FieldElement{-15924766, -5229880, -17443532, 6410664, 3622847, 10243618, 20615400, 12405433, -23753030, -8436416},
+               },
+               {
+                       FieldElement{-7091295, 12556208, -20191352, 9025187, -17072479, 4333801, 4378436, 2432030, 23097949, -566018},
+                       FieldElement{4565804, -16025654, 20084412, -7842817, 1724999, 189254, 24767264, 10103221, -18512313, 2424778},
+                       FieldElement{366633, -11976806, 8173090, -6890119, 30788634, 5745705, -7168678, 1344109, -3642553, 12412659},
+               },
+               {
+                       FieldElement{-24001791, 7690286, 14929416, -168257, -32210835, -13412986, 24162697, -15326504, -3141501, 11179385},
+                       FieldElement{18289522, -14724954, 8056945, 16430056, -21729724, 7842514, -6001441, -1486897, -18684645, -11443503},
+                       FieldElement{476239, 6601091, -6152790, -9723375, 17503545, -4863900, 27672959, 13403813, 11052904, 5219329},
+               },
+       },
+       {
+               {
+                       FieldElement{20678546, -8375738, -32671898, 8849123, -5009758, 14574752, 31186971, -3973730, 9014762, -8579056},
+                       FieldElement{-13644050, -10350239, -15962508, 5075808, -1514661, -11534600, -33102500, 9160280, 8473550, -3256838},
+                       FieldElement{24900749, 14435722, 17209120, -15292541, -22592275, 9878983, -7689309, -16335821, -24568481, 11788948},
+               },
+               {
+                       FieldElement{-3118155, -11395194, -13802089, 14797441, 9652448, -6845904, -20037437, 10410733, -24568470, -1458691},
+                       FieldElement{-15659161, 16736706, -22467150, 10215878, -9097177, 7563911, 11871841, -12505194, -18513325, 8464118},
+                       FieldElement{-23400612, 8348507, -14585951, -861714, -3950205, -6373419, 14325289, 8628612, 33313881, -8370517},
+               },
+               {
+                       FieldElement{-20186973, -4967935, 22367356, 5271547, -1097117, -4788838, -24805667, -10236854, -8940735, -5818269},
+                       FieldElement{-6948785, -1795212, -32625683, -16021179, 32635414, -7374245, 15989197, -12838188, 28358192, -4253904},
+                       FieldElement{-23561781, -2799059, -32351682, -1661963, -9147719, 10429267, -16637684, 4072016, -5351664, 5596589},
+               },
+               {
+                       FieldElement{-28236598, -3390048, 12312896, 6213178, 3117142, 16078565, 29266239, 2557221, 1768301, 15373193},
+                       FieldElement{-7243358, -3246960, -4593467, -7553353, -127927, -912245, -1090902, -4504991, -24660491, 3442910},
+                       FieldElement{-30210571, 5124043, 14181784, 8197961, 18964734, -11939093, 22597931, 7176455, -18585478, 13365930},
+               },
+               {
+                       FieldElement{-7877390, -1499958, 8324673, 4690079, 6261860, 890446, 24538107, -8570186, -9689599, -3031667},
+                       FieldElement{25008904, -10771599, -4305031, -9638010, 16265036, 15721635, 683793, -11823784, 15723479, -15163481},
+                       FieldElement{-9660625, 12374379, -27006999, -7026148, -7724114, -12314514, 11879682, 5400171, 519526, -1235876},
+               },
+               {
+                       FieldElement{22258397, -16332233, -7869817, 14613016, -22520255, -2950923, -20353881, 7315967, 16648397, 7605640},
+                       FieldElement{-8081308, -8464597, -8223311, 9719710, 19259459, -15348212, 23994942, -5281555, -9468848, 4763278},
+                       FieldElement{-21699244, 9220969, -15730624, 1084137, -25476107, -2852390, 31088447, -7764523, -11356529, 728112},
+               },
+               {
+                       FieldElement{26047220, -11751471, -6900323, -16521798, 24092068, 9158119, -4273545, -12555558, -29365436, -5498272},
+                       FieldElement{17510331, -322857, 5854289, 8403524, 17133918, -3112612, -28111007, 12327945, 10750447, 10014012},
+                       FieldElement{-10312768, 3936952, 9156313, -8897683, 16498692, -994647, -27481051, -666732, 3424691, 7540221},
+               },
+               {
+                       FieldElement{30322361, -6964110, 11361005, -4143317, 7433304, 4989748, -7071422, -16317219, -9244265, 15258046},
+                       FieldElement{13054562, -2779497, 19155474, 469045, -12482797, 4566042, 5631406, 2711395, 1062915, -5136345},
+                       FieldElement{-19240248, -11254599, -29509029, -7499965, -5835763, 13005411, -6066489, 12194497, 32960380, 1459310},
+               },
+       },
+       {
+               {
+                       FieldElement{19852034, 7027924, 23669353, 10020366, 8586503, -6657907, 394197, -6101885, 18638003, -11174937},
+                       FieldElement{31395534, 15098109, 26581030, 8030562, -16527914, -5007134, 9012486, -7584354, -6643087, -5442636},
+                       FieldElement{-9192165, -2347377, -1997099, 4529534, 25766844, 607986, -13222, 9677543, -32294889, -6456008},
+               },
+               {
+                       FieldElement{-2444496, -149937, 29348902, 8186665, 1873760, 12489863, -30934579, -7839692, -7852844, -8138429},
+                       FieldElement{-15236356, -15433509, 7766470, 746860, 26346930, -10221762, -27333451, 10754588, -9431476, 5203576},
+                       FieldElement{31834314, 14135496, -770007, 5159118, 20917671, -16768096, -7467973, -7337524, 31809243, 7347066},
+               },
+               {
+                       FieldElement{-9606723, -11874240, 20414459, 13033986, 13716524, -11691881, 19797970, -12211255, 15192876, -2087490},
+                       FieldElement{-12663563, -2181719, 1168162, -3804809, 26747877, -14138091, 10609330, 12694420, 33473243, -13382104},
+                       FieldElement{33184999, 11180355, 15832085, -11385430, -1633671, 225884, 15089336, -11023903, -6135662, 14480053},
+               },
+               {
+                       FieldElement{31308717, -5619998, 31030840, -1897099, 15674547, -6582883, 5496208, 13685227, 27595050, 8737275},
+                       FieldElement{-20318852, -15150239, 10933843, -16178022, 8335352, -7546022, -31008351, -12610604, 26498114, 66511},
+                       FieldElement{22644454, -8761729, -16671776, 4884562, -3105614, -13559366, 30540766, -4286747, -13327787, -7515095},
+               },
+               {
+                       FieldElement{-28017847, 9834845, 18617207, -2681312, -3401956, -13307506, 8205540, 13585437, -17127465, 15115439},
+                       FieldElement{23711543, -672915, 31206561, -8362711, 6164647, -9709987, -33535882, -1426096, 8236921, 16492939},
+                       FieldElement{-23910559, -13515526, -26299483, -4503841, 25005590, -7687270, 19574902, 10071562, 6708380, -6222424},
+               },
+               {
+                       FieldElement{2101391, -4930054, 19702731, 2367575, -15427167, 1047675, 5301017, 9328700, 29955601, -11678310},
+                       FieldElement{3096359, 9271816, -21620864, -15521844, -14847996, -7592937, -25892142, -12635595, -9917575, 6216608},
+                       FieldElement{-32615849, 338663, -25195611, 2510422, -29213566, -13820213, 24822830, -6146567, -26767480, 7525079},
+               },
+               {
+                       FieldElement{-23066649, -13985623, 16133487, -7896178, -3389565, 778788, -910336, -2782495, -19386633, 11994101},
+                       FieldElement{21691500, -13624626, -641331, -14367021, 3285881, -3483596, -25064666, 9718258, -7477437, 13381418},
+                       FieldElement{18445390, -4202236, 14979846, 11622458, -1727110, -3582980, 23111648, -6375247, 28535282, 15779576},
+               },
+               {
+                       FieldElement{30098053, 3089662, -9234387, 16662135, -21306940, 11308411, -14068454, 12021730, 9955285, -16303356},
+                       FieldElement{9734894, -14576830, -7473633, -9138735, 2060392, 11313496, -18426029, 9924399, 20194861, 13380996},
+                       FieldElement{-26378102, -7965207, -22167821, 15789297, -18055342, -6168792, -1984914, 15707771, 26342023, 10146099},
+               },
+       },
+       {
+               {
+                       FieldElement{-26016874, -219943, 21339191, -41388, 19745256, -2878700, -29637280, 2227040, 21612326, -545728},
+                       FieldElement{-13077387, 1184228, 23562814, -5970442, -20351244, -6348714, 25764461, 12243797, -20856566, 11649658},
+                       FieldElement{-10031494, 11262626, 27384172, 2271902, 26947504, -15997771, 39944, 6114064, 33514190, 2333242},
+               },
+               {
+                       FieldElement{-21433588, -12421821, 8119782, 7219913, -21830522, -9016134, -6679750, -12670638, 24350578, -13450001},
+                       FieldElement{-4116307, -11271533, -23886186, 4843615, -30088339, 690623, -31536088, -10406836, 8317860, 12352766},
+                       FieldElement{18200138, -14475911, -33087759, -2696619, -23702521, -9102511, -23552096, -2287550, 20712163, 6719373},
+               },
+               {
+                       FieldElement{26656208, 6075253, -7858556, 1886072, -28344043, 4262326, 11117530, -3763210, 26224235, -3297458},
+                       FieldElement{-17168938, -14854097, -3395676, -16369877, -19954045, 14050420, 21728352, 9493610, 18620611, -16428628},
+                       FieldElement{-13323321, 13325349, 11432106, 5964811, 18609221, 6062965, -5269471, -9725556, -30701573, -16479657},
+               },
+               {
+                       FieldElement{-23860538, -11233159, 26961357, 1640861, -32413112, -16737940, 12248509, -5240639, 13735342, 1934062},
+                       FieldElement{25089769, 6742589, 17081145, -13406266, 21909293, -16067981, -15136294, -3765346, -21277997, 5473616},
+                       FieldElement{31883677, -7961101, 1083432, -11572403, 22828471, 13290673, -7125085, 12469656, 29111212, -5451014},
+               },
+               {
+                       FieldElement{24244947, -15050407, -26262976, 2791540, -14997599, 16666678, 24367466, 6388839, -10295587, 452383},
+                       FieldElement{-25640782, -3417841, 5217916, 16224624, 19987036, -4082269, -24236251, -5915248, 15766062, 8407814},
+                       FieldElement{-20406999, 13990231, 15495425, 16395525, 5377168, 15166495, -8917023, -4388953, -8067909, 2276718},
+               },
+               {
+                       FieldElement{30157918, 12924066, -17712050, 9245753, 19895028, 3368142, -23827587, 5096219, 22740376, -7303417},
+                       FieldElement{2041139, -14256350, 7783687, 13876377, -25946985, -13352459, 24051124, 13742383, -15637599, 13295222},
+                       FieldElement{33338237, -8505733, 12532113, 7977527, 9106186, -1715251, -17720195, -4612972, -4451357, -14669444},
+               },
+               {
+                       FieldElement{-20045281, 5454097, -14346548, 6447146, 28862071, 1883651, -2469266, -4141880, 7770569, 9620597},
+                       FieldElement{23208068, 7979712, 33071466, 8149229, 1758231, -10834995, 30945528, -1694323, -33502340, -14767970},
+                       FieldElement{1439958, -16270480, -1079989, -793782, 4625402, 10647766, -5043801, 1220118, 30494170, -11440799},
+               },
+               {
+                       FieldElement{-5037580, -13028295, -2970559, -3061767, 15640974, -6701666, -26739026, 926050, -1684339, -13333647},
+                       FieldElement{13908495, -3549272, 30919928, -6273825, -21521863, 7989039, 9021034, 9078865, 3353509, 4033511},
+                       FieldElement{-29663431, -15113610, 32259991, -344482, 24295849, -12912123, 23161163, 8839127, 27485041, 7356032},
+               },
+       },
+       {
+               {
+                       FieldElement{9661027, 705443, 11980065, -5370154, -1628543, 14661173, -6346142, 2625015, 28431036, -16771834},
+                       FieldElement{-23839233, -8311415, -25945511, 7480958, -17681669, -8354183, -22545972, 14150565, 15970762, 4099461},
+                       FieldElement{29262576, 16756590, 26350592, -8793563, 8529671, -11208050, 13617293, -9937143, 11465739, 8317062},
+               },
+               {
+                       FieldElement{-25493081, -6962928, 32500200, -9419051, -23038724, -2302222, 14898637, 3848455, 20969334, -5157516},
+                       FieldElement{-20384450, -14347713, -18336405, 13884722, -33039454, 2842114, -21610826, -3649888, 11177095, 14989547},
+                       FieldElement{-24496721, -11716016, 16959896, 2278463, 12066309, 10137771, 13515641, 2581286, -28487508, 9930240},
+               },
+               {
+                       FieldElement{-17751622, -2097826, 16544300, -13009300, -15914807, -14949081, 18345767, -13403753, 16291481, -5314038},
+                       FieldElement{-33229194, 2553288, 32678213, 9875984, 8534129, 6889387, -9676774, 6957617, 4368891, 9788741},
+                       FieldElement{16660756, 7281060, -10830758, 12911820, 20108584, -8101676, -21722536, -8613148, 16250552, -11111103},
+               },
+               {
+                       FieldElement{-19765507, 2390526, -16551031, 14161980, 1905286, 6414907, 4689584, 10604807, -30190403, 4782747},
+                       FieldElement{-1354539, 14736941, -7367442, -13292886, 7710542, -14155590, -9981571, 4383045, 22546403, 437323},
+                       FieldElement{31665577, -12180464, -16186830, 1491339, -18368625, 3294682, 27343084, 2786261, -30633590, -14097016},
+               },
+               {
+                       FieldElement{-14467279, -683715, -33374107, 7448552, 19294360, 14334329, -19690631, 2355319, -19284671, -6114373},
+                       FieldElement{15121312, -15796162, 6377020, -6031361, -10798111, -12957845, 18952177, 15496498, -29380133, 11754228},
+                       FieldElement{-2637277, -13483075, 8488727, -14303896, 12728761, -1622493, 7141596, 11724556, 22761615, -10134141},
+               },
+               {
+                       FieldElement{16918416, 11729663, -18083579, 3022987, -31015732, -13339659, -28741185, -12227393, 32851222, 11717399},
+                       FieldElement{11166634, 7338049, -6722523, 4531520, -29468672, -7302055, 31474879, 3483633, -1193175, -4030831},
+                       FieldElement{-185635, 9921305, 31456609, -13536438, -12013818, 13348923, 33142652, 6546660, -19985279, -3948376},
+               },
+               {
+                       FieldElement{-32460596, 11266712, -11197107, -7899103, 31703694, 3855903, -8537131, -12833048, -30772034, -15486313},
+                       FieldElement{-18006477, 12709068, 3991746, -6479188, -21491523, -10550425, -31135347, -16049879, 10928917, 3011958},
+                       FieldElement{-6957757, -15594337, 31696059, 334240, 29576716, 14796075, -30831056, -12805180, 18008031, 10258577},
+               },
+               {
+                       FieldElement{-22448644, 15655569, 7018479, -4410003, -30314266, -1201591, -1853465, 1367120, 25127874, 6671743},
+                       FieldElement{29701166, -14373934, -10878120, 9279288, -17568, 13127210, 21382910, 11042292, 25838796, 4642684},
+                       FieldElement{-20430234, 14955537, -24126347, 8124619, -5369288, -5990470, 30468147, -13900640, 18423289, 4177476},
+               },
+       },
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/internal/edwards25519/edwards25519.go b/vendor/github.com/bytom/crypto/ed25519/internal/edwards25519/edwards25519.go
new file mode 100644 (file)
index 0000000..a8564d8
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/internal/edwards25519/edwards25519.go
@@ -0,0 +1,1767 @@
+package edwards25519
+
+// This code is a port of the public domain, “ref10” implementation of ed25519
+// from SUPERCOP.
+
+// FieldElement represents an element of the field GF(2^255 - 19).  An element
+// t, entries t[0]...t[9], represents the integer t[0]+2^26 t[1]+2^51 t[2]+2^77
+// t[3]+2^102 t[4]+...+2^230 t[9].  Bounds on each t[i] vary depending on
+// context.
+type FieldElement [10]int32
+
+var zero FieldElement
+
+func FeZero(fe *FieldElement) {
+       copy(fe[:], zero[:])
+}
+
+func FeOne(fe *FieldElement) {
+       FeZero(fe)
+       fe[0] = 1
+}
+
+func FeAdd(dst, a, b *FieldElement) {
+       dst[0] = a[0] + b[0]
+       dst[1] = a[1] + b[1]
+       dst[2] = a[2] + b[2]
+       dst[3] = a[3] + b[3]
+       dst[4] = a[4] + b[4]
+       dst[5] = a[5] + b[5]
+       dst[6] = a[6] + b[6]
+       dst[7] = a[7] + b[7]
+       dst[8] = a[8] + b[8]
+       dst[9] = a[9] + b[9]
+}
+
+func FeSub(dst, a, b *FieldElement) {
+       dst[0] = a[0] - b[0]
+       dst[1] = a[1] - b[1]
+       dst[2] = a[2] - b[2]
+       dst[3] = a[3] - b[3]
+       dst[4] = a[4] - b[4]
+       dst[5] = a[5] - b[5]
+       dst[6] = a[6] - b[6]
+       dst[7] = a[7] - b[7]
+       dst[8] = a[8] - b[8]
+       dst[9] = a[9] - b[9]
+}
+
+func FeCopy(dst, src *FieldElement) {
+       copy(dst[:], src[:])
+}
+
+// Replace (f,g) with (g,g) if b == 1;
+// replace (f,g) with (f,g) if b == 0.
+//
+// Preconditions: b in {0,1}.
+func FeCMove(f, g *FieldElement, b int32) {
+       b = -b
+       f[0] ^= b & (f[0] ^ g[0])
+       f[1] ^= b & (f[1] ^ g[1])
+       f[2] ^= b & (f[2] ^ g[2])
+       f[3] ^= b & (f[3] ^ g[3])
+       f[4] ^= b & (f[4] ^ g[4])
+       f[5] ^= b & (f[5] ^ g[5])
+       f[6] ^= b & (f[6] ^ g[6])
+       f[7] ^= b & (f[7] ^ g[7])
+       f[8] ^= b & (f[8] ^ g[8])
+       f[9] ^= b & (f[9] ^ g[9])
+}
+
+func load3(in []byte) int64 {
+       var r int64
+       r = int64(in[0])
+       r |= int64(in[1]) << 8
+       r |= int64(in[2]) << 16
+       return r
+}
+
+func load4(in []byte) int64 {
+       var r int64
+       r = int64(in[0])
+       r |= int64(in[1]) << 8
+       r |= int64(in[2]) << 16
+       r |= int64(in[3]) << 24
+       return r
+}
+
+func FeFromBytes(dst *FieldElement, src *[32]byte) {
+       h0 := load4(src[:])
+       h1 := load3(src[4:]) << 6
+       h2 := load3(src[7:]) << 5
+       h3 := load3(src[10:]) << 3
+       h4 := load3(src[13:]) << 2
+       h5 := load4(src[16:])
+       h6 := load3(src[20:]) << 7
+       h7 := load3(src[23:]) << 5
+       h8 := load3(src[26:]) << 4
+       h9 := (load3(src[29:]) & 8388607) << 2
+
+       FeCombine(dst, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
+}
+
+// FeToBytes marshals h to s.
+// Preconditions:
+//   |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+//
+// Write p=2^255-19; q=floor(h/p).
+// Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))).
+//
+// Proof:
+//   Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4.
+//   Also have |h-2^230 h9|<2^230 so |19 2^(-255)(h-2^230 h9)|<1/4.
+//
+//   Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9).
+//   Then 0<y<1.
+//
+//   Write r=h-pq.
+//   Have 0<=r<=p-1=2^255-20.
+//   Thus 0<=r+19(2^-255)r<r+19(2^-255)2^255<=2^255-1.
+//
+//   Write x=r+19(2^-255)r+y.
+//   Then 0<x<2^255 so floor(2^(-255)x) = 0 so floor(q+2^(-255)x) = q.
+//
+//   Have q+2^(-255)x = 2^(-255)(h + 19 2^(-25) h9 + 2^(-1))
+//   so floor(2^(-255)(h + 19 2^(-25) h9 + 2^(-1))) = q.
+func FeToBytes(s *[32]byte, h *FieldElement) {
+       var carry [10]int32
+
+       q := (19*h[9] + (1 << 24)) >> 25
+       q = (h[0] + q) >> 26
+       q = (h[1] + q) >> 25
+       q = (h[2] + q) >> 26
+       q = (h[3] + q) >> 25
+       q = (h[4] + q) >> 26
+       q = (h[5] + q) >> 25
+       q = (h[6] + q) >> 26
+       q = (h[7] + q) >> 25
+       q = (h[8] + q) >> 26
+       q = (h[9] + q) >> 25
+
+       // Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20.
+       h[0] += 19 * q
+       // Goal: Output h-2^255 q, which is between 0 and 2^255-20.
+
+       carry[0] = h[0] >> 26
+       h[1] += carry[0]
+       h[0] -= carry[0] << 26
+       carry[1] = h[1] >> 25
+       h[2] += carry[1]
+       h[1] -= carry[1] << 25
+       carry[2] = h[2] >> 26
+       h[3] += carry[2]
+       h[2] -= carry[2] << 26
+       carry[3] = h[3] >> 25
+       h[4] += carry[3]
+       h[3] -= carry[3] << 25
+       carry[4] = h[4] >> 26
+       h[5] += carry[4]
+       h[4] -= carry[4] << 26
+       carry[5] = h[5] >> 25
+       h[6] += carry[5]
+       h[5] -= carry[5] << 25
+       carry[6] = h[6] >> 26
+       h[7] += carry[6]
+       h[6] -= carry[6] << 26
+       carry[7] = h[7] >> 25
+       h[8] += carry[7]
+       h[7] -= carry[7] << 25
+       carry[8] = h[8] >> 26
+       h[9] += carry[8]
+       h[8] -= carry[8] << 26
+       carry[9] = h[9] >> 25
+       h[9] -= carry[9] << 25
+       // h10 = carry9
+
+       // Goal: Output h[0]+...+2^255 h10-2^255 q, which is between 0 and 2^255-20.
+       // Have h[0]+...+2^230 h[9] between 0 and 2^255-1;
+       // evidently 2^255 h10-2^255 q = 0.
+       // Goal: Output h[0]+...+2^230 h[9].
+
+       s[0] = byte(h[0] >> 0)
+       s[1] = byte(h[0] >> 8)
+       s[2] = byte(h[0] >> 16)
+       s[3] = byte((h[0] >> 24) | (h[1] << 2))
+       s[4] = byte(h[1] >> 6)
+       s[5] = byte(h[1] >> 14)
+       s[6] = byte((h[1] >> 22) | (h[2] << 3))
+       s[7] = byte(h[2] >> 5)
+       s[8] = byte(h[2] >> 13)
+       s[9] = byte((h[2] >> 21) | (h[3] << 5))
+       s[10] = byte(h[3] >> 3)
+       s[11] = byte(h[3] >> 11)
+       s[12] = byte((h[3] >> 19) | (h[4] << 6))
+       s[13] = byte(h[4] >> 2)
+       s[14] = byte(h[4] >> 10)
+       s[15] = byte(h[4] >> 18)
+       s[16] = byte(h[5] >> 0)
+       s[17] = byte(h[5] >> 8)
+       s[18] = byte(h[5] >> 16)
+       s[19] = byte((h[5] >> 24) | (h[6] << 1))
+       s[20] = byte(h[6] >> 7)
+       s[21] = byte(h[6] >> 15)
+       s[22] = byte((h[6] >> 23) | (h[7] << 3))
+       s[23] = byte(h[7] >> 5)
+       s[24] = byte(h[7] >> 13)
+       s[25] = byte((h[7] >> 21) | (h[8] << 4))
+       s[26] = byte(h[8] >> 4)
+       s[27] = byte(h[8] >> 12)
+       s[28] = byte((h[8] >> 20) | (h[9] << 6))
+       s[29] = byte(h[9] >> 2)
+       s[30] = byte(h[9] >> 10)
+       s[31] = byte(h[9] >> 18)
+}
+
+func FeIsNegative(f *FieldElement) byte {
+       var s [32]byte
+       FeToBytes(&s, f)
+       return s[0] & 1
+}
+
+func FeIsNonZero(f *FieldElement) int32 {
+       var s [32]byte
+       FeToBytes(&s, f)
+       var x uint8
+       for _, b := range s {
+               x |= b
+       }
+       x |= x >> 4
+       x |= x >> 2
+       x |= x >> 1
+       return int32(x & 1)
+}
+
+// FeNeg sets h = -f
+//
+// Preconditions:
+//    |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+//
+// Postconditions:
+//    |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+func FeNeg(h, f *FieldElement) {
+       h[0] = -f[0]
+       h[1] = -f[1]
+       h[2] = -f[2]
+       h[3] = -f[3]
+       h[4] = -f[4]
+       h[5] = -f[5]
+       h[6] = -f[6]
+       h[7] = -f[7]
+       h[8] = -f[8]
+       h[9] = -f[9]
+}
+
+func FeCombine(h *FieldElement, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) {
+       var c0, c1, c2, c3, c4, c5, c6, c7, c8, c9 int64
+
+       /*
+         |h0| <= (1.1*1.1*2^52*(1+19+19+19+19)+1.1*1.1*2^50*(38+38+38+38+38))
+           i.e. |h0| <= 1.2*2^59; narrower ranges for h2, h4, h6, h8
+         |h1| <= (1.1*1.1*2^51*(1+1+19+19+19+19+19+19+19+19))
+           i.e. |h1| <= 1.5*2^58; narrower ranges for h3, h5, h7, h9
+       */
+
+       c0 = (h0 + (1 << 25)) >> 26
+       h1 += c0
+       h0 -= c0 << 26
+       c4 = (h4 + (1 << 25)) >> 26
+       h5 += c4
+       h4 -= c4 << 26
+       /* |h0| <= 2^25 */
+       /* |h4| <= 2^25 */
+       /* |h1| <= 1.51*2^58 */
+       /* |h5| <= 1.51*2^58 */
+
+       c1 = (h1 + (1 << 24)) >> 25
+       h2 += c1
+       h1 -= c1 << 25
+       c5 = (h5 + (1 << 24)) >> 25
+       h6 += c5
+       h5 -= c5 << 25
+       /* |h1| <= 2^24; from now on fits into int32 */
+       /* |h5| <= 2^24; from now on fits into int32 */
+       /* |h2| <= 1.21*2^59 */
+       /* |h6| <= 1.21*2^59 */
+
+       c2 = (h2 + (1 << 25)) >> 26
+       h3 += c2
+       h2 -= c2 << 26
+       c6 = (h6 + (1 << 25)) >> 26
+       h7 += c6
+       h6 -= c6 << 26
+       /* |h2| <= 2^25; from now on fits into int32 unchanged */
+       /* |h6| <= 2^25; from now on fits into int32 unchanged */
+       /* |h3| <= 1.51*2^58 */
+       /* |h7| <= 1.51*2^58 */
+
+       c3 = (h3 + (1 << 24)) >> 25
+       h4 += c3
+       h3 -= c3 << 25
+       c7 = (h7 + (1 << 24)) >> 25
+       h8 += c7
+       h7 -= c7 << 25
+       /* |h3| <= 2^24; from now on fits into int32 unchanged */
+       /* |h7| <= 2^24; from now on fits into int32 unchanged */
+       /* |h4| <= 1.52*2^33 */
+       /* |h8| <= 1.52*2^33 */
+
+       c4 = (h4 + (1 << 25)) >> 26
+       h5 += c4
+       h4 -= c4 << 26
+       c8 = (h8 + (1 << 25)) >> 26
+       h9 += c8
+       h8 -= c8 << 26
+       /* |h4| <= 2^25; from now on fits into int32 unchanged */
+       /* |h8| <= 2^25; from now on fits into int32 unchanged */
+       /* |h5| <= 1.01*2^24 */
+       /* |h9| <= 1.51*2^58 */
+
+       c9 = (h9 + (1 << 24)) >> 25
+       h0 += c9 * 19
+       h9 -= c9 << 25
+       /* |h9| <= 2^24; from now on fits into int32 unchanged */
+       /* |h0| <= 1.8*2^37 */
+
+       c0 = (h0 + (1 << 25)) >> 26
+       h1 += c0
+       h0 -= c0 << 26
+       /* |h0| <= 2^25; from now on fits into int32 unchanged */
+       /* |h1| <= 1.01*2^24 */
+
+       h[0] = int32(h0)
+       h[1] = int32(h1)
+       h[2] = int32(h2)
+       h[3] = int32(h3)
+       h[4] = int32(h4)
+       h[5] = int32(h5)
+       h[6] = int32(h6)
+       h[7] = int32(h7)
+       h[8] = int32(h8)
+       h[9] = int32(h9)
+}
+
+// FeMul calculates h = f * g
+// Can overlap h with f or g.
+//
+// Preconditions:
+//    |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+//    |g| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+//
+// Postconditions:
+//    |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+//
+// Notes on implementation strategy:
+//
+// Using schoolbook multiplication.
+// Karatsuba would save a little in some cost models.
+//
+// Most multiplications by 2 and 19 are 32-bit precomputations;
+// cheaper than 64-bit postcomputations.
+//
+// There is one remaining multiplication by 19 in the carry chain;
+// one *19 precomputation can be merged into this,
+// but the resulting data flow is considerably less clean.
+//
+// There are 12 carries below.
+// 10 of them are 2-way parallelizable and vectorizable.
+// Can get away with 11 carries, but then data flow is much deeper.
+//
+// With tighter constraints on inputs, can squeeze carries into int32.
+func FeMul(h, f, g *FieldElement) {
+       f0 := int64(f[0])
+       f1 := int64(f[1])
+       f2 := int64(f[2])
+       f3 := int64(f[3])
+       f4 := int64(f[4])
+       f5 := int64(f[5])
+       f6 := int64(f[6])
+       f7 := int64(f[7])
+       f8 := int64(f[8])
+       f9 := int64(f[9])
+
+       f1_2 := int64(2 * f[1])
+       f3_2 := int64(2 * f[3])
+       f5_2 := int64(2 * f[5])
+       f7_2 := int64(2 * f[7])
+       f9_2 := int64(2 * f[9])
+
+       g0 := int64(g[0])
+       g1 := int64(g[1])
+       g2 := int64(g[2])
+       g3 := int64(g[3])
+       g4 := int64(g[4])
+       g5 := int64(g[5])
+       g6 := int64(g[6])
+       g7 := int64(g[7])
+       g8 := int64(g[8])
+       g9 := int64(g[9])
+
+       g1_19 := int64(19 * g[1]) /* 1.4*2^29 */
+       g2_19 := int64(19 * g[2]) /* 1.4*2^30; still ok */
+       g3_19 := int64(19 * g[3])
+       g4_19 := int64(19 * g[4])
+       g5_19 := int64(19 * g[5])
+       g6_19 := int64(19 * g[6])
+       g7_19 := int64(19 * g[7])
+       g8_19 := int64(19 * g[8])
+       g9_19 := int64(19 * g[9])
+
+       h0 := f0*g0 + f1_2*g9_19 + f2*g8_19 + f3_2*g7_19 + f4*g6_19 + f5_2*g5_19 + f6*g4_19 + f7_2*g3_19 + f8*g2_19 + f9_2*g1_19
+       h1 := f0*g1 + f1*g0 + f2*g9_19 + f3*g8_19 + f4*g7_19 + f5*g6_19 + f6*g5_19 + f7*g4_19 + f8*g3_19 + f9*g2_19
+       h2 := f0*g2 + f1_2*g1 + f2*g0 + f3_2*g9_19 + f4*g8_19 + f5_2*g7_19 + f6*g6_19 + f7_2*g5_19 + f8*g4_19 + f9_2*g3_19
+       h3 := f0*g3 + f1*g2 + f2*g1 + f3*g0 + f4*g9_19 + f5*g8_19 + f6*g7_19 + f7*g6_19 + f8*g5_19 + f9*g4_19
+       h4 := f0*g4 + f1_2*g3 + f2*g2 + f3_2*g1 + f4*g0 + f5_2*g9_19 + f6*g8_19 + f7_2*g7_19 + f8*g6_19 + f9_2*g5_19
+       h5 := f0*g5 + f1*g4 + f2*g3 + f3*g2 + f4*g1 + f5*g0 + f6*g9_19 + f7*g8_19 + f8*g7_19 + f9*g6_19
+       h6 := f0*g6 + f1_2*g5 + f2*g4 + f3_2*g3 + f4*g2 + f5_2*g1 + f6*g0 + f7_2*g9_19 + f8*g8_19 + f9_2*g7_19
+       h7 := f0*g7 + f1*g6 + f2*g5 + f3*g4 + f4*g3 + f5*g2 + f6*g1 + f7*g0 + f8*g9_19 + f9*g8_19
+       h8 := f0*g8 + f1_2*g7 + f2*g6 + f3_2*g5 + f4*g4 + f5_2*g3 + f6*g2 + f7_2*g1 + f8*g0 + f9_2*g9_19
+       h9 := f0*g9 + f1*g8 + f2*g7 + f3*g6 + f4*g5 + f5*g4 + f6*g3 + f7*g2 + f8*g1 + f9*g0
+
+       FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
+}
+
+func feSquare(f *FieldElement) (h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) {
+       f0 := int64(f[0])
+       f1 := int64(f[1])
+       f2 := int64(f[2])
+       f3 := int64(f[3])
+       f4 := int64(f[4])
+       f5 := int64(f[5])
+       f6 := int64(f[6])
+       f7 := int64(f[7])
+       f8 := int64(f[8])
+       f9 := int64(f[9])
+       f0_2 := int64(2 * f[0])
+       f1_2 := int64(2 * f[1])
+       f2_2 := int64(2 * f[2])
+       f3_2 := int64(2 * f[3])
+       f4_2 := int64(2 * f[4])
+       f5_2 := int64(2 * f[5])
+       f6_2 := int64(2 * f[6])
+       f7_2 := int64(2 * f[7])
+       f5_38 := 38 * f5 // 1.31*2^30
+       f6_19 := 19 * f6 // 1.31*2^30
+       f7_38 := 38 * f7 // 1.31*2^30
+       f8_19 := 19 * f8 // 1.31*2^30
+       f9_38 := 38 * f9 // 1.31*2^30
+
+       h0 = f0*f0 + f1_2*f9_38 + f2_2*f8_19 + f3_2*f7_38 + f4_2*f6_19 + f5*f5_38
+       h1 = f0_2*f1 + f2*f9_38 + f3_2*f8_19 + f4*f7_38 + f5_2*f6_19
+       h2 = f0_2*f2 + f1_2*f1 + f3_2*f9_38 + f4_2*f8_19 + f5_2*f7_38 + f6*f6_19
+       h3 = f0_2*f3 + f1_2*f2 + f4*f9_38 + f5_2*f8_19 + f6*f7_38
+       h4 = f0_2*f4 + f1_2*f3_2 + f2*f2 + f5_2*f9_38 + f6_2*f8_19 + f7*f7_38
+       h5 = f0_2*f5 + f1_2*f4 + f2_2*f3 + f6*f9_38 + f7_2*f8_19
+       h6 = f0_2*f6 + f1_2*f5_2 + f2_2*f4 + f3_2*f3 + f7_2*f9_38 + f8*f8_19
+       h7 = f0_2*f7 + f1_2*f6 + f2_2*f5 + f3_2*f4 + f8*f9_38
+       h8 = f0_2*f8 + f1_2*f7_2 + f2_2*f6 + f3_2*f5_2 + f4*f4 + f9*f9_38
+       h9 = f0_2*f9 + f1_2*f8 + f2_2*f7 + f3_2*f6 + f4_2*f5
+
+       return
+}
+
+// FeSquare calculates h = f*f. Can overlap h with f.
+//
+// Preconditions:
+//    |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+//
+// Postconditions:
+//    |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+func FeSquare(h, f *FieldElement) {
+       h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f)
+       FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
+}
+
+// FeSquare2 sets h = 2 * f * f
+//
+// Can overlap h with f.
+//
+// Preconditions:
+//    |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
+//
+// Postconditions:
+//    |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc.
+// See fe_mul.c for discussion of implementation strategy.
+func FeSquare2(h, f *FieldElement) {
+       h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f)
+
+       h0 += h0
+       h1 += h1
+       h2 += h2
+       h3 += h3
+       h4 += h4
+       h5 += h5
+       h6 += h6
+       h7 += h7
+       h8 += h8
+       h9 += h9
+
+       FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
+}
+
+func FeInvert(out, z *FieldElement) {
+       var t0, t1, t2, t3 FieldElement
+       var i int
+
+       FeSquare(&t0, z)        // 2^1
+       FeSquare(&t1, &t0)      // 2^2
+       for i = 1; i < 2; i++ { // 2^3
+               FeSquare(&t1, &t1)
+       }
+       FeMul(&t1, z, &t1)      // 2^3 + 2^0
+       FeMul(&t0, &t0, &t1)    // 2^3 + 2^1 + 2^0
+       FeSquare(&t2, &t0)      // 2^4 + 2^2 + 2^1
+       FeMul(&t1, &t1, &t2)    // 2^4 + 2^3 + 2^2 + 2^1 + 2^0
+       FeSquare(&t2, &t1)      // 5,4,3,2,1
+       for i = 1; i < 5; i++ { // 9,8,7,6,5
+               FeSquare(&t2, &t2)
+       }
+       FeMul(&t1, &t2, &t1)     // 9,8,7,6,5,4,3,2,1,0
+       FeSquare(&t2, &t1)       // 10..1
+       for i = 1; i < 10; i++ { // 19..10
+               FeSquare(&t2, &t2)
+       }
+       FeMul(&t2, &t2, &t1)     // 19..0
+       FeSquare(&t3, &t2)       // 20..1
+       for i = 1; i < 20; i++ { // 39..20
+               FeSquare(&t3, &t3)
+       }
+       FeMul(&t2, &t3, &t2)     // 39..0
+       FeSquare(&t2, &t2)       // 40..1
+       for i = 1; i < 10; i++ { // 49..10
+               FeSquare(&t2, &t2)
+       }
+       FeMul(&t1, &t2, &t1)     // 49..0
+       FeSquare(&t2, &t1)       // 50..1
+       for i = 1; i < 50; i++ { // 99..50
+               FeSquare(&t2, &t2)
+       }
+       FeMul(&t2, &t2, &t1)      // 99..0
+       FeSquare(&t3, &t2)        // 100..1
+       for i = 1; i < 100; i++ { // 199..100
+               FeSquare(&t3, &t3)
+       }
+       FeMul(&t2, &t3, &t2)     // 199..0
+       FeSquare(&t2, &t2)       // 200..1
+       for i = 1; i < 50; i++ { // 249..50
+               FeSquare(&t2, &t2)
+       }
+       FeMul(&t1, &t2, &t1)    // 249..0
+       FeSquare(&t1, &t1)      // 250..1
+       for i = 1; i < 5; i++ { // 254..5
+               FeSquare(&t1, &t1)
+       }
+       FeMul(out, &t1, &t0) // 254..5,3,1,0
+}
+
+func fePow22523(out, z *FieldElement) {
+       var t0, t1, t2 FieldElement
+       var i int
+
+       FeSquare(&t0, z)
+       for i = 1; i < 1; i++ {
+               FeSquare(&t0, &t0)
+       }
+       FeSquare(&t1, &t0)
+       for i = 1; i < 2; i++ {
+               FeSquare(&t1, &t1)
+       }
+       FeMul(&t1, z, &t1)
+       FeMul(&t0, &t0, &t1)
+       FeSquare(&t0, &t0)
+       for i = 1; i < 1; i++ {
+               FeSquare(&t0, &t0)
+       }
+       FeMul(&t0, &t1, &t0)
+       FeSquare(&t1, &t0)
+       for i = 1; i < 5; i++ {
+               FeSquare(&t1, &t1)
+       }
+       FeMul(&t0, &t1, &t0)
+       FeSquare(&t1, &t0)
+       for i = 1; i < 10; i++ {
+               FeSquare(&t1, &t1)
+       }
+       FeMul(&t1, &t1, &t0)
+       FeSquare(&t2, &t1)
+       for i = 1; i < 20; i++ {
+               FeSquare(&t2, &t2)
+       }
+       FeMul(&t1, &t2, &t1)
+       FeSquare(&t1, &t1)
+       for i = 1; i < 10; i++ {
+               FeSquare(&t1, &t1)
+       }
+       FeMul(&t0, &t1, &t0)
+       FeSquare(&t1, &t0)
+       for i = 1; i < 50; i++ {
+               FeSquare(&t1, &t1)
+       }
+       FeMul(&t1, &t1, &t0)
+       FeSquare(&t2, &t1)
+       for i = 1; i < 100; i++ {
+               FeSquare(&t2, &t2)
+       }
+       FeMul(&t1, &t2, &t1)
+       FeSquare(&t1, &t1)
+       for i = 1; i < 50; i++ {
+               FeSquare(&t1, &t1)
+       }
+       FeMul(&t0, &t1, &t0)
+       FeSquare(&t0, &t0)
+       for i = 1; i < 2; i++ {
+               FeSquare(&t0, &t0)
+       }
+       FeMul(out, &t0, z)
+}
+
+// Group elements are members of the elliptic curve -x^2 + y^2 = 1 + d * x^2 *
+// y^2 where d = -121665/121666.
+//
+// Several representations are used:
+//   ProjectiveGroupElement: (X:Y:Z) satisfying x=X/Z, y=Y/Z
+//   ExtendedGroupElement: (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT
+//   CompletedGroupElement: ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T
+//   PreComputedGroupElement: (y+x,y-x,2dxy)
+
+type ProjectiveGroupElement struct {
+       X, Y, Z FieldElement
+}
+
+type ExtendedGroupElement struct {
+       X, Y, Z, T FieldElement
+}
+
+type CompletedGroupElement struct {
+       X, Y, Z, T FieldElement
+}
+
+type PreComputedGroupElement struct {
+       yPlusX, yMinusX, xy2d FieldElement
+}
+
+type CachedGroupElement struct {
+       yPlusX, yMinusX, Z, T2d FieldElement
+}
+
+func (p *ProjectiveGroupElement) Zero() {
+       FeZero(&p.X)
+       FeOne(&p.Y)
+       FeOne(&p.Z)
+}
+
+func (p *ProjectiveGroupElement) Double(r *CompletedGroupElement) {
+       var t0 FieldElement
+
+       FeSquare(&r.X, &p.X)
+       FeSquare(&r.Z, &p.Y)
+       FeSquare2(&r.T, &p.Z)
+       FeAdd(&r.Y, &p.X, &p.Y)
+       FeSquare(&t0, &r.Y)
+       FeAdd(&r.Y, &r.Z, &r.X)
+       FeSub(&r.Z, &r.Z, &r.X)
+       FeSub(&r.X, &t0, &r.Y)
+       FeSub(&r.T, &r.T, &r.Z)
+}
+
+func (p *ProjectiveGroupElement) ToBytes(s *[32]byte) {
+       var recip, x, y FieldElement
+
+       FeInvert(&recip, &p.Z)
+       FeMul(&x, &p.X, &recip)
+       FeMul(&y, &p.Y, &recip)
+       FeToBytes(s, &y)
+       s[31] ^= FeIsNegative(&x) << 7
+}
+
+func (p *ExtendedGroupElement) Zero() {
+       FeZero(&p.X)
+       FeOne(&p.Y)
+       FeOne(&p.Z)
+       FeZero(&p.T)
+}
+
+func (p *ExtendedGroupElement) Double(r *CompletedGroupElement) {
+       var q ProjectiveGroupElement
+       p.ToProjective(&q)
+       q.Double(r)
+}
+
+func (p *ExtendedGroupElement) ToCached(r *CachedGroupElement) {
+       FeAdd(&r.yPlusX, &p.Y, &p.X)
+       FeSub(&r.yMinusX, &p.Y, &p.X)
+       FeCopy(&r.Z, &p.Z)
+       FeMul(&r.T2d, &p.T, &d2)
+}
+
+func (p *ExtendedGroupElement) ToProjective(r *ProjectiveGroupElement) {
+       FeCopy(&r.X, &p.X)
+       FeCopy(&r.Y, &p.Y)
+       FeCopy(&r.Z, &p.Z)
+}
+
+func (p *ExtendedGroupElement) ToBytes(s *[32]byte) {
+       var recip, x, y FieldElement
+
+       FeInvert(&recip, &p.Z)
+       FeMul(&x, &p.X, &recip)
+       FeMul(&y, &p.Y, &recip)
+       FeToBytes(s, &y)
+       s[31] ^= FeIsNegative(&x) << 7
+}
+
+func (p *ExtendedGroupElement) FromBytes(s *[32]byte) bool {
+       var u, v, v3, vxx, check FieldElement
+
+       FeFromBytes(&p.Y, s)
+       FeOne(&p.Z)
+       FeSquare(&u, &p.Y)
+       FeMul(&v, &u, &d)
+       FeSub(&u, &u, &p.Z) // y = y^2-1
+       FeAdd(&v, &v, &p.Z) // v = dy^2+1
+
+       FeSquare(&v3, &v)
+       FeMul(&v3, &v3, &v) // v3 = v^3
+       FeSquare(&p.X, &v3)
+       FeMul(&p.X, &p.X, &v)
+       FeMul(&p.X, &p.X, &u) // x = uv^7
+
+       fePow22523(&p.X, &p.X) // x = (uv^7)^((q-5)/8)
+       FeMul(&p.X, &p.X, &v3)
+       FeMul(&p.X, &p.X, &u) // x = uv^3(uv^7)^((q-5)/8)
+
+       var tmpX, tmp2 [32]byte
+
+       FeSquare(&vxx, &p.X)
+       FeMul(&vxx, &vxx, &v)
+       FeSub(&check, &vxx, &u) // vx^2-u
+       if FeIsNonZero(&check) == 1 {
+               FeAdd(&check, &vxx, &u) // vx^2+u
+               if FeIsNonZero(&check) == 1 {
+                       return false
+               }
+               FeMul(&p.X, &p.X, &SqrtM1)
+
+               FeToBytes(&tmpX, &p.X)
+               for i, v := range tmpX {
+                       tmp2[31-i] = v
+               }
+       }
+
+       if FeIsNegative(&p.X) != (s[31] >> 7) {
+               FeNeg(&p.X, &p.X)
+       }
+
+       FeMul(&p.T, &p.X, &p.Y)
+       return true
+}
+
+func (p *CompletedGroupElement) ToProjective(r *ProjectiveGroupElement) {
+       FeMul(&r.X, &p.X, &p.T)
+       FeMul(&r.Y, &p.Y, &p.Z)
+       FeMul(&r.Z, &p.Z, &p.T)
+}
+
+func (p *CompletedGroupElement) ToExtended(r *ExtendedGroupElement) {
+       FeMul(&r.X, &p.X, &p.T)
+       FeMul(&r.Y, &p.Y, &p.Z)
+       FeMul(&r.Z, &p.Z, &p.T)
+       FeMul(&r.T, &p.X, &p.Y)
+}
+
+func (p *PreComputedGroupElement) Zero() {
+       FeOne(&p.yPlusX)
+       FeOne(&p.yMinusX)
+       FeZero(&p.xy2d)
+}
+
+func geAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) {
+       var t0 FieldElement
+
+       FeAdd(&r.X, &p.Y, &p.X)
+       FeSub(&r.Y, &p.Y, &p.X)
+       FeMul(&r.Z, &r.X, &q.yPlusX)
+       FeMul(&r.Y, &r.Y, &q.yMinusX)
+       FeMul(&r.T, &q.T2d, &p.T)
+       FeMul(&r.X, &p.Z, &q.Z)
+       FeAdd(&t0, &r.X, &r.X)
+       FeSub(&r.X, &r.Z, &r.Y)
+       FeAdd(&r.Y, &r.Z, &r.Y)
+       FeAdd(&r.Z, &t0, &r.T)
+       FeSub(&r.T, &t0, &r.T)
+}
+
+func geSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) {
+       var t0 FieldElement
+
+       FeAdd(&r.X, &p.Y, &p.X)
+       FeSub(&r.Y, &p.Y, &p.X)
+       FeMul(&r.Z, &r.X, &q.yMinusX)
+       FeMul(&r.Y, &r.Y, &q.yPlusX)
+       FeMul(&r.T, &q.T2d, &p.T)
+       FeMul(&r.X, &p.Z, &q.Z)
+       FeAdd(&t0, &r.X, &r.X)
+       FeSub(&r.X, &r.Z, &r.Y)
+       FeAdd(&r.Y, &r.Z, &r.Y)
+       FeSub(&r.Z, &t0, &r.T)
+       FeAdd(&r.T, &t0, &r.T)
+}
+
+func geMixedAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) {
+       var t0 FieldElement
+
+       FeAdd(&r.X, &p.Y, &p.X)
+       FeSub(&r.Y, &p.Y, &p.X)
+       FeMul(&r.Z, &r.X, &q.yPlusX)
+       FeMul(&r.Y, &r.Y, &q.yMinusX)
+       FeMul(&r.T, &q.xy2d, &p.T)
+       FeAdd(&t0, &p.Z, &p.Z)
+       FeSub(&r.X, &r.Z, &r.Y)
+       FeAdd(&r.Y, &r.Z, &r.Y)
+       FeAdd(&r.Z, &t0, &r.T)
+       FeSub(&r.T, &t0, &r.T)
+}
+
+func geMixedSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) {
+       var t0 FieldElement
+
+       FeAdd(&r.X, &p.Y, &p.X)
+       FeSub(&r.Y, &p.Y, &p.X)
+       FeMul(&r.Z, &r.X, &q.yMinusX)
+       FeMul(&r.Y, &r.Y, &q.yPlusX)
+       FeMul(&r.T, &q.xy2d, &p.T)
+       FeAdd(&t0, &p.Z, &p.Z)
+       FeSub(&r.X, &r.Z, &r.Y)
+       FeAdd(&r.Y, &r.Z, &r.Y)
+       FeSub(&r.Z, &t0, &r.T)
+       FeAdd(&r.T, &t0, &r.T)
+}
+
+func slide(r *[256]int8, a *[32]byte) {
+       for i := range r {
+               r[i] = int8(1 & (a[i>>3] >> uint(i&7)))
+       }
+
+       for i := range r {
+               if r[i] != 0 {
+                       for b := 1; b <= 6 && i+b < 256; b++ {
+                               if r[i+b] != 0 {
+                                       if r[i]+(r[i+b]<<uint(b)) <= 15 {
+                                               r[i] += r[i+b] << uint(b)
+                                               r[i+b] = 0
+                                       } else if r[i]-(r[i+b]<<uint(b)) >= -15 {
+                                               r[i] -= r[i+b] << uint(b)
+                                               for k := i + b; k < 256; k++ {
+                                                       if r[k] == 0 {
+                                                               r[k] = 1
+                                                               break
+                                                       }
+                                                       r[k] = 0
+                                               }
+                                       } else {
+                                               break
+                                       }
+                               }
+                       }
+               }
+       }
+}
+
+// GeDoubleScalarMultVartime sets r = a*A + b*B
+// where a = a[0]+256*a[1]+...+256^31 a[31].
+// and b = b[0]+256*b[1]+...+256^31 b[31].
+// B is the Ed25519 base point (x,4/5) with x positive.
+func GeDoubleScalarMultVartime(r *ProjectiveGroupElement, a *[32]byte, A *ExtendedGroupElement, b *[32]byte) {
+       var aSlide, bSlide [256]int8
+       var Ai [8]CachedGroupElement // A,3A,5A,7A,9A,11A,13A,15A
+       var t CompletedGroupElement
+       var u, A2 ExtendedGroupElement
+       var i int
+
+       slide(&aSlide, a)
+       slide(&bSlide, b)
+
+       A.ToCached(&Ai[0])
+       A.Double(&t)
+       t.ToExtended(&A2)
+
+       for i := 0; i < 7; i++ {
+               geAdd(&t, &A2, &Ai[i])
+               t.ToExtended(&u)
+               u.ToCached(&Ai[i+1])
+       }
+
+       r.Zero()
+
+       for i = 255; i >= 0; i-- {
+               if aSlide[i] != 0 || bSlide[i] != 0 {
+                       break
+               }
+       }
+
+       for ; i >= 0; i-- {
+               r.Double(&t)
+
+               if aSlide[i] > 0 {
+                       t.ToExtended(&u)
+                       geAdd(&t, &u, &Ai[aSlide[i]/2])
+               } else if aSlide[i] < 0 {
+                       t.ToExtended(&u)
+                       geSub(&t, &u, &Ai[(-aSlide[i])/2])
+               }
+
+               if bSlide[i] > 0 {
+                       t.ToExtended(&u)
+                       geMixedAdd(&t, &u, &bi[bSlide[i]/2])
+               } else if bSlide[i] < 0 {
+                       t.ToExtended(&u)
+                       geMixedSub(&t, &u, &bi[(-bSlide[i])/2])
+               }
+
+               t.ToProjective(r)
+       }
+}
+
+// equal returns 1 if b == c and 0 otherwise, assuming that b and c are
+// non-negative.
+func equal(b, c int32) int32 {
+       x := uint32(b ^ c)
+       x--
+       return int32(x >> 31)
+}
+
+// negative returns 1 if b < 0 and 0 otherwise.
+func negative(b int32) int32 {
+       return (b >> 31) & 1
+}
+
+func PreComputedGroupElementCMove(t, u *PreComputedGroupElement, b int32) {
+       FeCMove(&t.yPlusX, &u.yPlusX, b)
+       FeCMove(&t.yMinusX, &u.yMinusX, b)
+       FeCMove(&t.xy2d, &u.xy2d, b)
+}
+
+func selectPoint(t *PreComputedGroupElement, pos int32, b int32) {
+       var minusT PreComputedGroupElement
+       bNegative := negative(b)
+       bAbs := b - (((-bNegative) & b) << 1)
+
+       t.Zero()
+       for i := int32(0); i < 8; i++ {
+               PreComputedGroupElementCMove(t, &base[pos][i], equal(bAbs, i+1))
+       }
+       FeCopy(&minusT.yPlusX, &t.yMinusX)
+       FeCopy(&minusT.yMinusX, &t.yPlusX)
+       FeNeg(&minusT.xy2d, &t.xy2d)
+       PreComputedGroupElementCMove(t, &minusT, bNegative)
+}
+
+// GeScalarMultBase computes h = a*B, where
+//   a = a[0]+256*a[1]+...+256^31 a[31]
+//   B is the Ed25519 base point (x,4/5) with x positive.
+//
+// Preconditions:
+//   a[31] <= 127
+func GeScalarMultBase(h *ExtendedGroupElement, a *[32]byte) {
+       var e [64]int8
+
+       for i, v := range a {
+               e[2*i] = int8(v & 15)
+               e[2*i+1] = int8((v >> 4) & 15)
+       }
+
+       // each e[i] is between 0 and 15 and e[63] is between 0 and 7.
+
+       carry := int8(0)
+       for i := 0; i < 63; i++ {
+               e[i] += carry
+               carry = (e[i] + 8) >> 4
+               e[i] -= carry << 4
+       }
+       e[63] += carry
+       // each e[i] is between -8 and 8.
+
+       h.Zero()
+       var t PreComputedGroupElement
+       var r CompletedGroupElement
+       for i := int32(1); i < 64; i += 2 {
+               selectPoint(&t, i/2, int32(e[i]))
+               geMixedAdd(&r, h, &t)
+               r.ToExtended(h)
+       }
+
+       var s ProjectiveGroupElement
+
+       h.Double(&r)
+       r.ToProjective(&s)
+       s.Double(&r)
+       r.ToProjective(&s)
+       s.Double(&r)
+       r.ToProjective(&s)
+       s.Double(&r)
+       r.ToExtended(h)
+
+       for i := int32(0); i < 64; i += 2 {
+               selectPoint(&t, i/2, int32(e[i]))
+               geMixedAdd(&r, h, &t)
+               r.ToExtended(h)
+       }
+}
+
+// The scalars are GF(2^252 + 27742317777372353535851937790883648493).
+
+// Input:
+//   a[0]+256*a[1]+...+256^31*a[31] = a
+//   b[0]+256*b[1]+...+256^31*b[31] = b
+//   c[0]+256*c[1]+...+256^31*c[31] = c
+//
+// Output:
+//   s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l
+//   where l = 2^252 + 27742317777372353535851937790883648493.
+func ScMulAdd(s, a, b, c *[32]byte) {
+       a0 := 2097151 & load3(a[:])
+       a1 := 2097151 & (load4(a[2:]) >> 5)
+       a2 := 2097151 & (load3(a[5:]) >> 2)
+       a3 := 2097151 & (load4(a[7:]) >> 7)
+       a4 := 2097151 & (load4(a[10:]) >> 4)
+       a5 := 2097151 & (load3(a[13:]) >> 1)
+       a6 := 2097151 & (load4(a[15:]) >> 6)
+       a7 := 2097151 & (load3(a[18:]) >> 3)
+       a8 := 2097151 & load3(a[21:])
+       a9 := 2097151 & (load4(a[23:]) >> 5)
+       a10 := 2097151 & (load3(a[26:]) >> 2)
+       a11 := (load4(a[28:]) >> 7)
+       b0 := 2097151 & load3(b[:])
+       b1 := 2097151 & (load4(b[2:]) >> 5)
+       b2 := 2097151 & (load3(b[5:]) >> 2)
+       b3 := 2097151 & (load4(b[7:]) >> 7)
+       b4 := 2097151 & (load4(b[10:]) >> 4)
+       b5 := 2097151 & (load3(b[13:]) >> 1)
+       b6 := 2097151 & (load4(b[15:]) >> 6)
+       b7 := 2097151 & (load3(b[18:]) >> 3)
+       b8 := 2097151 & load3(b[21:])
+       b9 := 2097151 & (load4(b[23:]) >> 5)
+       b10 := 2097151 & (load3(b[26:]) >> 2)
+       b11 := (load4(b[28:]) >> 7)
+       c0 := 2097151 & load3(c[:])
+       c1 := 2097151 & (load4(c[2:]) >> 5)
+       c2 := 2097151 & (load3(c[5:]) >> 2)
+       c3 := 2097151 & (load4(c[7:]) >> 7)
+       c4 := 2097151 & (load4(c[10:]) >> 4)
+       c5 := 2097151 & (load3(c[13:]) >> 1)
+       c6 := 2097151 & (load4(c[15:]) >> 6)
+       c7 := 2097151 & (load3(c[18:]) >> 3)
+       c8 := 2097151 & load3(c[21:])
+       c9 := 2097151 & (load4(c[23:]) >> 5)
+       c10 := 2097151 & (load3(c[26:]) >> 2)
+       c11 := (load4(c[28:]) >> 7)
+       var carry [23]int64
+
+       s0 := c0 + a0*b0
+       s1 := c1 + a0*b1 + a1*b0
+       s2 := c2 + a0*b2 + a1*b1 + a2*b0
+       s3 := c3 + a0*b3 + a1*b2 + a2*b1 + a3*b0
+       s4 := c4 + a0*b4 + a1*b3 + a2*b2 + a3*b1 + a4*b0
+       s5 := c5 + a0*b5 + a1*b4 + a2*b3 + a3*b2 + a4*b1 + a5*b0
+       s6 := c6 + a0*b6 + a1*b5 + a2*b4 + a3*b3 + a4*b2 + a5*b1 + a6*b0
+       s7 := c7 + a0*b7 + a1*b6 + a2*b5 + a3*b4 + a4*b3 + a5*b2 + a6*b1 + a7*b0
+       s8 := c8 + a0*b8 + a1*b7 + a2*b6 + a3*b5 + a4*b4 + a5*b3 + a6*b2 + a7*b1 + a8*b0
+       s9 := c9 + a0*b9 + a1*b8 + a2*b7 + a3*b6 + a4*b5 + a5*b4 + a6*b3 + a7*b2 + a8*b1 + a9*b0
+       s10 := c10 + a0*b10 + a1*b9 + a2*b8 + a3*b7 + a4*b6 + a5*b5 + a6*b4 + a7*b3 + a8*b2 + a9*b1 + a10*b0
+       s11 := c11 + a0*b11 + a1*b10 + a2*b9 + a3*b8 + a4*b7 + a5*b6 + a6*b5 + a7*b4 + a8*b3 + a9*b2 + a10*b1 + a11*b0
+       s12 := a1*b11 + a2*b10 + a3*b9 + a4*b8 + a5*b7 + a6*b6 + a7*b5 + a8*b4 + a9*b3 + a10*b2 + a11*b1
+       s13 := a2*b11 + a3*b10 + a4*b9 + a5*b8 + a6*b7 + a7*b6 + a8*b5 + a9*b4 + a10*b3 + a11*b2
+       s14 := a3*b11 + a4*b10 + a5*b9 + a6*b8 + a7*b7 + a8*b6 + a9*b5 + a10*b4 + a11*b3
+       s15 := a4*b11 + a5*b10 + a6*b9 + a7*b8 + a8*b7 + a9*b6 + a10*b5 + a11*b4
+       s16 := a5*b11 + a6*b10 + a7*b9 + a8*b8 + a9*b7 + a10*b6 + a11*b5
+       s17 := a6*b11 + a7*b10 + a8*b9 + a9*b8 + a10*b7 + a11*b6
+       s18 := a7*b11 + a8*b10 + a9*b9 + a10*b8 + a11*b7
+       s19 := a8*b11 + a9*b10 + a10*b9 + a11*b8
+       s20 := a9*b11 + a10*b10 + a11*b9
+       s21 := a10*b11 + a11*b10
+       s22 := a11 * b11
+       s23 := int64(0)
+
+       carry[0] = (s0 + (1 << 20)) >> 21
+       s1 += carry[0]
+       s0 -= carry[0] << 21
+       carry[2] = (s2 + (1 << 20)) >> 21
+       s3 += carry[2]
+       s2 -= carry[2] << 21
+       carry[4] = (s4 + (1 << 20)) >> 21
+       s5 += carry[4]
+       s4 -= carry[4] << 21
+       carry[6] = (s6 + (1 << 20)) >> 21
+       s7 += carry[6]
+       s6 -= carry[6] << 21
+       carry[8] = (s8 + (1 << 20)) >> 21
+       s9 += carry[8]
+       s8 -= carry[8] << 21
+       carry[10] = (s10 + (1 << 20)) >> 21
+       s11 += carry[10]
+       s10 -= carry[10] << 21
+       carry[12] = (s12 + (1 << 20)) >> 21
+       s13 += carry[12]
+       s12 -= carry[12] << 21
+       carry[14] = (s14 + (1 << 20)) >> 21
+       s15 += carry[14]
+       s14 -= carry[14] << 21
+       carry[16] = (s16 + (1 << 20)) >> 21
+       s17 += carry[16]
+       s16 -= carry[16] << 21
+       carry[18] = (s18 + (1 << 20)) >> 21
+       s19 += carry[18]
+       s18 -= carry[18] << 21
+       carry[20] = (s20 + (1 << 20)) >> 21
+       s21 += carry[20]
+       s20 -= carry[20] << 21
+       carry[22] = (s22 + (1 << 20)) >> 21
+       s23 += carry[22]
+       s22 -= carry[22] << 21
+
+       carry[1] = (s1 + (1 << 20)) >> 21
+       s2 += carry[1]
+       s1 -= carry[1] << 21
+       carry[3] = (s3 + (1 << 20)) >> 21
+       s4 += carry[3]
+       s3 -= carry[3] << 21
+       carry[5] = (s5 + (1 << 20)) >> 21
+       s6 += carry[5]
+       s5 -= carry[5] << 21
+       carry[7] = (s7 + (1 << 20)) >> 21
+       s8 += carry[7]
+       s7 -= carry[7] << 21
+       carry[9] = (s9 + (1 << 20)) >> 21
+       s10 += carry[9]
+       s9 -= carry[9] << 21
+       carry[11] = (s11 + (1 << 20)) >> 21
+       s12 += carry[11]
+       s11 -= carry[11] << 21
+       carry[13] = (s13 + (1 << 20)) >> 21
+       s14 += carry[13]
+       s13 -= carry[13] << 21
+       carry[15] = (s15 + (1 << 20)) >> 21
+       s16 += carry[15]
+       s15 -= carry[15] << 21
+       carry[17] = (s17 + (1 << 20)) >> 21
+       s18 += carry[17]
+       s17 -= carry[17] << 21
+       carry[19] = (s19 + (1 << 20)) >> 21
+       s20 += carry[19]
+       s19 -= carry[19] << 21
+       carry[21] = (s21 + (1 << 20)) >> 21
+       s22 += carry[21]
+       s21 -= carry[21] << 21
+
+       s11 += s23 * 666643
+       s12 += s23 * 470296
+       s13 += s23 * 654183
+       s14 -= s23 * 997805
+       s15 += s23 * 136657
+       s16 -= s23 * 683901
+       s23 = 0
+
+       s10 += s22 * 666643
+       s11 += s22 * 470296
+       s12 += s22 * 654183
+       s13 -= s22 * 997805
+       s14 += s22 * 136657
+       s15 -= s22 * 683901
+       s22 = 0
+
+       s9 += s21 * 666643
+       s10 += s21 * 470296
+       s11 += s21 * 654183
+       s12 -= s21 * 997805
+       s13 += s21 * 136657
+       s14 -= s21 * 683901
+       s21 = 0
+
+       s8 += s20 * 666643
+       s9 += s20 * 470296
+       s10 += s20 * 654183
+       s11 -= s20 * 997805
+       s12 += s20 * 136657
+       s13 -= s20 * 683901
+       s20 = 0
+
+       s7 += s19 * 666643
+       s8 += s19 * 470296
+       s9 += s19 * 654183
+       s10 -= s19 * 997805
+       s11 += s19 * 136657
+       s12 -= s19 * 683901
+       s19 = 0
+
+       s6 += s18 * 666643
+       s7 += s18 * 470296
+       s8 += s18 * 654183
+       s9 -= s18 * 997805
+       s10 += s18 * 136657
+       s11 -= s18 * 683901
+       s18 = 0
+
+       carry[6] = (s6 + (1 << 20)) >> 21
+       s7 += carry[6]
+       s6 -= carry[6] << 21
+       carry[8] = (s8 + (1 << 20)) >> 21
+       s9 += carry[8]
+       s8 -= carry[8] << 21
+       carry[10] = (s10 + (1 << 20)) >> 21
+       s11 += carry[10]
+       s10 -= carry[10] << 21
+       carry[12] = (s12 + (1 << 20)) >> 21
+       s13 += carry[12]
+       s12 -= carry[12] << 21
+       carry[14] = (s14 + (1 << 20)) >> 21
+       s15 += carry[14]
+       s14 -= carry[14] << 21
+       carry[16] = (s16 + (1 << 20)) >> 21
+       s17 += carry[16]
+       s16 -= carry[16] << 21
+
+       carry[7] = (s7 + (1 << 20)) >> 21
+       s8 += carry[7]
+       s7 -= carry[7] << 21
+       carry[9] = (s9 + (1 << 20)) >> 21
+       s10 += carry[9]
+       s9 -= carry[9] << 21
+       carry[11] = (s11 + (1 << 20)) >> 21
+       s12 += carry[11]
+       s11 -= carry[11] << 21
+       carry[13] = (s13 + (1 << 20)) >> 21
+       s14 += carry[13]
+       s13 -= carry[13] << 21
+       carry[15] = (s15 + (1 << 20)) >> 21
+       s16 += carry[15]
+       s15 -= carry[15] << 21
+
+       s5 += s17 * 666643
+       s6 += s17 * 470296
+       s7 += s17 * 654183
+       s8 -= s17 * 997805
+       s9 += s17 * 136657
+       s10 -= s17 * 683901
+       s17 = 0
+
+       s4 += s16 * 666643
+       s5 += s16 * 470296
+       s6 += s16 * 654183
+       s7 -= s16 * 997805
+       s8 += s16 * 136657
+       s9 -= s16 * 683901
+       s16 = 0
+
+       s3 += s15 * 666643
+       s4 += s15 * 470296
+       s5 += s15 * 654183
+       s6 -= s15 * 997805
+       s7 += s15 * 136657
+       s8 -= s15 * 683901
+       s15 = 0
+
+       s2 += s14 * 666643
+       s3 += s14 * 470296
+       s4 += s14 * 654183
+       s5 -= s14 * 997805
+       s6 += s14 * 136657
+       s7 -= s14 * 683901
+       s14 = 0
+
+       s1 += s13 * 666643
+       s2 += s13 * 470296
+       s3 += s13 * 654183
+       s4 -= s13 * 997805
+       s5 += s13 * 136657
+       s6 -= s13 * 683901
+       s13 = 0
+
+       s0 += s12 * 666643
+       s1 += s12 * 470296
+       s2 += s12 * 654183
+       s3 -= s12 * 997805
+       s4 += s12 * 136657
+       s5 -= s12 * 683901
+       s12 = 0
+
+       carry[0] = (s0 + (1 << 20)) >> 21
+       s1 += carry[0]
+       s0 -= carry[0] << 21
+       carry[2] = (s2 + (1 << 20)) >> 21
+       s3 += carry[2]
+       s2 -= carry[2] << 21
+       carry[4] = (s4 + (1 << 20)) >> 21
+       s5 += carry[4]
+       s4 -= carry[4] << 21
+       carry[6] = (s6 + (1 << 20)) >> 21
+       s7 += carry[6]
+       s6 -= carry[6] << 21
+       carry[8] = (s8 + (1 << 20)) >> 21
+       s9 += carry[8]
+       s8 -= carry[8] << 21
+       carry[10] = (s10 + (1 << 20)) >> 21
+       s11 += carry[10]
+       s10 -= carry[10] << 21
+
+       carry[1] = (s1 + (1 << 20)) >> 21
+       s2 += carry[1]
+       s1 -= carry[1] << 21
+       carry[3] = (s3 + (1 << 20)) >> 21
+       s4 += carry[3]
+       s3 -= carry[3] << 21
+       carry[5] = (s5 + (1 << 20)) >> 21
+       s6 += carry[5]
+       s5 -= carry[5] << 21
+       carry[7] = (s7 + (1 << 20)) >> 21
+       s8 += carry[7]
+       s7 -= carry[7] << 21
+       carry[9] = (s9 + (1 << 20)) >> 21
+       s10 += carry[9]
+       s9 -= carry[9] << 21
+       carry[11] = (s11 + (1 << 20)) >> 21
+       s12 += carry[11]
+       s11 -= carry[11] << 21
+
+       s0 += s12 * 666643
+       s1 += s12 * 470296
+       s2 += s12 * 654183
+       s3 -= s12 * 997805
+       s4 += s12 * 136657
+       s5 -= s12 * 683901
+       s12 = 0
+
+       carry[0] = s0 >> 21
+       s1 += carry[0]
+       s0 -= carry[0] << 21
+       carry[1] = s1 >> 21
+       s2 += carry[1]
+       s1 -= carry[1] << 21
+       carry[2] = s2 >> 21
+       s3 += carry[2]
+       s2 -= carry[2] << 21
+       carry[3] = s3 >> 21
+       s4 += carry[3]
+       s3 -= carry[3] << 21
+       carry[4] = s4 >> 21
+       s5 += carry[4]
+       s4 -= carry[4] << 21
+       carry[5] = s5 >> 21
+       s6 += carry[5]
+       s5 -= carry[5] << 21
+       carry[6] = s6 >> 21
+       s7 += carry[6]
+       s6 -= carry[6] << 21
+       carry[7] = s7 >> 21
+       s8 += carry[7]
+       s7 -= carry[7] << 21
+       carry[8] = s8 >> 21
+       s9 += carry[8]
+       s8 -= carry[8] << 21
+       carry[9] = s9 >> 21
+       s10 += carry[9]
+       s9 -= carry[9] << 21
+       carry[10] = s10 >> 21
+       s11 += carry[10]
+       s10 -= carry[10] << 21
+       carry[11] = s11 >> 21
+       s12 += carry[11]
+       s11 -= carry[11] << 21
+
+       s0 += s12 * 666643
+       s1 += s12 * 470296
+       s2 += s12 * 654183
+       s3 -= s12 * 997805
+       s4 += s12 * 136657
+       s5 -= s12 * 683901
+       s12 = 0
+
+       carry[0] = s0 >> 21
+       s1 += carry[0]
+       s0 -= carry[0] << 21
+       carry[1] = s1 >> 21
+       s2 += carry[1]
+       s1 -= carry[1] << 21
+       carry[2] = s2 >> 21
+       s3 += carry[2]
+       s2 -= carry[2] << 21
+       carry[3] = s3 >> 21
+       s4 += carry[3]
+       s3 -= carry[3] << 21
+       carry[4] = s4 >> 21
+       s5 += carry[4]
+       s4 -= carry[4] << 21
+       carry[5] = s5 >> 21
+       s6 += carry[5]
+       s5 -= carry[5] << 21
+       carry[6] = s6 >> 21
+       s7 += carry[6]
+       s6 -= carry[6] << 21
+       carry[7] = s7 >> 21
+       s8 += carry[7]
+       s7 -= carry[7] << 21
+       carry[8] = s8 >> 21
+       s9 += carry[8]
+       s8 -= carry[8] << 21
+       carry[9] = s9 >> 21
+       s10 += carry[9]
+       s9 -= carry[9] << 21
+       carry[10] = s10 >> 21
+       s11 += carry[10]
+       s10 -= carry[10] << 21
+
+       s[0] = byte(s0 >> 0)
+       s[1] = byte(s0 >> 8)
+       s[2] = byte((s0 >> 16) | (s1 << 5))
+       s[3] = byte(s1 >> 3)
+       s[4] = byte(s1 >> 11)
+       s[5] = byte((s1 >> 19) | (s2 << 2))
+       s[6] = byte(s2 >> 6)
+       s[7] = byte((s2 >> 14) | (s3 << 7))
+       s[8] = byte(s3 >> 1)
+       s[9] = byte(s3 >> 9)
+       s[10] = byte((s3 >> 17) | (s4 << 4))
+       s[11] = byte(s4 >> 4)
+       s[12] = byte(s4 >> 12)
+       s[13] = byte((s4 >> 20) | (s5 << 1))
+       s[14] = byte(s5 >> 7)
+       s[15] = byte((s5 >> 15) | (s6 << 6))
+       s[16] = byte(s6 >> 2)
+       s[17] = byte(s6 >> 10)
+       s[18] = byte((s6 >> 18) | (s7 << 3))
+       s[19] = byte(s7 >> 5)
+       s[20] = byte(s7 >> 13)
+       s[21] = byte(s8 >> 0)
+       s[22] = byte(s8 >> 8)
+       s[23] = byte((s8 >> 16) | (s9 << 5))
+       s[24] = byte(s9 >> 3)
+       s[25] = byte(s9 >> 11)
+       s[26] = byte((s9 >> 19) | (s10 << 2))
+       s[27] = byte(s10 >> 6)
+       s[28] = byte((s10 >> 14) | (s11 << 7))
+       s[29] = byte(s11 >> 1)
+       s[30] = byte(s11 >> 9)
+       s[31] = byte(s11 >> 17)
+}
+
+// Input:
+//   s[0]+256*s[1]+...+256^63*s[63] = s
+//
+// Output:
+//   s[0]+256*s[1]+...+256^31*s[31] = s mod l
+//   where l = 2^252 + 27742317777372353535851937790883648493.
+func ScReduce(out *[32]byte, s *[64]byte) {
+       s0 := 2097151 & load3(s[:])
+       s1 := 2097151 & (load4(s[2:]) >> 5)
+       s2 := 2097151 & (load3(s[5:]) >> 2)
+       s3 := 2097151 & (load4(s[7:]) >> 7)
+       s4 := 2097151 & (load4(s[10:]) >> 4)
+       s5 := 2097151 & (load3(s[13:]) >> 1)
+       s6 := 2097151 & (load4(s[15:]) >> 6)
+       s7 := 2097151 & (load3(s[18:]) >> 3)
+       s8 := 2097151 & load3(s[21:])
+       s9 := 2097151 & (load4(s[23:]) >> 5)
+       s10 := 2097151 & (load3(s[26:]) >> 2)
+       s11 := 2097151 & (load4(s[28:]) >> 7)
+       s12 := 2097151 & (load4(s[31:]) >> 4)
+       s13 := 2097151 & (load3(s[34:]) >> 1)
+       s14 := 2097151 & (load4(s[36:]) >> 6)
+       s15 := 2097151 & (load3(s[39:]) >> 3)
+       s16 := 2097151 & load3(s[42:])
+       s17 := 2097151 & (load4(s[44:]) >> 5)
+       s18 := 2097151 & (load3(s[47:]) >> 2)
+       s19 := 2097151 & (load4(s[49:]) >> 7)
+       s20 := 2097151 & (load4(s[52:]) >> 4)
+       s21 := 2097151 & (load3(s[55:]) >> 1)
+       s22 := 2097151 & (load4(s[57:]) >> 6)
+       s23 := (load4(s[60:]) >> 3)
+
+       s11 += s23 * 666643
+       s12 += s23 * 470296
+       s13 += s23 * 654183
+       s14 -= s23 * 997805
+       s15 += s23 * 136657
+       s16 -= s23 * 683901
+       s23 = 0
+
+       s10 += s22 * 666643
+       s11 += s22 * 470296
+       s12 += s22 * 654183
+       s13 -= s22 * 997805
+       s14 += s22 * 136657
+       s15 -= s22 * 683901
+       s22 = 0
+
+       s9 += s21 * 666643
+       s10 += s21 * 470296
+       s11 += s21 * 654183
+       s12 -= s21 * 997805
+       s13 += s21 * 136657
+       s14 -= s21 * 683901
+       s21 = 0
+
+       s8 += s20 * 666643
+       s9 += s20 * 470296
+       s10 += s20 * 654183
+       s11 -= s20 * 997805
+       s12 += s20 * 136657
+       s13 -= s20 * 683901
+       s20 = 0
+
+       s7 += s19 * 666643
+       s8 += s19 * 470296
+       s9 += s19 * 654183
+       s10 -= s19 * 997805
+       s11 += s19 * 136657
+       s12 -= s19 * 683901
+       s19 = 0
+
+       s6 += s18 * 666643
+       s7 += s18 * 470296
+       s8 += s18 * 654183
+       s9 -= s18 * 997805
+       s10 += s18 * 136657
+       s11 -= s18 * 683901
+       s18 = 0
+
+       var carry [17]int64
+
+       carry[6] = (s6 + (1 << 20)) >> 21
+       s7 += carry[6]
+       s6 -= carry[6] << 21
+       carry[8] = (s8 + (1 << 20)) >> 21
+       s9 += carry[8]
+       s8 -= carry[8] << 21
+       carry[10] = (s10 + (1 << 20)) >> 21
+       s11 += carry[10]
+       s10 -= carry[10] << 21
+       carry[12] = (s12 + (1 << 20)) >> 21
+       s13 += carry[12]
+       s12 -= carry[12] << 21
+       carry[14] = (s14 + (1 << 20)) >> 21
+       s15 += carry[14]
+       s14 -= carry[14] << 21
+       carry[16] = (s16 + (1 << 20)) >> 21
+       s17 += carry[16]
+       s16 -= carry[16] << 21
+
+       carry[7] = (s7 + (1 << 20)) >> 21
+       s8 += carry[7]
+       s7 -= carry[7] << 21
+       carry[9] = (s9 + (1 << 20)) >> 21
+       s10 += carry[9]
+       s9 -= carry[9] << 21
+       carry[11] = (s11 + (1 << 20)) >> 21
+       s12 += carry[11]
+       s11 -= carry[11] << 21
+       carry[13] = (s13 + (1 << 20)) >> 21
+       s14 += carry[13]
+       s13 -= carry[13] << 21
+       carry[15] = (s15 + (1 << 20)) >> 21
+       s16 += carry[15]
+       s15 -= carry[15] << 21
+
+       s5 += s17 * 666643
+       s6 += s17 * 470296
+       s7 += s17 * 654183
+       s8 -= s17 * 997805
+       s9 += s17 * 136657
+       s10 -= s17 * 683901
+       s17 = 0
+
+       s4 += s16 * 666643
+       s5 += s16 * 470296
+       s6 += s16 * 654183
+       s7 -= s16 * 997805
+       s8 += s16 * 136657
+       s9 -= s16 * 683901
+       s16 = 0
+
+       s3 += s15 * 666643
+       s4 += s15 * 470296
+       s5 += s15 * 654183
+       s6 -= s15 * 997805
+       s7 += s15 * 136657
+       s8 -= s15 * 683901
+       s15 = 0
+
+       s2 += s14 * 666643
+       s3 += s14 * 470296
+       s4 += s14 * 654183
+       s5 -= s14 * 997805
+       s6 += s14 * 136657
+       s7 -= s14 * 683901
+       s14 = 0
+
+       s1 += s13 * 666643
+       s2 += s13 * 470296
+       s3 += s13 * 654183
+       s4 -= s13 * 997805
+       s5 += s13 * 136657
+       s6 -= s13 * 683901
+       s13 = 0
+
+       s0 += s12 * 666643
+       s1 += s12 * 470296
+       s2 += s12 * 654183
+       s3 -= s12 * 997805
+       s4 += s12 * 136657
+       s5 -= s12 * 683901
+       s12 = 0
+
+       carry[0] = (s0 + (1 << 20)) >> 21
+       s1 += carry[0]
+       s0 -= carry[0] << 21
+       carry[2] = (s2 + (1 << 20)) >> 21
+       s3 += carry[2]
+       s2 -= carry[2] << 21
+       carry[4] = (s4 + (1 << 20)) >> 21
+       s5 += carry[4]
+       s4 -= carry[4] << 21
+       carry[6] = (s6 + (1 << 20)) >> 21
+       s7 += carry[6]
+       s6 -= carry[6] << 21
+       carry[8] = (s8 + (1 << 20)) >> 21
+       s9 += carry[8]
+       s8 -= carry[8] << 21
+       carry[10] = (s10 + (1 << 20)) >> 21
+       s11 += carry[10]
+       s10 -= carry[10] << 21
+
+       carry[1] = (s1 + (1 << 20)) >> 21
+       s2 += carry[1]
+       s1 -= carry[1] << 21
+       carry[3] = (s3 + (1 << 20)) >> 21
+       s4 += carry[3]
+       s3 -= carry[3] << 21
+       carry[5] = (s5 + (1 << 20)) >> 21
+       s6 += carry[5]
+       s5 -= carry[5] << 21
+       carry[7] = (s7 + (1 << 20)) >> 21
+       s8 += carry[7]
+       s7 -= carry[7] << 21
+       carry[9] = (s9 + (1 << 20)) >> 21
+       s10 += carry[9]
+       s9 -= carry[9] << 21
+       carry[11] = (s11 + (1 << 20)) >> 21
+       s12 += carry[11]
+       s11 -= carry[11] << 21
+
+       s0 += s12 * 666643
+       s1 += s12 * 470296
+       s2 += s12 * 654183
+       s3 -= s12 * 997805
+       s4 += s12 * 136657
+       s5 -= s12 * 683901
+       s12 = 0
+
+       carry[0] = s0 >> 21
+       s1 += carry[0]
+       s0 -= carry[0] << 21
+       carry[1] = s1 >> 21
+       s2 += carry[1]
+       s1 -= carry[1] << 21
+       carry[2] = s2 >> 21
+       s3 += carry[2]
+       s2 -= carry[2] << 21
+       carry[3] = s3 >> 21
+       s4 += carry[3]
+       s3 -= carry[3] << 21
+       carry[4] = s4 >> 21
+       s5 += carry[4]
+       s4 -= carry[4] << 21
+       carry[5] = s5 >> 21
+       s6 += carry[5]
+       s5 -= carry[5] << 21
+       carry[6] = s6 >> 21
+       s7 += carry[6]
+       s6 -= carry[6] << 21
+       carry[7] = s7 >> 21
+       s8 += carry[7]
+       s7 -= carry[7] << 21
+       carry[8] = s8 >> 21
+       s9 += carry[8]
+       s8 -= carry[8] << 21
+       carry[9] = s9 >> 21
+       s10 += carry[9]
+       s9 -= carry[9] << 21
+       carry[10] = s10 >> 21
+       s11 += carry[10]
+       s10 -= carry[10] << 21
+       carry[11] = s11 >> 21
+       s12 += carry[11]
+       s11 -= carry[11] << 21
+
+       s0 += s12 * 666643
+       s1 += s12 * 470296
+       s2 += s12 * 654183
+       s3 -= s12 * 997805
+       s4 += s12 * 136657
+       s5 -= s12 * 683901
+       s12 = 0
+
+       carry[0] = s0 >> 21
+       s1 += carry[0]
+       s0 -= carry[0] << 21
+       carry[1] = s1 >> 21
+       s2 += carry[1]
+       s1 -= carry[1] << 21
+       carry[2] = s2 >> 21
+       s3 += carry[2]
+       s2 -= carry[2] << 21
+       carry[3] = s3 >> 21
+       s4 += carry[3]
+       s3 -= carry[3] << 21
+       carry[4] = s4 >> 21
+       s5 += carry[4]
+       s4 -= carry[4] << 21
+       carry[5] = s5 >> 21
+       s6 += carry[5]
+       s5 -= carry[5] << 21
+       carry[6] = s6 >> 21
+       s7 += carry[6]
+       s6 -= carry[6] << 21
+       carry[7] = s7 >> 21
+       s8 += carry[7]
+       s7 -= carry[7] << 21
+       carry[8] = s8 >> 21
+       s9 += carry[8]
+       s8 -= carry[8] << 21
+       carry[9] = s9 >> 21
+       s10 += carry[9]
+       s9 -= carry[9] << 21
+       carry[10] = s10 >> 21
+       s11 += carry[10]
+       s10 -= carry[10] << 21
+
+       out[0] = byte(s0 >> 0)
+       out[1] = byte(s0 >> 8)
+       out[2] = byte((s0 >> 16) | (s1 << 5))
+       out[3] = byte(s1 >> 3)
+       out[4] = byte(s1 >> 11)
+       out[5] = byte((s1 >> 19) | (s2 << 2))
+       out[6] = byte(s2 >> 6)
+       out[7] = byte((s2 >> 14) | (s3 << 7))
+       out[8] = byte(s3 >> 1)
+       out[9] = byte(s3 >> 9)
+       out[10] = byte((s3 >> 17) | (s4 << 4))
+       out[11] = byte(s4 >> 4)
+       out[12] = byte(s4 >> 12)
+       out[13] = byte((s4 >> 20) | (s5 << 1))
+       out[14] = byte(s5 >> 7)
+       out[15] = byte((s5 >> 15) | (s6 << 6))
+       out[16] = byte(s6 >> 2)
+       out[17] = byte(s6 >> 10)
+       out[18] = byte((s6 >> 18) | (s7 << 3))
+       out[19] = byte(s7 >> 5)
+       out[20] = byte(s7 >> 13)
+       out[21] = byte(s8 >> 0)
+       out[22] = byte(s8 >> 8)
+       out[23] = byte((s8 >> 16) | (s9 << 5))
+       out[24] = byte(s9 >> 3)
+       out[25] = byte(s9 >> 11)
+       out[26] = byte((s9 >> 19) | (s10 << 2))
+       out[27] = byte(s10 >> 6)
+       out[28] = byte((s10 >> 14) | (s11 << 7))
+       out[29] = byte(s11 >> 1)
+       out[30] = byte(s11 >> 9)
+       out[31] = byte(s11 >> 17)
+}

diff --git a/vendor/github.com/bytom/crypto/ed25519/testdata/sign.input.gz b/vendor/github.com/bytom/crypto/ed25519/testdata/sign.input.gz
new file mode 100644 (file)
index 0000000..4103069
Binary files /dev/null and b/vendor/github.com/bytom/crypto/ed25519/testdata/sign.input.gz differ

diff --git a/vendor/github.com/bytom/crypto/randentropy/rand_entropy.go b/vendor/github.com/bytom/crypto/randentropy/rand_entropy.go
new file mode 100644 (file)
index 0000000..71ce1cd
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/randentropy/rand_entropy.go
@@ -0,0 +1,26 @@
+package randentropy
+
+import (
+       crand "crypto/rand"
+       "io"
+)
+
+var Reader io.Reader = &randEntropy{}
+
+type randEntropy struct {
+}
+
+func (*randEntropy) Read(bytes []byte) (n int, err error) {
+       readBytes := GetEntropyCSPRNG(len(bytes))
+       copy(bytes, readBytes)
+       return len(bytes), nil
+}
+
+func GetEntropyCSPRNG(n int) []byte {
+       mainBuff := make([]byte, n)
+       _, err := io.ReadFull(crand.Reader, mainBuff)
+       if err != nil {
+               panic("reading from crypto/rand failed: " + err.Error())
+       }
+       return mainBuff
+}

diff --git a/vendor/github.com/bytom/crypto/scrypt/example_test.go b/vendor/github.com/bytom/crypto/scrypt/example_test.go
new file mode 100644 (file)
index 0000000..6736479
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/scrypt/example_test.go
@@ -0,0 +1,26 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package scrypt_test
+
+import (
+       "encoding/base64"
+       "fmt"
+       "log"
+
+       "golang.org/x/crypto/scrypt"
+)
+
+func Example() {
+       // DO NOT use this salt value; generate your own random salt. 8 bytes is
+       // a good length.
+       salt := []byte{0xc8, 0x28, 0xf2, 0x58, 0xa7, 0x6a, 0xad, 0x7b}
+
+       dk, err := scrypt.Key([]byte("some password"), salt, 1<<15, 8, 1, 32)
+       if err != nil {
+               log.Fatal(err)
+       }
+       fmt.Println(base64.StdEncoding.EncodeToString(dk))
+       // Output: lGnMz8io0AUkfzn6Pls1qX20Vs7PGN6sbYQ2TQgY12M=
+}

diff --git a/vendor/github.com/bytom/crypto/scrypt/scrypt.go b/vendor/github.com/bytom/crypto/scrypt/scrypt.go
new file mode 100644 (file)
index 0000000..0f14e56
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/scrypt/scrypt.go
@@ -0,0 +1,242 @@
+// Package scrypt implements the scrypt key derivation function as defined in
+// Colin Percival's paper "Stronger Key Derivation via Sequential Memory-Hard
+// Functions" (https://www.tarsnap.com/scrypt/scrypt.pdf).
+
+// import "golang.org/x/crypto/scrypt"
+package scrypt
+
+import (
+       "crypto/sha256"
+       "errors"
+
+       "golang.org/x/crypto/pbkdf2"
+)
+
+const maxInt = int(^uint(0) >> 1)
+
+// blockCopy copies n numbers from src into dst.
+func blockCopy(dst, src []uint32, n int) {
+       copy(dst, src[:n])
+}
+
+// blockXOR XORs numbers from dst with n numbers from src.
+func blockXOR(dst, src []uint32, n int) {
+       for i, v := range src[:n] {
+               dst[i] ^= v
+       }
+}
+
+// salsaXOR applies Salsa20/8 to the XOR of 16 numbers from tmp and in,
+// and puts the result into both both tmp and out.
+func salsaXOR(tmp *[16]uint32, in, out []uint32) {
+       w0 := tmp[0] ^ in[0]
+       w1 := tmp[1] ^ in[1]
+       w2 := tmp[2] ^ in[2]
+       w3 := tmp[3] ^ in[3]
+       w4 := tmp[4] ^ in[4]
+       w5 := tmp[5] ^ in[5]
+       w6 := tmp[6] ^ in[6]
+       w7 := tmp[7] ^ in[7]
+       w8 := tmp[8] ^ in[8]
+       w9 := tmp[9] ^ in[9]
+       w10 := tmp[10] ^ in[10]
+       w11 := tmp[11] ^ in[11]
+       w12 := tmp[12] ^ in[12]
+       w13 := tmp[13] ^ in[13]
+       w14 := tmp[14] ^ in[14]
+       w15 := tmp[15] ^ in[15]
+
+       x0, x1, x2, x3, x4, x5, x6, x7, x8 := w0, w1, w2, w3, w4, w5, w6, w7, w8
+       x9, x10, x11, x12, x13, x14, x15 := w9, w10, w11, w12, w13, w14, w15
+
+       for i := 0; i < 8; i += 2 {
+               u := x0 + x12
+               x4 ^= u<<7 | u>>(32-7)
+               u = x4 + x0
+               x8 ^= u<<9 | u>>(32-9)
+               u = x8 + x4
+               x12 ^= u<<13 | u>>(32-13)
+               u = x12 + x8
+               x0 ^= u<<18 | u>>(32-18)
+
+               u = x5 + x1
+               x9 ^= u<<7 | u>>(32-7)
+               u = x9 + x5
+               x13 ^= u<<9 | u>>(32-9)
+               u = x13 + x9
+               x1 ^= u<<13 | u>>(32-13)
+               u = x1 + x13
+               x5 ^= u<<18 | u>>(32-18)
+
+               u = x10 + x6
+               x14 ^= u<<7 | u>>(32-7)
+               u = x14 + x10
+               x2 ^= u<<9 | u>>(32-9)
+               u = x2 + x14
+               x6 ^= u<<13 | u>>(32-13)
+               u = x6 + x2
+               x10 ^= u<<18 | u>>(32-18)
+
+               u = x15 + x11
+               x3 ^= u<<7 | u>>(32-7)
+               u = x3 + x15
+               x7 ^= u<<9 | u>>(32-9)
+               u = x7 + x3
+               x11 ^= u<<13 | u>>(32-13)
+               u = x11 + x7
+               x15 ^= u<<18 | u>>(32-18)
+
+               u = x0 + x3
+               x1 ^= u<<7 | u>>(32-7)
+               u = x1 + x0
+               x2 ^= u<<9 | u>>(32-9)
+               u = x2 + x1
+               x3 ^= u<<13 | u>>(32-13)
+               u = x3 + x2
+               x0 ^= u<<18 | u>>(32-18)
+
+               u = x5 + x4
+               x6 ^= u<<7 | u>>(32-7)
+               u = x6 + x5
+               x7 ^= u<<9 | u>>(32-9)
+               u = x7 + x6
+               x4 ^= u<<13 | u>>(32-13)
+               u = x4 + x7
+               x5 ^= u<<18 | u>>(32-18)
+
+               u = x10 + x9
+               x11 ^= u<<7 | u>>(32-7)
+               u = x11 + x10
+               x8 ^= u<<9 | u>>(32-9)
+               u = x8 + x11
+               x9 ^= u<<13 | u>>(32-13)
+               u = x9 + x8
+               x10 ^= u<<18 | u>>(32-18)
+
+               u = x15 + x14
+               x12 ^= u<<7 | u>>(32-7)
+               u = x12 + x15
+               x13 ^= u<<9 | u>>(32-9)
+               u = x13 + x12
+               x14 ^= u<<13 | u>>(32-13)
+               u = x14 + x13
+               x15 ^= u<<18 | u>>(32-18)
+       }
+       x0 += w0
+       x1 += w1
+       x2 += w2
+       x3 += w3
+       x4 += w4
+       x5 += w5
+       x6 += w6
+       x7 += w7
+       x8 += w8
+       x9 += w9
+       x10 += w10
+       x11 += w11
+       x12 += w12
+       x13 += w13
+       x14 += w14
+       x15 += w15
+
+       out[0], tmp[0] = x0, x0
+       out[1], tmp[1] = x1, x1
+       out[2], tmp[2] = x2, x2
+       out[3], tmp[3] = x3, x3
+       out[4], tmp[4] = x4, x4
+       out[5], tmp[5] = x5, x5
+       out[6], tmp[6] = x6, x6
+       out[7], tmp[7] = x7, x7
+       out[8], tmp[8] = x8, x8
+       out[9], tmp[9] = x9, x9
+       out[10], tmp[10] = x10, x10
+       out[11], tmp[11] = x11, x11
+       out[12], tmp[12] = x12, x12
+       out[13], tmp[13] = x13, x13
+       out[14], tmp[14] = x14, x14
+       out[15], tmp[15] = x15, x15
+}
+
+func blockMix(tmp *[16]uint32, in, out []uint32, r int) {
+       blockCopy(tmp[:], in[(2*r-1)*16:], 16)
+       for i := 0; i < 2*r; i += 2 {
+               salsaXOR(tmp, in[i*16:], out[i*8:])
+               salsaXOR(tmp, in[i*16+16:], out[i*8+r*16:])
+       }
+}
+
+func integer(b []uint32, r int) uint64 {
+       j := (2*r - 1) * 16
+       return uint64(b[j]) | uint64(b[j+1])<<32
+}
+
+func smix(b []byte, r, N int, v, xy []uint32) {
+       var tmp [16]uint32
+       x := xy
+       y := xy[32*r:]
+
+       j := 0
+       for i := 0; i < 32*r; i++ {
+               x[i] = uint32(b[j]) | uint32(b[j+1])<<8 | uint32(b[j+2])<<16 | uint32(b[j+3])<<24
+               j += 4
+       }
+       for i := 0; i < N; i += 2 {
+               blockCopy(v[i*(32*r):], x, 32*r)
+               blockMix(&tmp, x, y, r)
+
+               blockCopy(v[(i+1)*(32*r):], y, 32*r)
+               blockMix(&tmp, y, x, r)
+       }
+       for i := 0; i < N; i += 2 {
+               j := int(integer(x, r) & uint64(N-1))
+               blockXOR(x, v[j*(32*r):], 32*r)
+               blockMix(&tmp, x, y, r)
+
+               j = int(integer(y, r) & uint64(N-1))
+               blockXOR(y, v[j*(32*r):], 32*r)
+               blockMix(&tmp, y, x, r)
+       }
+       j = 0
+       for _, v := range x[:32*r] {
+               b[j+0] = byte(v >> 0)
+               b[j+1] = byte(v >> 8)
+               b[j+2] = byte(v >> 16)
+               b[j+3] = byte(v >> 24)
+               j += 4
+       }
+}
+
+// Key derives a key from the password, salt, and cost parameters, returning
+// a byte slice of length keyLen that can be used as cryptographic key.
+//
+// N is a CPU/memory cost parameter, which must be a power of two greater than 1.
+// r and p must satisfy r * p < 2³⁰. If the parameters do not satisfy the
+// limits, the function returns a nil byte slice and an error.
+//
+// For example, you can get a derived key for e.g. AES-256 (which needs a
+// 32-byte key) by doing:
+//
+//      dk, err := scrypt.Key([]byte("some password"), salt, 16384, 8, 1, 32)
+//
+// The recommended parameters for interactive logins as of 2017 are N=32768, r=8
+// and p=1. The parameters N, r, and p should be increased as memory latency and
+// CPU parallelism increases; consider setting N to the highest power of 2 you
+// can derive within 100 milliseconds. Remember to get a good random salt.
+func Key(password, salt []byte, N, r, p, keyLen int) ([]byte, error) {
+       if N <= 1 || N&(N-1) != 0 {
+               return nil, errors.New("scrypt: N must be > 1 and a power of 2")
+       }
+       if uint64(r)*uint64(p) >= 1<<30 || r > maxInt/128/p || r > maxInt/256 || N > maxInt/128/r {
+               return nil, errors.New("scrypt: parameters are too large")
+       }
+
+       xy := make([]uint32, 64*r)
+       v := make([]uint32, 32*N*r)
+       b := pbkdf2.Key(password, salt, 1, p*128*r, sha256.New)
+
+       for i := 0; i < p; i++ {
+               smix(b[i*128*r:], r, N, v, xy)
+       }
+
+       return pbkdf2.Key(password, b, 1, keyLen, sha256.New), nil
+}

diff --git a/vendor/github.com/bytom/crypto/scrypt/scrypt_test.go b/vendor/github.com/bytom/crypto/scrypt/scrypt_test.go
new file mode 100644 (file)
index 0000000..766ed8d
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/scrypt/scrypt_test.go
@@ -0,0 +1,162 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package scrypt
+
+import (
+       "bytes"
+       "testing"
+)
+
+type testVector struct {
+       password string
+       salt     string
+       N, r, p  int
+       output   []byte
+}
+
+var good = []testVector{
+       {
+               "password",
+               "salt",
+               2, 10, 10,
+               []byte{
+                       0x48, 0x2c, 0x85, 0x8e, 0x22, 0x90, 0x55, 0xe6, 0x2f,
+                       0x41, 0xe0, 0xec, 0x81, 0x9a, 0x5e, 0xe1, 0x8b, 0xdb,
+                       0x87, 0x25, 0x1a, 0x53, 0x4f, 0x75, 0xac, 0xd9, 0x5a,
+                       0xc5, 0xe5, 0xa, 0xa1, 0x5f,
+               },
+       },
+       {
+               "password",
+               "salt",
+               16, 100, 100,
+               []byte{
+                       0x88, 0xbd, 0x5e, 0xdb, 0x52, 0xd1, 0xdd, 0x0, 0x18,
+                       0x87, 0x72, 0xad, 0x36, 0x17, 0x12, 0x90, 0x22, 0x4e,
+                       0x74, 0x82, 0x95, 0x25, 0xb1, 0x8d, 0x73, 0x23, 0xa5,
+                       0x7f, 0x91, 0x96, 0x3c, 0x37,
+               },
+       },
+       {
+               "this is a long \000 password",
+               "and this is a long \000 salt",
+               16384, 8, 1,
+               []byte{
+                       0xc3, 0xf1, 0x82, 0xee, 0x2d, 0xec, 0x84, 0x6e, 0x70,
+                       0xa6, 0x94, 0x2f, 0xb5, 0x29, 0x98, 0x5a, 0x3a, 0x09,
+                       0x76, 0x5e, 0xf0, 0x4c, 0x61, 0x29, 0x23, 0xb1, 0x7f,
+                       0x18, 0x55, 0x5a, 0x37, 0x07, 0x6d, 0xeb, 0x2b, 0x98,
+                       0x30, 0xd6, 0x9d, 0xe5, 0x49, 0x26, 0x51, 0xe4, 0x50,
+                       0x6a, 0xe5, 0x77, 0x6d, 0x96, 0xd4, 0x0f, 0x67, 0xaa,
+                       0xee, 0x37, 0xe1, 0x77, 0x7b, 0x8a, 0xd5, 0xc3, 0x11,
+                       0x14, 0x32, 0xbb, 0x3b, 0x6f, 0x7e, 0x12, 0x64, 0x40,
+                       0x18, 0x79, 0xe6, 0x41, 0xae,
+               },
+       },
+       {
+               "p",
+               "s",
+               2, 1, 1,
+               []byte{
+                       0x48, 0xb0, 0xd2, 0xa8, 0xa3, 0x27, 0x26, 0x11, 0x98,
+                       0x4c, 0x50, 0xeb, 0xd6, 0x30, 0xaf, 0x52,
+               },
+       },
+
+       {
+               "",
+               "",
+               16, 1, 1,
+               []byte{
+                       0x77, 0xd6, 0x57, 0x62, 0x38, 0x65, 0x7b, 0x20, 0x3b,
+                       0x19, 0xca, 0x42, 0xc1, 0x8a, 0x04, 0x97, 0xf1, 0x6b,
+                       0x48, 0x44, 0xe3, 0x07, 0x4a, 0xe8, 0xdf, 0xdf, 0xfa,
+                       0x3f, 0xed, 0xe2, 0x14, 0x42, 0xfc, 0xd0, 0x06, 0x9d,
+                       0xed, 0x09, 0x48, 0xf8, 0x32, 0x6a, 0x75, 0x3a, 0x0f,
+                       0xc8, 0x1f, 0x17, 0xe8, 0xd3, 0xe0, 0xfb, 0x2e, 0x0d,
+                       0x36, 0x28, 0xcf, 0x35, 0xe2, 0x0c, 0x38, 0xd1, 0x89,
+                       0x06,
+               },
+       },
+       {
+               "password",
+               "NaCl",
+               1024, 8, 16,
+               []byte{
+                       0xfd, 0xba, 0xbe, 0x1c, 0x9d, 0x34, 0x72, 0x00, 0x78,
+                       0x56, 0xe7, 0x19, 0x0d, 0x01, 0xe9, 0xfe, 0x7c, 0x6a,
+                       0xd7, 0xcb, 0xc8, 0x23, 0x78, 0x30, 0xe7, 0x73, 0x76,
+                       0x63, 0x4b, 0x37, 0x31, 0x62, 0x2e, 0xaf, 0x30, 0xd9,
+                       0x2e, 0x22, 0xa3, 0x88, 0x6f, 0xf1, 0x09, 0x27, 0x9d,
+                       0x98, 0x30, 0xda, 0xc7, 0x27, 0xaf, 0xb9, 0x4a, 0x83,
+                       0xee, 0x6d, 0x83, 0x60, 0xcb, 0xdf, 0xa2, 0xcc, 0x06,
+                       0x40,
+               },
+       },
+       {
+               "pleaseletmein", "SodiumChloride",
+               16384, 8, 1,
+               []byte{
+                       0x70, 0x23, 0xbd, 0xcb, 0x3a, 0xfd, 0x73, 0x48, 0x46,
+                       0x1c, 0x06, 0xcd, 0x81, 0xfd, 0x38, 0xeb, 0xfd, 0xa8,
+                       0xfb, 0xba, 0x90, 0x4f, 0x8e, 0x3e, 0xa9, 0xb5, 0x43,
+                       0xf6, 0x54, 0x5d, 0xa1, 0xf2, 0xd5, 0x43, 0x29, 0x55,
+                       0x61, 0x3f, 0x0f, 0xcf, 0x62, 0xd4, 0x97, 0x05, 0x24,
+                       0x2a, 0x9a, 0xf9, 0xe6, 0x1e, 0x85, 0xdc, 0x0d, 0x65,
+                       0x1e, 0x40, 0xdf, 0xcf, 0x01, 0x7b, 0x45, 0x57, 0x58,
+                       0x87,
+               },
+       },
+       /*
+               // Disabled: needs 1 GiB RAM and takes too long for a simple test.
+               {
+                       "pleaseletmein", "SodiumChloride",
+                       1048576, 8, 1,
+                       []byte{
+                               0x21, 0x01, 0xcb, 0x9b, 0x6a, 0x51, 0x1a, 0xae, 0xad,
+                               0xdb, 0xbe, 0x09, 0xcf, 0x70, 0xf8, 0x81, 0xec, 0x56,
+                               0x8d, 0x57, 0x4a, 0x2f, 0xfd, 0x4d, 0xab, 0xe5, 0xee,
+                               0x98, 0x20, 0xad, 0xaa, 0x47, 0x8e, 0x56, 0xfd, 0x8f,
+                               0x4b, 0xa5, 0xd0, 0x9f, 0xfa, 0x1c, 0x6d, 0x92, 0x7c,
+                               0x40, 0xf4, 0xc3, 0x37, 0x30, 0x40, 0x49, 0xe8, 0xa9,
+                               0x52, 0xfb, 0xcb, 0xf4, 0x5c, 0x6f, 0xa7, 0x7a, 0x41,
+                               0xa4,
+                       },
+               },
+       */
+}
+
+var bad = []testVector{
+       {"p", "s", 0, 1, 1, nil},                    // N == 0
+       {"p", "s", 1, 1, 1, nil},                    // N == 1
+       {"p", "s", 7, 8, 1, nil},                    // N is not power of 2
+       {"p", "s", 16, maxInt / 2, maxInt / 2, nil}, // p * r too large
+}
+
+func TestKey(t *testing.T) {
+       for i, v := range good {
+               k, err := Key([]byte(v.password), []byte(v.salt), v.N, v.r, v.p, len(v.output))
+               if err != nil {
+                       t.Errorf("%d: got unexpected error: %s", i, err)
+               }
+               if !bytes.Equal(k, v.output) {
+                       t.Errorf("%d: expected %x, got %x", i, v.output, k)
+               }
+       }
+       for i, v := range bad {
+               _, err := Key([]byte(v.password), []byte(v.salt), v.N, v.r, v.p, 32)
+               if err == nil {
+                       t.Errorf("%d: expected error, got nil", i)
+               }
+       }
+}
+
+var sink []byte
+
+func BenchmarkKey(b *testing.B) {
+       for i := 0; i < b.N; i++ {
+               sink, _ = Key([]byte("password"), []byte("salt"), 1<<15, 8, 1, 64)
+       }
+}

diff --git a/vendor/github.com/bytom/crypto/scrypt/smix.go b/vendor/github.com/bytom/crypto/scrypt/smix.go
new file mode 100644 (file)
index 0000000..5376d89
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/scrypt/smix.go
@@ -0,0 +1,8 @@
+package scrypt
+
+// Smix create tensority cache
+// Some value is fixed: r = 1, N = 1024.
+func Smix(b []byte, v []uint32) {
+       xy := make([]uint32, 64)
+       smix(b, 1, 1024, v, xy)
+}

diff --git a/vendor/github.com/bytom/crypto/sha3pool/pool.go b/vendor/github.com/bytom/crypto/sha3pool/pool.go
new file mode 100644 (file)
index 0000000..ca69b6a
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/sha3pool/pool.go
@@ -0,0 +1,31 @@
+// Package sha3pool is a freelist for SHA3-256 hash objects.
+package sha3pool
+
+import (
+       "sync"
+
+       "golang.org/x/crypto/sha3"
+)
+
+var pool = &sync.Pool{New: func() interface{} { return sha3.New256() }}
+
+// Get256 returns an initialized SHA3-256 hash ready to use.
+// It is like sha3.New256 except it uses the freelist.
+// The caller should call Put256 when finished with the returned object.
+func Get256() sha3.ShakeHash {
+       return pool.Get().(sha3.ShakeHash)
+}
+
+// Put256 resets h and puts it in the freelist.
+func Put256(h sha3.ShakeHash) {
+       h.Reset()
+       pool.Put(h)
+}
+
+// Sum256 uses a ShakeHash from the pool to sum into hash.
+func Sum256(hash, data []byte) {
+       h := Get256()
+       h.Write(data)
+       h.Read(hash)
+       Put256(h)
+}

diff --git a/vendor/github.com/bytom/crypto/sm2/cert_pool.go b/vendor/github.com/bytom/crypto/sm2/cert_pool.go
new file mode 100644 (file)
index 0000000..0a29b46
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/sm2/cert_pool.go
@@ -0,0 +1,214 @@
+package sm2
+
+import (
+       "encoding/pem"
+       "errors"
+       "io/ioutil"
+       "os"
+       "runtime"
+       "sync"
+)
+
+// Possible certificate files; stop after finding one.
+var certFiles = []string{
+       "/etc/ssl/certs/ca-certificates.crt",                // Debian/Ubuntu/Gentoo etc.
+       "/etc/pki/tls/certs/ca-bundle.crt",                  // Fedora/RHEL 6
+       "/etc/ssl/ca-bundle.pem",                            // OpenSUSE
+       "/etc/pki/tls/cacert.pem",                           // OpenELEC
+       "/etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem", // CentOS/RHEL 7
+}
+
+// CertPool is a set of certificates.
+type CertPool struct {
+       bySubjectKeyId map[string][]int
+       byName         map[string][]int
+       certs          []*Certificate
+}
+
+// NewCertPool returns a new, empty CertPool.
+func NewCertPool() *CertPool {
+       return &CertPool{
+               bySubjectKeyId: make(map[string][]int),
+               byName:         make(map[string][]int),
+       }
+}
+
+// Possible directories with certificate files; stop after successfully
+// reading at least one file from a directory.
+var certDirectories = []string{
+       "/etc/ssl/certs",               // SLES10/SLES11, https://golang.org/issue/12139
+       "/system/etc/security/cacerts", // Android
+}
+
+var (
+       once           sync.Once
+       systemRoots    *CertPool
+       systemRootsErr error
+)
+
+func systemRootsPool() *CertPool {
+       once.Do(initSystemRoots)
+       return systemRoots
+}
+
+func initSystemRoots() {
+       systemRoots, systemRootsErr = loadSystemRoots()
+}
+
+func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) {
+       return nil, nil
+}
+
+func loadSystemRoots() (*CertPool, error) {
+       roots := NewCertPool()
+       var firstErr error
+       for _, file := range certFiles {
+               data, err := ioutil.ReadFile(file)
+               if err == nil {
+                       roots.AppendCertsFromPEM(data)
+                       return roots, nil
+               }
+               if firstErr == nil && !os.IsNotExist(err) {
+                       firstErr = err
+               }
+       }
+
+       for _, directory := range certDirectories {
+               fis, err := ioutil.ReadDir(directory)
+               if err != nil {
+                       if firstErr == nil && !os.IsNotExist(err) {
+                               firstErr = err
+                       }
+                       continue
+               }
+               rootsAdded := false
+               for _, fi := range fis {
+                       data, err := ioutil.ReadFile(directory + "/" + fi.Name())
+                       if err == nil && roots.AppendCertsFromPEM(data) {
+                               rootsAdded = true
+                       }
+               }
+               if rootsAdded {
+                       return roots, nil
+               }
+       }
+
+       return nil, firstErr
+}
+
+// SystemCertPool returns a copy of the system cert pool.
+//
+// Any mutations to the returned pool are not written to disk and do
+// not affect any other pool.
+func SystemCertPool() (*CertPool, error) {
+       if runtime.GOOS == "windows" {
+               // Issue 16736, 18609:
+               return nil, errors.New("crypto/x509: system root pool is not available on Windows")
+       }
+
+       return loadSystemRoots()
+}
+
+// findVerifiedParents attempts to find certificates in s which have signed the
+// given certificate. If any candidates were rejected then errCert will be set
+// to one of them, arbitrarily, and err will contain the reason that it was
+// rejected.
+func (s *CertPool) findVerifiedParents(cert *Certificate) (parents []int, errCert *Certificate, err error) {
+       if s == nil {
+               return
+       }
+       var candidates []int
+
+       if len(cert.AuthorityKeyId) > 0 {
+               candidates = s.bySubjectKeyId[string(cert.AuthorityKeyId)]
+       }
+       if len(candidates) == 0 {
+               candidates = s.byName[string(cert.RawIssuer)]
+       }
+
+       for _, c := range candidates {
+               if err = cert.CheckSignatureFrom(s.certs[c]); err == nil {
+                       parents = append(parents, c)
+               } else {
+                       errCert = s.certs[c]
+               }
+       }
+
+       return
+}
+
+func (s *CertPool) contains(cert *Certificate) bool {
+       if s == nil {
+               return false
+       }
+
+       candidates := s.byName[string(cert.RawSubject)]
+       for _, c := range candidates {
+               if s.certs[c].Equal(cert) {
+                       return true
+               }
+       }
+
+       return false
+}
+
+// AddCert adds a certificate to a pool.
+func (s *CertPool) AddCert(cert *Certificate) {
+       if cert == nil {
+               panic("adding nil Certificate to CertPool")
+       }
+
+       // Check that the certificate isn't being added twice.
+       if s.contains(cert) {
+               return
+       }
+
+       n := len(s.certs)
+       s.certs = append(s.certs, cert)
+
+       if len(cert.SubjectKeyId) > 0 {
+               keyId := string(cert.SubjectKeyId)
+               s.bySubjectKeyId[keyId] = append(s.bySubjectKeyId[keyId], n)
+       }
+       name := string(cert.RawSubject)
+       s.byName[name] = append(s.byName[name], n)
+}
+
+// AppendCertsFromPEM attempts to parse a series of PEM encoded certificates.
+// It appends any certificates found to s and reports whether any certificates
+// were successfully parsed.
+//
+// On many Linux systems, /etc/ssl/cert.pem will contain the system wide set
+// of root CAs in a format suitable for this function.
+func (s *CertPool) AppendCertsFromPEM(pemCerts []byte) (ok bool) {
+       for len(pemCerts) > 0 {
+               var block *pem.Block
+               block, pemCerts = pem.Decode(pemCerts)
+               if block == nil {
+                       break
+               }
+               if block.Type != "CERTIFICATE" || len(block.Headers) != 0 {
+                       continue
+               }
+
+               cert, err := ParseCertificate(block.Bytes)
+               if err != nil {
+                       continue
+               }
+
+               s.AddCert(cert)
+               ok = true
+       }
+
+       return
+}
+
+// Subjects returns a list of the DER-encoded subjects of
+// all of the certificates in the pool.
+func (s *CertPool) Subjects() [][]byte {
+       res := make([][]byte, len(s.certs))
+       for i, c := range s.certs {
+               res[i] = c.RawSubject
+       }
+       return res
+}

diff --git a/vendor/github.com/bytom/crypto/sm2/p256.go b/vendor/github.com/bytom/crypto/sm2/p256.go
new file mode 100644 (file)
index 0000000..090e105
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/sm2/p256.go
@@ -0,0 +1,1041 @@
+package sm2
+
+import (
+       "crypto/elliptic"
+       "math/big"
+       "sync"
+)
+
+/** 学习标准库p256的优化方法实现sm2的快速版本
+ * 标准库的p256的代码实现有些晦涩难懂，当然sm2的同样如此，有兴趣的大家可以研究研究，最后神兽压阵。。。
+ *
+ * ━━━━━━animal━━━━━━
+ * 　　　┏┓　　　┏┓
+ * 　　┏┛┻━━━┛┻┓
+ * 　　┃　　　　　　　┃
+ * 　　┃　　　━　　　┃
+ * 　　┃　┳┛　┗┳　┃
+ * 　　┃　　　　　　　┃
+ * 　　┃　　　┻　　　┃
+ * 　　┃　　　　　　　┃
+ * 　　┗━┓　　　┏━┛
+ * 　　　┃　　　┃
+ *　　 　┃　　　┃
+ *　　　 ┃　　　┗━━━┓
+ *        　┃　　　　　┣┓
+ *   　　┃　　　　　┏┛
+ *　　 　┗┓┓┏━┳┓┏┛
+ *　　　　┃┫┫ ┃┫┫
+ *　　　　┗┻┛ ┗┻┛
+ *
+ * ━━━━━Kawaii ━━━━━━
+ */
+
+type sm2P256Curve struct {
+       RInverse *big.Int
+       *elliptic.CurveParams
+       a, b, gx, gy sm2P256FieldElement
+}
+
+var initonce sync.Once
+var sm2P256 sm2P256Curve
+
+type sm2P256FieldElement [9]uint32
+type sm2P256LargeFieldElement [17]uint64
+
+const (
+       bottom28Bits = 0xFFFFFFF
+       bottom29Bits = 0x1FFFFFFF
+)
+
+func initP256Sm2() {
+       sm2P256.CurveParams = &elliptic.CurveParams{Name: "SM2-P-256"} // sm2
+       A, _ := new(big.Int).SetString("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFC", 16)
+       //SM2椭        椭 圆 曲 线 公 钥 密 码 算 法 推 荐 曲 线 参 数
+       sm2P256.P, _ = new(big.Int).SetString("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF", 16)
+       sm2P256.N, _ = new(big.Int).SetString("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123", 16)
+       sm2P256.B, _ = new(big.Int).SetString("28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93", 16)
+       sm2P256.Gx, _ = new(big.Int).SetString("32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7", 16)
+       sm2P256.Gy, _ = new(big.Int).SetString("BC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0", 16)
+       sm2P256.RInverse, _ = new(big.Int).SetString("7ffffffd80000002fffffffe000000017ffffffe800000037ffffffc80000002", 16)
+       sm2P256.BitSize = 256
+       sm2P256FromBig(&sm2P256.a, A)
+       sm2P256FromBig(&sm2P256.gx, sm2P256.Gx)
+       sm2P256FromBig(&sm2P256.gy, sm2P256.Gy)
+       sm2P256FromBig(&sm2P256.b, sm2P256.B)
+}
+
+func P256Sm2() elliptic.Curve {
+       initonce.Do(initP256Sm2)
+       return sm2P256
+}
+
+func (curve sm2P256Curve) Params() *elliptic.CurveParams {
+       return sm2P256.CurveParams
+}
+
+// y^2 = x^3 + ax + b
+func (curve sm2P256Curve) IsOnCurve(X, Y *big.Int) bool {
+       var a, x, y, y2, x3 sm2P256FieldElement
+
+       sm2P256FromBig(&x, X)
+       sm2P256FromBig(&y, Y)
+
+       sm2P256Square(&x3, &x)       // x3 = x ^ 2
+       sm2P256Mul(&x3, &x3, &x)     // x3 = x ^ 2 * x
+       sm2P256Mul(&a, &curve.a, &x) // a = a * x
+       sm2P256Add(&x3, &x3, &a)
+       sm2P256Add(&x3, &x3, &curve.b)
+
+       sm2P256Square(&y2, &y) // y2 = y ^ 2
+       return sm2P256ToBig(&x3).Cmp(sm2P256ToBig(&y2)) == 0
+}
+
+func zForAffine(x, y *big.Int) *big.Int {
+       z := new(big.Int)
+       if x.Sign() != 0 || y.Sign() != 0 {
+               z.SetInt64(1)
+       }
+       return z
+}
+
+func (curve sm2P256Curve) Add(x1, y1, x2, y2 *big.Int) (*big.Int, *big.Int) {
+       var X1, Y1, Z1, X2, Y2, Z2, X3, Y3, Z3 sm2P256FieldElement
+
+       z1 := zForAffine(x1, y1)
+       z2 := zForAffine(x2, y2)
+       sm2P256FromBig(&X1, x1)
+       sm2P256FromBig(&Y1, y1)
+       sm2P256FromBig(&Z1, z1)
+       sm2P256FromBig(&X2, x2)
+       sm2P256FromBig(&Y2, y2)
+       sm2P256FromBig(&Z2, z2)
+       sm2P256PointAdd(&X1, &Y1, &Z1, &X2, &Y2, &Z2, &X3, &Y3, &Z3)
+       return sm2P256ToAffine(&X3, &Y3, &Z3)
+}
+
+func (curve sm2P256Curve) Double(x1, y1 *big.Int) (*big.Int, *big.Int) {
+       var X1, Y1, Z1 sm2P256FieldElement
+
+       z1 := zForAffine(x1, y1)
+       sm2P256FromBig(&X1, x1)
+       sm2P256FromBig(&Y1, y1)
+       sm2P256FromBig(&Z1, z1)
+       sm2P256PointDouble(&X1, &Y1, &Z1, &X1, &Y1, &Z1)
+       return sm2P256ToAffine(&X1, &Y1, &Z1)
+}
+
+func (curve sm2P256Curve) ScalarMult(x1, y1 *big.Int, k []byte) (*big.Int, *big.Int) {
+       var scalarReversed [32]byte
+       var X, Y, Z, X1, Y1 sm2P256FieldElement
+
+       sm2P256FromBig(&X1, x1)
+       sm2P256FromBig(&Y1, y1)
+       sm2P256GetScalar(&scalarReversed, k)
+       sm2P256ScalarMult(&X, &Y, &Z, &X1, &Y1, &scalarReversed)
+       return sm2P256ToAffine(&X, &Y, &Z)
+}
+
+func (curve sm2P256Curve) ScalarBaseMult(k []byte) (*big.Int, *big.Int) {
+       var scalarReversed [32]byte
+       var X, Y, Z sm2P256FieldElement
+
+       sm2P256GetScalar(&scalarReversed, k)
+       sm2P256ScalarBaseMult(&X, &Y, &Z, &scalarReversed)
+       return sm2P256ToAffine(&X, &Y, &Z)
+}
+
+var sm2P256Precomputed = [9 * 2 * 15 * 2]uint32{
+       0x830053d, 0x328990f, 0x6c04fe1, 0xc0f72e5, 0x1e19f3c, 0x666b093, 0x175a87b, 0xec38276, 0x222cf4b,
+       0x185a1bba, 0x354e593, 0x1295fac1, 0xf2bc469, 0x47c60fa, 0xc19b8a9, 0xf63533e, 0x903ae6b, 0xc79acba,
+       0x15b061a4, 0x33e020b, 0xdffb34b, 0xfcf2c8, 0x16582e08, 0x262f203, 0xfb34381, 0xa55452, 0x604f0ff,
+       0x41f1f90, 0xd64ced2, 0xee377bf, 0x75f05f0, 0x189467ae, 0xe2244e, 0x1e7700e8, 0x3fbc464, 0x9612d2e,
+       0x1341b3b8, 0xee84e23, 0x1edfa5b4, 0x14e6030, 0x19e87be9, 0x92f533c, 0x1665d96c, 0x226653e, 0xa238d3e,
+       0xf5c62c, 0x95bb7a, 0x1f0e5a41, 0x28789c3, 0x1f251d23, 0x8726609, 0xe918910, 0x8096848, 0xf63d028,
+       0x152296a1, 0x9f561a8, 0x14d376fb, 0x898788a, 0x61a95fb, 0xa59466d, 0x159a003d, 0x1ad1698, 0x93cca08,
+       0x1b314662, 0x706e006, 0x11ce1e30, 0x97b710, 0x172fbc0d, 0x8f50158, 0x11c7ffe7, 0xd182cce, 0xc6ad9e8,
+       0x12ea31b2, 0xc4e4f38, 0x175b0d96, 0xec06337, 0x75a9c12, 0xb001fdf, 0x93e82f5, 0x34607de, 0xb8035ed,
+       0x17f97924, 0x75cf9e6, 0xdceaedd, 0x2529924, 0x1a10c5ff, 0xb1a54dc, 0x19464d8, 0x2d1997, 0xde6a110,
+       0x1e276ee5, 0x95c510c, 0x1aca7c7a, 0xfe48aca, 0x121ad4d9, 0xe4132c6, 0x8239b9d, 0x40ea9cd, 0x816c7b,
+       0x632d7a4, 0xa679813, 0x5911fcf, 0x82b0f7c, 0x57b0ad5, 0xbef65, 0xd541365, 0x7f9921f, 0xc62e7a,
+       0x3f4b32d, 0x58e50e1, 0x6427aed, 0xdcdda67, 0xe8c2d3e, 0x6aa54a4, 0x18df4c35, 0x49a6a8e, 0x3cd3d0c,
+       0xd7adf2, 0xcbca97, 0x1bda5f2d, 0x3258579, 0x606b1e6, 0x6fc1b5b, 0x1ac27317, 0x503ca16, 0xa677435,
+       0x57bc73, 0x3992a42, 0xbab987b, 0xfab25eb, 0x128912a4, 0x90a1dc4, 0x1402d591, 0x9ffbcfc, 0xaa48856,
+       0x7a7c2dc, 0xcefd08a, 0x1b29bda6, 0xa785641, 0x16462d8c, 0x76241b7, 0x79b6c3b, 0x204ae18, 0xf41212b,
+       0x1f567a4d, 0xd6ce6db, 0xedf1784, 0x111df34, 0x85d7955, 0x55fc189, 0x1b7ae265, 0xf9281ac, 0xded7740,
+       0xf19468b, 0x83763bb, 0x8ff7234, 0x3da7df8, 0x9590ac3, 0xdc96f2a, 0x16e44896, 0x7931009, 0x99d5acc,
+       0x10f7b842, 0xaef5e84, 0xc0310d7, 0xdebac2c, 0x2a7b137, 0x4342344, 0x19633649, 0x3a10624, 0x4b4cb56,
+       0x1d809c59, 0xac007f, 0x1f0f4bcd, 0xa1ab06e, 0xc5042cf, 0x82c0c77, 0x76c7563, 0x22c30f3, 0x3bf1568,
+       0x7a895be, 0xfcca554, 0x12e90e4c, 0x7b4ab5f, 0x13aeb76b, 0x5887e2c, 0x1d7fe1e3, 0x908c8e3, 0x95800ee,
+       0xb36bd54, 0xf08905d, 0x4e73ae8, 0xf5a7e48, 0xa67cb0, 0x50e1067, 0x1b944a0a, 0xf29c83a, 0xb23cfb9,
+       0xbe1db1, 0x54de6e8, 0xd4707f2, 0x8ebcc2d, 0x2c77056, 0x1568ce4, 0x15fcc849, 0x4069712, 0xe2ed85f,
+       0x2c5ff09, 0x42a6929, 0x628e7ea, 0xbd5b355, 0xaf0bd79, 0xaa03699, 0xdb99816, 0x4379cef, 0x81d57b,
+       0x11237f01, 0xe2a820b, 0xfd53b95, 0x6beb5ee, 0x1aeb790c, 0xe470d53, 0x2c2cfee, 0x1c1d8d8, 0xa520fc4,
+       0x1518e034, 0xa584dd4, 0x29e572b, 0xd4594fc, 0x141a8f6f, 0x8dfccf3, 0x5d20ba3, 0x2eb60c3, 0x9f16eb0,
+       0x11cec356, 0xf039f84, 0x1b0990c1, 0xc91e526, 0x10b65bae, 0xf0616e8, 0x173fa3ff, 0xec8ccf9, 0xbe32790,
+       0x11da3e79, 0xe2f35c7, 0x908875c, 0xdacf7bd, 0x538c165, 0x8d1487f, 0x7c31aed, 0x21af228, 0x7e1689d,
+       0xdfc23ca, 0x24f15dc, 0x25ef3c4, 0x35248cd, 0x99a0f43, 0xa4b6ecc, 0xd066b3, 0x2481152, 0x37a7688,
+       0x15a444b6, 0xb62300c, 0x4b841b, 0xa655e79, 0xd53226d, 0xbeb348a, 0x127f3c2, 0xb989247, 0x71a277d,
+       0x19e9dfcb, 0xb8f92d0, 0xe2d226c, 0x390a8b0, 0x183cc462, 0x7bd8167, 0x1f32a552, 0x5e02db4, 0xa146ee9,
+       0x1a003957, 0x1c95f61, 0x1eeec155, 0x26f811f, 0xf9596ba, 0x3082bfb, 0x96df083, 0x3e3a289, 0x7e2d8be,
+       0x157a63e0, 0x99b8941, 0x1da7d345, 0xcc6cd0, 0x10beed9a, 0x48e83c0, 0x13aa2e25, 0x7cad710, 0x4029988,
+       0x13dfa9dd, 0xb94f884, 0x1f4adfef, 0xb88543, 0x16f5f8dc, 0xa6a67f4, 0x14e274e2, 0x5e56cf4, 0x2f24ef,
+       0x1e9ef967, 0xfe09bad, 0xfe079b3, 0xcc0ae9e, 0xb3edf6d, 0x3e961bc, 0x130d7831, 0x31043d6, 0xba986f9,
+       0x1d28055, 0x65240ca, 0x4971fa3, 0x81b17f8, 0x11ec34a5, 0x8366ddc, 0x1471809, 0xfa5f1c6, 0xc911e15,
+       0x8849491, 0xcf4c2e2, 0x14471b91, 0x39f75be, 0x445c21e, 0xf1585e9, 0x72cc11f, 0x4c79f0c, 0xe5522e1,
+       0x1874c1ee, 0x4444211, 0x7914884, 0x3d1b133, 0x25ba3c, 0x4194f65, 0x1c0457ef, 0xac4899d, 0xe1fa66c,
+       0x130a7918, 0x9b8d312, 0x4b1c5c8, 0x61ccac3, 0x18c8aa6f, 0xe93cb0a, 0xdccb12c, 0xde10825, 0x969737d,
+       0xf58c0c3, 0x7cee6a9, 0xc2c329a, 0xc7f9ed9, 0x107b3981, 0x696a40e, 0x152847ff, 0x4d88754, 0xb141f47,
+       0x5a16ffe, 0x3a7870a, 0x18667659, 0x3b72b03, 0xb1c9435, 0x9285394, 0xa00005a, 0x37506c, 0x2edc0bb,
+       0x19afe392, 0xeb39cac, 0x177ef286, 0xdf87197, 0x19f844ed, 0x31fe8, 0x15f9bfd, 0x80dbec, 0x342e96e,
+       0x497aced, 0xe88e909, 0x1f5fa9ba, 0x530a6ee, 0x1ef4e3f1, 0x69ffd12, 0x583006d, 0x2ecc9b1, 0x362db70,
+       0x18c7bdc5, 0xf4bb3c5, 0x1c90b957, 0xf067c09, 0x9768f2b, 0xf73566a, 0x1939a900, 0x198c38a, 0x202a2a1,
+       0x4bbf5a6, 0x4e265bc, 0x1f44b6e7, 0x185ca49, 0xa39e81b, 0x24aff5b, 0x4acc9c2, 0x638bdd3, 0xb65b2a8,
+       0x6def8be, 0xb94537a, 0x10b81dee, 0xe00ec55, 0x2f2cdf7, 0xc20622d, 0x2d20f36, 0xe03c8c9, 0x898ea76,
+       0x8e3921b, 0x8905bff, 0x1e94b6c8, 0xee7ad86, 0x154797f2, 0xa620863, 0x3fbd0d9, 0x1f3caab, 0x30c24bd,
+       0x19d3892f, 0x59c17a2, 0x1ab4b0ae, 0xf8714ee, 0x90c4098, 0xa9c800d, 0x1910236b, 0xea808d3, 0x9ae2f31,
+       0x1a15ad64, 0xa48c8d1, 0x184635a4, 0xb725ef1, 0x11921dcc, 0x3f866df, 0x16c27568, 0xbdf580a, 0xb08f55c,
+       0x186ee1c, 0xb1627fa, 0x34e82f6, 0x933837e, 0xf311be5, 0xfedb03b, 0x167f72cd, 0xa5469c0, 0x9c82531,
+       0xb92a24b, 0x14fdc8b, 0x141980d1, 0xbdc3a49, 0x7e02bb1, 0xaf4e6dd, 0x106d99e1, 0xd4616fc, 0x93c2717,
+       0x1c0a0507, 0xc6d5fed, 0x9a03d8b, 0xa1d22b0, 0x127853e3, 0xc4ac6b8, 0x1a048cf7, 0x9afb72c, 0x65d485d,
+       0x72d5998, 0xe9fa744, 0xe49e82c, 0x253cf80, 0x5f777ce, 0xa3799a5, 0x17270cbb, 0xc1d1ef0, 0xdf74977,
+       0x114cb859, 0xfa8e037, 0xb8f3fe5, 0xc734cc6, 0x70d3d61, 0xeadac62, 0x12093dd0, 0x9add67d, 0x87200d6,
+       0x175bcbb, 0xb29b49f, 0x1806b79c, 0x12fb61f, 0x170b3a10, 0x3aaf1cf, 0xa224085, 0x79d26af, 0x97759e2,
+       0x92e19f1, 0xb32714d, 0x1f00d9f1, 0xc728619, 0x9e6f627, 0xe745e24, 0x18ea4ace, 0xfc60a41, 0x125f5b2,
+       0xc3cf512, 0x39ed486, 0xf4d15fa, 0xf9167fd, 0x1c1f5dd5, 0xc21a53e, 0x1897930, 0x957a112, 0x21059a0,
+       0x1f9e3ddc, 0xa4dfced, 0x8427f6f, 0x726fbe7, 0x1ea658f8, 0x2fdcd4c, 0x17e9b66f, 0xb2e7c2e, 0x39923bf,
+       0x1bae104, 0x3973ce5, 0xc6f264c, 0x3511b84, 0x124195d7, 0x11996bd, 0x20be23d, 0xdc437c4, 0x4b4f16b,
+       0x11902a0, 0x6c29cc9, 0x1d5ffbe6, 0xdb0b4c7, 0x10144c14, 0x2f2b719, 0x301189, 0x2343336, 0xa0bf2ac,
+}
+
+func sm2P256GetScalar(b *[32]byte, a []byte) {
+       var scalarBytes []byte
+
+       n := new(big.Int).SetBytes(a)
+       if n.Cmp(sm2P256.N) >= 0 {
+               n.Mod(n, sm2P256.N)
+               scalarBytes = n.Bytes()
+       } else {
+               scalarBytes = a
+       }
+       for i, v := range scalarBytes {
+               b[len(scalarBytes)-(1+i)] = v
+       }
+}
+
+func sm2P256PointAddMixed(xOut, yOut, zOut, x1, y1, z1, x2, y2 *sm2P256FieldElement) {
+       var z1z1, z1z1z1, s2, u2, h, i, j, r, rr, v, tmp sm2P256FieldElement
+
+       sm2P256Square(&z1z1, z1)
+       sm2P256Add(&tmp, z1, z1)
+
+       sm2P256Mul(&u2, x2, &z1z1)
+       sm2P256Mul(&z1z1z1, z1, &z1z1)
+       sm2P256Mul(&s2, y2, &z1z1z1)
+       sm2P256Sub(&h, &u2, x1)
+       sm2P256Add(&i, &h, &h)
+       sm2P256Square(&i, &i)
+       sm2P256Mul(&j, &h, &i)
+       sm2P256Sub(&r, &s2, y1)
+       sm2P256Add(&r, &r, &r)
+       sm2P256Mul(&v, x1, &i)
+
+       sm2P256Mul(zOut, &tmp, &h)
+       sm2P256Square(&rr, &r)
+       sm2P256Sub(xOut, &rr, &j)
+       sm2P256Sub(xOut, xOut, &v)
+       sm2P256Sub(xOut, xOut, &v)
+
+       sm2P256Sub(&tmp, &v, xOut)
+       sm2P256Mul(yOut, &tmp, &r)
+       sm2P256Mul(&tmp, y1, &j)
+       sm2P256Sub(yOut, yOut, &tmp)
+       sm2P256Sub(yOut, yOut, &tmp)
+}
+
+// sm2P256CopyConditional sets out=in if mask = 0xffffffff in constant time.
+//
+// On entry: mask is either 0 or 0xffffffff.
+func sm2P256CopyConditional(out, in *sm2P256FieldElement, mask uint32) {
+       for i := 0; i < 9; i++ {
+               tmp := mask & (in[i] ^ out[i])
+               out[i] ^= tmp
+       }
+}
+
+// sm2P256SelectAffinePoint sets {out_x,out_y} to the index'th entry of table.
+// On entry: index < 16, table[0] must be zero.
+func sm2P256SelectAffinePoint(xOut, yOut *sm2P256FieldElement, table []uint32, index uint32) {
+       for i := range xOut {
+               xOut[i] = 0
+       }
+       for i := range yOut {
+               yOut[i] = 0
+       }
+
+       for i := uint32(1); i < 16; i++ {
+               mask := i ^ index
+               mask |= mask >> 2
+               mask |= mask >> 1
+               mask &= 1
+               mask--
+               for j := range xOut {
+                       xOut[j] |= table[0] & mask
+                       table = table[1:]
+               }
+               for j := range yOut {
+                       yOut[j] |= table[0] & mask
+                       table = table[1:]
+               }
+       }
+}
+
+// sm2P256SelectJacobianPoint sets {out_x,out_y,out_z} to the index'th entry of
+// table.
+// On entry: index < 16, table[0] must be zero.
+func sm2P256SelectJacobianPoint(xOut, yOut, zOut *sm2P256FieldElement, table *[16][3]sm2P256FieldElement, index uint32) {
+       for i := range xOut {
+               xOut[i] = 0
+       }
+       for i := range yOut {
+               yOut[i] = 0
+       }
+       for i := range zOut {
+               zOut[i] = 0
+       }
+
+       // The implicit value at index 0 is all zero. We don't need to perform that
+       // iteration of the loop because we already set out_* to zero.
+       for i := uint32(1); i < 16; i++ {
+               mask := i ^ index
+               mask |= mask >> 2
+               mask |= mask >> 1
+               mask &= 1
+               mask--
+               for j := range xOut {
+                       xOut[j] |= table[i][0][j] & mask
+               }
+               for j := range yOut {
+                       yOut[j] |= table[i][1][j] & mask
+               }
+               for j := range zOut {
+                       zOut[j] |= table[i][2][j] & mask
+               }
+       }
+}
+
+// sm2P256GetBit returns the bit'th bit of scalar.
+func sm2P256GetBit(scalar *[32]uint8, bit uint) uint32 {
+       return uint32(((scalar[bit>>3]) >> (bit & 7)) & 1)
+}
+
+// sm2P256ScalarBaseMult sets {xOut,yOut,zOut} = scalar*G where scalar is a
+// little-endian number. Note that the value of scalar must be less than the
+// order of the group.
+func sm2P256ScalarBaseMult(xOut, yOut, zOut *sm2P256FieldElement, scalar *[32]uint8) {
+       nIsInfinityMask := ^uint32(0)
+       var px, py, tx, ty, tz sm2P256FieldElement
+       var pIsNoninfiniteMask, mask, tableOffset uint32
+
+       for i := range xOut {
+               xOut[i] = 0
+       }
+       for i := range yOut {
+               yOut[i] = 0
+       }
+       for i := range zOut {
+               zOut[i] = 0
+       }
+
+       // The loop adds bits at positions 0, 64, 128 and 192, followed by
+       // positions 32,96,160 and 224 and does this 32 times.
+       for i := uint(0); i < 32; i++ {
+               if i != 0 {
+                       sm2P256PointDouble(xOut, yOut, zOut, xOut, yOut, zOut)
+               }
+               tableOffset = 0
+               for j := uint(0); j <= 32; j += 32 {
+                       bit0 := sm2P256GetBit(scalar, 31-i+j)
+                       bit1 := sm2P256GetBit(scalar, 95-i+j)
+                       bit2 := sm2P256GetBit(scalar, 159-i+j)
+                       bit3 := sm2P256GetBit(scalar, 223-i+j)
+                       index := bit0 | (bit1 << 1) | (bit2 << 2) | (bit3 << 3)
+
+                       sm2P256SelectAffinePoint(&px, &py, sm2P256Precomputed[tableOffset:], index)
+                       tableOffset += 30 * 9
+
+                       // Since scalar is less than the order of the group, we know that
+                       // {xOut,yOut,zOut} != {px,py,1}, unless both are zero, which we handle
+                       // below.
+                       sm2P256PointAddMixed(&tx, &ty, &tz, xOut, yOut, zOut, &px, &py)
+                       // The result of pointAddMixed is incorrect if {xOut,yOut,zOut} is zero
+                       // (a.k.a.  the point at infinity). We handle that situation by
+                       // copying the point from the table.
+                       sm2P256CopyConditional(xOut, &px, nIsInfinityMask)
+                       sm2P256CopyConditional(yOut, &py, nIsInfinityMask)
+                       sm2P256CopyConditional(zOut, &sm2P256Factor[1], nIsInfinityMask)
+
+                       // Equally, the result is also wrong if the point from the table is
+                       // zero, which happens when the index is zero. We handle that by
+                       // only copying from {tx,ty,tz} to {xOut,yOut,zOut} if index != 0.
+                       pIsNoninfiniteMask = nonZeroToAllOnes(index)
+                       mask = pIsNoninfiniteMask & ^nIsInfinityMask
+                       sm2P256CopyConditional(xOut, &tx, mask)
+                       sm2P256CopyConditional(yOut, &ty, mask)
+                       sm2P256CopyConditional(zOut, &tz, mask)
+                       // If p was not zero, then n is now non-zero.
+                       nIsInfinityMask &^= pIsNoninfiniteMask
+               }
+       }
+}
+
+func sm2P256ScalarMult(xOut, yOut, zOut, x, y *sm2P256FieldElement, scalar *[32]uint8) {
+       var precomp [16][3]sm2P256FieldElement
+       var px, py, pz, tx, ty, tz sm2P256FieldElement
+       var nIsInfinityMask, index, pIsNoninfiniteMask, mask uint32
+
+       // We precompute 0,1,2,... times {x,y}.
+       precomp[1][0] = *x
+       precomp[1][1] = *y
+       precomp[1][2] = sm2P256Factor[1]
+
+       for i := 2; i < 16; i += 2 {
+               sm2P256PointDouble(&precomp[i][0], &precomp[i][1], &precomp[i][2], &precomp[i/2][0], &precomp[i/2][1], &precomp[i/2][2])
+               sm2P256PointAddMixed(&precomp[i+1][0], &precomp[i+1][1], &precomp[i+1][2], &precomp[i][0], &precomp[i][1], &precomp[i][2], x, y)
+       }
+
+       for i := range xOut {
+               xOut[i] = 0
+       }
+       for i := range yOut {
+               yOut[i] = 0
+       }
+       for i := range zOut {
+               zOut[i] = 0
+       }
+       nIsInfinityMask = ^uint32(0)
+
+       // We add in a window of four bits each iteration and do this 64 times.
+       for i := 0; i < 64; i++ {
+               if i != 0 {
+                       sm2P256PointDouble(xOut, yOut, zOut, xOut, yOut, zOut)
+                       sm2P256PointDouble(xOut, yOut, zOut, xOut, yOut, zOut)
+                       sm2P256PointDouble(xOut, yOut, zOut, xOut, yOut, zOut)
+                       sm2P256PointDouble(xOut, yOut, zOut, xOut, yOut, zOut)
+               }
+
+               index = uint32(scalar[31-i/2])
+               if (i & 1) == 1 {
+                       index &= 15
+               } else {
+                       index >>= 4
+               }
+
+               // See the comments in scalarBaseMult about handling infinities.
+               sm2P256SelectJacobianPoint(&px, &py, &pz, &precomp, index)
+               sm2P256PointAdd(xOut, yOut, zOut, &px, &py, &pz, &tx, &ty, &tz)
+               sm2P256CopyConditional(xOut, &px, nIsInfinityMask)
+               sm2P256CopyConditional(yOut, &py, nIsInfinityMask)
+               sm2P256CopyConditional(zOut, &pz, nIsInfinityMask)
+
+               pIsNoninfiniteMask = nonZeroToAllOnes(index)
+               mask = pIsNoninfiniteMask & ^nIsInfinityMask
+               sm2P256CopyConditional(xOut, &tx, mask)
+               sm2P256CopyConditional(yOut, &ty, mask)
+               sm2P256CopyConditional(zOut, &tz, mask)
+               nIsInfinityMask &^= pIsNoninfiniteMask
+       }
+}
+
+func sm2P256PointToAffine(xOut, yOut, x, y, z *sm2P256FieldElement) {
+       var zInv, zInvSq sm2P256FieldElement
+
+       zz := sm2P256ToBig(z)
+       zz.ModInverse(zz, sm2P256.P)
+       sm2P256FromBig(&zInv, zz)
+
+       sm2P256Square(&zInvSq, &zInv)
+       sm2P256Mul(xOut, x, &zInvSq)
+       sm2P256Mul(&zInv, &zInv, &zInvSq)
+       sm2P256Mul(yOut, y, &zInv)
+}
+
+func sm2P256ToAffine(x, y, z *sm2P256FieldElement) (xOut, yOut *big.Int) {
+       var xx, yy sm2P256FieldElement
+
+       sm2P256PointToAffine(&xx, &yy, x, y, z)
+       return sm2P256ToBig(&xx), sm2P256ToBig(&yy)
+}
+
+var sm2P256Factor = []sm2P256FieldElement{
+       sm2P256FieldElement{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0},
+       sm2P256FieldElement{0x2, 0x0, 0x1FFFFF00, 0x7FF, 0x0, 0x0, 0x0, 0x2000000, 0x0},
+       sm2P256FieldElement{0x4, 0x0, 0x1FFFFE00, 0xFFF, 0x0, 0x0, 0x0, 0x4000000, 0x0},
+       sm2P256FieldElement{0x6, 0x0, 0x1FFFFD00, 0x17FF, 0x0, 0x0, 0x0, 0x6000000, 0x0},
+       sm2P256FieldElement{0x8, 0x0, 0x1FFFFC00, 0x1FFF, 0x0, 0x0, 0x0, 0x8000000, 0x0},
+       sm2P256FieldElement{0xA, 0x0, 0x1FFFFB00, 0x27FF, 0x0, 0x0, 0x0, 0xA000000, 0x0},
+       sm2P256FieldElement{0xC, 0x0, 0x1FFFFA00, 0x2FFF, 0x0, 0x0, 0x0, 0xC000000, 0x0},
+       sm2P256FieldElement{0xE, 0x0, 0x1FFFF900, 0x37FF, 0x0, 0x0, 0x0, 0xE000000, 0x0},
+       sm2P256FieldElement{0x10, 0x0, 0x1FFFF800, 0x3FFF, 0x0, 0x0, 0x0, 0x0, 0x01},
+}
+
+func sm2P256Scalar(b *sm2P256FieldElement, a int) {
+       sm2P256Mul(b, b, &sm2P256Factor[a])
+}
+
+// (x3, y3, z3) = (x1, y1, z1) + (x2, y2, z2)
+func sm2P256PointAdd(x1, y1, z1, x2, y2, z2, x3, y3, z3 *sm2P256FieldElement) {
+       var u1, u2, z22, z12, z23, z13, s1, s2, h, h2, r, r2, tm sm2P256FieldElement
+
+       if sm2P256ToBig(z1).Sign() == 0 {
+               sm2P256Dup(x3, x2)
+               sm2P256Dup(y3, y2)
+               sm2P256Dup(z3, z2)
+               return
+       }
+
+       if sm2P256ToBig(z2).Sign() == 0 {
+               sm2P256Dup(x3, x1)
+               sm2P256Dup(y3, y1)
+               sm2P256Dup(z3, z1)
+               return
+       }
+
+       sm2P256Square(&z12, z1) // z12 = z1 ^ 2
+       sm2P256Square(&z22, z2) // z22 = z2 ^ 2
+
+       sm2P256Mul(&z13, &z12, z1) // z13 = z1 ^ 3
+       sm2P256Mul(&z23, &z22, z2) // z23 = z2 ^ 3
+
+       sm2P256Mul(&u1, x1, &z22) // u1 = x1 * z2 ^ 2
+       sm2P256Mul(&u2, x2, &z12) // u2 = x2 * z1 ^ 2
+
+       sm2P256Mul(&s1, y1, &z23) // s1 = y1 * z2 ^ 3
+       sm2P256Mul(&s2, y2, &z13) // s2 = y2 * z1 ^ 3
+
+       if sm2P256ToBig(&u1).Cmp(sm2P256ToBig(&u2)) == 0 &&
+               sm2P256ToBig(&s1).Cmp(sm2P256ToBig(&s2)) == 0 {
+               sm2P256PointDouble(x1, y1, z1, x1, y1, z1)
+       }
+
+       sm2P256Sub(&h, &u2, &u1) // h = u2 - u1
+       sm2P256Sub(&r, &s2, &s1) // r = s2 - s1
+
+       sm2P256Square(&r2, &r) // r2 = r ^ 2
+       sm2P256Square(&h2, &h) // h2 = h ^ 2
+
+       sm2P256Mul(&tm, &h2, &h) // tm = h ^ 3
+       sm2P256Sub(x3, &r2, &tm)
+       sm2P256Mul(&tm, &u1, &h2)
+       sm2P256Scalar(&tm, 2)   // tm = 2 * (u1 * h ^ 2)
+       sm2P256Sub(x3, x3, &tm) // x3 = r ^ 2 - h ^ 3 - 2 * u1 * h ^ 2
+
+       sm2P256Mul(&tm, &u1, &h2) // tm = u1 * h ^ 2
+       sm2P256Sub(&tm, &tm, x3)  // tm = u1 * h ^ 2 - x3
+       sm2P256Mul(y3, &r, &tm)
+       sm2P256Mul(&tm, &h2, &h)  // tm = h ^ 3
+       sm2P256Mul(&tm, &tm, &s1) // tm = s1 * h ^ 3
+       sm2P256Sub(y3, y3, &tm)   // y3 = r * (u1 * h ^ 2 - x3) - s1 * h ^ 3
+
+       sm2P256Mul(z3, z1, z2)
+       sm2P256Mul(z3, z3, &h) // z3 = z1 * z3 * h
+}
+
+func sm2P256PointDouble(x3, y3, z3, x, y, z *sm2P256FieldElement) {
+       var s, m, m2, x2, y2, z2, z4, y4, az4 sm2P256FieldElement
+
+       sm2P256Square(&x2, x) // x2 = x ^ 2
+       sm2P256Square(&y2, y) // y2 = y ^ 2
+       sm2P256Square(&z2, z) // z2 = z ^ 2
+
+       sm2P256Square(&z4, z)   // z4 = z ^ 2
+       sm2P256Mul(&z4, &z4, z) // z4 = z ^ 3
+       sm2P256Mul(&z4, &z4, z) // z4 = z ^ 4
+
+       sm2P256Square(&y4, y)   // y4 = y ^ 2
+       sm2P256Mul(&y4, &y4, y) // y4 = y ^ 3
+       sm2P256Mul(&y4, &y4, y) // y4 = y ^ 4
+       sm2P256Scalar(&y4, 8)   // y4 = 8 * y ^ 4
+
+       sm2P256Mul(&s, x, &y2)
+       sm2P256Scalar(&s, 4) // s = 4 * x * y ^ 2
+
+       sm2P256Dup(&m, &x2)
+       sm2P256Scalar(&m, 3)
+       sm2P256Mul(&az4, &sm2P256.a, &z4)
+       sm2P256Add(&m, &m, &az4) // m = 3 * x ^ 2 + a * z ^ 4
+
+       sm2P256Square(&m2, &m) // m2 = m ^ 2
+
+       sm2P256Add(z3, y, z)
+       sm2P256Square(z3, z3)
+       sm2P256Sub(z3, z3, &z2)
+       sm2P256Sub(z3, z3, &y2) // z' = (y + z) ^2 - z ^ 2 - y ^ 2
+
+       sm2P256Sub(x3, &m2, &s)
+       sm2P256Sub(x3, x3, &s) // x' = m2 - 2 * s
+
+       sm2P256Sub(y3, &s, x3)
+       sm2P256Mul(y3, y3, &m)
+       sm2P256Sub(y3, y3, &y4) // y' = m * (s - x') - 8 * y ^ 4
+}
+
+// p256Zero31 is 0 mod p.
+var sm2P256Zero31 = sm2P256FieldElement{0x7FFFFFF8, 0x3FFFFFFC, 0x800003FC, 0x3FFFDFFC, 0x7FFFFFFC, 0x3FFFFFFC, 0x7FFFFFFC, 0x37FFFFFC, 0x7FFFFFFC}
+
+// c = a + b
+func sm2P256Add(c, a, b *sm2P256FieldElement) {
+       carry := uint32(0)
+       for i := 0; ; i++ {
+               c[i] = a[i] + b[i]
+               c[i] += carry
+               carry = c[i] >> 29
+               c[i] &= bottom29Bits
+               i++
+               if i == 9 {
+                       break
+               }
+               c[i] = a[i] + b[i]
+               c[i] += carry
+               carry = c[i] >> 28
+               c[i] &= bottom28Bits
+       }
+       sm2P256ReduceCarry(c, carry)
+}
+
+// c = a - b
+func sm2P256Sub(c, a, b *sm2P256FieldElement) {
+       var carry uint32
+
+       for i := 0; ; i++ {
+               c[i] = a[i] - b[i]
+               c[i] += sm2P256Zero31[i]
+               c[i] += carry
+               carry = c[i] >> 29
+               c[i] &= bottom29Bits
+               i++
+               if i == 9 {
+                       break
+               }
+               c[i] = a[i] - b[i]
+               c[i] += sm2P256Zero31[i]
+               c[i] += carry
+               carry = c[i] >> 28
+               c[i] &= bottom28Bits
+       }
+       sm2P256ReduceCarry(c, carry)
+}
+
+// c = a * b
+func sm2P256Mul(c, a, b *sm2P256FieldElement) {
+       var tmp sm2P256LargeFieldElement
+
+       tmp[0] = uint64(a[0]) * uint64(b[0])
+       tmp[1] = uint64(a[0])*(uint64(b[1])<<0) +
+               uint64(a[1])*(uint64(b[0])<<0)
+       tmp[2] = uint64(a[0])*(uint64(b[2])<<0) +
+               uint64(a[1])*(uint64(b[1])<<1) +
+               uint64(a[2])*(uint64(b[0])<<0)
+       tmp[3] = uint64(a[0])*(uint64(b[3])<<0) +
+               uint64(a[1])*(uint64(b[2])<<0) +
+               uint64(a[2])*(uint64(b[1])<<0) +
+               uint64(a[3])*(uint64(b[0])<<0)
+       tmp[4] = uint64(a[0])*(uint64(b[4])<<0) +
+               uint64(a[1])*(uint64(b[3])<<1) +
+               uint64(a[2])*(uint64(b[2])<<0) +
+               uint64(a[3])*(uint64(b[1])<<1) +
+               uint64(a[4])*(uint64(b[0])<<0)
+       tmp[5] = uint64(a[0])*(uint64(b[5])<<0) +
+               uint64(a[1])*(uint64(b[4])<<0) +
+               uint64(a[2])*(uint64(b[3])<<0) +
+               uint64(a[3])*(uint64(b[2])<<0) +
+               uint64(a[4])*(uint64(b[1])<<0) +
+               uint64(a[5])*(uint64(b[0])<<0)
+       tmp[6] = uint64(a[0])*(uint64(b[6])<<0) +
+               uint64(a[1])*(uint64(b[5])<<1) +
+               uint64(a[2])*(uint64(b[4])<<0) +
+               uint64(a[3])*(uint64(b[3])<<1) +
+               uint64(a[4])*(uint64(b[2])<<0) +
+               uint64(a[5])*(uint64(b[1])<<1) +
+               uint64(a[6])*(uint64(b[0])<<0)
+       tmp[7] = uint64(a[0])*(uint64(b[7])<<0) +
+               uint64(a[1])*(uint64(b[6])<<0) +
+               uint64(a[2])*(uint64(b[5])<<0) +
+               uint64(a[3])*(uint64(b[4])<<0) +
+               uint64(a[4])*(uint64(b[3])<<0) +
+               uint64(a[5])*(uint64(b[2])<<0) +
+               uint64(a[6])*(uint64(b[1])<<0) +
+               uint64(a[7])*(uint64(b[0])<<0)
+       // tmp[8] has the greatest value but doesn't overflow. See logic in
+       // p256Square.
+       tmp[8] = uint64(a[0])*(uint64(b[8])<<0) +
+               uint64(a[1])*(uint64(b[7])<<1) +
+               uint64(a[2])*(uint64(b[6])<<0) +
+               uint64(a[3])*(uint64(b[5])<<1) +
+               uint64(a[4])*(uint64(b[4])<<0) +
+               uint64(a[5])*(uint64(b[3])<<1) +
+               uint64(a[6])*(uint64(b[2])<<0) +
+               uint64(a[7])*(uint64(b[1])<<1) +
+               uint64(a[8])*(uint64(b[0])<<0)
+       tmp[9] = uint64(a[1])*(uint64(b[8])<<0) +
+               uint64(a[2])*(uint64(b[7])<<0) +
+               uint64(a[3])*(uint64(b[6])<<0) +
+               uint64(a[4])*(uint64(b[5])<<0) +
+               uint64(a[5])*(uint64(b[4])<<0) +
+               uint64(a[6])*(uint64(b[3])<<0) +
+               uint64(a[7])*(uint64(b[2])<<0) +
+               uint64(a[8])*(uint64(b[1])<<0)
+       tmp[10] = uint64(a[2])*(uint64(b[8])<<0) +
+               uint64(a[3])*(uint64(b[7])<<1) +
+               uint64(a[4])*(uint64(b[6])<<0) +
+               uint64(a[5])*(uint64(b[5])<<1) +
+               uint64(a[6])*(uint64(b[4])<<0) +
+               uint64(a[7])*(uint64(b[3])<<1) +
+               uint64(a[8])*(uint64(b[2])<<0)
+       tmp[11] = uint64(a[3])*(uint64(b[8])<<0) +
+               uint64(a[4])*(uint64(b[7])<<0) +
+               uint64(a[5])*(uint64(b[6])<<0) +
+               uint64(a[6])*(uint64(b[5])<<0) +
+               uint64(a[7])*(uint64(b[4])<<0) +
+               uint64(a[8])*(uint64(b[3])<<0)
+       tmp[12] = uint64(a[4])*(uint64(b[8])<<0) +
+               uint64(a[5])*(uint64(b[7])<<1) +
+               uint64(a[6])*(uint64(b[6])<<0) +
+               uint64(a[7])*(uint64(b[5])<<1) +
+               uint64(a[8])*(uint64(b[4])<<0)
+       tmp[13] = uint64(a[5])*(uint64(b[8])<<0) +
+               uint64(a[6])*(uint64(b[7])<<0) +
+               uint64(a[7])*(uint64(b[6])<<0) +
+               uint64(a[8])*(uint64(b[5])<<0)
+       tmp[14] = uint64(a[6])*(uint64(b[8])<<0) +
+               uint64(a[7])*(uint64(b[7])<<1) +
+               uint64(a[8])*(uint64(b[6])<<0)
+       tmp[15] = uint64(a[7])*(uint64(b[8])<<0) +
+               uint64(a[8])*(uint64(b[7])<<0)
+       tmp[16] = uint64(a[8]) * (uint64(b[8]) << 0)
+       sm2P256ReduceDegree(c, &tmp)
+}
+
+// b = a * a
+func sm2P256Square(b, a *sm2P256FieldElement) {
+       var tmp sm2P256LargeFieldElement
+
+       tmp[0] = uint64(a[0]) * uint64(a[0])
+       tmp[1] = uint64(a[0]) * (uint64(a[1]) << 1)
+       tmp[2] = uint64(a[0])*(uint64(a[2])<<1) +
+               uint64(a[1])*(uint64(a[1])<<1)
+       tmp[3] = uint64(a[0])*(uint64(a[3])<<1) +
+               uint64(a[1])*(uint64(a[2])<<1)
+       tmp[4] = uint64(a[0])*(uint64(a[4])<<1) +
+               uint64(a[1])*(uint64(a[3])<<2) +
+               uint64(a[2])*uint64(a[2])
+       tmp[5] = uint64(a[0])*(uint64(a[5])<<1) +
+               uint64(a[1])*(uint64(a[4])<<1) +
+               uint64(a[2])*(uint64(a[3])<<1)
+       tmp[6] = uint64(a[0])*(uint64(a[6])<<1) +
+               uint64(a[1])*(uint64(a[5])<<2) +
+               uint64(a[2])*(uint64(a[4])<<1) +
+               uint64(a[3])*(uint64(a[3])<<1)
+       tmp[7] = uint64(a[0])*(uint64(a[7])<<1) +
+               uint64(a[1])*(uint64(a[6])<<1) +
+               uint64(a[2])*(uint64(a[5])<<1) +
+               uint64(a[3])*(uint64(a[4])<<1)
+       // tmp[8] has the greatest value of 2**61 + 2**60 + 2**61 + 2**60 + 2**60,
+       // which is < 2**64 as required.
+       tmp[8] = uint64(a[0])*(uint64(a[8])<<1) +
+               uint64(a[1])*(uint64(a[7])<<2) +
+               uint64(a[2])*(uint64(a[6])<<1) +
+               uint64(a[3])*(uint64(a[5])<<2) +
+               uint64(a[4])*uint64(a[4])
+       tmp[9] = uint64(a[1])*(uint64(a[8])<<1) +
+               uint64(a[2])*(uint64(a[7])<<1) +
+               uint64(a[3])*(uint64(a[6])<<1) +
+               uint64(a[4])*(uint64(a[5])<<1)
+       tmp[10] = uint64(a[2])*(uint64(a[8])<<1) +
+               uint64(a[3])*(uint64(a[7])<<2) +
+               uint64(a[4])*(uint64(a[6])<<1) +
+               uint64(a[5])*(uint64(a[5])<<1)
+       tmp[11] = uint64(a[3])*(uint64(a[8])<<1) +
+               uint64(a[4])*(uint64(a[7])<<1) +
+               uint64(a[5])*(uint64(a[6])<<1)
+       tmp[12] = uint64(a[4])*(uint64(a[8])<<1) +
+               uint64(a[5])*(uint64(a[7])<<2) +
+               uint64(a[6])*uint64(a[6])
+       tmp[13] = uint64(a[5])*(uint64(a[8])<<1) +
+               uint64(a[6])*(uint64(a[7])<<1)
+       tmp[14] = uint64(a[6])*(uint64(a[8])<<1) +
+               uint64(a[7])*(uint64(a[7])<<1)
+       tmp[15] = uint64(a[7]) * (uint64(a[8]) << 1)
+       tmp[16] = uint64(a[8]) * uint64(a[8])
+       sm2P256ReduceDegree(b, &tmp)
+}
+
+// nonZeroToAllOnes returns:
+//   0xffffffff for 0 < x <= 2**31
+//   0 for x == 0 or x > 2**31.
+func nonZeroToAllOnes(x uint32) uint32 {
+       return ((x - 1) >> 31) - 1
+}
+
+var sm2P256Carry = [8 * 9]uint32{
+       0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+       0x2, 0x0, 0x1FFFFF00, 0x7FF, 0x0, 0x0, 0x0, 0x2000000, 0x0,
+       0x4, 0x0, 0x1FFFFE00, 0xFFF, 0x0, 0x0, 0x0, 0x4000000, 0x0,
+       0x6, 0x0, 0x1FFFFD00, 0x17FF, 0x0, 0x0, 0x0, 0x6000000, 0x0,
+       0x8, 0x0, 0x1FFFFC00, 0x1FFF, 0x0, 0x0, 0x0, 0x8000000, 0x0,
+       0xA, 0x0, 0x1FFFFB00, 0x27FF, 0x0, 0x0, 0x0, 0xA000000, 0x0,
+       0xC, 0x0, 0x1FFFFA00, 0x2FFF, 0x0, 0x0, 0x0, 0xC000000, 0x0,
+       0xE, 0x0, 0x1FFFF900, 0x37FF, 0x0, 0x0, 0x0, 0xE000000, 0x0,
+}
+
+// carry < 2 ^ 3
+func sm2P256ReduceCarry(a *sm2P256FieldElement, carry uint32) {
+       a[0] += sm2P256Carry[carry*9+0]
+       a[2] += sm2P256Carry[carry*9+2]
+       a[3] += sm2P256Carry[carry*9+3]
+       a[7] += sm2P256Carry[carry*9+7]
+}
+
+// 这代码真是丑比了，我也是对自己醉了。。。
+// 你最好别改这个代码，不然你会死的很惨。。
+func sm2P256ReduceDegree(a *sm2P256FieldElement, b *sm2P256LargeFieldElement) {
+       var tmp [18]uint32
+       var carry, x, xMask uint32
+
+       // tmp
+       // 0  | 1  | 2  | 3  | 4  | 5  | 6  | 7  | 8  |  9 | 10 ...
+       // 29 | 28 | 29 | 28 | 29 | 28 | 29 | 28 | 29 | 28 | 29 ...
+       tmp[0] = uint32(b[0]) & bottom29Bits
+       tmp[1] = uint32(b[0]) >> 29
+       tmp[1] |= (uint32(b[0]>>32) << 3) & bottom28Bits
+       tmp[1] += uint32(b[1]) & bottom28Bits
+       carry = tmp[1] >> 28
+       tmp[1] &= bottom28Bits
+       for i := 2; i < 17; i++ {
+               tmp[i] = (uint32(b[i-2] >> 32)) >> 25
+               tmp[i] += (uint32(b[i-1])) >> 28
+               tmp[i] += (uint32(b[i-1]>>32) << 4) & bottom29Bits
+               tmp[i] += uint32(b[i]) & bottom29Bits
+               tmp[i] += carry
+               carry = tmp[i] >> 29
+               tmp[i] &= bottom29Bits
+
+               i++
+               if i == 17 {
+                       break
+               }
+               tmp[i] = uint32(b[i-2]>>32) >> 25
+               tmp[i] += uint32(b[i-1]) >> 29
+               tmp[i] += ((uint32(b[i-1] >> 32)) << 3) & bottom28Bits
+               tmp[i] += uint32(b[i]) & bottom28Bits
+               tmp[i] += carry
+               carry = tmp[i] >> 28
+               tmp[i] &= bottom28Bits
+       }
+       tmp[17] = uint32(b[15]>>32) >> 25
+       tmp[17] += uint32(b[16]) >> 29
+       tmp[17] += uint32(b[16]>>32) << 3
+       tmp[17] += carry
+
+       for i := 0; ; i += 2 {
+
+               tmp[i+1] += tmp[i] >> 29
+               x = tmp[i] & bottom29Bits
+               tmp[i] = 0
+               if x > 0 {
+                       set4 := uint32(0)
+                       set7 := uint32(0)
+                       xMask = nonZeroToAllOnes(x)
+                       tmp[i+2] += (x << 7) & bottom29Bits
+                       tmp[i+3] += x >> 22
+                       if tmp[i+3] < 0x10000000 {
+                               set4 = 1
+                               tmp[i+3] += 0x10000000 & xMask
+                               tmp[i+3] -= (x << 10) & bottom28Bits
+                       } else {
+                               tmp[i+3] -= (x << 10) & bottom28Bits
+                       }
+                       if tmp[i+4] < 0x20000000 {
+                               tmp[i+4] += 0x20000000 & xMask
+                               tmp[i+4] -= set4 // 借位
+                               tmp[i+4] -= x >> 18
+                               if tmp[i+5] < 0x10000000 {
+                                       tmp[i+5] += 0x10000000 & xMask
+                                       tmp[i+5] -= 1 // 借位
+                                       if tmp[i+6] < 0x20000000 {
+                                               set7 = 1
+                                               tmp[i+6] += 0x20000000 & xMask
+                                               tmp[i+6] -= 1 // 借位
+                                       } else {
+                                               tmp[i+6] -= 1 // 借位
+                                       }
+                               } else {
+                                       tmp[i+5] -= 1
+                               }
+                       } else {
+                               tmp[i+4] -= set4 // 借位
+                               tmp[i+4] -= x >> 18
+                       }
+                       if tmp[i+7] < 0x10000000 {
+                               tmp[i+7] += 0x10000000 & xMask
+                               tmp[i+7] -= set7
+                               tmp[i+7] -= (x << 24) & bottom28Bits
+                               tmp[i+8] += (x << 28) & bottom29Bits
+                               if tmp[i+8] < 0x20000000 {
+                                       tmp[i+8] += 0x20000000 & xMask
+                                       tmp[i+8] -= 1
+                                       tmp[i+8] -= x >> 4
+                                       tmp[i+9] += ((x >> 1) - 1) & xMask
+                               } else {
+                                       tmp[i+8] -= 1
+                                       tmp[i+8] -= x >> 4
+                                       tmp[i+9] += (x >> 1) & xMask
+                               }
+                       } else {
+                               tmp[i+7] -= set7 // 借位
+                               tmp[i+7] -= (x << 24) & bottom28Bits
+                               tmp[i+8] += (x << 28) & bottom29Bits
+                               if tmp[i+8] < 0x20000000 {
+                                       tmp[i+8] += 0x20000000 & xMask
+                                       tmp[i+8] -= x >> 4
+                                       tmp[i+9] += ((x >> 1) - 1) & xMask
+                               } else {
+                                       tmp[i+8] -= x >> 4
+                                       tmp[i+9] += (x >> 1) & xMask
+                               }
+                       }
+
+               }
+
+               if i+1 == 9 {
+                       break
+               }
+
+               tmp[i+2] += tmp[i+1] >> 28
+               x = tmp[i+1] & bottom28Bits
+               tmp[i+1] = 0
+               if x > 0 {
+                       set5 := uint32(0)
+                       set8 := uint32(0)
+                       set9 := uint32(0)
+                       xMask = nonZeroToAllOnes(x)
+                       tmp[i+3] += (x << 7) & bottom28Bits
+                       tmp[i+4] += x >> 21
+                       if tmp[i+4] < 0x20000000 {
+                               set5 = 1
+                               tmp[i+4] += 0x20000000 & xMask
+                               tmp[i+4] -= (x << 11) & bottom29Bits
+                       } else {
+                               tmp[i+4] -= (x << 11) & bottom29Bits
+                       }
+                       if tmp[i+5] < 0x10000000 {
+                               tmp[i+5] += 0x10000000 & xMask
+                               tmp[i+5] -= set5 // 借位
+                               tmp[i+5] -= x >> 18
+                               if tmp[i+6] < 0x20000000 {
+                                       tmp[i+6] += 0x20000000 & xMask
+                                       tmp[i+6] -= 1 // 借位
+                                       if tmp[i+7] < 0x10000000 {
+                                               set8 = 1
+                                               tmp[i+7] += 0x10000000 & xMask
+                                               tmp[i+7] -= 1 // 借位
+                                       } else {
+                                               tmp[i+7] -= 1 // 借位
+                                       }
+                               } else {
+                                       tmp[i+6] -= 1 // 借位
+                               }
+                       } else {
+                               tmp[i+5] -= set5 // 借位
+                               tmp[i+5] -= x >> 18
+                       }
+                       if tmp[i+8] < 0x20000000 {
+                               set9 = 1
+                               tmp[i+8] += 0x20000000 & xMask
+                               tmp[i+8] -= set8
+                               tmp[i+8] -= (x << 25) & bottom29Bits
+                       } else {
+                               tmp[i+8] -= set8
+                               tmp[i+8] -= (x << 25) & bottom29Bits
+                       }
+                       if tmp[i+9] < 0x10000000 {
+                               tmp[i+9] += 0x10000000 & xMask
+                               tmp[i+9] -= set9 // 借位
+                               tmp[i+9] -= x >> 4
+                               tmp[i+10] += (x - 1) & xMask
+                       } else {
+                               tmp[i+9] -= set9 // 借位
+                               tmp[i+9] -= x >> 4
+                               tmp[i+10] += x & xMask
+                       }
+               }
+       }
+
+       carry = uint32(0)
+       for i := 0; i < 8; i++ {
+               a[i] = tmp[i+9]
+               a[i] += carry
+               a[i] += (tmp[i+10] << 28) & bottom29Bits
+               carry = a[i] >> 29
+               a[i] &= bottom29Bits
+
+               i++
+               a[i] = tmp[i+9] >> 1
+               a[i] += carry
+               carry = a[i] >> 28
+               a[i] &= bottom28Bits
+       }
+       a[8] = tmp[17]
+       a[8] += carry
+       carry = a[8] >> 29
+       a[8] &= bottom29Bits
+       sm2P256ReduceCarry(a, carry)
+}
+
+// b = a
+func sm2P256Dup(b, a *sm2P256FieldElement) {
+       *b = *a
+}
+
+// X = a * R mod P
+func sm2P256FromBig(X *sm2P256FieldElement, a *big.Int) {
+       x := new(big.Int).Lsh(a, 257)
+       x.Mod(x, sm2P256.P)
+       for i := 0; i < 9; i++ {
+               if bits := x.Bits(); len(bits) > 0 {
+                       X[i] = uint32(bits[0]) & bottom29Bits
+               } else {
+                       X[i] = 0
+               }
+               x.Rsh(x, 29)
+               i++
+               if i == 9 {
+                       break
+               }
+               if bits := x.Bits(); len(bits) > 0 {
+                       X[i] = uint32(bits[0]) & bottom28Bits
+               } else {
+                       X[i] = 0
+               }
+               x.Rsh(x, 28)
+       }
+}
+
+// X = r * R mod P
+// r = X * R' mod P
+func sm2P256ToBig(X *sm2P256FieldElement) *big.Int {
+       r, tm := new(big.Int), new(big.Int)
+       r.SetInt64(int64(X[8]))
+       for i := 7; i >= 0; i-- {
+               if (i & 1) == 0 {
+                       r.Lsh(r, 29)
+               } else {
+                       r.Lsh(r, 28)
+               }
+               tm.SetInt64(int64(X[i]))
+               r.Add(r, tm)
+       }
+       r.Mul(r, sm2P256.RInverse)
+       r.Mod(r, sm2P256.P)
+       return r
+}

diff --git a/vendor/github.com/bytom/crypto/sm2/pkcs1.go b/vendor/github.com/bytom/crypto/sm2/pkcs1.go
new file mode 100644 (file)
index 0000000..e1cc478
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/sm2/pkcs1.go
@@ -0,0 +1,117 @@
+package sm2
+
+import (
+       "crypto/rsa"
+       "encoding/asn1"
+       "errors"
+       "math/big"
+)
+
+// pkcs1PrivateKey is a structure which mirrors the PKCS#1 ASN.1 for an RSA private key.
+type pkcs1PrivateKey struct {
+       Version int
+       N       *big.Int
+       E       int
+       D       *big.Int
+       P       *big.Int
+       Q       *big.Int
+       // We ignore these values, if present, because rsa will calculate them.
+       Dp   *big.Int `asn1:"optional"`
+       Dq   *big.Int `asn1:"optional"`
+       Qinv *big.Int `asn1:"optional"`
+
+       AdditionalPrimes []pkcs1AdditionalRSAPrime `asn1:"optional,omitempty"`
+}
+
+type pkcs1AdditionalRSAPrime struct {
+       Prime *big.Int
+
+       // We ignore these values because rsa will calculate them.
+       Exp   *big.Int
+       Coeff *big.Int
+}
+
+// ParsePKCS1PrivateKey returns an RSA private key from its ASN.1 PKCS#1 DER encoded form.
+func ParsePKCS1PrivateKey(der []byte) (*rsa.PrivateKey, error) {
+       var priv pkcs1PrivateKey
+       rest, err := asn1.Unmarshal(der, &priv)
+       if len(rest) > 0 {
+               return nil, asn1.SyntaxError{Msg: "trailing data"}
+       }
+       if err != nil {
+               return nil, err
+       }
+
+       if priv.Version > 1 {
+               return nil, errors.New("x509: unsupported private key version")
+       }
+
+       if priv.N.Sign() <= 0 || priv.D.Sign() <= 0 || priv.P.Sign() <= 0 || priv.Q.Sign() <= 0 {
+               return nil, errors.New("x509: private key contains zero or negative value")
+       }
+
+       key := new(rsa.PrivateKey)
+       key.PublicKey = rsa.PublicKey{
+               E: priv.E,
+               N: priv.N,
+       }
+
+       key.D = priv.D
+       key.Primes = make([]*big.Int, 2+len(priv.AdditionalPrimes))
+       key.Primes[0] = priv.P
+       key.Primes[1] = priv.Q
+       for i, a := range priv.AdditionalPrimes {
+               if a.Prime.Sign() <= 0 {
+                       return nil, errors.New("x509: private key contains zero or negative prime")
+               }
+               key.Primes[i+2] = a.Prime
+               // We ignore the other two values because rsa will calculate
+               // them as needed.
+       }
+
+       err = key.Validate()
+       if err != nil {
+               return nil, err
+       }
+       key.Precompute()
+
+       return key, nil
+}
+
+// MarshalPKCS1PrivateKey converts a private key to ASN.1 DER encoded form.
+func MarshalPKCS1PrivateKey(key *rsa.PrivateKey) []byte {
+       key.Precompute()
+
+       version := 0
+       if len(key.Primes) > 2 {
+               version = 1
+       }
+
+       priv := pkcs1PrivateKey{
+               Version: version,
+               N:       key.N,
+               E:       key.PublicKey.E,
+               D:       key.D,
+               P:       key.Primes[0],
+               Q:       key.Primes[1],
+               Dp:      key.Precomputed.Dp,
+               Dq:      key.Precomputed.Dq,
+               Qinv:    key.Precomputed.Qinv,
+       }
+
+       priv.AdditionalPrimes = make([]pkcs1AdditionalRSAPrime, len(key.Precomputed.CRTValues))
+       for i, values := range key.Precomputed.CRTValues {
+               priv.AdditionalPrimes[i].Prime = key.Primes[2+i]
+               priv.AdditionalPrimes[i].Exp = values.Exp
+               priv.AdditionalPrimes[i].Coeff = values.Coeff
+       }
+
+       b, _ := asn1.Marshal(priv)
+       return b
+}
+
+// rsaPublicKey reflects the ASN.1 structure of a PKCS#1 public key.
+type rsaPublicKey struct {
+       N *big.Int
+       E int
+}

diff --git a/vendor/github.com/bytom/crypto/sm2/pkcs8.go b/vendor/github.com/bytom/crypto/sm2/pkcs8.go
new file mode 100644 (file)
index 0000000..22342af
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/sm2/pkcs8.go
@@ -0,0 +1,473 @@
+package sm2
+
+import (
+       "crypto/aes"
+       "crypto/cipher"
+       "crypto/elliptic"
+       "crypto/hmac"
+       "crypto/md5"
+       "crypto/rand"
+       "crypto/sha1"
+       "crypto/sha256"
+       "crypto/sha512"
+       "crypto/x509/pkix"
+       "encoding/asn1"
+       "encoding/pem"
+       "errors"
+       "hash"
+       "io/ioutil"
+       "math/big"
+       "os"
+       "reflect"
+)
+
+/*
+ * reference to RFC5959 and RFC2898
+ */
+
+var (
+       oidPBES1  = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 5, 3}  // pbeWithMD5AndDES-CBC(PBES1)
+       oidPBES2  = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 5, 13} // id-PBES2(PBES2)
+       oidPBKDF2 = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 5, 12} // id-PBKDF2
+
+       oidKEYMD5    = asn1.ObjectIdentifier{1, 2, 840, 113549, 2, 5}
+       oidKEYSHA1   = asn1.ObjectIdentifier{1, 2, 840, 113549, 2, 7}
+       oidKEYSHA256 = asn1.ObjectIdentifier{1, 2, 840, 113549, 2, 9}
+       oidKEYSHA512 = asn1.ObjectIdentifier{1, 2, 840, 113549, 2, 11}
+
+       oidAES128CBC = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 2}
+       oidAES256CBC = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 42}
+
+       oidSM2 = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1}
+)
+
+// reference to https://www.rfc-editor.org/rfc/rfc5958.txt
+type PrivateKeyInfo struct {
+       Version             int // v1 or v2
+       PrivateKeyAlgorithm []asn1.ObjectIdentifier
+       PrivateKey          []byte
+}
+
+// reference to https://www.rfc-editor.org/rfc/rfc5958.txt
+type EncryptedPrivateKeyInfo struct {
+       EncryptionAlgorithm Pbes2Algorithms
+       EncryptedData       []byte
+}
+
+// reference to https://www.ietf.org/rfc/rfc2898.txt
+type Pbes2Algorithms struct {
+       IdPBES2     asn1.ObjectIdentifier
+       Pbes2Params Pbes2Params
+}
+
+// reference to https://www.ietf.org/rfc/rfc2898.txt
+type Pbes2Params struct {
+       KeyDerivationFunc Pbes2KDfs // PBES2-KDFs
+       EncryptionScheme  Pbes2Encs // PBES2-Encs
+}
+
+// reference to https://www.ietf.org/rfc/rfc2898.txt
+type Pbes2KDfs struct {
+       IdPBKDF2    asn1.ObjectIdentifier
+       Pkdf2Params Pkdf2Params
+}
+
+type Pbes2Encs struct {
+       EncryAlgo asn1.ObjectIdentifier
+       IV        []byte
+}
+
+// reference to https://www.ietf.org/rfc/rfc2898.txt
+type Pkdf2Params struct {
+       Salt           []byte
+       IterationCount int
+       Prf            pkix.AlgorithmIdentifier
+}
+
+type sm2PrivateKey struct {
+       Version       int
+       PrivateKey    []byte
+       NamedCurveOID asn1.ObjectIdentifier `asn1:"optional,explicit,tag:0"`
+       PublicKey     asn1.BitString        `asn1:"optional,explicit,tag:1"`
+}
+
+type pkcs8 struct {
+       Version    int
+       Algo       pkix.AlgorithmIdentifier
+       PrivateKey []byte
+}
+
+// copy from crypto/pbkdf2.go
+func pbkdf(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte {
+       prf := hmac.New(h, password)
+       hashLen := prf.Size()
+       numBlocks := (keyLen + hashLen - 1) / hashLen
+
+       var buf [4]byte
+       dk := make([]byte, 0, numBlocks*hashLen)
+       U := make([]byte, hashLen)
+       for block := 1; block <= numBlocks; block++ {
+               // N.B.: || means concatenation, ^ means XOR
+               // for each block T_i = U_1 ^ U_2 ^ ... ^ U_iter
+               // U_1 = PRF(password, salt || uint(i))
+               prf.Reset()
+               prf.Write(salt)
+               buf[0] = byte(block >> 24)
+               buf[1] = byte(block >> 16)
+               buf[2] = byte(block >> 8)
+               buf[3] = byte(block)
+               prf.Write(buf[:4])
+               dk = prf.Sum(dk)
+               T := dk[len(dk)-hashLen:]
+               copy(U, T)
+
+               // U_n = PRF(password, U_(n-1))
+               for n := 2; n <= iter; n++ {
+                       prf.Reset()
+                       prf.Write(U)
+                       U = U[:0]
+                       U = prf.Sum(U)
+                       for x := range U {
+                               T[x] ^= U[x]
+                       }
+               }
+       }
+       return dk[:keyLen]
+}
+
+func ParseSm2PublicKey(der []byte) (*PublicKey, error) {
+       var pubkey pkixPublicKey
+
+       if _, err := asn1.Unmarshal(der, &pubkey); err != nil {
+               return nil, err
+       }
+       if !reflect.DeepEqual(pubkey.Algo.Algorithm, oidSM2) {
+               return nil, errors.New("x509: not sm2 elliptic curve")
+       }
+       curve := P256Sm2()
+       x, y := elliptic.Unmarshal(curve, pubkey.BitString.Bytes)
+       pub := PublicKey{
+               Curve: curve,
+               X:     x,
+               Y:     y,
+       }
+       return &pub, nil
+}
+
+func MarshalSm2PublicKey(key *PublicKey) ([]byte, error) {
+       var r pkixPublicKey
+       var algo pkix.AlgorithmIdentifier
+
+       algo.Algorithm = oidSM2
+       algo.Parameters.Class = 0
+       algo.Parameters.Tag = 6
+       algo.Parameters.IsCompound = false
+       algo.Parameters.FullBytes = []byte{6, 8, 42, 129, 28, 207, 85, 1, 130, 45} // asn1.Marshal(asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 301})
+       r.Algo = algo
+       r.BitString = asn1.BitString{Bytes: elliptic.Marshal(key.Curve, key.X, key.Y)}
+       return asn1.Marshal(r)
+}
+
+func ParseSm2PrivateKey(der []byte) (*PrivateKey, error) {
+       var privKey sm2PrivateKey
+
+       if _, err := asn1.Unmarshal(der, &privKey); err != nil {
+               return nil, errors.New("x509: failed to parse SM2 private key: " + err.Error())
+       }
+       curve := P256Sm2()
+       k := new(big.Int).SetBytes(privKey.PrivateKey)
+       curveOrder := curve.Params().N
+       if k.Cmp(curveOrder) >= 0 {
+               return nil, errors.New("x509: invalid elliptic curve private key value")
+       }
+       priv := new(PrivateKey)
+       priv.Curve = curve
+       priv.D = k
+       privateKey := make([]byte, (curveOrder.BitLen()+7)/8)
+       for len(privKey.PrivateKey) > len(privateKey) {
+               if privKey.PrivateKey[0] != 0 {
+                       return nil, errors.New("x509: invalid private key length")
+               }
+               privKey.PrivateKey = privKey.PrivateKey[1:]
+       }
+       copy(privateKey[len(privateKey)-len(privKey.PrivateKey):], privKey.PrivateKey)
+       priv.X, priv.Y = curve.ScalarBaseMult(privateKey)
+       return priv, nil
+}
+
+func ParsePKCS8UnecryptedPrivateKey(der []byte) (*PrivateKey, error) {
+       var privKey pkcs8
+
+       if _, err := asn1.Unmarshal(der, &privKey); err != nil {
+               return nil, err
+       }
+       if !reflect.DeepEqual(privKey.Algo.Algorithm, oidSM2) {
+               return nil, errors.New("x509: not sm2 elliptic curve")
+       }
+       return ParseSm2PrivateKey(privKey.PrivateKey)
+}
+
+func ParsePKCS8EcryptedPrivateKey(der, pwd []byte) (*PrivateKey, error) {
+       var keyInfo EncryptedPrivateKeyInfo
+
+       _, err := asn1.Unmarshal(der, &keyInfo)
+       if err != nil {
+               return nil, errors.New("x509: unknown format")
+       }
+       if !reflect.DeepEqual(keyInfo.EncryptionAlgorithm.IdPBES2, oidPBES2) {
+               return nil, errors.New("x509: only support PBES2")
+       }
+       encryptionScheme := keyInfo.EncryptionAlgorithm.Pbes2Params.EncryptionScheme
+       keyDerivationFunc := keyInfo.EncryptionAlgorithm.Pbes2Params.KeyDerivationFunc
+       if !reflect.DeepEqual(keyDerivationFunc.IdPBKDF2, oidPBKDF2) {
+               return nil, errors.New("x509: only support PBKDF2")
+       }
+       pkdf2Params := keyDerivationFunc.Pkdf2Params
+       if !reflect.DeepEqual(encryptionScheme.EncryAlgo, oidAES128CBC) &&
+               !reflect.DeepEqual(encryptionScheme.EncryAlgo, oidAES256CBC) {
+               return nil, errors.New("x509: unknow encryption algorithm")
+       }
+       iv := encryptionScheme.IV
+       salt := pkdf2Params.Salt
+       iter := pkdf2Params.IterationCount
+       encryptedKey := keyInfo.EncryptedData
+       var key []byte
+       switch {
+       case pkdf2Params.Prf.Algorithm.Equal(oidKEYMD5):
+               key = pbkdf(pwd, salt, iter, 32, md5.New)
+               break
+       case pkdf2Params.Prf.Algorithm.Equal(oidKEYSHA1):
+               key = pbkdf(pwd, salt, iter, 32, sha1.New)
+               break
+       case pkdf2Params.Prf.Algorithm.Equal(oidKEYSHA256):
+               key = pbkdf(pwd, salt, iter, 32, sha256.New)
+               break
+       case pkdf2Params.Prf.Algorithm.Equal(oidKEYSHA512):
+               key = pbkdf(pwd, salt, iter, 32, sha512.New)
+               break
+       default:
+               return nil, errors.New("x509: unknown hash algorithm")
+       }
+       block, err := aes.NewCipher(key)
+       if err != nil {
+               return nil, err
+       }
+       mode := cipher.NewCBCDecrypter(block, iv)
+       mode.CryptBlocks(encryptedKey, encryptedKey)
+       rKey, err := ParsePKCS8UnecryptedPrivateKey(encryptedKey)
+       if err != nil {
+               return nil, errors.New("pkcs8: incorrect password")
+       }
+       return rKey, nil
+}
+
+func ParsePKCS8PrivateKey(der, pwd []byte) (*PrivateKey, error) {
+       if pwd == nil {
+               return ParsePKCS8UnecryptedPrivateKey(der)
+       }
+       return ParsePKCS8EcryptedPrivateKey(der, pwd)
+}
+
+func MarshalSm2UnecryptedPrivateKey(key *PrivateKey) ([]byte, error) {
+       var r pkcs8
+       var priv sm2PrivateKey
+       var algo pkix.AlgorithmIdentifier
+
+       algo.Algorithm = oidSM2
+       algo.Parameters.Class = 0
+       algo.Parameters.Tag = 6
+       algo.Parameters.IsCompound = false
+       algo.Parameters.FullBytes = []byte{6, 8, 42, 129, 28, 207, 85, 1, 130, 45} // asn1.Marshal(asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 301})
+       priv.Version = 1
+       priv.NamedCurveOID = oidNamedCurveP256SM2
+       priv.PublicKey = asn1.BitString{Bytes: elliptic.Marshal(key.Curve, key.X, key.Y)}
+       priv.PrivateKey = key.D.Bytes()
+       r.Version = 0
+       r.Algo = algo
+       r.PrivateKey, _ = asn1.Marshal(priv)
+       return asn1.Marshal(r)
+}
+
+func MarshalSm2EcryptedPrivateKey(PrivKey *PrivateKey, pwd []byte) ([]byte, error) {
+       der, err := MarshalSm2UnecryptedPrivateKey(PrivKey)
+       if err != nil {
+               return nil, err
+       }
+       iter := 2048
+       salt := make([]byte, 8)
+       iv := make([]byte, 16)
+       rand.Reader.Read(salt)
+       rand.Reader.Read(iv)
+       key := pbkdf(pwd, salt, iter, 32, sha1.New) // 默认是SHA1
+       padding := aes.BlockSize - len(der)%aes.BlockSize
+       if padding > 0 {
+               n := len(der)
+               der = append(der, make([]byte, padding)...)
+               for i := 0; i < padding; i++ {
+                       der[n+i] = byte(padding)
+               }
+       }
+       encryptedKey := make([]byte, len(der))
+       block, err := aes.NewCipher(key)
+       if err != nil {
+               return nil, err
+       }
+       mode := cipher.NewCBCEncrypter(block, iv)
+       mode.CryptBlocks(encryptedKey, der)
+       var algorithmIdentifier pkix.AlgorithmIdentifier
+       algorithmIdentifier.Algorithm = oidKEYSHA1
+       algorithmIdentifier.Parameters.Tag = 5
+       algorithmIdentifier.Parameters.IsCompound = false
+       algorithmIdentifier.Parameters.FullBytes = []byte{5, 0}
+       keyDerivationFunc := Pbes2KDfs{
+               oidPBKDF2,
+               Pkdf2Params{
+                       salt,
+                       iter,
+                       algorithmIdentifier,
+               },
+       }
+       encryptionScheme := Pbes2Encs{
+               oidAES256CBC,
+               iv,
+       }
+       pbes2Algorithms := Pbes2Algorithms{
+               oidPBES2,
+               Pbes2Params{
+                       keyDerivationFunc,
+                       encryptionScheme,
+               },
+       }
+       encryptedPkey := EncryptedPrivateKeyInfo{
+               pbes2Algorithms,
+               encryptedKey,
+       }
+       return asn1.Marshal(encryptedPkey)
+}
+
+func MarshalSm2PrivateKey(key *PrivateKey, pwd []byte) ([]byte, error) {
+       if pwd == nil {
+               return MarshalSm2UnecryptedPrivateKey(key)
+       }
+       return MarshalSm2EcryptedPrivateKey(key, pwd)
+}
+
+func ReadPrivateKeyFromMem(data []byte, pwd []byte) (*PrivateKey, error) {
+       var block *pem.Block
+
+       block, _ = pem.Decode(data)
+       if block == nil {
+               return nil, errors.New("failed to decode private key")
+       }
+       priv, err := ParsePKCS8PrivateKey(block.Bytes, pwd)
+       return priv, err
+}
+
+func ReadPrivateKeyFromPem(FileName string, pwd []byte) (*PrivateKey, error) {
+       data, err := ioutil.ReadFile(FileName)
+       if err != nil {
+               return nil, err
+       }
+       return ReadPrivateKeyFromMem(data, pwd)
+}
+
+func WritePrivateKeytoMem(key *PrivateKey, pwd []byte) ([]byte, error) {
+       var block *pem.Block
+
+       der, err := MarshalSm2PrivateKey(key, pwd)
+       if err != nil {
+               return nil, err
+       }
+       if pwd != nil {
+               block = &pem.Block{
+                       Type:  "ENCRYPTED PRIVATE KEY",
+                       Bytes: der,
+               }
+       } else {
+               block = &pem.Block{
+                       Type:  "PRIVATE KEY",
+                       Bytes: der,
+               }
+       }
+       return pem.EncodeToMemory(block), nil
+}
+
+func WritePrivateKeytoPem(FileName string, key *PrivateKey, pwd []byte) (bool, error) {
+       var block *pem.Block
+
+       der, err := MarshalSm2PrivateKey(key, pwd)
+       if err != nil {
+               return false, err
+       }
+       if pwd != nil {
+               block = &pem.Block{
+                       Type:  "ENCRYPTED PRIVATE KEY",
+                       Bytes: der,
+               }
+       } else {
+               block = &pem.Block{
+                       Type:  "PRIVATE KEY",
+                       Bytes: der,
+               }
+       }
+       file, err := os.Create(FileName)
+       if err != nil {
+               return false, err
+       }
+       defer file.Close()
+       err = pem.Encode(file, block)
+       if err != nil {
+               return false, err
+       }
+       return true, nil
+}
+
+func ReadPublicKeyFromMem(data []byte, _ []byte) (*PublicKey, error) {
+       block, _ := pem.Decode(data)
+       if block == nil || block.Type != "PUBLIC KEY" {
+               return nil, errors.New("failed to decode public key")
+       }
+       pub, err := ParseSm2PublicKey(block.Bytes)
+       return pub, err
+}
+
+func ReadPublicKeyFromPem(FileName string, pwd []byte) (*PublicKey, error) {
+       data, err := ioutil.ReadFile(FileName)
+       if err != nil {
+               return nil, err
+       }
+       return ReadPublicKeyFromMem(data, pwd)
+}
+
+func WritePublicKeytoMem(key *PublicKey, _ []byte) ([]byte, error) {
+       der, err := MarshalSm2PublicKey(key)
+       if err != nil {
+               return nil, err
+       }
+       block := &pem.Block{
+               Type:  "PUBLIC KEY",
+               Bytes: der,
+       }
+       return pem.EncodeToMemory(block), nil
+}
+
+func WritePublicKeytoPem(FileName string, key *PublicKey, _ []byte) (bool, error) {
+       der, err := MarshalSm2PublicKey(key)
+       if err != nil {
+               return false, err
+       }
+       block := &pem.Block{
+               Type:  "PUBLIC KEY",
+               Bytes: der,
+       }
+       file, err := os.Create(FileName)
+       defer file.Close()
+       if err != nil {
+               return false, err
+       }
+       err = pem.Encode(file, block)
+       if err != nil {
+               return false, err
+       }
+       return true, nil
+}

diff --git a/vendor/github.com/bytom/crypto/sm2/sm2.go b/vendor/github.com/bytom/crypto/sm2/sm2.go
new file mode 100644 (file)
index 0000000..8339c9b
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/sm2/sm2.go
@@ -0,0 +1,509 @@
+package sm2
+
+// reference to ecdsa
+import (
+       "bytes"
+       "crypto"
+       "crypto/aes"
+       "crypto/cipher"
+       "crypto/elliptic"
+       "crypto/rand"
+       "crypto/sha512"
+       "encoding/asn1"
+       "encoding/binary"
+       "errors"
+       "io"
+       "math/big"
+
+       "github.com/bytom/crypto/sm3"
+)
+
+const (
+       aesIV = "IV for <SM2> CTR"
+)
+
+type PublicKey struct {
+       elliptic.Curve
+       X, Y *big.Int
+}
+
+type PrivateKey struct {
+       PublicKey
+       D *big.Int
+}
+
+type sm2Signature struct {
+       R, S *big.Int
+}
+
+// The SM2's private key contains the public key
+func (priv *PrivateKey) Public() crypto.PublicKey {
+       return &priv.PublicKey
+}
+
+func SignDigitToSignData(r, s *big.Int) ([]byte, error) {
+       return asn1.Marshal(sm2Signature{r, s})
+}
+
+func SignDataToSignDigit(sign []byte) (*big.Int, *big.Int, error) {
+       var sm2Sign sm2Signature
+
+       _, err := asn1.Unmarshal(sign, &sm2Sign)
+       if err != nil {
+               return nil, nil, err
+       }
+       return sm2Sign.R, sm2Sign.S, nil
+}
+
+// sign format = 30 + len(z) + 02 + len(r) + r + 02 + len(s) + s, z being what follows its size, ie 02+len(r)+r+02+len(s)+s
+func (priv *PrivateKey) Sign(rand io.Reader, msg []byte, opts crypto.SignerOpts) ([]byte, error) {
+       r, s, err := Sign(priv, msg)
+       if err != nil {
+               return nil, err
+       }
+       return asn1.Marshal(sm2Signature{r, s})
+}
+
+func (priv *PrivateKey) Decrypt(data []byte) ([]byte, error) {
+       return Decrypt(priv, data)
+}
+
+func (pub *PublicKey) Verify(msg []byte, sign []byte) bool {
+       var sm2Sign sm2Signature
+
+       _, err := asn1.Unmarshal(sign, &sm2Sign)
+       if err != nil {
+               return false
+       }
+       return Verify(pub, msg, sm2Sign.R, sm2Sign.S)
+}
+
+func (pub *PublicKey) Encrypt(data []byte) ([]byte, error) {
+       return Encrypt(pub, data)
+}
+
+var one = new(big.Int).SetInt64(1)
+
+func intToBytes(x int) []byte {
+       var buf = make([]byte, 4)
+
+       binary.BigEndian.PutUint32(buf, uint32(x))
+       return buf
+}
+
+func kdf(x, y []byte, length int) ([]byte, bool) {
+       var c []byte
+
+       ct := 1
+       h := sm3.New()
+       x = append(x, y...)
+       for i, j := 0, (length+31)/32; i < j; i++ {
+               h.Reset()
+               h.Write(x)
+               h.Write(intToBytes(ct))
+               hash := h.Sum(nil)
+               if i+1 == j && length%32 != 0 {
+                       c = append(c, hash[:length%32]...)
+               } else {
+                       c = append(c, hash...)
+               }
+               ct++
+       }
+       for i := 0; i < length; i++ {
+               if c[i] != 0 {
+                       return c, true
+               }
+       }
+       return c, false
+}
+
+func randFieldElement(c elliptic.Curve, rand io.Reader) (k *big.Int, err error) {
+       params := c.Params()
+       b := make([]byte, params.BitSize/8+8)
+       _, err = io.ReadFull(rand, b)
+       if err != nil {
+               return
+       }
+       k = new(big.Int).SetBytes(b)
+       n := new(big.Int).Sub(params.N, one)
+       k.Mod(k, n)
+       k.Add(k, one)
+       return
+}
+
+func GenerateKey() (*PrivateKey, error) {
+       c := P256Sm2()
+       k, err := randFieldElement(c, rand.Reader)
+       if err != nil {
+               return nil, err
+       }
+       priv := new(PrivateKey)
+       priv.PublicKey.Curve = c
+       priv.D = k
+       priv.PublicKey.X, priv.PublicKey.Y = c.ScalarBaseMult(k.Bytes())
+       return priv, nil
+}
+
+var errZeroParam = errors.New("zero parameter")
+
+func Sign(priv *PrivateKey, hash []byte) (r, s *big.Int, err error) {
+       entropylen := (priv.Curve.Params().BitSize + 7) / 16
+       if entropylen > 32 {
+               entropylen = 32
+       }
+       entropy := make([]byte, entropylen)
+       _, err = io.ReadFull(rand.Reader, entropy)
+       if err != nil {
+               return
+       }
+
+       // Initialize an SHA-512 hash context; digest ...
+       md := sha512.New()
+       md.Write(priv.D.Bytes()) // the private key,
+       md.Write(entropy)        // the entropy,
+       md.Write(hash)           // and the input hash;
+       key := md.Sum(nil)[:32]  // and compute ChopMD-256(SHA-512),
+       // which is an indifferentiable MAC.
+
+       // Create an AES-CTR instance to use as a CSPRNG.
+       block, err := aes.NewCipher(key)
+       if err != nil {
+               return nil, nil, err
+       }
+
+       // Create a CSPRNG that xors a stream of zeros with
+       // the output of the AES-CTR instance.
+       csprng := cipher.StreamReader{
+               R: zeroReader,
+               S: cipher.NewCTR(block, []byte(aesIV)),
+       }
+
+       // See [NSA] 3.4.1
+       c := priv.PublicKey.Curve
+       N := c.Params().N
+       if N.Sign() == 0 {
+               return nil, nil, errZeroParam
+       }
+       var k *big.Int
+       e := new(big.Int).SetBytes(hash)
+       for { // 调整算法细节以实现SM2
+               for {
+                       k, err = randFieldElement(c, csprng)
+                       if err != nil {
+                               r = nil
+                               return
+                       }
+                       r, _ = priv.Curve.ScalarBaseMult(k.Bytes())
+                       r.Add(r, e)
+                       r.Mod(r, N)
+                       if r.Sign() != 0 {
+                               break
+                       }
+                       if t := new(big.Int).Add(r, k); t.Cmp(N) == 0 {
+                               break
+                       }
+               }
+               rD := new(big.Int).Mul(priv.D, r)
+               s = new(big.Int).Sub(k, rD)
+               d1 := new(big.Int).Add(priv.D, one)
+               d1Inv := new(big.Int).ModInverse(d1, N)
+               s.Mul(s, d1Inv)
+               s.Mod(s, N)
+               if s.Sign() != 0 {
+                       break
+               }
+       }
+       return
+}
+
+func Verify(pub *PublicKey, hash []byte, r, s *big.Int) bool {
+       c := pub.Curve
+       N := c.Params().N
+
+       if r.Sign() <= 0 || s.Sign() <= 0 {
+               return false
+       }
+       if r.Cmp(N) >= 0 || s.Cmp(N) >= 0 {
+               return false
+       }
+
+       // 调整算法细节以实现SM2
+       t := new(big.Int).Add(r, s)
+       t.Mod(t, N)
+       if t.Sign() == 0 {
+               return false
+       }
+
+       var x *big.Int
+       x1, y1 := c.ScalarBaseMult(s.Bytes())
+       x2, y2 := c.ScalarMult(pub.X, pub.Y, t.Bytes())
+       x, _ = c.Add(x1, y1, x2, y2)
+
+       e := new(big.Int).SetBytes(hash)
+       x.Add(x, e)
+       x.Mod(x, N)
+       return x.Cmp(r) == 0
+}
+
+func Sm2Sign(priv *PrivateKey, msg, uid []byte) (r, s *big.Int, err error) {
+       za, err := ZA(&priv.PublicKey, uid)
+       if err != nil {
+               return nil, nil, err
+       }
+       e, err := msgHash(za, msg)
+       if err != nil {
+               return nil, nil, err
+       }
+       c := priv.PublicKey.Curve
+       N := c.Params().N
+       if N.Sign() == 0 {
+               return nil, nil, errZeroParam
+       }
+       var k *big.Int
+       for { // 调整算法细节以实现SM2
+               for {
+                       k, err = randFieldElement(c, rand.Reader)
+                       if err != nil {
+                               r = nil
+                               return
+                       }
+                       r, _ = priv.Curve.ScalarBaseMult(k.Bytes())
+                       r.Add(r, e)
+                       r.Mod(r, N)
+                       if r.Sign() != 0 {
+                               break
+                       }
+                       if t := new(big.Int).Add(r, k); t.Cmp(N) == 0 {
+                               break
+                       }
+               }
+               rD := new(big.Int).Mul(priv.D, r)
+               s = new(big.Int).Sub(k, rD)
+               d1 := new(big.Int).Add(priv.D, one)
+               d1Inv := new(big.Int).ModInverse(d1, N)
+               s.Mul(s, d1Inv)
+               s.Mod(s, N)
+               if s.Sign() != 0 {
+                       break
+               }
+       }
+       return
+}
+
+func Sm2Verify(pub *PublicKey, msg, uid []byte, r, s *big.Int) bool {
+       c := pub.Curve
+       N := c.Params().N
+       one := new(big.Int).SetInt64(1)
+       if r.Cmp(one) < 0 || s.Cmp(one) < 0 {
+               return false
+       }
+       if r.Cmp(N) >= 0 || s.Cmp(N) >= 0 {
+               return false
+       }
+       za, err := ZA(pub, uid)
+       if err != nil {
+               return false
+       }
+       e, err := msgHash(za, msg)
+       if err != nil {
+               return false
+       }
+       t := new(big.Int).Add(r, s)
+       t.Mod(t, N)
+       if t.Sign() == 0 {
+               return false
+       }
+       var x *big.Int
+       x1, y1 := c.ScalarBaseMult(s.Bytes())
+       x2, y2 := c.ScalarMult(pub.X, pub.Y, t.Bytes())
+       x, _ = c.Add(x1, y1, x2, y2)
+
+       x.Add(x, e)
+       x.Mod(x, N)
+       return x.Cmp(r) == 0
+}
+
+func msgHash(za, msg []byte) (*big.Int, error) {
+       e := sm3.New()
+       e.Write(za)
+       e.Write(msg)
+       return new(big.Int).SetBytes(e.Sum(nil)[:32]), nil
+}
+
+// ZA = H256(ENTLA || IDA || a || b || xG || yG || xA || yA)
+func ZA(pub *PublicKey, uid []byte) ([]byte, error) {
+       za := sm3.New()
+       uidLen := len(uid)
+       if uidLen >= 8192 {
+               return []byte{}, errors.New("SM2: uid too large")
+       }
+       Entla := uint16(8 * uidLen)
+       za.Write([]byte{byte((Entla >> 8) & 0xFF)})
+       za.Write([]byte{byte(Entla & 0xFF)})
+       za.Write(uid)
+       za.Write(sm2P256ToBig(&sm2P256.a).Bytes())
+       za.Write(sm2P256.B.Bytes())
+       za.Write(sm2P256.Gx.Bytes())
+       za.Write(sm2P256.Gy.Bytes())
+
+       xBuf := pub.X.Bytes()
+       yBuf := pub.Y.Bytes()
+       if n := len(xBuf); n < 32 {
+               xBuf = append(zeroByteSlice[:32-n], xBuf...)
+       }
+       za.Write(xBuf)
+       za.Write(yBuf)
+       return za.Sum(nil)[:32], nil
+}
+
+// 32byte
+var zeroByteSlice = []byte{
+       0, 0, 0, 0,
+       0, 0, 0, 0,
+       0, 0, 0, 0,
+       0, 0, 0, 0,
+       0, 0, 0, 0,
+       0, 0, 0, 0,
+       0, 0, 0, 0,
+       0, 0, 0, 0,
+}
+
+/*
+ * sm2密文结构如下:
+ *  x
+ *  y
+ *  hash
+ *  CipherText
+ */
+func Encrypt(pub *PublicKey, data []byte) ([]byte, error) {
+       length := len(data)
+       for {
+               c := []byte{}
+               curve := pub.Curve
+               k, err := randFieldElement(curve, rand.Reader)
+               if err != nil {
+                       return nil, err
+               }
+               x1, y1 := curve.ScalarBaseMult(k.Bytes())
+               x2, y2 := curve.ScalarMult(pub.X, pub.Y, k.Bytes())
+               x1Buf := x1.Bytes()
+               y1Buf := y1.Bytes()
+               x2Buf := x2.Bytes()
+               y2Buf := y2.Bytes()
+               if n := len(x1Buf); n < 32 {
+                       x1Buf = append(zeroByteSlice[:32-n], x1Buf...)
+               }
+               if n := len(y1Buf); n < 32 {
+                       y1Buf = append(zeroByteSlice[:32-n], y1Buf...)
+               }
+               if n := len(x2Buf); n < 32 {
+                       x2Buf = append(zeroByteSlice[:32-n], x2Buf...)
+               }
+               if n := len(y2Buf); n < 32 {
+                       y2Buf = append(zeroByteSlice[:32-n], y2Buf...)
+               }
+               c = append(c, x1Buf...) // x分量
+               c = append(c, y1Buf...) // y分量
+               tm := []byte{}
+               tm = append(tm, x2Buf...)
+               tm = append(tm, data...)
+               tm = append(tm, y2Buf...)
+               h := sm3.Sm3Sum(tm)
+               c = append(c, h...)
+               ct, ok := kdf(x2Buf, y2Buf, length) // 密文
+               if !ok {
+                       continue
+               }
+               c = append(c, ct...)
+               for i := 0; i < length; i++ {
+                       c[96+i] ^= data[i]
+               }
+               return append([]byte{0x04}, c...), nil
+       }
+}
+
+func Decrypt(priv *PrivateKey, data []byte) ([]byte, error) {
+       data = data[1:]
+       length := len(data) - 96
+       curve := priv.Curve
+       x := new(big.Int).SetBytes(data[:32])
+       y := new(big.Int).SetBytes(data[32:64])
+       x2, y2 := curve.ScalarMult(x, y, priv.D.Bytes())
+       x2Buf := x2.Bytes()
+       y2Buf := y2.Bytes()
+       if n := len(x2Buf); n < 32 {
+               x2Buf = append(zeroByteSlice[:32-n], x2Buf...)
+       }
+       if n := len(y2Buf); n < 32 {
+               y2Buf = append(zeroByteSlice[:32-n], y2Buf...)
+       }
+       c, ok := kdf(x2Buf, y2Buf, length)
+       if !ok {
+               return nil, errors.New("Decrypt: failed to decrypt")
+       }
+       for i := 0; i < length; i++ {
+               c[i] ^= data[i+96]
+       }
+       tm := []byte{}
+       tm = append(tm, x2Buf...)
+       tm = append(tm, c...)
+       tm = append(tm, y2Buf...)
+       h := sm3.Sm3Sum(tm)
+       if bytes.Compare(h, data[64:96]) != 0 {
+               return c, errors.New("Decrypt: failed to decrypt")
+       }
+       return c, nil
+}
+
+type zr struct {
+       io.Reader
+}
+
+func (z *zr) Read(dst []byte) (n int, err error) {
+       for i := range dst {
+               dst[i] = 0
+       }
+       return len(dst), nil
+}
+
+var zeroReader = &zr{}
+
+func getLastBit(a *big.Int) uint {
+       return a.Bit(0)
+}
+
+func Compress(a *PublicKey) []byte {
+       buf := []byte{}
+       yp := getLastBit(a.Y)
+       buf = append(buf, a.X.Bytes()...)
+       if n := len(a.X.Bytes()); n < 32 {
+               buf = append(zeroByteSlice[:(32-n)], buf...)
+       }
+       buf = append([]byte{byte(yp)}, buf...)
+       return buf
+}
+
+func Decompress(a []byte) *PublicKey {
+       var aa, xx, xx3 sm2P256FieldElement
+
+       P256Sm2()
+       x := new(big.Int).SetBytes(a[1:])
+       curve := sm2P256
+       sm2P256FromBig(&xx, x)
+       sm2P256Square(&xx3, &xx)       // x3 = x ^ 2
+       sm2P256Mul(&xx3, &xx3, &xx)    // x3 = x ^ 2 * x
+       sm2P256Mul(&aa, &curve.a, &xx) // a = a * x
+       sm2P256Add(&xx3, &xx3, &aa)
+       sm2P256Add(&xx3, &xx3, &curve.b)
+
+       y2 := sm2P256ToBig(&xx3)
+       y := new(big.Int).ModSqrt(y2, sm2P256.P)
+       if getLastBit(y) != uint(a[0]) {
+               y.Sub(sm2P256.P, y)
+       }
+       return &PublicKey{
+               Curve: P256Sm2(),
+               X:     x,
+               Y:     y,
+       }
+}

diff --git a/vendor/github.com/bytom/crypto/sm2/sm2_test.go b/vendor/github.com/bytom/crypto/sm2/sm2_test.go
new file mode 100644 (file)
index 0000000..0820118
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/sm2/sm2_test.go
@@ -0,0 +1,219 @@
+/*
+Copyright Suzhou Tongji Fintech Research Institute 2017 All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+                 http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package sm2
+
+import (
+       "crypto/rand"
+       "crypto/x509/pkix"
+       "encoding/asn1"
+       "fmt"
+       "io/ioutil"
+       "log"
+       "math/big"
+       "net"
+       "os"
+       "testing"
+       "time"
+)
+
+func TestSm2(t *testing.T) {
+       priv, err := GenerateKey() // 生成密钥对
+       if err != nil {
+               log.Fatal(err)
+       }
+       fmt.Printf("%v\n", priv.Curve.IsOnCurve(priv.X, priv.Y)) // 验证是否为sm2的曲线
+       pub := &priv.PublicKey
+       msg := []byte("123456")
+       d0, err := pub.Encrypt(msg)
+       if err != nil {
+               fmt.Printf("Error: failed to encrypt %s: %v\n", msg, err)
+               return
+       }
+       fmt.Printf("Cipher text = %v\n", d0)
+       d1, err := priv.Decrypt(d0)
+       if err != nil {
+               fmt.Printf("Error: failed to decrypt: %v\n", err)
+       }
+       fmt.Printf("clear text = %s\n", d1)
+       ok, err := WritePrivateKeytoPem("priv.pem", priv, nil) // 生成密钥文件
+       if ok != true {
+               log.Fatal(err)
+       }
+       pubKey, _ := priv.Public().(*PublicKey)
+       ok, err = WritePublicKeytoPem("pub.pem", pubKey, nil) // 生成公钥文件
+       if ok != true {
+               log.Fatal(err)
+       }
+       msg = []byte("test")
+       err = ioutil.WriteFile("ifile", msg, os.FileMode(0644)) // 生成测试文件
+       if err != nil {
+               log.Fatal(err)
+       }
+       privKey, err := ReadPrivateKeyFromPem("priv.pem", nil) // 读取密钥
+       if err != nil {
+               log.Fatal(err)
+       }
+       pubKey, err = ReadPublicKeyFromPem("pub.pem", nil) // 读取公钥
+       if err != nil {
+               log.Fatal(err)
+       }
+       msg, _ = ioutil.ReadFile("ifile")                // 从文件读取数据
+       sign, err := privKey.Sign(rand.Reader, msg, nil) // 签名
+       if err != nil {
+               log.Fatal(err)
+       }
+       err = ioutil.WriteFile("ofile", sign, os.FileMode(0644))
+       if err != nil {
+               log.Fatal(err)
+       }
+       signdata, _ := ioutil.ReadFile("ofile")
+       ok = privKey.Verify(msg, signdata) // 密钥验证
+       if ok != true {
+               fmt.Printf("Verify error\n")
+       } else {
+               fmt.Printf("Verify ok\n")
+       }
+       ok = pubKey.Verify(msg, signdata) // 公钥验证
+       if ok != true {
+               fmt.Printf("Verify error\n")
+       } else {
+               fmt.Printf("Verify ok\n")
+       }
+       templateReq := CertificateRequest{
+               Subject: pkix.Name{
+                       CommonName:   "test.example.com",
+                       Organization: []string{"Test"},
+               },
+               //              SignatureAlgorithm: ECDSAWithSHA256,
+               SignatureAlgorithm: SM2WithSM3,
+       }
+       _, err = CreateCertificateRequestToPem("req.pem", &templateReq, privKey)
+       if err != nil {
+               log.Fatal(err)
+       }
+       req, err := ReadCertificateRequestFromPem("req.pem")
+       if err != nil {
+               log.Fatal(err)
+       }
+       err = req.CheckSignature()
+       if err != nil {
+               log.Fatal(err)
+       } else {
+               fmt.Printf("CheckSignature ok\n")
+       }
+       testExtKeyUsage := []ExtKeyUsage{ExtKeyUsageClientAuth, ExtKeyUsageServerAuth}
+       testUnknownExtKeyUsage := []asn1.ObjectIdentifier{[]int{1, 2, 3}, []int{2, 59, 1}}
+       extraExtensionData := []byte("extra extension")
+       commonName := "test.example.com"
+       template := Certificate{
+               // SerialNumber is negative to ensure that negative
+               // values are parsed. This is due to the prevalence of
+               // buggy code that produces certificates with negative
+               // serial numbers.
+               SerialNumber: big.NewInt(-1),
+               Subject: pkix.Name{
+                       CommonName:   commonName,
+                       Organization: []string{"TEST"},
+                       Country:      []string{"China"},
+                       ExtraNames: []pkix.AttributeTypeAndValue{
+                               {
+                                       Type:  []int{2, 5, 4, 42},
+                                       Value: "Gopher",
+                               },
+                               // This should override the Country, above.
+                               {
+                                       Type:  []int{2, 5, 4, 6},
+                                       Value: "NL",
+                               },
+                       },
+               },
+               NotBefore: time.Unix(1000, 0),
+               NotAfter:  time.Unix(100000, 0),
+
+               //              SignatureAlgorithm: ECDSAWithSHA256,
+               SignatureAlgorithm: SM2WithSM3,
+
+               SubjectKeyId: []byte{1, 2, 3, 4},
+               KeyUsage:     KeyUsageCertSign,
+
+               ExtKeyUsage:        testExtKeyUsage,
+               UnknownExtKeyUsage: testUnknownExtKeyUsage,
+
+               BasicConstraintsValid: true,
+               IsCA: true,
+
+               OCSPServer:            []string{"http://ocsp.example.com"},
+               IssuingCertificateURL: []string{"http://crt.example.com/ca1.crt"},
+
+               DNSNames:       []string{"test.example.com"},
+               EmailAddresses: []string{"gopher@golang.org"},
+               IPAddresses:    []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")},
+
+               PolicyIdentifiers:   []asn1.ObjectIdentifier{[]int{1, 2, 3}},
+               PermittedDNSDomains: []string{".example.com", "example.com"},
+
+               CRLDistributionPoints: []string{"http://crl1.example.com/ca1.crl", "http://crl2.example.com/ca1.crl"},
+
+               ExtraExtensions: []pkix.Extension{
+                       {
+                               Id:    []int{1, 2, 3, 4},
+                               Value: extraExtensionData,
+                       },
+                       // This extension should override the SubjectKeyId, above.
+                       {
+                               Id:       oidExtensionSubjectKeyId,
+                               Critical: false,
+                               Value:    []byte{0x04, 0x04, 4, 3, 2, 1},
+                       },
+               },
+       }
+       pubKey, _ = priv.Public().(*PublicKey)
+       ok, _ = CreateCertificateToPem("cert.pem", &template, &template, pubKey, privKey)
+       if ok != true {
+               fmt.Printf("failed to create cert file\n")
+       }
+       cert, err := ReadCertificateFromPem("cert.pem")
+       if err != nil {
+               fmt.Printf("failed to read cert file")
+       }
+       err = cert.CheckSignature(cert.SignatureAlgorithm, cert.RawTBSCertificate, cert.Signature)
+       if err != nil {
+               log.Fatal(err)
+       } else {
+               fmt.Printf("CheckSignature ok\n")
+       }
+}
+
+func BenchmarkSM2(t *testing.B) {
+       t.ReportAllocs()
+       for i := 0; i < t.N; i++ {
+               priv, err := GenerateKey() // 生成密钥对
+               if err != nil {
+                       log.Fatal(err)
+               }
+               msg := []byte("test")
+               sign, err := priv.Sign(rand.Reader, msg, nil) // 签名
+               if err != nil {
+                       log.Fatal(err)
+               }
+               ok := priv.Verify(msg, sign) // 密钥验证
+               if ok != true {
+                       fmt.Printf("Verify error\n")
+               } else {
+                       fmt.Printf("Verify ok\n")
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/crypto/sm2/verify.go b/vendor/github.com/bytom/crypto/sm2/verify.go
new file mode 100644 (file)
index 0000000..ec23e48
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/sm2/verify.go
@@ -0,0 +1,553 @@
+package sm2
+
+import (
+       "bytes"
+       "errors"
+       "fmt"
+       "net"
+       "runtime"
+       "strings"
+       "time"
+       "unicode/utf8"
+)
+
+type InvalidReason int
+
+const (
+       // NotAuthorizedToSign results when a certificate is signed by another
+       // which isn't marked as a CA certificate.
+       NotAuthorizedToSign InvalidReason = iota
+       // Expired results when a certificate has expired, based on the time
+       // given in the VerifyOptions.
+       Expired
+       // CANotAuthorizedForThisName results when an intermediate or root
+       // certificate has a name constraint which doesn't include the name
+       // being checked.
+       CANotAuthorizedForThisName
+       // TooManyIntermediates results when a path length constraint is
+       // violated.
+       TooManyIntermediates
+       // IncompatibleUsage results when the certificate's key usage indicates
+       // that it may only be used for a different purpose.
+       IncompatibleUsage
+       // NameMismatch results when the subject name of a parent certificate
+       // does not match the issuer name in the child.
+       NameMismatch
+)
+
+// CertificateInvalidError results when an odd error occurs. Users of this
+// library probably want to handle all these errors uniformly.
+type CertificateInvalidError struct {
+       Cert   *Certificate
+       Reason InvalidReason
+}
+
+func (e CertificateInvalidError) Error() string {
+       switch e.Reason {
+       case NotAuthorizedToSign:
+               return "x509: certificate is not authorized to sign other certificates"
+       case Expired:
+               return "x509: certificate has expired or is not yet valid"
+       case CANotAuthorizedForThisName:
+               return "x509: a root or intermediate certificate is not authorized to sign in this domain"
+       case TooManyIntermediates:
+               return "x509: too many intermediates for path length constraint"
+       case IncompatibleUsage:
+               return "x509: certificate specifies an incompatible key usage"
+       case NameMismatch:
+               return "x509: issuer name does not match subject from issuing certificate"
+       }
+       return "x509: unknown error"
+}
+
+// HostnameError results when the set of authorized names doesn't match the
+// requested name.
+type HostnameError struct {
+       Certificate *Certificate
+       Host        string
+}
+
+func (h HostnameError) Error() string {
+       c := h.Certificate
+
+       var valid string
+       if ip := net.ParseIP(h.Host); ip != nil {
+               // Trying to validate an IP
+               if len(c.IPAddresses) == 0 {
+                       return "x509: cannot validate certificate for " + h.Host + " because it doesn't contain any IP SANs"
+               }
+               for _, san := range c.IPAddresses {
+                       if len(valid) > 0 {
+                               valid += ", "
+                       }
+                       valid += san.String()
+               }
+       } else {
+               if len(c.DNSNames) > 0 {
+                       valid = strings.Join(c.DNSNames, ", ")
+               } else {
+                       valid = c.Subject.CommonName
+               }
+       }
+
+       if len(valid) == 0 {
+               return "x509: certificate is not valid for any names, but wanted to match " + h.Host
+       }
+       return "x509: certificate is valid for " + valid + ", not " + h.Host
+}
+
+// UnknownAuthorityError results when the certificate issuer is unknown
+type UnknownAuthorityError struct {
+       Cert *Certificate
+       // hintErr contains an error that may be helpful in determining why an
+       // authority wasn't found.
+       hintErr error
+       // hintCert contains a possible authority certificate that was rejected
+       // because of the error in hintErr.
+       hintCert *Certificate
+}
+
+func (e UnknownAuthorityError) Error() string {
+       s := "x509: certificate signed by unknown authority"
+       if e.hintErr != nil {
+               certName := e.hintCert.Subject.CommonName
+               if len(certName) == 0 {
+                       if len(e.hintCert.Subject.Organization) > 0 {
+                               certName = e.hintCert.Subject.Organization[0]
+                       } else {
+                               certName = "serial:" + e.hintCert.SerialNumber.String()
+                       }
+               }
+               s += fmt.Sprintf(" (possibly because of %q while trying to verify candidate authority certificate %q)", e.hintErr, certName)
+       }
+       return s
+}
+
+// SystemRootsError results when we fail to load the system root certificates.
+type SystemRootsError struct {
+       Err error
+}
+
+func (se SystemRootsError) Error() string {
+       msg := "x509: failed to load system roots and no roots provided"
+       if se.Err != nil {
+               return msg + "; " + se.Err.Error()
+       }
+       return msg
+}
+
+// errNotParsed is returned when a certificate without ASN.1 contents is
+// verified. Platform-specific verification needs the ASN.1 contents.
+var errNotParsed = errors.New("x509: missing ASN.1 contents; use ParseCertificate")
+
+// VerifyOptions contains parameters for Certificate.Verify. It's a structure
+// because other PKIX verification APIs have ended up needing many options.
+type VerifyOptions struct {
+       DNSName       string
+       Intermediates *CertPool
+       Roots         *CertPool // if nil, the system roots are used
+       CurrentTime   time.Time // if zero, the current time is used
+       // KeyUsage specifies which Extended Key Usage values are acceptable.
+       // An empty list means ExtKeyUsageServerAuth. Key usage is considered a
+       // constraint down the chain which mirrors Windows CryptoAPI behavior,
+       // but not the spec. To accept any key usage, include ExtKeyUsageAny.
+       KeyUsages []ExtKeyUsage
+}
+
+const (
+       leafCertificate = iota
+       intermediateCertificate
+       rootCertificate
+)
+
+func matchNameConstraint(domain, constraint string) bool {
+       // The meaning of zero length constraints is not specified, but this
+       // code follows NSS and accepts them as valid for everything.
+       if len(constraint) == 0 {
+               return true
+       }
+
+       if len(domain) < len(constraint) {
+               return false
+       }
+
+       prefixLen := len(domain) - len(constraint)
+       if !strings.EqualFold(domain[prefixLen:], constraint) {
+               return false
+       }
+
+       if prefixLen == 0 {
+               return true
+       }
+
+       isSubdomain := domain[prefixLen-1] == '.'
+       constraintHasLeadingDot := constraint[0] == '.'
+       return isSubdomain != constraintHasLeadingDot
+}
+
+// isValid performs validity checks on the c.
+func (c *Certificate) isValid(certType int, currentChain []*Certificate, opts *VerifyOptions) error {
+       if len(currentChain) > 0 {
+               child := currentChain[len(currentChain)-1]
+               if !bytes.Equal(child.RawIssuer, c.RawSubject) {
+                       return CertificateInvalidError{c, NameMismatch}
+               }
+       }
+       now := opts.CurrentTime
+       if now.IsZero() {
+               now = time.Now()
+       }
+       if now.Before(c.NotBefore) || now.After(c.NotAfter) {
+               return CertificateInvalidError{c, Expired}
+       }
+       if len(c.PermittedDNSDomains) > 0 {
+               ok := false
+               for _, constraint := range c.PermittedDNSDomains {
+                       ok = matchNameConstraint(opts.DNSName, constraint)
+                       if ok {
+                               break
+                       }
+               }
+
+               if !ok {
+                       return CertificateInvalidError{c, CANotAuthorizedForThisName}
+               }
+       }
+
+       // KeyUsage status flags are ignored. From Engineering Security, Peter
+       // Gutmann: A European government CA marked its signing certificates as
+       // being valid for encryption only, but no-one noticed. Another
+       // European CA marked its signature keys as not being valid for
+       // signatures. A different CA marked its own trusted root certificate
+       // as being invalid for certificate signing. Another national CA
+       // distributed a certificate to be used to encrypt data for the
+       // country’s tax authority that was marked as only being usable for
+       // digital signatures but not for encryption. Yet another CA reversed
+       // the order of the bit flags in the keyUsage due to confusion over
+       // encoding endianness, essentially setting a random keyUsage in
+       // certificates that it issued. Another CA created a self-invalidating
+       // certificate by adding a certificate policy statement stipulating
+       // that the certificate had to be used strictly as specified in the
+       // keyUsage, and a keyUsage containing a flag indicating that the RSA
+       // encryption key could only be used for Diffie-Hellman key agreement.
+
+       if certType == intermediateCertificate && (!c.BasicConstraintsValid || !c.IsCA) {
+               return CertificateInvalidError{c, NotAuthorizedToSign}
+       }
+
+       if c.BasicConstraintsValid && c.MaxPathLen >= 0 {
+               numIntermediates := len(currentChain) - 1
+               if numIntermediates > c.MaxPathLen {
+                       return CertificateInvalidError{c, TooManyIntermediates}
+               }
+       }
+
+       return nil
+}
+
+// Verify attempts to verify c by building one or more chains from c to a
+// certificate in opts.Roots, using certificates in opts.Intermediates if
+// needed. If successful, it returns one or more chains where the first
+// element of the chain is c and the last element is from opts.Roots.
+//
+// If opts.Roots is nil and system roots are unavailable the returned error
+// will be of type SystemRootsError.
+//
+// WARNING: this doesn't do any revocation checking.
+func (c *Certificate) Verify(opts VerifyOptions) (chains [][]*Certificate, err error) {
+       // Platform-specific verification needs the ASN.1 contents so
+       // this makes the behavior consistent across platforms.
+       if len(c.Raw) == 0 {
+               return nil, errNotParsed
+       }
+       if opts.Intermediates != nil {
+               for _, intermediate := range opts.Intermediates.certs {
+                       if len(intermediate.Raw) == 0 {
+                               return nil, errNotParsed
+                       }
+               }
+       }
+
+       // Use Windows's own verification and chain building.
+       if opts.Roots == nil && runtime.GOOS == "windows" {
+               return c.systemVerify(&opts)
+       }
+
+       if len(c.UnhandledCriticalExtensions) > 0 {
+               return nil, UnhandledCriticalExtension{}
+       }
+
+       if opts.Roots == nil {
+               opts.Roots = systemRootsPool()
+               if opts.Roots == nil {
+                       return nil, SystemRootsError{systemRootsErr}
+               }
+       }
+
+       err = c.isValid(leafCertificate, nil, &opts)
+       if err != nil {
+               return
+       }
+
+       if len(opts.DNSName) > 0 {
+               err = c.VerifyHostname(opts.DNSName)
+               if err != nil {
+                       return
+               }
+       }
+
+       var candidateChains [][]*Certificate
+       if opts.Roots.contains(c) {
+               candidateChains = append(candidateChains, []*Certificate{c})
+       } else {
+               if candidateChains, err = c.buildChains(make(map[int][][]*Certificate), []*Certificate{c}, &opts); err != nil {
+                       return nil, err
+               }
+       }
+
+       keyUsages := opts.KeyUsages
+       if len(keyUsages) == 0 {
+               keyUsages = []ExtKeyUsage{ExtKeyUsageServerAuth}
+       }
+
+       // If any key usage is acceptable then we're done.
+       for _, usage := range keyUsages {
+               if usage == ExtKeyUsageAny {
+                       chains = candidateChains
+                       return
+               }
+       }
+
+       for _, candidate := range candidateChains {
+               if checkChainForKeyUsage(candidate, keyUsages) {
+                       chains = append(chains, candidate)
+               }
+       }
+
+       if len(chains) == 0 {
+               err = CertificateInvalidError{c, IncompatibleUsage}
+       }
+
+       return
+}
+
+func appendToFreshChain(chain []*Certificate, cert *Certificate) []*Certificate {
+       n := make([]*Certificate, len(chain)+1)
+       copy(n, chain)
+       n[len(chain)] = cert
+       return n
+}
+
+func (c *Certificate) buildChains(cache map[int][][]*Certificate, currentChain []*Certificate, opts *VerifyOptions) (chains [][]*Certificate, err error) {
+       possibleRoots, failedRoot, rootErr := opts.Roots.findVerifiedParents(c)
+nextRoot:
+       for _, rootNum := range possibleRoots {
+               root := opts.Roots.certs[rootNum]
+
+               for _, cert := range currentChain {
+                       if cert.Equal(root) {
+                               continue nextRoot
+                       }
+               }
+
+               err = root.isValid(rootCertificate, currentChain, opts)
+               if err != nil {
+                       continue
+               }
+               chains = append(chains, appendToFreshChain(currentChain, root))
+       }
+
+       possibleIntermediates, failedIntermediate, intermediateErr := opts.Intermediates.findVerifiedParents(c)
+nextIntermediate:
+       for _, intermediateNum := range possibleIntermediates {
+               intermediate := opts.Intermediates.certs[intermediateNum]
+               for _, cert := range currentChain {
+                       if cert.Equal(intermediate) {
+                               continue nextIntermediate
+                       }
+               }
+               err = intermediate.isValid(intermediateCertificate, currentChain, opts)
+               if err != nil {
+                       continue
+               }
+               var childChains [][]*Certificate
+               childChains, ok := cache[intermediateNum]
+               if !ok {
+                       childChains, err = intermediate.buildChains(cache, appendToFreshChain(currentChain, intermediate), opts)
+                       cache[intermediateNum] = childChains
+               }
+               chains = append(chains, childChains...)
+       }
+
+       if len(chains) > 0 {
+               err = nil
+       }
+
+       if len(chains) == 0 && err == nil {
+               hintErr := rootErr
+               hintCert := failedRoot
+               if hintErr == nil {
+                       hintErr = intermediateErr
+                       hintCert = failedIntermediate
+               }
+               err = UnknownAuthorityError{c, hintErr, hintCert}
+       }
+
+       return
+}
+
+func matchHostnames(pattern, host string) bool {
+       host = strings.TrimSuffix(host, ".")
+       pattern = strings.TrimSuffix(pattern, ".")
+
+       if len(pattern) == 0 || len(host) == 0 {
+               return false
+       }
+
+       patternParts := strings.Split(pattern, ".")
+       hostParts := strings.Split(host, ".")
+
+       if len(patternParts) != len(hostParts) {
+               return false
+       }
+
+       for i, patternPart := range patternParts {
+               if i == 0 && patternPart == "*" {
+                       continue
+               }
+               if patternPart != hostParts[i] {
+                       return false
+               }
+       }
+
+       return true
+}
+
+// toLowerCaseASCII returns a lower-case version of in. See RFC 6125 6.4.1. We use
+// an explicitly ASCII function to avoid any sharp corners resulting from
+// performing Unicode operations on DNS labels.
+func toLowerCaseASCII(in string) string {
+       // If the string is already lower-case then there's nothing to do.
+       isAlreadyLowerCase := true
+       for _, c := range in {
+               if c == utf8.RuneError {
+                       // If we get a UTF-8 error then there might be
+                       // upper-case ASCII bytes in the invalid sequence.
+                       isAlreadyLowerCase = false
+                       break
+               }
+               if 'A' <= c && c <= 'Z' {
+                       isAlreadyLowerCase = false
+                       break
+               }
+       }
+
+       if isAlreadyLowerCase {
+               return in
+       }
+
+       out := []byte(in)
+       for i, c := range out {
+               if 'A' <= c && c <= 'Z' {
+                       out[i] += 'a' - 'A'
+               }
+       }
+       return string(out)
+}
+
+// VerifyHostname returns nil if c is a valid certificate for the named host.
+// Otherwise it returns an error describing the mismatch.
+func (c *Certificate) VerifyHostname(h string) error {
+       // IP addresses may be written in [ ].
+       candidateIP := h
+       if len(h) >= 3 && h[0] == '[' && h[len(h)-1] == ']' {
+               candidateIP = h[1 : len(h)-1]
+       }
+       if ip := net.ParseIP(candidateIP); ip != nil {
+               // We only match IP addresses against IP SANs.
+               // https://tools.ietf.org/html/rfc6125#appendix-B.2
+               for _, candidate := range c.IPAddresses {
+                       if ip.Equal(candidate) {
+                               return nil
+                       }
+               }
+               return HostnameError{c, candidateIP}
+       }
+
+       lowered := toLowerCaseASCII(h)
+
+       if len(c.DNSNames) > 0 {
+               for _, match := range c.DNSNames {
+                       if matchHostnames(toLowerCaseASCII(match), lowered) {
+                               return nil
+                       }
+               }
+               // If Subject Alt Name is given, we ignore the common name.
+       } else if matchHostnames(toLowerCaseASCII(c.Subject.CommonName), lowered) {
+               return nil
+       }
+
+       return HostnameError{c, h}
+}
+
+func checkChainForKeyUsage(chain []*Certificate, keyUsages []ExtKeyUsage) bool {
+       usages := make([]ExtKeyUsage, len(keyUsages))
+       copy(usages, keyUsages)
+
+       if len(chain) == 0 {
+               return false
+       }
+
+       usagesRemaining := len(usages)
+
+       // We walk down the list and cross out any usages that aren't supported
+       // by each certificate. If we cross out all the usages, then the chain
+       // is unacceptable.
+
+NextCert:
+       for i := len(chain) - 1; i >= 0; i-- {
+               cert := chain[i]
+               if len(cert.ExtKeyUsage) == 0 && len(cert.UnknownExtKeyUsage) == 0 {
+                       // The certificate doesn't have any extended key usage specified.
+                       continue
+               }
+
+               for _, usage := range cert.ExtKeyUsage {
+                       if usage == ExtKeyUsageAny {
+                               // The certificate is explicitly good for any usage.
+                               continue NextCert
+                       }
+               }
+
+               const invalidUsage ExtKeyUsage = -1
+
+       NextRequestedUsage:
+               for i, requestedUsage := range usages {
+                       if requestedUsage == invalidUsage {
+                               continue
+                       }
+
+                       for _, usage := range cert.ExtKeyUsage {
+                               if requestedUsage == usage {
+                                       continue NextRequestedUsage
+                               } else if requestedUsage == ExtKeyUsageServerAuth &&
+                                       (usage == ExtKeyUsageNetscapeServerGatedCrypto ||
+                                               usage == ExtKeyUsageMicrosoftServerGatedCrypto) {
+                                       // In order to support COMODO
+                                       // certificate chains, we have to
+                                       // accept Netscape or Microsoft SGC
+                                       // usages as equal to ServerAuth.
+                                       continue NextRequestedUsage
+                               }
+                       }
+
+                       usages[i] = invalidUsage
+                       usagesRemaining--
+                       if usagesRemaining == 0 {
+                               return false
+                       }
+               }
+       }
+
+       return true
+}

diff --git a/vendor/github.com/bytom/crypto/sm2/x509.go b/vendor/github.com/bytom/crypto/sm2/x509.go
new file mode 100644 (file)
index 0000000..d786ca2
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/sm2/x509.go
@@ -0,0 +1,2514 @@
+// crypto/x509 add sm2 support
+package sm2
+
+import (
+       "bytes"
+       "crypto"
+       "crypto/dsa"
+       "crypto/ecdsa"
+       "crypto/elliptic"
+       "crypto/md5"
+       "crypto/rand"
+       "crypto/rsa"
+       "crypto/sha1"
+       "crypto/sha256"
+       "crypto/sha512"
+       "crypto/x509/pkix"
+       "encoding/asn1"
+       "encoding/pem"
+       "errors"
+       "fmt"
+       "hash"
+       "io"
+       "io/ioutil"
+       "math/big"
+       "net"
+       "os"
+       "strconv"
+       "time"
+
+       "golang.org/x/crypto/ripemd160"
+       "golang.org/x/crypto/sha3"
+
+       "github.com/bytom/crypto/sm3"
+)
+
+// pkixPublicKey reflects a PKIX public key structure. See SubjectPublicKeyInfo
+// in RFC 3280.
+type pkixPublicKey struct {
+       Algo      pkix.AlgorithmIdentifier
+       BitString asn1.BitString
+}
+
+// ParsePKIXPublicKey parses a DER encoded public key. These values are
+// typically found in PEM blocks with "BEGIN PUBLIC KEY".
+//
+// Supported key types include RSA, DSA, and ECDSA. Unknown key
+// types result in an error.
+//
+// On success, pub will be of type *rsa.PublicKey, *dsa.PublicKey,
+// or *ecdsa.PublicKey.
+func ParsePKIXPublicKey(derBytes []byte) (pub interface{}, err error) {
+       var pki publicKeyInfo
+
+       if rest, err := asn1.Unmarshal(derBytes, &pki); err != nil {
+               return nil, err
+       } else if len(rest) != 0 {
+               return nil, errors.New("x509: trailing data after ASN.1 of public-key")
+       }
+       algo := getPublicKeyAlgorithmFromOID(pki.Algorithm.Algorithm)
+       if algo == UnknownPublicKeyAlgorithm {
+               return nil, errors.New("x509: unknown public key algorithm")
+       }
+       return parsePublicKey(algo, &pki)
+}
+
+func marshalPublicKey(pub interface{}) (publicKeyBytes []byte, publicKeyAlgorithm pkix.AlgorithmIdentifier, err error) {
+       switch pub := pub.(type) {
+       case *rsa.PublicKey:
+               publicKeyBytes, err = asn1.Marshal(rsaPublicKey{
+                       N: pub.N,
+                       E: pub.E,
+               })
+               if err != nil {
+                       return nil, pkix.AlgorithmIdentifier{}, err
+               }
+               publicKeyAlgorithm.Algorithm = oidPublicKeyRSA
+               // This is a NULL parameters value which is required by
+               // https://tools.ietf.org/html/rfc3279#section-2.3.1.
+               publicKeyAlgorithm.Parameters = asn1.RawValue{
+                       Tag: 5,
+               }
+       case *ecdsa.PublicKey:
+               publicKeyBytes = elliptic.Marshal(pub.Curve, pub.X, pub.Y)
+               oid, ok := oidFromNamedCurve(pub.Curve)
+               if !ok {
+                       return nil, pkix.AlgorithmIdentifier{}, errors.New("x509: unsupported elliptic curve")
+               }
+               publicKeyAlgorithm.Algorithm = oidPublicKeyECDSA
+               var paramBytes []byte
+               paramBytes, err = asn1.Marshal(oid)
+               if err != nil {
+                       return
+               }
+               publicKeyAlgorithm.Parameters.FullBytes = paramBytes
+       case *PublicKey:
+               publicKeyBytes = elliptic.Marshal(pub.Curve, pub.X, pub.Y)
+               oid, ok := oidFromNamedCurve(pub.Curve)
+               if !ok {
+                       return nil, pkix.AlgorithmIdentifier{}, errors.New("x509: unsupported SM2 curve")
+               }
+               publicKeyAlgorithm.Algorithm = oidPublicKeyECDSA
+               var paramBytes []byte
+               paramBytes, err = asn1.Marshal(oid)
+               if err != nil {
+                       return
+               }
+               publicKeyAlgorithm.Parameters.FullBytes = paramBytes
+       default:
+               return nil, pkix.AlgorithmIdentifier{}, errors.New("x509: only RSA and ECDSA(SM2) public keys supported")
+       }
+
+       return publicKeyBytes, publicKeyAlgorithm, nil
+}
+
+// MarshalPKIXPublicKey serialises a public key to DER-encoded PKIX format.
+func MarshalPKIXPublicKey(pub interface{}) ([]byte, error) {
+       var publicKeyBytes []byte
+       var publicKeyAlgorithm pkix.AlgorithmIdentifier
+       var err error
+
+       if publicKeyBytes, publicKeyAlgorithm, err = marshalPublicKey(pub); err != nil {
+               return nil, err
+       }
+
+       pkix := pkixPublicKey{
+               Algo: publicKeyAlgorithm,
+               BitString: asn1.BitString{
+                       Bytes:     publicKeyBytes,
+                       BitLength: 8 * len(publicKeyBytes),
+               },
+       }
+
+       ret, _ := asn1.Marshal(pkix)
+       return ret, nil
+}
+
+// These structures reflect the ASN.1 structure of X.509 certificates.:
+
+type certificate struct {
+       Raw                asn1.RawContent
+       TBSCertificate     tbsCertificate
+       SignatureAlgorithm pkix.AlgorithmIdentifier
+       SignatureValue     asn1.BitString
+}
+
+type tbsCertificate struct {
+       Raw                asn1.RawContent
+       Version            int `asn1:"optional,explicit,default:0,tag:0"`
+       SerialNumber       *big.Int
+       SignatureAlgorithm pkix.AlgorithmIdentifier
+       Issuer             asn1.RawValue
+       Validity           validity
+       Subject            asn1.RawValue
+       PublicKey          publicKeyInfo
+       UniqueId           asn1.BitString   `asn1:"optional,tag:1"`
+       SubjectUniqueId    asn1.BitString   `asn1:"optional,tag:2"`
+       Extensions         []pkix.Extension `asn1:"optional,explicit,tag:3"`
+}
+
+type dsaAlgorithmParameters struct {
+       P, Q, G *big.Int
+}
+
+type dsaSignature struct {
+       R, S *big.Int
+}
+
+type ecdsaSignature dsaSignature
+
+type validity struct {
+       NotBefore, NotAfter time.Time
+}
+
+type publicKeyInfo struct {
+       Raw       asn1.RawContent
+       Algorithm pkix.AlgorithmIdentifier
+       PublicKey asn1.BitString
+}
+
+// RFC 5280,  4.2.1.1
+type authKeyId struct {
+       Id []byte `asn1:"optional,tag:0"`
+}
+
+type SignatureAlgorithm int
+
+type Hash uint
+
+func init() {
+       RegisterHash(MD4, nil)
+       RegisterHash(MD5, md5.New)
+       RegisterHash(SHA1, sha1.New)
+       RegisterHash(SHA224, sha256.New224)
+       RegisterHash(SHA256, sha256.New)
+       RegisterHash(SHA384, sha512.New384)
+       RegisterHash(SHA512, sha512.New)
+       RegisterHash(MD5SHA1, nil)
+       RegisterHash(RIPEMD160, ripemd160.New)
+       RegisterHash(SHA3_224, sha3.New224)
+       RegisterHash(SHA3_256, sha3.New256)
+       RegisterHash(SHA3_384, sha3.New384)
+       RegisterHash(SHA3_512, sha3.New512)
+       RegisterHash(SHA512_224, sha512.New512_224)
+       RegisterHash(SHA512_256, sha512.New512_256)
+       RegisterHash(SM3, sm3.New)
+}
+
+// HashFunc simply returns the value of h so that Hash implements SignerOpts.
+func (h Hash) HashFunc() crypto.Hash {
+       return crypto.Hash(h)
+}
+
+const (
+       MD4        Hash = 1 + iota // import golang.org/x/crypto/md4
+       MD5                        // import crypto/md5
+       SHA1                       // import crypto/sha1
+       SHA224                     // import crypto/sha256
+       SHA256                     // import crypto/sha256
+       SHA384                     // import crypto/sha512
+       SHA512                     // import crypto/sha512
+       MD5SHA1                    // no implementation; MD5+SHA1 used for TLS RSA
+       RIPEMD160                  // import golang.org/x/crypto/ripemd160
+       SHA3_224                   // import golang.org/x/crypto/sha3
+       SHA3_256                   // import golang.org/x/crypto/sha3
+       SHA3_384                   // import golang.org/x/crypto/sha3
+       SHA3_512                   // import golang.org/x/crypto/sha3
+       SHA512_224                 // import crypto/sha512
+       SHA512_256                 // import crypto/sha512
+       SM3
+       maxHash
+)
+
+var digestSizes = []uint8{
+       MD4:        16,
+       MD5:        16,
+       SHA1:       20,
+       SHA224:     28,
+       SHA256:     32,
+       SHA384:     48,
+       SHA512:     64,
+       SHA512_224: 28,
+       SHA512_256: 32,
+       SHA3_224:   28,
+       SHA3_256:   32,
+       SHA3_384:   48,
+       SHA3_512:   64,
+       MD5SHA1:    36,
+       RIPEMD160:  20,
+       SM3:        32,
+}
+
+// Size returns the length, in bytes, of a digest resulting from the given hash
+// function. It doesn't require that the hash function in question be linked
+// into the program.
+func (h Hash) Size() int {
+       if h > 0 && h < maxHash {
+               return int(digestSizes[h])
+       }
+       panic("crypto: Size of unknown hash function")
+}
+
+var hashes = make([]func() hash.Hash, maxHash)
+
+// New returns a new hash.Hash calculating the given hash function. New panics
+// if the hash function is not linked into the binary.
+func (h Hash) New() hash.Hash {
+       if h > 0 && h < maxHash {
+               f := hashes[h]
+               if f != nil {
+                       return f()
+               }
+       }
+       panic("crypto: requested hash function #" + strconv.Itoa(int(h)) + " is unavailable")
+}
+
+// Available reports whether the given hash function is linked into the binary.
+func (h Hash) Available() bool {
+       return h < maxHash && hashes[h] != nil
+}
+
+// RegisterHash registers a function that returns a new instance of the given
+// hash function. This is intended to be called from the init function in
+// packages that implement hash functions.
+func RegisterHash(h Hash, f func() hash.Hash) {
+       if h >= maxHash {
+               panic("crypto: RegisterHash of unknown hash function")
+       }
+       hashes[h] = f
+}
+
+const (
+       UnknownSignatureAlgorithm SignatureAlgorithm = iota
+       MD2WithRSA
+       MD5WithRSA
+       //      SM3WithRSA reserve
+       SHA1WithRSA
+       SHA256WithRSA
+       SHA384WithRSA
+       SHA512WithRSA
+       DSAWithSHA1
+       DSAWithSHA256
+       ECDSAWithSHA1
+       ECDSAWithSHA256
+       ECDSAWithSHA384
+       ECDSAWithSHA512
+       SHA256WithRSAPSS
+       SHA384WithRSAPSS
+       SHA512WithRSAPSS
+       SM2WithSM3
+       SM2WithSHA1
+       SM2WithSHA256
+)
+
+func (algo SignatureAlgorithm) isRSAPSS() bool {
+       switch algo {
+       case SHA256WithRSAPSS, SHA384WithRSAPSS, SHA512WithRSAPSS:
+               return true
+       default:
+               return false
+       }
+}
+
+var algoName = [...]string{
+       MD2WithRSA:  "MD2-RSA",
+       MD5WithRSA:  "MD5-RSA",
+       SHA1WithRSA: "SHA1-RSA",
+       //      SM3WithRSA:       "SM3-RSA", reserve
+       SHA256WithRSA:    "SHA256-RSA",
+       SHA384WithRSA:    "SHA384-RSA",
+       SHA512WithRSA:    "SHA512-RSA",
+       SHA256WithRSAPSS: "SHA256-RSAPSS",
+       SHA384WithRSAPSS: "SHA384-RSAPSS",
+       SHA512WithRSAPSS: "SHA512-RSAPSS",
+       DSAWithSHA1:      "DSA-SHA1",
+       DSAWithSHA256:    "DSA-SHA256",
+       ECDSAWithSHA1:    "ECDSA-SHA1",
+       ECDSAWithSHA256:  "ECDSA-SHA256",
+       ECDSAWithSHA384:  "ECDSA-SHA384",
+       ECDSAWithSHA512:  "ECDSA-SHA512",
+       SM2WithSM3:       "SM2-SM3",
+       SM2WithSHA1:      "SM2-SHA1",
+       SM2WithSHA256:    "SM2-SHA256",
+}
+
+func (algo SignatureAlgorithm) String() string {
+       if 0 < algo && int(algo) < len(algoName) {
+               return algoName[algo]
+       }
+       return strconv.Itoa(int(algo))
+}
+
+type PublicKeyAlgorithm int
+
+const (
+       UnknownPublicKeyAlgorithm PublicKeyAlgorithm = iota
+       RSA
+       DSA
+       ECDSA
+)
+
+// OIDs for signature algorithms
+//
+// pkcs-1 OBJECT IDENTIFIER ::= {
+//    iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) 1 }
+//
+//
+// RFC 3279 2.2.1 RSA Signature Algorithms
+//
+// md2WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 2 }
+//
+// md5WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 4 }
+//
+// sha-1WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 5 }
+//
+// dsaWithSha1 OBJECT IDENTIFIER ::= {
+//    iso(1) member-body(2) us(840) x9-57(10040) x9cm(4) 3 }
+//
+// RFC 3279 2.2.3 ECDSA Signature Algorithm
+//
+// ecdsa-with-SHA1 OBJECT IDENTIFIER ::= {
+//       iso(1) member-body(2) us(840) ansi-x962(10045)
+//    signatures(4) ecdsa-with-SHA1(1)}
+//
+//
+// RFC 4055 5 PKCS #1 Version 1.5
+//
+// sha256WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 11 }
+//
+// sha384WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 12 }
+//
+// sha512WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 13 }
+//
+//
+// RFC 5758 3.1 DSA Signature Algorithms
+//
+// dsaWithSha256 OBJECT IDENTIFIER ::= {
+//    joint-iso-ccitt(2) country(16) us(840) organization(1) gov(101)
+//    csor(3) algorithms(4) id-dsa-with-sha2(3) 2}
+//
+// RFC 5758 3.2 ECDSA Signature Algorithm
+//
+// ecdsa-with-SHA256 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
+//    us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 2 }
+//
+// ecdsa-with-SHA384 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
+//    us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 3 }
+//
+// ecdsa-with-SHA512 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
+//    us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 4 }
+
+var (
+       oidSignatureMD2WithRSA      = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 2}
+       oidSignatureMD5WithRSA      = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 4}
+       oidSignatureSHA1WithRSA     = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 5}
+       oidSignatureSHA256WithRSA   = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 11}
+       oidSignatureSHA384WithRSA   = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 12}
+       oidSignatureSHA512WithRSA   = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 13}
+       oidSignatureRSAPSS          = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 10}
+       oidSignatureDSAWithSHA1     = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 3}
+       oidSignatureDSAWithSHA256   = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 3, 2}
+       oidSignatureECDSAWithSHA1   = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 1}
+       oidSignatureECDSAWithSHA256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 2}
+       oidSignatureECDSAWithSHA384 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 3}
+       oidSignatureECDSAWithSHA512 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 4}
+       oidSignatureSM2WithSM3      = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 501}
+       oidSignatureSM2WithSHA1     = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 502}
+       oidSignatureSM2WithSHA256   = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 503}
+       //      oidSignatureSM3WithRSA      = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 504}
+
+       oidSM3    = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 401, 1}
+       oidSHA256 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 1}
+       oidSHA384 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 2}
+       oidSHA512 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 3}
+
+       oidMGF1 = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 8}
+
+       // oidISOSignatureSHA1WithRSA means the same as oidSignatureSHA1WithRSA
+       // but it's specified by ISO. Microsoft's makecert.exe has been known
+       // to produce certificates with this OID.
+       oidISOSignatureSHA1WithRSA = asn1.ObjectIdentifier{1, 3, 14, 3, 2, 29}
+)
+
+var signatureAlgorithmDetails = []struct {
+       algo       SignatureAlgorithm
+       oid        asn1.ObjectIdentifier
+       pubKeyAlgo PublicKeyAlgorithm
+       hash       Hash
+}{
+       {MD2WithRSA, oidSignatureMD2WithRSA, RSA, Hash(0) /* no value for MD2 */},
+       {MD5WithRSA, oidSignatureMD5WithRSA, RSA, MD5},
+       {SHA1WithRSA, oidSignatureSHA1WithRSA, RSA, SHA1},
+       {SHA1WithRSA, oidISOSignatureSHA1WithRSA, RSA, SHA1},
+       {SHA256WithRSA, oidSignatureSHA256WithRSA, RSA, SHA256},
+       {SHA384WithRSA, oidSignatureSHA384WithRSA, RSA, SHA384},
+       {SHA512WithRSA, oidSignatureSHA512WithRSA, RSA, SHA512},
+       {SHA256WithRSAPSS, oidSignatureRSAPSS, RSA, SHA256},
+       {SHA384WithRSAPSS, oidSignatureRSAPSS, RSA, SHA384},
+       {SHA512WithRSAPSS, oidSignatureRSAPSS, RSA, SHA512},
+       {DSAWithSHA1, oidSignatureDSAWithSHA1, DSA, SHA1},
+       {DSAWithSHA256, oidSignatureDSAWithSHA256, DSA, SHA256},
+       {ECDSAWithSHA1, oidSignatureECDSAWithSHA1, ECDSA, SHA1},
+       {ECDSAWithSHA256, oidSignatureECDSAWithSHA256, ECDSA, SHA256},
+       {ECDSAWithSHA384, oidSignatureECDSAWithSHA384, ECDSA, SHA384},
+       {ECDSAWithSHA512, oidSignatureECDSAWithSHA512, ECDSA, SHA512},
+       {SM2WithSM3, oidSignatureSM2WithSM3, ECDSA, SM3},
+       {SM2WithSHA1, oidSignatureSM2WithSHA1, ECDSA, SHA1},
+       {SM2WithSHA256, oidSignatureSM2WithSHA256, ECDSA, SHA256},
+       //      {SM3WithRSA, oidSignatureSM3WithRSA, RSA, SM3},
+}
+
+// pssParameters reflects the parameters in an AlgorithmIdentifier that
+// specifies RSA PSS. See https://tools.ietf.org/html/rfc3447#appendix-A.2.3
+type pssParameters struct {
+       // The following three fields are not marked as
+       // optional because the default values specify SHA-1,
+       // which is no longer suitable for use in signatures.
+       Hash         pkix.AlgorithmIdentifier `asn1:"explicit,tag:0"`
+       MGF          pkix.AlgorithmIdentifier `asn1:"explicit,tag:1"`
+       SaltLength   int                      `asn1:"explicit,tag:2"`
+       TrailerField int                      `asn1:"optional,explicit,tag:3,default:1"`
+}
+
+// rsaPSSParameters returns an asn1.RawValue suitable for use as the Parameters
+// in an AlgorithmIdentifier that specifies RSA PSS.
+func rsaPSSParameters(hashFunc Hash) asn1.RawValue {
+       var hashOID asn1.ObjectIdentifier
+
+       switch hashFunc {
+       case SHA256:
+               hashOID = oidSHA256
+       case SHA384:
+               hashOID = oidSHA384
+       case SHA512:
+               hashOID = oidSHA512
+       }
+
+       params := pssParameters{
+               Hash: pkix.AlgorithmIdentifier{
+                       Algorithm: hashOID,
+                       Parameters: asn1.RawValue{
+                               Tag: 5, /* ASN.1 NULL */
+                       },
+               },
+               MGF: pkix.AlgorithmIdentifier{
+                       Algorithm: oidMGF1,
+               },
+               SaltLength:   hashFunc.Size(),
+               TrailerField: 1,
+       }
+
+       mgf1Params := pkix.AlgorithmIdentifier{
+               Algorithm: hashOID,
+               Parameters: asn1.RawValue{
+                       Tag: 5, /* ASN.1 NULL */
+               },
+       }
+
+       var err error
+       params.MGF.Parameters.FullBytes, err = asn1.Marshal(mgf1Params)
+       if err != nil {
+               panic(err)
+       }
+
+       serialized, err := asn1.Marshal(params)
+       if err != nil {
+               panic(err)
+       }
+
+       return asn1.RawValue{FullBytes: serialized}
+}
+
+func getSignatureAlgorithmFromAI(ai pkix.AlgorithmIdentifier) SignatureAlgorithm {
+       if !ai.Algorithm.Equal(oidSignatureRSAPSS) {
+               for _, details := range signatureAlgorithmDetails {
+                       if ai.Algorithm.Equal(details.oid) {
+                               return details.algo
+                       }
+               }
+               return UnknownSignatureAlgorithm
+       }
+
+       // RSA PSS is special because it encodes important parameters
+       // in the Parameters.
+
+       var params pssParameters
+       if _, err := asn1.Unmarshal(ai.Parameters.FullBytes, &params); err != nil {
+               return UnknownSignatureAlgorithm
+       }
+
+       var mgf1HashFunc pkix.AlgorithmIdentifier
+       if _, err := asn1.Unmarshal(params.MGF.Parameters.FullBytes, &mgf1HashFunc); err != nil {
+               return UnknownSignatureAlgorithm
+       }
+
+       // PSS is greatly overburdened with options. This code forces
+       // them into three buckets by requiring that the MGF1 hash
+       // function always match the message hash function (as
+       // recommended in
+       // https://tools.ietf.org/html/rfc3447#section-8.1), that the
+       // salt length matches the hash length, and that the trailer
+       // field has the default value.
+       asn1NULL := []byte{0x05, 0x00}
+       if !bytes.Equal(params.Hash.Parameters.FullBytes, asn1NULL) ||
+               !params.MGF.Algorithm.Equal(oidMGF1) ||
+               !mgf1HashFunc.Algorithm.Equal(params.Hash.Algorithm) ||
+               !bytes.Equal(mgf1HashFunc.Parameters.FullBytes, asn1NULL) ||
+               params.TrailerField != 1 {
+               return UnknownSignatureAlgorithm
+       }
+
+       switch {
+       case params.Hash.Algorithm.Equal(oidSHA256) && params.SaltLength == 32:
+               return SHA256WithRSAPSS
+       case params.Hash.Algorithm.Equal(oidSHA384) && params.SaltLength == 48:
+               return SHA384WithRSAPSS
+       case params.Hash.Algorithm.Equal(oidSHA512) && params.SaltLength == 64:
+               return SHA512WithRSAPSS
+       }
+
+       return UnknownSignatureAlgorithm
+}
+
+// RFC 3279, 2.3 Public Key Algorithms
+//
+// pkcs-1 OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840)
+//    rsadsi(113549) pkcs(1) 1 }
+//
+// rsaEncryption OBJECT IDENTIFIER ::== { pkcs1-1 1 }
+//
+// id-dsa OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840)
+//    x9-57(10040) x9cm(4) 1 }
+//
+// RFC 5480, 2.1.1 Unrestricted Algorithm Identifier and Parameters
+//
+// id-ecPublicKey OBJECT IDENTIFIER ::= {
+//       iso(1) member-body(2) us(840) ansi-X9-62(10045) keyType(2) 1 }
+var (
+       oidPublicKeyRSA   = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 1}
+       oidPublicKeyDSA   = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 1}
+       oidPublicKeyECDSA = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1}
+)
+
+func getPublicKeyAlgorithmFromOID(oid asn1.ObjectIdentifier) PublicKeyAlgorithm {
+       switch {
+       case oid.Equal(oidPublicKeyRSA):
+               return RSA
+       case oid.Equal(oidPublicKeyDSA):
+               return DSA
+       case oid.Equal(oidPublicKeyECDSA):
+               return ECDSA
+       }
+       return UnknownPublicKeyAlgorithm
+}
+
+// RFC 5480, 2.1.1.1. Named Curve
+//
+// secp224r1 OBJECT IDENTIFIER ::= {
+//   iso(1) identified-organization(3) certicom(132) curve(0) 33 }
+//
+// secp256r1 OBJECT IDENTIFIER ::= {
+//   iso(1) member-body(2) us(840) ansi-X9-62(10045) curves(3)
+//   prime(1) 7 }
+//
+// secp384r1 OBJECT IDENTIFIER ::= {
+//   iso(1) identified-organization(3) certicom(132) curve(0) 34 }
+//
+// secp521r1 OBJECT IDENTIFIER ::= {
+//   iso(1) identified-organization(3) certicom(132) curve(0) 35 }
+//
+// NB: secp256r1 is equivalent to prime256v1
+var (
+       oidNamedCurveP224    = asn1.ObjectIdentifier{1, 3, 132, 0, 33}
+       oidNamedCurveP256    = asn1.ObjectIdentifier{1, 2, 840, 10045, 3, 1, 7}
+       oidNamedCurveP384    = asn1.ObjectIdentifier{1, 3, 132, 0, 34}
+       oidNamedCurveP521    = asn1.ObjectIdentifier{1, 3, 132, 0, 35}
+       oidNamedCurveP256SM2 = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 301} // I get the SM2 ID through parsing the pem file generated by gmssl
+)
+
+func namedCurveFromOID(oid asn1.ObjectIdentifier) elliptic.Curve {
+       switch {
+       case oid.Equal(oidNamedCurveP224):
+               return elliptic.P224()
+       case oid.Equal(oidNamedCurveP256):
+               return elliptic.P256()
+       case oid.Equal(oidNamedCurveP384):
+               return elliptic.P384()
+       case oid.Equal(oidNamedCurveP521):
+               return elliptic.P521()
+       case oid.Equal(oidNamedCurveP256SM2):
+               return P256Sm2()
+       }
+       return nil
+}
+
+func oidFromNamedCurve(curve elliptic.Curve) (asn1.ObjectIdentifier, bool) {
+       switch curve {
+       case elliptic.P224():
+               return oidNamedCurveP224, true
+       case elliptic.P256():
+               return oidNamedCurveP256, true
+       case elliptic.P384():
+               return oidNamedCurveP384, true
+       case elliptic.P521():
+               return oidNamedCurveP521, true
+       case P256Sm2():
+               return oidNamedCurveP256SM2, true
+       }
+       return nil, false
+}
+
+// KeyUsage represents the set of actions that are valid for a given key. It's
+// a bitmap of the KeyUsage* constants.
+type KeyUsage int
+
+const (
+       KeyUsageDigitalSignature KeyUsage = 1 << iota
+       KeyUsageContentCommitment
+       KeyUsageKeyEncipherment
+       KeyUsageDataEncipherment
+       KeyUsageKeyAgreement
+       KeyUsageCertSign
+       KeyUsageCRLSign
+       KeyUsageEncipherOnly
+       KeyUsageDecipherOnly
+)
+
+// RFC 5280, 4.2.1.12  Extended Key Usage
+//
+// anyExtendedKeyUsage OBJECT IDENTIFIER ::= { id-ce-extKeyUsage 0 }
+//
+// id-kp OBJECT IDENTIFIER ::= { id-pkix 3 }
+//
+// id-kp-serverAuth             OBJECT IDENTIFIER ::= { id-kp 1 }
+// id-kp-clientAuth             OBJECT IDENTIFIER ::= { id-kp 2 }
+// id-kp-codeSigning            OBJECT IDENTIFIER ::= { id-kp 3 }
+// id-kp-emailProtection        OBJECT IDENTIFIER ::= { id-kp 4 }
+// id-kp-timeStamping           OBJECT IDENTIFIER ::= { id-kp 8 }
+// id-kp-OCSPSigning            OBJECT IDENTIFIER ::= { id-kp 9 }
+var (
+       oidExtKeyUsageAny                        = asn1.ObjectIdentifier{2, 5, 29, 37, 0}
+       oidExtKeyUsageServerAuth                 = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 1}
+       oidExtKeyUsageClientAuth                 = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 2}
+       oidExtKeyUsageCodeSigning                = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 3}
+       oidExtKeyUsageEmailProtection            = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 4}
+       oidExtKeyUsageIPSECEndSystem             = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 5}
+       oidExtKeyUsageIPSECTunnel                = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 6}
+       oidExtKeyUsageIPSECUser                  = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 7}
+       oidExtKeyUsageTimeStamping               = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 8}
+       oidExtKeyUsageOCSPSigning                = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 9}
+       oidExtKeyUsageMicrosoftServerGatedCrypto = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 311, 10, 3, 3}
+       oidExtKeyUsageNetscapeServerGatedCrypto  = asn1.ObjectIdentifier{2, 16, 840, 1, 113730, 4, 1}
+)
+
+// ExtKeyUsage represents an extended set of actions that are valid for a given key.
+// Each of the ExtKeyUsage* constants define a unique action.
+type ExtKeyUsage int
+
+const (
+       ExtKeyUsageAny ExtKeyUsage = iota
+       ExtKeyUsageServerAuth
+       ExtKeyUsageClientAuth
+       ExtKeyUsageCodeSigning
+       ExtKeyUsageEmailProtection
+       ExtKeyUsageIPSECEndSystem
+       ExtKeyUsageIPSECTunnel
+       ExtKeyUsageIPSECUser
+       ExtKeyUsageTimeStamping
+       ExtKeyUsageOCSPSigning
+       ExtKeyUsageMicrosoftServerGatedCrypto
+       ExtKeyUsageNetscapeServerGatedCrypto
+)
+
+// extKeyUsageOIDs contains the mapping between an ExtKeyUsage and its OID.
+var extKeyUsageOIDs = []struct {
+       extKeyUsage ExtKeyUsage
+       oid         asn1.ObjectIdentifier
+}{
+       {ExtKeyUsageAny, oidExtKeyUsageAny},
+       {ExtKeyUsageServerAuth, oidExtKeyUsageServerAuth},
+       {ExtKeyUsageClientAuth, oidExtKeyUsageClientAuth},
+       {ExtKeyUsageCodeSigning, oidExtKeyUsageCodeSigning},
+       {ExtKeyUsageEmailProtection, oidExtKeyUsageEmailProtection},
+       {ExtKeyUsageIPSECEndSystem, oidExtKeyUsageIPSECEndSystem},
+       {ExtKeyUsageIPSECTunnel, oidExtKeyUsageIPSECTunnel},
+       {ExtKeyUsageIPSECUser, oidExtKeyUsageIPSECUser},
+       {ExtKeyUsageTimeStamping, oidExtKeyUsageTimeStamping},
+       {ExtKeyUsageOCSPSigning, oidExtKeyUsageOCSPSigning},
+       {ExtKeyUsageMicrosoftServerGatedCrypto, oidExtKeyUsageMicrosoftServerGatedCrypto},
+       {ExtKeyUsageNetscapeServerGatedCrypto, oidExtKeyUsageNetscapeServerGatedCrypto},
+}
+
+func extKeyUsageFromOID(oid asn1.ObjectIdentifier) (eku ExtKeyUsage, ok bool) {
+       for _, pair := range extKeyUsageOIDs {
+               if oid.Equal(pair.oid) {
+                       return pair.extKeyUsage, true
+               }
+       }
+       return
+}
+
+func oidFromExtKeyUsage(eku ExtKeyUsage) (oid asn1.ObjectIdentifier, ok bool) {
+       for _, pair := range extKeyUsageOIDs {
+               if eku == pair.extKeyUsage {
+                       return pair.oid, true
+               }
+       }
+       return
+}
+
+// A Certificate represents an X.509 certificate.
+type Certificate struct {
+       Raw                     []byte // Complete ASN.1 DER content (certificate, signature algorithm and signature).
+       RawTBSCertificate       []byte // Certificate part of raw ASN.1 DER content.
+       RawSubjectPublicKeyInfo []byte // DER encoded SubjectPublicKeyInfo.
+       RawSubject              []byte // DER encoded Subject
+       RawIssuer               []byte // DER encoded Issuer
+
+       Signature          []byte
+       SignatureAlgorithm SignatureAlgorithm
+
+       PublicKeyAlgorithm PublicKeyAlgorithm
+       PublicKey          interface{}
+
+       Version             int
+       SerialNumber        *big.Int
+       Issuer              pkix.Name
+       Subject             pkix.Name
+       NotBefore, NotAfter time.Time // Validity bounds.
+       KeyUsage            KeyUsage
+
+       // Extensions contains raw X.509 extensions. When parsing certificates,
+       // this can be used to extract non-critical extensions that are not
+       // parsed by this package. When marshaling certificates, the Extensions
+       // field is ignored, see ExtraExtensions.
+       Extensions []pkix.Extension
+
+       // ExtraExtensions contains extensions to be copied, raw, into any
+       // marshaled certificates. Values override any extensions that would
+       // otherwise be produced based on the other fields. The ExtraExtensions
+       // field is not populated when parsing certificates, see Extensions.
+       ExtraExtensions []pkix.Extension
+
+       // UnhandledCriticalExtensions contains a list of extension IDs that
+       // were not (fully) processed when parsing. Verify will fail if this
+       // slice is non-empty, unless verification is delegated to an OS
+       // library which understands all the critical extensions.
+       //
+       // Users can access these extensions using Extensions and can remove
+       // elements from this slice if they believe that they have been
+       // handled.
+       UnhandledCriticalExtensions []asn1.ObjectIdentifier
+
+       ExtKeyUsage        []ExtKeyUsage           // Sequence of extended key usages.
+       UnknownExtKeyUsage []asn1.ObjectIdentifier // Encountered extended key usages unknown to this package.
+
+       BasicConstraintsValid bool // if true then the next two fields are valid.
+       IsCA                  bool
+       MaxPathLen            int
+       // MaxPathLenZero indicates that BasicConstraintsValid==true and
+       // MaxPathLen==0 should be interpreted as an actual maximum path length
+       // of zero. Otherwise, that combination is interpreted as MaxPathLen
+       // not being set.
+       MaxPathLenZero bool
+
+       SubjectKeyId   []byte
+       AuthorityKeyId []byte
+
+       // RFC 5280, 4.2.2.1 (Authority Information Access)
+       OCSPServer            []string
+       IssuingCertificateURL []string
+
+       // Subject Alternate Name values
+       DNSNames       []string
+       EmailAddresses []string
+       IPAddresses    []net.IP
+
+       // Name constraints
+       PermittedDNSDomainsCritical bool // if true then the name constraints are marked critical.
+       PermittedDNSDomains         []string
+
+       // CRL Distribution Points
+       CRLDistributionPoints []string
+
+       PolicyIdentifiers []asn1.ObjectIdentifier
+}
+
+// ErrUnsupportedAlgorithm results from attempting to perform an operation that
+// involves algorithms that are not currently implemented.
+var ErrUnsupportedAlgorithm = errors.New("x509: cannot verify signature: algorithm unimplemented")
+
+// An InsecureAlgorithmError
+type InsecureAlgorithmError SignatureAlgorithm
+
+func (e InsecureAlgorithmError) Error() string {
+       return fmt.Sprintf("x509: cannot verify signature: insecure algorithm %v", SignatureAlgorithm(e))
+}
+
+// ConstraintViolationError results when a requested usage is not permitted by
+// a certificate. For example: checking a signature when the public key isn't a
+// certificate signing key.
+type ConstraintViolationError struct{}
+
+func (ConstraintViolationError) Error() string {
+       return "x509: invalid signature: parent certificate cannot sign this kind of certificate"
+}
+
+func (c *Certificate) Equal(other *Certificate) bool {
+       return bytes.Equal(c.Raw, other.Raw)
+}
+
+// Entrust have a broken root certificate (CN=Entrust.net Certification
+// Authority (2048)) which isn't marked as a CA certificate and is thus invalid
+// according to PKIX.
+// We recognise this certificate by its SubjectPublicKeyInfo and exempt it
+// from the Basic Constraints requirement.
+// See http://www.entrust.net/knowledge-base/technote.cfm?tn=7869
+//
+// TODO(agl): remove this hack once their reissued root is sufficiently
+// widespread.
+var entrustBrokenSPKI = []byte{
+       0x30, 0x82, 0x01, 0x22, 0x30, 0x0d, 0x06, 0x09,
+       0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01,
+       0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00,
+       0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01,
+       0x00, 0x97, 0xa3, 0x2d, 0x3c, 0x9e, 0xde, 0x05,
+       0xda, 0x13, 0xc2, 0x11, 0x8d, 0x9d, 0x8e, 0xe3,
+       0x7f, 0xc7, 0x4b, 0x7e, 0x5a, 0x9f, 0xb3, 0xff,
+       0x62, 0xab, 0x73, 0xc8, 0x28, 0x6b, 0xba, 0x10,
+       0x64, 0x82, 0x87, 0x13, 0xcd, 0x57, 0x18, 0xff,
+       0x28, 0xce, 0xc0, 0xe6, 0x0e, 0x06, 0x91, 0x50,
+       0x29, 0x83, 0xd1, 0xf2, 0xc3, 0x2a, 0xdb, 0xd8,
+       0xdb, 0x4e, 0x04, 0xcc, 0x00, 0xeb, 0x8b, 0xb6,
+       0x96, 0xdc, 0xbc, 0xaa, 0xfa, 0x52, 0x77, 0x04,
+       0xc1, 0xdb, 0x19, 0xe4, 0xae, 0x9c, 0xfd, 0x3c,
+       0x8b, 0x03, 0xef, 0x4d, 0xbc, 0x1a, 0x03, 0x65,
+       0xf9, 0xc1, 0xb1, 0x3f, 0x72, 0x86, 0xf2, 0x38,
+       0xaa, 0x19, 0xae, 0x10, 0x88, 0x78, 0x28, 0xda,
+       0x75, 0xc3, 0x3d, 0x02, 0x82, 0x02, 0x9c, 0xb9,
+       0xc1, 0x65, 0x77, 0x76, 0x24, 0x4c, 0x98, 0xf7,
+       0x6d, 0x31, 0x38, 0xfb, 0xdb, 0xfe, 0xdb, 0x37,
+       0x02, 0x76, 0xa1, 0x18, 0x97, 0xa6, 0xcc, 0xde,
+       0x20, 0x09, 0x49, 0x36, 0x24, 0x69, 0x42, 0xf6,
+       0xe4, 0x37, 0x62, 0xf1, 0x59, 0x6d, 0xa9, 0x3c,
+       0xed, 0x34, 0x9c, 0xa3, 0x8e, 0xdb, 0xdc, 0x3a,
+       0xd7, 0xf7, 0x0a, 0x6f, 0xef, 0x2e, 0xd8, 0xd5,
+       0x93, 0x5a, 0x7a, 0xed, 0x08, 0x49, 0x68, 0xe2,
+       0x41, 0xe3, 0x5a, 0x90, 0xc1, 0x86, 0x55, 0xfc,
+       0x51, 0x43, 0x9d, 0xe0, 0xb2, 0xc4, 0x67, 0xb4,
+       0xcb, 0x32, 0x31, 0x25, 0xf0, 0x54, 0x9f, 0x4b,
+       0xd1, 0x6f, 0xdb, 0xd4, 0xdd, 0xfc, 0xaf, 0x5e,
+       0x6c, 0x78, 0x90, 0x95, 0xde, 0xca, 0x3a, 0x48,
+       0xb9, 0x79, 0x3c, 0x9b, 0x19, 0xd6, 0x75, 0x05,
+       0xa0, 0xf9, 0x88, 0xd7, 0xc1, 0xe8, 0xa5, 0x09,
+       0xe4, 0x1a, 0x15, 0xdc, 0x87, 0x23, 0xaa, 0xb2,
+       0x75, 0x8c, 0x63, 0x25, 0x87, 0xd8, 0xf8, 0x3d,
+       0xa6, 0xc2, 0xcc, 0x66, 0xff, 0xa5, 0x66, 0x68,
+       0x55, 0x02, 0x03, 0x01, 0x00, 0x01,
+}
+
+// CheckSignatureFrom verifies that the signature on c is a valid signature
+// from parent.
+func (c *Certificate) CheckSignatureFrom(parent *Certificate) error {
+       // RFC 5280, 4.2.1.9:
+       // "If the basic constraints extension is not present in a version 3
+       // certificate, or the extension is present but the cA boolean is not
+       // asserted, then the certified public key MUST NOT be used to verify
+       // certificate signatures."
+       // (except for Entrust, see comment above entrustBrokenSPKI)
+       if (parent.Version == 3 && !parent.BasicConstraintsValid ||
+               parent.BasicConstraintsValid && !parent.IsCA) &&
+               !bytes.Equal(c.RawSubjectPublicKeyInfo, entrustBrokenSPKI) {
+               return ConstraintViolationError{}
+       }
+
+       if parent.KeyUsage != 0 && parent.KeyUsage&KeyUsageCertSign == 0 {
+               return ConstraintViolationError{}
+       }
+
+       if parent.PublicKeyAlgorithm == UnknownPublicKeyAlgorithm {
+               return ErrUnsupportedAlgorithm
+       }
+
+       // TODO(agl): don't ignore the path length constraint.
+
+       return parent.CheckSignature(c.SignatureAlgorithm, c.RawTBSCertificate, c.Signature)
+}
+
+// CheckSignature verifies that signature is a valid signature over signed from
+// c's public key.
+func (c *Certificate) CheckSignature(algo SignatureAlgorithm, signed, signature []byte) error {
+       return checkSignature(algo, signed, signature, c.PublicKey)
+}
+
+// CheckSignature verifies that signature is a valid signature over signed from
+// a crypto.PublicKey.
+func checkSignature(algo SignatureAlgorithm, signed, signature []byte, publicKey crypto.PublicKey) (err error) {
+       var hashType Hash
+
+       switch algo {
+       case SHA1WithRSA, DSAWithSHA1, ECDSAWithSHA1, SM2WithSHA1:
+               hashType = SHA1
+       case SHA256WithRSA, SHA256WithRSAPSS, DSAWithSHA256, ECDSAWithSHA256, SM2WithSHA256:
+               hashType = SHA256
+       case SHA384WithRSA, SHA384WithRSAPSS, ECDSAWithSHA384:
+               hashType = SHA384
+       case SHA512WithRSA, SHA512WithRSAPSS, ECDSAWithSHA512:
+               hashType = SHA512
+       case MD2WithRSA, MD5WithRSA:
+               return InsecureAlgorithmError(algo)
+       case SM2WithSM3: // SM3WithRSA reserve
+               hashType = SM3
+       default:
+               return ErrUnsupportedAlgorithm
+       }
+
+       if !hashType.Available() {
+               return ErrUnsupportedAlgorithm
+       }
+       h := hashType.New()
+
+       h.Write(signed)
+       digest := h.Sum(nil)
+
+       switch pub := publicKey.(type) {
+       case *rsa.PublicKey:
+               if algo.isRSAPSS() {
+                       return rsa.VerifyPSS(pub, crypto.Hash(hashType), digest, signature, &rsa.PSSOptions{SaltLength: rsa.PSSSaltLengthEqualsHash})
+               } else {
+                       return rsa.VerifyPKCS1v15(pub, crypto.Hash(hashType), digest, signature)
+               }
+       case *dsa.PublicKey:
+               dsaSig := new(dsaSignature)
+               if rest, err := asn1.Unmarshal(signature, dsaSig); err != nil {
+                       return err
+               } else if len(rest) != 0 {
+                       return errors.New("x509: trailing data after DSA signature")
+               }
+               if dsaSig.R.Sign() <= 0 || dsaSig.S.Sign() <= 0 {
+                       return errors.New("x509: DSA signature contained zero or negative values")
+               }
+               if !dsa.Verify(pub, digest, dsaSig.R, dsaSig.S) {
+                       return errors.New("x509: DSA verification failure")
+               }
+               return
+       case *ecdsa.PublicKey:
+               ecdsaSig := new(ecdsaSignature)
+               if rest, err := asn1.Unmarshal(signature, ecdsaSig); err != nil {
+                       return err
+               } else if len(rest) != 0 {
+                       return errors.New("x509: trailing data after ECDSA signature")
+               }
+               if ecdsaSig.R.Sign() <= 0 || ecdsaSig.S.Sign() <= 0 {
+                       return errors.New("x509: ECDSA signature contained zero or negative values")
+               }
+               switch pub.Curve {
+               case P256Sm2():
+                       if !Verify(&PublicKey{
+                               Curve: pub.Curve,
+                               X:     pub.X,
+                               Y:     pub.Y,
+                       }, digest, ecdsaSig.R, ecdsaSig.S) {
+                               return errors.New("x509: SM2 verification failure")
+                       }
+               default:
+                       if !ecdsa.Verify(pub, digest, ecdsaSig.R, ecdsaSig.S) {
+                               return errors.New("x509: ECDSA verification failure")
+                       }
+               }
+               return
+       }
+       return ErrUnsupportedAlgorithm
+}
+
+// CheckCRLSignature checks that the signature in crl is from c.
+func (c *Certificate) CheckCRLSignature(crl *pkix.CertificateList) error {
+       algo := getSignatureAlgorithmFromAI(crl.SignatureAlgorithm)
+       return c.CheckSignature(algo, crl.TBSCertList.Raw, crl.SignatureValue.RightAlign())
+}
+
+type UnhandledCriticalExtension struct{}
+
+func (h UnhandledCriticalExtension) Error() string {
+       return "x509: unhandled critical extension"
+}
+
+type basicConstraints struct {
+       IsCA       bool `asn1:"optional"`
+       MaxPathLen int  `asn1:"optional,default:-1"`
+}
+
+// RFC 5280 4.2.1.4
+type policyInformation struct {
+       Policy asn1.ObjectIdentifier
+       // policyQualifiers omitted
+}
+
+// RFC 5280, 4.2.1.10
+type nameConstraints struct {
+       Permitted []generalSubtree `asn1:"optional,tag:0"`
+       Excluded  []generalSubtree `asn1:"optional,tag:1"`
+}
+
+type generalSubtree struct {
+       Name string `asn1:"tag:2,optional,ia5"`
+}
+
+// RFC 5280, 4.2.2.1
+type authorityInfoAccess struct {
+       Method   asn1.ObjectIdentifier
+       Location asn1.RawValue
+}
+
+// RFC 5280, 4.2.1.14
+type distributionPoint struct {
+       DistributionPoint distributionPointName `asn1:"optional,tag:0"`
+       Reason            asn1.BitString        `asn1:"optional,tag:1"`
+       CRLIssuer         asn1.RawValue         `asn1:"optional,tag:2"`
+}
+
+type distributionPointName struct {
+       FullName     asn1.RawValue    `asn1:"optional,tag:0"`
+       RelativeName pkix.RDNSequence `asn1:"optional,tag:1"`
+}
+
+// asn1Null is the ASN.1 encoding of a NULL value.
+var asn1Null = []byte{5, 0}
+
+func parsePublicKey(algo PublicKeyAlgorithm, keyData *publicKeyInfo) (interface{}, error) {
+       asn1Data := keyData.PublicKey.RightAlign()
+       switch algo {
+       case RSA:
+               // RSA public keys must have a NULL in the parameters
+               // (https://tools.ietf.org/html/rfc3279#section-2.3.1).
+               if !bytes.Equal(keyData.Algorithm.Parameters.FullBytes, asn1Null) {
+                       return nil, errors.New("x509: RSA key missing NULL parameters")
+               }
+
+               p := new(rsaPublicKey)
+               rest, err := asn1.Unmarshal(asn1Data, p)
+               if err != nil {
+                       return nil, err
+               }
+               if len(rest) != 0 {
+                       return nil, errors.New("x509: trailing data after RSA public key")
+               }
+
+               if p.N.Sign() <= 0 {
+                       return nil, errors.New("x509: RSA modulus is not a positive number")
+               }
+               if p.E <= 0 {
+                       return nil, errors.New("x509: RSA public exponent is not a positive number")
+               }
+
+               pub := &rsa.PublicKey{
+                       E: p.E,
+                       N: p.N,
+               }
+               return pub, nil
+       case DSA:
+               var p *big.Int
+               rest, err := asn1.Unmarshal(asn1Data, &p)
+               if err != nil {
+                       return nil, err
+               }
+               if len(rest) != 0 {
+                       return nil, errors.New("x509: trailing data after DSA public key")
+               }
+               paramsData := keyData.Algorithm.Parameters.FullBytes
+               params := new(dsaAlgorithmParameters)
+               rest, err = asn1.Unmarshal(paramsData, params)
+               if err != nil {
+                       return nil, err
+               }
+               if len(rest) != 0 {
+                       return nil, errors.New("x509: trailing data after DSA parameters")
+               }
+               if p.Sign() <= 0 || params.P.Sign() <= 0 || params.Q.Sign() <= 0 || params.G.Sign() <= 0 {
+                       return nil, errors.New("x509: zero or negative DSA parameter")
+               }
+               pub := &dsa.PublicKey{
+                       Parameters: dsa.Parameters{
+                               P: params.P,
+                               Q: params.Q,
+                               G: params.G,
+                       },
+                       Y: p,
+               }
+               return pub, nil
+       case ECDSA:
+               paramsData := keyData.Algorithm.Parameters.FullBytes
+               namedCurveOID := new(asn1.ObjectIdentifier)
+               rest, err := asn1.Unmarshal(paramsData, namedCurveOID)
+               if err != nil {
+                       return nil, err
+               }
+               if len(rest) != 0 {
+                       return nil, errors.New("x509: trailing data after ECDSA parameters")
+               }
+               namedCurve := namedCurveFromOID(*namedCurveOID)
+               if namedCurve == nil {
+                       return nil, errors.New("x509: unsupported elliptic curve")
+               }
+               x, y := elliptic.Unmarshal(namedCurve, asn1Data)
+               if x == nil {
+                       return nil, errors.New("x509: failed to unmarshal elliptic curve point")
+               }
+               pub := &ecdsa.PublicKey{
+                       Curve: namedCurve,
+                       X:     x,
+                       Y:     y,
+               }
+               return pub, nil
+       default:
+               return nil, nil
+       }
+}
+
+func parseSANExtension(value []byte) (dnsNames, emailAddresses []string, ipAddresses []net.IP, err error) {
+       // RFC 5280, 4.2.1.6
+
+       // SubjectAltName ::= GeneralNames
+       //
+       // GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
+       //
+       // GeneralName ::= CHOICE {
+       //      otherName                       [0]     OtherName,
+       //      rfc822Name                      [1]     IA5String,
+       //      dNSName                         [2]     IA5String,
+       //      x400Address                     [3]     ORAddress,
+       //      directoryName                   [4]     Name,
+       //      ediPartyName                    [5]     EDIPartyName,
+       //      uniformResourceIdentifier       [6]     IA5String,
+       //      iPAddress                       [7]     OCTET STRING,
+       //      registeredID                    [8]     OBJECT IDENTIFIER }
+       var seq asn1.RawValue
+       var rest []byte
+       if rest, err = asn1.Unmarshal(value, &seq); err != nil {
+               return
+       } else if len(rest) != 0 {
+               err = errors.New("x509: trailing data after X.509 extension")
+               return
+       }
+       if !seq.IsCompound || seq.Tag != 16 || seq.Class != 0 {
+               err = asn1.StructuralError{Msg: "bad SAN sequence"}
+               return
+       }
+
+       rest = seq.Bytes
+       for len(rest) > 0 {
+               var v asn1.RawValue
+               rest, err = asn1.Unmarshal(rest, &v)
+               if err != nil {
+                       return
+               }
+               switch v.Tag {
+               case 1:
+                       emailAddresses = append(emailAddresses, string(v.Bytes))
+               case 2:
+                       dnsNames = append(dnsNames, string(v.Bytes))
+               case 7:
+                       switch len(v.Bytes) {
+                       case net.IPv4len, net.IPv6len:
+                               ipAddresses = append(ipAddresses, v.Bytes)
+                       default:
+                               err = errors.New("x509: certificate contained IP address of length " + strconv.Itoa(len(v.Bytes)))
+                               return
+                       }
+               }
+       }
+
+       return
+}
+
+func parseCertificate(in *certificate) (*Certificate, error) {
+       out := new(Certificate)
+       out.Raw = in.Raw
+       out.RawTBSCertificate = in.TBSCertificate.Raw
+       out.RawSubjectPublicKeyInfo = in.TBSCertificate.PublicKey.Raw
+       out.RawSubject = in.TBSCertificate.Subject.FullBytes
+       out.RawIssuer = in.TBSCertificate.Issuer.FullBytes
+
+       out.Signature = in.SignatureValue.RightAlign()
+       out.SignatureAlgorithm =
+               getSignatureAlgorithmFromAI(in.TBSCertificate.SignatureAlgorithm)
+
+       out.PublicKeyAlgorithm =
+               getPublicKeyAlgorithmFromOID(in.TBSCertificate.PublicKey.Algorithm.Algorithm)
+       var err error
+       out.PublicKey, err = parsePublicKey(out.PublicKeyAlgorithm, &in.TBSCertificate.PublicKey)
+       if err != nil {
+               return nil, err
+       }
+
+       out.Version = in.TBSCertificate.Version + 1
+       out.SerialNumber = in.TBSCertificate.SerialNumber
+
+       var issuer, subject pkix.RDNSequence
+       if rest, err := asn1.Unmarshal(in.TBSCertificate.Subject.FullBytes, &subject); err != nil {
+               return nil, err
+       } else if len(rest) != 0 {
+               return nil, errors.New("x509: trailing data after X.509 subject")
+       }
+       if rest, err := asn1.Unmarshal(in.TBSCertificate.Issuer.FullBytes, &issuer); err != nil {
+               return nil, err
+       } else if len(rest) != 0 {
+               return nil, errors.New("x509: trailing data after X.509 subject")
+       }
+
+       out.Issuer.FillFromRDNSequence(&issuer)
+       out.Subject.FillFromRDNSequence(&subject)
+
+       out.NotBefore = in.TBSCertificate.Validity.NotBefore
+       out.NotAfter = in.TBSCertificate.Validity.NotAfter
+
+       for _, e := range in.TBSCertificate.Extensions {
+               out.Extensions = append(out.Extensions, e)
+               unhandled := false
+
+               if len(e.Id) == 4 && e.Id[0] == 2 && e.Id[1] == 5 && e.Id[2] == 29 {
+                       switch e.Id[3] {
+                       case 15:
+                               // RFC 5280, 4.2.1.3
+                               var usageBits asn1.BitString
+                               if rest, err := asn1.Unmarshal(e.Value, &usageBits); err != nil {
+                                       return nil, err
+                               } else if len(rest) != 0 {
+                                       return nil, errors.New("x509: trailing data after X.509 KeyUsage")
+                               }
+
+                               var usage int
+                               for i := 0; i < 9; i++ {
+                                       if usageBits.At(i) != 0 {
+                                               usage |= 1 << uint(i)
+                                       }
+                               }
+                               out.KeyUsage = KeyUsage(usage)
+
+                       case 19:
+                               // RFC 5280, 4.2.1.9
+                               var constraints basicConstraints
+                               if rest, err := asn1.Unmarshal(e.Value, &constraints); err != nil {
+                                       return nil, err
+                               } else if len(rest) != 0 {
+                                       return nil, errors.New("x509: trailing data after X.509 BasicConstraints")
+                               }
+
+                               out.BasicConstraintsValid = true
+                               out.IsCA = constraints.IsCA
+                               out.MaxPathLen = constraints.MaxPathLen
+                               out.MaxPathLenZero = out.MaxPathLen == 0
+
+                       case 17:
+                               out.DNSNames, out.EmailAddresses, out.IPAddresses, err = parseSANExtension(e.Value)
+                               if err != nil {
+                                       return nil, err
+                               }
+
+                               if len(out.DNSNames) == 0 && len(out.EmailAddresses) == 0 && len(out.IPAddresses) == 0 {
+                                       // If we didn't parse anything then we do the critical check, below.
+                                       unhandled = true
+                               }
+
+                       case 30:
+                               // RFC 5280, 4.2.1.10
+
+                               // NameConstraints ::= SEQUENCE {
+                               //      permittedSubtrees       [0]     GeneralSubtrees OPTIONAL,
+                               //      excludedSubtrees        [1]     GeneralSubtrees OPTIONAL }
+                               //
+                               // GeneralSubtrees ::= SEQUENCE SIZE (1..MAX) OF GeneralSubtree
+                               //
+                               // GeneralSubtree ::= SEQUENCE {
+                               //      base                    GeneralName,
+                               //      minimum         [0]     BaseDistance DEFAULT 0,
+                               //      maximum         [1]     BaseDistance OPTIONAL }
+                               //
+                               // BaseDistance ::= INTEGER (0..MAX)
+
+                               var constraints nameConstraints
+                               if rest, err := asn1.Unmarshal(e.Value, &constraints); err != nil {
+                                       return nil, err
+                               } else if len(rest) != 0 {
+                                       return nil, errors.New("x509: trailing data after X.509 NameConstraints")
+                               }
+
+                               if len(constraints.Excluded) > 0 && e.Critical {
+                                       return out, UnhandledCriticalExtension{}
+                               }
+
+                               for _, subtree := range constraints.Permitted {
+                                       if len(subtree.Name) == 0 {
+                                               if e.Critical {
+                                                       return out, UnhandledCriticalExtension{}
+                                               }
+                                               continue
+                                       }
+                                       out.PermittedDNSDomains = append(out.PermittedDNSDomains, subtree.Name)
+                               }
+
+                       case 31:
+                               // RFC 5280, 4.2.1.13
+
+                               // CRLDistributionPoints ::= SEQUENCE SIZE (1..MAX) OF DistributionPoint
+                               //
+                               // DistributionPoint ::= SEQUENCE {
+                               //     distributionPoint       [0]     DistributionPointName OPTIONAL,
+                               //     reasons                 [1]     ReasonFlags OPTIONAL,
+                               //     cRLIssuer               [2]     GeneralNames OPTIONAL }
+                               //
+                               // DistributionPointName ::= CHOICE {
+                               //     fullName                [0]     GeneralNames,
+                               //     nameRelativeToCRLIssuer [1]     RelativeDistinguishedName }
+
+                               var cdp []distributionPoint
+                               if rest, err := asn1.Unmarshal(e.Value, &cdp); err != nil {
+                                       return nil, err
+                               } else if len(rest) != 0 {
+                                       return nil, errors.New("x509: trailing data after X.509 CRL distribution point")
+                               }
+
+                               for i := range cdp {
+                                       // use index & pointer here to avoid value copy (each iteration copies 200 bytes)
+                                       dp := &cdp[i]
+                                       // Per RFC 5280, 4.2.1.13, one of distributionPoint or cRLIssuer may be empty.
+                                       if len(dp.DistributionPoint.FullName.Bytes) == 0 {
+                                               continue
+                                       }
+
+                                       var n asn1.RawValue
+                                       if _, err := asn1.Unmarshal(dp.DistributionPoint.FullName.Bytes, &n); err != nil {
+                                               return nil, err
+                                       }
+                                       // Trailing data after the fullName is
+                                       // allowed because other elements of
+                                       // the SEQUENCE can appear.
+
+                                       if n.Tag == 6 {
+                                               out.CRLDistributionPoints = append(out.CRLDistributionPoints, string(n.Bytes))
+                                       }
+                               }
+
+                       case 35:
+                               // RFC 5280, 4.2.1.1
+                               var a authKeyId
+                               if rest, err := asn1.Unmarshal(e.Value, &a); err != nil {
+                                       return nil, err
+                               } else if len(rest) != 0 {
+                                       return nil, errors.New("x509: trailing data after X.509 authority key-id")
+                               }
+                               out.AuthorityKeyId = a.Id
+
+                       case 37:
+                               // RFC 5280, 4.2.1.12.  Extended Key Usage
+
+                               // id-ce-extKeyUsage OBJECT IDENTIFIER ::= { id-ce 37 }
+                               //
+                               // ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId
+                               //
+                               // KeyPurposeId ::= OBJECT IDENTIFIER
+
+                               var keyUsage []asn1.ObjectIdentifier
+                               if rest, err := asn1.Unmarshal(e.Value, &keyUsage); err != nil {
+                                       return nil, err
+                               } else if len(rest) != 0 {
+                                       return nil, errors.New("x509: trailing data after X.509 ExtendedKeyUsage")
+                               }
+
+                               for _, u := range keyUsage {
+                                       if extKeyUsage, ok := extKeyUsageFromOID(u); ok {
+                                               out.ExtKeyUsage = append(out.ExtKeyUsage, extKeyUsage)
+                                       } else {
+                                               out.UnknownExtKeyUsage = append(out.UnknownExtKeyUsage, u)
+                                       }
+                               }
+
+                       case 14:
+                               // RFC 5280, 4.2.1.2
+                               var keyid []byte
+                               if rest, err := asn1.Unmarshal(e.Value, &keyid); err != nil {
+                                       return nil, err
+                               } else if len(rest) != 0 {
+                                       return nil, errors.New("x509: trailing data after X.509 key-id")
+                               }
+                               out.SubjectKeyId = keyid
+
+                       case 32:
+                               // RFC 5280 4.2.1.4: Certificate Policies
+                               var policies []policyInformation
+                               if rest, err := asn1.Unmarshal(e.Value, &policies); err != nil {
+                                       return nil, err
+                               } else if len(rest) != 0 {
+                                       return nil, errors.New("x509: trailing data after X.509 certificate policies")
+                               }
+                               out.PolicyIdentifiers = make([]asn1.ObjectIdentifier, len(policies))
+                               for i, policy := range policies {
+                                       out.PolicyIdentifiers[i] = policy.Policy
+                               }
+
+                       default:
+                               // Unknown extensions are recorded if critical.
+                               unhandled = true
+                       }
+               } else if e.Id.Equal(oidExtensionAuthorityInfoAccess) {
+                       // RFC 5280 4.2.2.1: Authority Information Access
+                       var aia []authorityInfoAccess
+                       if rest, err := asn1.Unmarshal(e.Value, &aia); err != nil {
+                               return nil, err
+                       } else if len(rest) != 0 {
+                               return nil, errors.New("x509: trailing data after X.509 authority information")
+                       }
+
+                       for _, v := range aia {
+                               // GeneralName: uniformResourceIdentifier [6] IA5String
+                               if v.Location.Tag != 6 {
+                                       continue
+                               }
+                               if v.Method.Equal(oidAuthorityInfoAccessOcsp) {
+                                       out.OCSPServer = append(out.OCSPServer, string(v.Location.Bytes))
+                               } else if v.Method.Equal(oidAuthorityInfoAccessIssuers) {
+                                       out.IssuingCertificateURL = append(out.IssuingCertificateURL, string(v.Location.Bytes))
+                               }
+                       }
+               } else {
+                       // Unknown extensions are recorded if critical.
+                       unhandled = true
+               }
+
+               if e.Critical && unhandled {
+                       out.UnhandledCriticalExtensions = append(out.UnhandledCriticalExtensions, e.Id)
+               }
+       }
+
+       return out, nil
+}
+
+// ParseCertificate parses a single certificate from the given ASN.1 DER data.
+func ParseCertificate(asn1Data []byte) (*Certificate, error) {
+       var cert certificate
+       rest, err := asn1.Unmarshal(asn1Data, &cert)
+       if err != nil {
+               return nil, err
+       }
+       if len(rest) > 0 {
+               return nil, asn1.SyntaxError{Msg: "trailing data"}
+       }
+
+       return parseCertificate(&cert)
+}
+
+// ParseCertificates parses one or more certificates from the given ASN.1 DER
+// data. The certificates must be concatenated with no intermediate padding.
+func ParseCertificates(asn1Data []byte) ([]*Certificate, error) {
+       var v []*certificate
+
+       for len(asn1Data) > 0 {
+               cert := new(certificate)
+               var err error
+               asn1Data, err = asn1.Unmarshal(asn1Data, cert)
+               if err != nil {
+                       return nil, err
+               }
+               v = append(v, cert)
+       }
+
+       ret := make([]*Certificate, len(v))
+       for i, ci := range v {
+               cert, err := parseCertificate(ci)
+               if err != nil {
+                       return nil, err
+               }
+               ret[i] = cert
+       }
+
+       return ret, nil
+}
+
+func reverseBitsInAByte(in byte) byte {
+       b1 := in>>4 | in<<4
+       b2 := b1>>2&0x33 | b1<<2&0xcc
+       b3 := b2>>1&0x55 | b2<<1&0xaa
+       return b3
+}
+
+// asn1BitLength returns the bit-length of bitString by considering the
+// most-significant bit in a byte to be the "first" bit. This convention
+// matches ASN.1, but differs from almost everything else.
+func asn1BitLength(bitString []byte) int {
+       bitLen := len(bitString) * 8
+
+       for i := range bitString {
+               b := bitString[len(bitString)-i-1]
+
+               for bit := uint(0); bit < 8; bit++ {
+                       if (b>>bit)&1 == 1 {
+                               return bitLen
+                       }
+                       bitLen--
+               }
+       }
+
+       return 0
+}
+
+var (
+       oidExtensionSubjectKeyId          = []int{2, 5, 29, 14}
+       oidExtensionKeyUsage              = []int{2, 5, 29, 15}
+       oidExtensionExtendedKeyUsage      = []int{2, 5, 29, 37}
+       oidExtensionAuthorityKeyId        = []int{2, 5, 29, 35}
+       oidExtensionBasicConstraints      = []int{2, 5, 29, 19}
+       oidExtensionSubjectAltName        = []int{2, 5, 29, 17}
+       oidExtensionCertificatePolicies   = []int{2, 5, 29, 32}
+       oidExtensionNameConstraints       = []int{2, 5, 29, 30}
+       oidExtensionCRLDistributionPoints = []int{2, 5, 29, 31}
+       oidExtensionAuthorityInfoAccess   = []int{1, 3, 6, 1, 5, 5, 7, 1, 1}
+)
+
+var (
+       oidAuthorityInfoAccessOcsp    = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 48, 1}
+       oidAuthorityInfoAccessIssuers = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 48, 2}
+)
+
+// oidNotInExtensions returns whether an extension with the given oid exists in
+// extensions.
+func oidInExtensions(oid asn1.ObjectIdentifier, extensions []pkix.Extension) bool {
+       for _, e := range extensions {
+               if e.Id.Equal(oid) {
+                       return true
+               }
+       }
+       return false
+}
+
+// marshalSANs marshals a list of addresses into a the contents of an X.509
+// SubjectAlternativeName extension.
+func marshalSANs(dnsNames, emailAddresses []string, ipAddresses []net.IP) (derBytes []byte, err error) {
+       var rawValues []asn1.RawValue
+       for _, name := range dnsNames {
+               rawValues = append(rawValues, asn1.RawValue{Tag: 2, Class: 2, Bytes: []byte(name)})
+       }
+       for _, email := range emailAddresses {
+               rawValues = append(rawValues, asn1.RawValue{Tag: 1, Class: 2, Bytes: []byte(email)})
+       }
+       for _, rawIP := range ipAddresses {
+               // If possible, we always want to encode IPv4 addresses in 4 bytes.
+               ip := rawIP.To4()
+               if ip == nil {
+                       ip = rawIP
+               }
+               rawValues = append(rawValues, asn1.RawValue{Tag: 7, Class: 2, Bytes: ip})
+       }
+       return asn1.Marshal(rawValues)
+}
+
+func buildExtensions(template *Certificate) (ret []pkix.Extension, err error) {
+       ret = make([]pkix.Extension, 10 /* maximum number of elements. */)
+       n := 0
+
+       if template.KeyUsage != 0 &&
+               !oidInExtensions(oidExtensionKeyUsage, template.ExtraExtensions) {
+               ret[n].Id = oidExtensionKeyUsage
+               ret[n].Critical = true
+
+               var a [2]byte
+               a[0] = reverseBitsInAByte(byte(template.KeyUsage))
+               a[1] = reverseBitsInAByte(byte(template.KeyUsage >> 8))
+
+               l := 1
+               if a[1] != 0 {
+                       l = 2
+               }
+
+               bitString := a[:l]
+               ret[n].Value, err = asn1.Marshal(asn1.BitString{Bytes: bitString, BitLength: asn1BitLength(bitString)})
+               if err != nil {
+                       return
+               }
+               n++
+       }
+
+       if (len(template.ExtKeyUsage) > 0 || len(template.UnknownExtKeyUsage) > 0) &&
+               !oidInExtensions(oidExtensionExtendedKeyUsage, template.ExtraExtensions) {
+               ret[n].Id = oidExtensionExtendedKeyUsage
+
+               var oids []asn1.ObjectIdentifier
+               for _, u := range template.ExtKeyUsage {
+                       if oid, ok := oidFromExtKeyUsage(u); ok {
+                               oids = append(oids, oid)
+                       } else {
+                               panic("internal error")
+                       }
+               }
+
+               oids = append(oids, template.UnknownExtKeyUsage...)
+
+               ret[n].Value, err = asn1.Marshal(oids)
+               if err != nil {
+                       return
+               }
+               n++
+       }
+
+       if template.BasicConstraintsValid && !oidInExtensions(oidExtensionBasicConstraints, template.ExtraExtensions) {
+               // Leaving MaxPathLen as zero indicates that no maximum path
+               // length is desired, unless MaxPathLenZero is set. A value of
+               // -1 causes encoding/asn1 to omit the value as desired.
+               maxPathLen := template.MaxPathLen
+               if maxPathLen == 0 && !template.MaxPathLenZero {
+                       maxPathLen = -1
+               }
+               ret[n].Id = oidExtensionBasicConstraints
+               ret[n].Value, err = asn1.Marshal(basicConstraints{template.IsCA, maxPathLen})
+               ret[n].Critical = true
+               if err != nil {
+                       return
+               }
+               n++
+       }
+
+       if len(template.SubjectKeyId) > 0 && !oidInExtensions(oidExtensionSubjectKeyId, template.ExtraExtensions) {
+               ret[n].Id = oidExtensionSubjectKeyId
+               ret[n].Value, err = asn1.Marshal(template.SubjectKeyId)
+               if err != nil {
+                       return
+               }
+               n++
+       }
+
+       if len(template.AuthorityKeyId) > 0 && !oidInExtensions(oidExtensionAuthorityKeyId, template.ExtraExtensions) {
+               ret[n].Id = oidExtensionAuthorityKeyId
+               ret[n].Value, err = asn1.Marshal(authKeyId{template.AuthorityKeyId})
+               if err != nil {
+                       return
+               }
+               n++
+       }
+
+       if (len(template.OCSPServer) > 0 || len(template.IssuingCertificateURL) > 0) &&
+               !oidInExtensions(oidExtensionAuthorityInfoAccess, template.ExtraExtensions) {
+               ret[n].Id = oidExtensionAuthorityInfoAccess
+               var aiaValues []authorityInfoAccess
+               for _, name := range template.OCSPServer {
+                       aiaValues = append(aiaValues, authorityInfoAccess{
+                               Method:   oidAuthorityInfoAccessOcsp,
+                               Location: asn1.RawValue{Tag: 6, Class: 2, Bytes: []byte(name)},
+                       })
+               }
+               for _, name := range template.IssuingCertificateURL {
+                       aiaValues = append(aiaValues, authorityInfoAccess{
+                               Method:   oidAuthorityInfoAccessIssuers,
+                               Location: asn1.RawValue{Tag: 6, Class: 2, Bytes: []byte(name)},
+                       })
+               }
+               ret[n].Value, err = asn1.Marshal(aiaValues)
+               if err != nil {
+                       return
+               }
+               n++
+       }
+
+       if (len(template.DNSNames) > 0 || len(template.EmailAddresses) > 0 || len(template.IPAddresses) > 0) &&
+               !oidInExtensions(oidExtensionSubjectAltName, template.ExtraExtensions) {
+               ret[n].Id = oidExtensionSubjectAltName
+               ret[n].Value, err = marshalSANs(template.DNSNames, template.EmailAddresses, template.IPAddresses)
+               if err != nil {
+                       return
+               }
+               n++
+       }
+
+       if len(template.PolicyIdentifiers) > 0 &&
+               !oidInExtensions(oidExtensionCertificatePolicies, template.ExtraExtensions) {
+               ret[n].Id = oidExtensionCertificatePolicies
+               policies := make([]policyInformation, len(template.PolicyIdentifiers))
+               for i, policy := range template.PolicyIdentifiers {
+                       policies[i].Policy = policy
+               }
+               ret[n].Value, err = asn1.Marshal(policies)
+               if err != nil {
+                       return
+               }
+               n++
+       }
+
+       if len(template.PermittedDNSDomains) > 0 &&
+               !oidInExtensions(oidExtensionNameConstraints, template.ExtraExtensions) {
+               ret[n].Id = oidExtensionNameConstraints
+               ret[n].Critical = template.PermittedDNSDomainsCritical
+
+               var out nameConstraints
+               out.Permitted = make([]generalSubtree, len(template.PermittedDNSDomains))
+               for i, permitted := range template.PermittedDNSDomains {
+                       out.Permitted[i] = generalSubtree{Name: permitted}
+               }
+               ret[n].Value, err = asn1.Marshal(out)
+               if err != nil {
+                       return
+               }
+               n++
+       }
+
+       if len(template.CRLDistributionPoints) > 0 &&
+               !oidInExtensions(oidExtensionCRLDistributionPoints, template.ExtraExtensions) {
+               ret[n].Id = oidExtensionCRLDistributionPoints
+
+               var crlDp []distributionPoint
+               for _, name := range template.CRLDistributionPoints {
+                       rawFullName, _ := asn1.Marshal(asn1.RawValue{Tag: 6, Class: 2, Bytes: []byte(name)})
+
+                       dp := distributionPoint{
+                               DistributionPoint: distributionPointName{
+                                       FullName: asn1.RawValue{Tag: 0, Class: 2, IsCompound: true, Bytes: rawFullName},
+                               },
+                       }
+                       crlDp = append(crlDp, dp)
+               }
+
+               ret[n].Value, err = asn1.Marshal(crlDp)
+               if err != nil {
+                       return
+               }
+               n++
+       }
+
+       // Adding another extension here? Remember to update the maximum number
+       // of elements in the make() at the top of the function.
+
+       return append(ret[:n], template.ExtraExtensions...), nil
+}
+
+func subjectBytes(cert *Certificate) ([]byte, error) {
+       if len(cert.RawSubject) > 0 {
+               return cert.RawSubject, nil
+       }
+
+       return asn1.Marshal(cert.Subject.ToRDNSequence())
+}
+
+// signingParamsForPublicKey returns the parameters to use for signing with
+// priv. If requestedSigAlgo is not zero then it overrides the default
+// signature algorithm.
+func signingParamsForPublicKey(pub interface{}, requestedSigAlgo SignatureAlgorithm) (hashFunc Hash, sigAlgo pkix.AlgorithmIdentifier, err error) {
+       var pubType PublicKeyAlgorithm
+
+       switch pub := pub.(type) {
+       case *rsa.PublicKey:
+               pubType = RSA
+               hashFunc = SHA256
+               sigAlgo.Algorithm = oidSignatureSHA256WithRSA
+               sigAlgo.Parameters = asn1.RawValue{
+                       Tag: 5,
+               }
+
+       case *ecdsa.PublicKey:
+               pubType = ECDSA
+               switch pub.Curve {
+               case elliptic.P224(), elliptic.P256():
+                       hashFunc = SHA256
+                       sigAlgo.Algorithm = oidSignatureECDSAWithSHA256
+               case elliptic.P384():
+                       hashFunc = SHA384
+                       sigAlgo.Algorithm = oidSignatureECDSAWithSHA384
+               case elliptic.P521():
+                       hashFunc = SHA512
+                       sigAlgo.Algorithm = oidSignatureECDSAWithSHA512
+               default:
+                       err = errors.New("x509: unknown elliptic curve")
+               }
+       case *PublicKey:
+               pubType = ECDSA
+               switch pub.Curve {
+               case P256Sm2():
+                       hashFunc = SM3
+                       sigAlgo.Algorithm = oidSignatureSM2WithSM3
+               default:
+                       err = errors.New("x509: unknown SM2 curve")
+               }
+       default:
+               err = errors.New("x509: only RSA and ECDSA keys supported")
+       }
+
+       if err != nil {
+               return
+       }
+
+       if requestedSigAlgo == 0 {
+               return
+       }
+
+       found := false
+       for _, details := range signatureAlgorithmDetails {
+               if details.algo == requestedSigAlgo {
+                       if details.pubKeyAlgo != pubType {
+                               err = errors.New("x509: requested SignatureAlgorithm does not match private key type")
+                               return
+                       }
+                       sigAlgo.Algorithm, hashFunc = details.oid, details.hash
+                       if hashFunc == 0 {
+                               err = errors.New("x509: cannot sign with hash function requested")
+                               return
+                       }
+                       if requestedSigAlgo.isRSAPSS() {
+                               sigAlgo.Parameters = rsaPSSParameters(hashFunc)
+                       }
+                       found = true
+                       break
+               }
+       }
+
+       if !found {
+               err = errors.New("x509: unknown SignatureAlgorithm")
+       }
+
+       return
+}
+
+// CreateCertificate creates a new certificate based on a template. The
+// following members of template are used: SerialNumber, Subject, NotBefore,
+// NotAfter, KeyUsage, ExtKeyUsage, UnknownExtKeyUsage, BasicConstraintsValid,
+// IsCA, MaxPathLen, SubjectKeyId, DNSNames, PermittedDNSDomainsCritical,
+// PermittedDNSDomains, SignatureAlgorithm.
+//
+// The certificate is signed by parent. If parent is equal to template then the
+// certificate is self-signed. The parameter pub is the public key of the
+// signee and priv is the private key of the signer.
+//
+// The returned slice is the certificate in DER encoding.
+//
+// All keys types that are implemented via crypto.Signer are supported (This
+// includes *rsa.PublicKey and *ecdsa.PublicKey.)
+func CreateCertificate(rand io.Reader, template, parent *Certificate, pub, priv interface{}) (cert []byte, err error) {
+       key, ok := priv.(crypto.Signer)
+       if !ok {
+               return nil, errors.New("x509: certificate private key does not implement crypto.Signer")
+       }
+
+       if template.SerialNumber == nil {
+               return nil, errors.New("x509: no SerialNumber given")
+       }
+
+       hashFunc, signatureAlgorithm, err := signingParamsForPublicKey(key.Public(), template.SignatureAlgorithm)
+       if err != nil {
+               return nil, err
+       }
+
+       publicKeyBytes, publicKeyAlgorithm, err := marshalPublicKey(pub)
+       if err != nil {
+               return nil, err
+       }
+
+       asn1Issuer, err := subjectBytes(parent)
+       if err != nil {
+               return
+       }
+
+       asn1Subject, err := subjectBytes(template)
+       if err != nil {
+               return
+       }
+
+       if !bytes.Equal(asn1Issuer, asn1Subject) && len(parent.SubjectKeyId) > 0 {
+               template.AuthorityKeyId = parent.SubjectKeyId
+       }
+
+       extensions, err := buildExtensions(template)
+       if err != nil {
+               return
+       }
+       encodedPublicKey := asn1.BitString{BitLength: len(publicKeyBytes) * 8, Bytes: publicKeyBytes}
+       c := tbsCertificate{
+               Version:            2,
+               SerialNumber:       template.SerialNumber,
+               SignatureAlgorithm: signatureAlgorithm,
+               Issuer:             asn1.RawValue{FullBytes: asn1Issuer},
+               Validity:           validity{template.NotBefore.UTC(), template.NotAfter.UTC()},
+               Subject:            asn1.RawValue{FullBytes: asn1Subject},
+               PublicKey:          publicKeyInfo{nil, publicKeyAlgorithm, encodedPublicKey},
+               Extensions:         extensions,
+       }
+
+       tbsCertContents, err := asn1.Marshal(c)
+       if err != nil {
+               return
+       }
+
+       c.Raw = tbsCertContents
+
+       h := hashFunc.New()
+       h.Write(tbsCertContents)
+       digest := h.Sum(nil)
+
+       var signerOpts crypto.SignerOpts
+       signerOpts = hashFunc
+       if template.SignatureAlgorithm != 0 && template.SignatureAlgorithm.isRSAPSS() {
+               signerOpts = &rsa.PSSOptions{
+                       SaltLength: rsa.PSSSaltLengthEqualsHash,
+                       Hash:       crypto.Hash(hashFunc),
+               }
+       }
+
+       var signature []byte
+       signature, err = key.Sign(rand, digest, signerOpts)
+       if err != nil {
+               return
+       }
+
+       return asn1.Marshal(certificate{
+               nil,
+               c,
+               signatureAlgorithm,
+               asn1.BitString{Bytes: signature, BitLength: len(signature) * 8},
+       })
+}
+
+// pemCRLPrefix is the magic string that indicates that we have a PEM encoded
+// CRL.
+var pemCRLPrefix = []byte("-----BEGIN X509 CRL")
+
+// pemType is the type of a PEM encoded CRL.
+var pemType = "X509 CRL"
+
+// ParseCRL parses a CRL from the given bytes. It's often the case that PEM
+// encoded CRLs will appear where they should be DER encoded, so this function
+// will transparently handle PEM encoding as long as there isn't any leading
+// garbage.
+func ParseCRL(crlBytes []byte) (*pkix.CertificateList, error) {
+       if bytes.HasPrefix(crlBytes, pemCRLPrefix) {
+               block, _ := pem.Decode(crlBytes)
+               if block != nil && block.Type == pemType {
+                       crlBytes = block.Bytes
+               }
+       }
+       return ParseDERCRL(crlBytes)
+}
+
+// ParseDERCRL parses a DER encoded CRL from the given bytes.
+func ParseDERCRL(derBytes []byte) (*pkix.CertificateList, error) {
+       certList := new(pkix.CertificateList)
+       if rest, err := asn1.Unmarshal(derBytes, certList); err != nil {
+               return nil, err
+       } else if len(rest) != 0 {
+               return nil, errors.New("x509: trailing data after CRL")
+       }
+       return certList, nil
+}
+
+// CreateCRL returns a DER encoded CRL, signed by this Certificate, that
+// contains the given list of revoked certificates.
+func (c *Certificate) CreateCRL(rand io.Reader, priv interface{}, revokedCerts []pkix.RevokedCertificate, now, expiry time.Time) (crlBytes []byte, err error) {
+       key, ok := priv.(crypto.Signer)
+       if !ok {
+               return nil, errors.New("x509: certificate private key does not implement crypto.Signer")
+       }
+
+       hashFunc, signatureAlgorithm, err := signingParamsForPublicKey(key.Public(), 0)
+       if err != nil {
+               return nil, err
+       }
+
+       // Force revocation times to UTC per RFC 5280.
+       revokedCertsUTC := make([]pkix.RevokedCertificate, len(revokedCerts))
+       for i, rc := range revokedCerts {
+               rc.RevocationTime = rc.RevocationTime.UTC()
+               revokedCertsUTC[i] = rc
+       }
+
+       tbsCertList := pkix.TBSCertificateList{
+               Version:             1,
+               Signature:           signatureAlgorithm,
+               Issuer:              c.Subject.ToRDNSequence(),
+               ThisUpdate:          now.UTC(),
+               NextUpdate:          expiry.UTC(),
+               RevokedCertificates: revokedCertsUTC,
+       }
+
+       // Authority Key Id
+       if len(c.SubjectKeyId) > 0 {
+               var aki pkix.Extension
+               aki.Id = oidExtensionAuthorityKeyId
+               aki.Value, err = asn1.Marshal(authKeyId{Id: c.SubjectKeyId})
+               if err != nil {
+                       return
+               }
+               tbsCertList.Extensions = append(tbsCertList.Extensions, aki)
+       }
+
+       tbsCertListContents, err := asn1.Marshal(tbsCertList)
+       if err != nil {
+               return
+       }
+
+       h := hashFunc.New()
+       h.Write(tbsCertListContents)
+       digest := h.Sum(nil)
+
+       var signature []byte
+       signature, err = key.Sign(rand, digest, hashFunc)
+       if err != nil {
+               return
+       }
+
+       return asn1.Marshal(pkix.CertificateList{
+               TBSCertList:        tbsCertList,
+               SignatureAlgorithm: signatureAlgorithm,
+               SignatureValue:     asn1.BitString{Bytes: signature, BitLength: len(signature) * 8},
+       })
+}
+
+// CertificateRequest represents a PKCS #10, certificate signature request.
+type CertificateRequest struct {
+       Raw                      []byte // Complete ASN.1 DER content (CSR, signature algorithm and signature).
+       RawTBSCertificateRequest []byte // Certificate request info part of raw ASN.1 DER content.
+       RawSubjectPublicKeyInfo  []byte // DER encoded SubjectPublicKeyInfo.
+       RawSubject               []byte // DER encoded Subject.
+
+       Version            int
+       Signature          []byte
+       SignatureAlgorithm SignatureAlgorithm
+
+       PublicKeyAlgorithm PublicKeyAlgorithm
+       PublicKey          interface{}
+
+       Subject pkix.Name
+
+       // Attributes is the dried husk of a bug and shouldn't be used.
+       Attributes []pkix.AttributeTypeAndValueSET
+
+       // Extensions contains raw X.509 extensions. When parsing CSRs, this
+       // can be used to extract extensions that are not parsed by this
+       // package.
+       Extensions []pkix.Extension
+
+       // ExtraExtensions contains extensions to be copied, raw, into any
+       // marshaled CSR. Values override any extensions that would otherwise
+       // be produced based on the other fields but are overridden by any
+       // extensions specified in Attributes.
+       //
+       // The ExtraExtensions field is not populated when parsing CSRs, see
+       // Extensions.
+       ExtraExtensions []pkix.Extension
+
+       // Subject Alternate Name values.
+       DNSNames       []string
+       EmailAddresses []string
+       IPAddresses    []net.IP
+}
+
+// These structures reflect the ASN.1 structure of X.509 certificate
+// signature requests (see RFC 2986):
+
+type tbsCertificateRequest struct {
+       Raw           asn1.RawContent
+       Version       int
+       Subject       asn1.RawValue
+       PublicKey     publicKeyInfo
+       RawAttributes []asn1.RawValue `asn1:"tag:0"`
+}
+
+type certificateRequest struct {
+       Raw                asn1.RawContent
+       TBSCSR             tbsCertificateRequest
+       SignatureAlgorithm pkix.AlgorithmIdentifier
+       SignatureValue     asn1.BitString
+}
+
+// oidExtensionRequest is a PKCS#9 OBJECT IDENTIFIER that indicates requested
+// extensions in a CSR.
+var oidExtensionRequest = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 9, 14}
+
+// newRawAttributes converts AttributeTypeAndValueSETs from a template
+// CertificateRequest's Attributes into tbsCertificateRequest RawAttributes.
+func newRawAttributes(attributes []pkix.AttributeTypeAndValueSET) ([]asn1.RawValue, error) {
+       var rawAttributes []asn1.RawValue
+       b, err := asn1.Marshal(attributes)
+       if err != nil {
+               return nil, err
+       }
+       rest, err := asn1.Unmarshal(b, &rawAttributes)
+       if err != nil {
+               return nil, err
+       }
+       if len(rest) != 0 {
+               return nil, errors.New("x509: failed to unmarshal raw CSR Attributes")
+       }
+       return rawAttributes, nil
+}
+
+// parseRawAttributes Unmarshals RawAttributes intos AttributeTypeAndValueSETs.
+func parseRawAttributes(rawAttributes []asn1.RawValue) []pkix.AttributeTypeAndValueSET {
+       var attributes []pkix.AttributeTypeAndValueSET
+       for _, rawAttr := range rawAttributes {
+               var attr pkix.AttributeTypeAndValueSET
+               rest, err := asn1.Unmarshal(rawAttr.FullBytes, &attr)
+               // Ignore attributes that don't parse into pkix.AttributeTypeAndValueSET
+               // (i.e.: challengePassword or unstructuredName).
+               if err == nil && len(rest) == 0 {
+                       attributes = append(attributes, attr)
+               }
+       }
+       return attributes
+}
+
+// parseCSRExtensions parses the attributes from a CSR and extracts any
+// requested extensions.
+func parseCSRExtensions(rawAttributes []asn1.RawValue) ([]pkix.Extension, error) {
+       // pkcs10Attribute reflects the Attribute structure from section 4.1 of
+       // https://tools.ietf.org/html/rfc2986.
+       type pkcs10Attribute struct {
+               Id     asn1.ObjectIdentifier
+               Values []asn1.RawValue `asn1:"set"`
+       }
+
+       var ret []pkix.Extension
+       for _, rawAttr := range rawAttributes {
+               var attr pkcs10Attribute
+               if rest, err := asn1.Unmarshal(rawAttr.FullBytes, &attr); err != nil || len(rest) != 0 || len(attr.Values) == 0 {
+                       // Ignore attributes that don't parse.
+                       continue
+               }
+
+               if !attr.Id.Equal(oidExtensionRequest) {
+                       continue
+               }
+
+               var extensions []pkix.Extension
+               if _, err := asn1.Unmarshal(attr.Values[0].FullBytes, &extensions); err != nil {
+                       return nil, err
+               }
+               ret = append(ret, extensions...)
+       }
+
+       return ret, nil
+}
+
+// CreateCertificateRequest creates a new certificate request based on a template.
+// The following members of template are used: Subject, Attributes,
+// SignatureAlgorithm, Extensions, DNSNames, EmailAddresses, and IPAddresses.
+// The private key is the private key of the signer.
+//
+// The returned slice is the certificate request in DER encoding.
+//
+// All keys types that are implemented via crypto.Signer are supported (This
+// includes *rsa.PublicKey and *ecdsa.PublicKey.)
+func CreateCertificateRequest(rand io.Reader, template *CertificateRequest, priv interface{}) (csr []byte, err error) {
+       key, ok := priv.(crypto.Signer)
+       if !ok {
+               return nil, errors.New("x509: certificate private key does not implement crypto.Signer")
+       }
+
+       var hashFunc Hash
+       var sigAlgo pkix.AlgorithmIdentifier
+       hashFunc, sigAlgo, err = signingParamsForPublicKey(key.Public(), template.SignatureAlgorithm)
+       if err != nil {
+               return nil, err
+       }
+
+       var publicKeyBytes []byte
+       var publicKeyAlgorithm pkix.AlgorithmIdentifier
+       publicKeyBytes, publicKeyAlgorithm, err = marshalPublicKey(key.Public())
+       if err != nil {
+               return nil, err
+       }
+
+       var extensions []pkix.Extension
+
+       if (len(template.DNSNames) > 0 || len(template.EmailAddresses) > 0 || len(template.IPAddresses) > 0) &&
+               !oidInExtensions(oidExtensionSubjectAltName, template.ExtraExtensions) {
+               sanBytes, err := marshalSANs(template.DNSNames, template.EmailAddresses, template.IPAddresses)
+               if err != nil {
+                       return nil, err
+               }
+
+               extensions = append(extensions, pkix.Extension{
+                       Id:    oidExtensionSubjectAltName,
+                       Value: sanBytes,
+               })
+       }
+
+       extensions = append(extensions, template.ExtraExtensions...)
+
+       var attributes []pkix.AttributeTypeAndValueSET
+       attributes = append(attributes, template.Attributes...)
+
+       if len(extensions) > 0 {
+               // specifiedExtensions contains all the extensions that we
+               // found specified via template.Attributes.
+               specifiedExtensions := make(map[string]bool)
+
+               for _, atvSet := range template.Attributes {
+                       if !atvSet.Type.Equal(oidExtensionRequest) {
+                               continue
+                       }
+
+                       for _, atvs := range atvSet.Value {
+                               for _, atv := range atvs {
+                                       specifiedExtensions[atv.Type.String()] = true
+                               }
+                       }
+               }
+
+               atvs := make([]pkix.AttributeTypeAndValue, 0, len(extensions))
+               for _, e := range extensions {
+                       if specifiedExtensions[e.Id.String()] {
+                               // Attributes already contained a value for
+                               // this extension and it takes priority.
+                               continue
+                       }
+
+                       atvs = append(atvs, pkix.AttributeTypeAndValue{
+                               // There is no place for the critical flag in a CSR.
+                               Type:  e.Id,
+                               Value: e.Value,
+                       })
+               }
+
+               // Append the extensions to an existing attribute if possible.
+               appended := false
+               for _, atvSet := range attributes {
+                       if !atvSet.Type.Equal(oidExtensionRequest) || len(atvSet.Value) == 0 {
+                               continue
+                       }
+
+                       atvSet.Value[0] = append(atvSet.Value[0], atvs...)
+                       appended = true
+                       break
+               }
+
+               // Otherwise, add a new attribute for the extensions.
+               if !appended {
+                       attributes = append(attributes, pkix.AttributeTypeAndValueSET{
+                               Type: oidExtensionRequest,
+                               Value: [][]pkix.AttributeTypeAndValue{
+                                       atvs,
+                               },
+                       })
+               }
+       }
+
+       asn1Subject := template.RawSubject
+       if len(asn1Subject) == 0 {
+               asn1Subject, err = asn1.Marshal(template.Subject.ToRDNSequence())
+               if err != nil {
+                       return
+               }
+       }
+
+       rawAttributes, err := newRawAttributes(attributes)
+       if err != nil {
+               return
+       }
+
+       tbsCSR := tbsCertificateRequest{
+               Version: 0, // PKCS #10, RFC 2986
+               Subject: asn1.RawValue{FullBytes: asn1Subject},
+               PublicKey: publicKeyInfo{
+                       Algorithm: publicKeyAlgorithm,
+                       PublicKey: asn1.BitString{
+                               Bytes:     publicKeyBytes,
+                               BitLength: len(publicKeyBytes) * 8,
+                       },
+               },
+               RawAttributes: rawAttributes,
+       }
+
+       tbsCSRContents, err := asn1.Marshal(tbsCSR)
+       if err != nil {
+               return
+       }
+       tbsCSR.Raw = tbsCSRContents
+
+       h := hashFunc.New()
+       h.Write(tbsCSRContents)
+       digest := h.Sum(nil)
+
+       var signature []byte
+       signature, err = key.Sign(rand, digest, hashFunc)
+       if err != nil {
+               return
+       }
+
+       return asn1.Marshal(certificateRequest{
+               TBSCSR:             tbsCSR,
+               SignatureAlgorithm: sigAlgo,
+               SignatureValue: asn1.BitString{
+                       Bytes:     signature,
+                       BitLength: len(signature) * 8,
+               },
+       })
+}
+
+// ParseCertificateRequest parses a single certificate request from the
+// given ASN.1 DER data.
+func ParseCertificateRequest(asn1Data []byte) (*CertificateRequest, error) {
+       var csr certificateRequest
+
+       rest, err := asn1.Unmarshal(asn1Data, &csr)
+       if err != nil {
+               return nil, err
+       } else if len(rest) != 0 {
+               return nil, asn1.SyntaxError{Msg: "trailing data"}
+       }
+
+       return parseCertificateRequest(&csr)
+}
+
+func parseCertificateRequest(in *certificateRequest) (*CertificateRequest, error) {
+       out := &CertificateRequest{
+               Raw: in.Raw,
+               RawTBSCertificateRequest: in.TBSCSR.Raw,
+               RawSubjectPublicKeyInfo:  in.TBSCSR.PublicKey.Raw,
+               RawSubject:               in.TBSCSR.Subject.FullBytes,
+
+               Signature:          in.SignatureValue.RightAlign(),
+               SignatureAlgorithm: getSignatureAlgorithmFromAI(in.SignatureAlgorithm),
+
+               PublicKeyAlgorithm: getPublicKeyAlgorithmFromOID(in.TBSCSR.PublicKey.Algorithm.Algorithm),
+
+               Version:    in.TBSCSR.Version,
+               Attributes: parseRawAttributes(in.TBSCSR.RawAttributes),
+       }
+
+       var err error
+       out.PublicKey, err = parsePublicKey(out.PublicKeyAlgorithm, &in.TBSCSR.PublicKey)
+       if err != nil {
+               return nil, err
+       }
+
+       var subject pkix.RDNSequence
+       if rest, err := asn1.Unmarshal(in.TBSCSR.Subject.FullBytes, &subject); err != nil {
+               return nil, err
+       } else if len(rest) != 0 {
+               return nil, errors.New("x509: trailing data after X.509 Subject")
+       }
+
+       out.Subject.FillFromRDNSequence(&subject)
+
+       if out.Extensions, err = parseCSRExtensions(in.TBSCSR.RawAttributes); err != nil {
+               return nil, err
+       }
+
+       for _, extension := range out.Extensions {
+               if extension.Id.Equal(oidExtensionSubjectAltName) {
+                       out.DNSNames, out.EmailAddresses, out.IPAddresses, err = parseSANExtension(extension.Value)
+                       if err != nil {
+                               return nil, err
+                       }
+               }
+       }
+
+       return out, nil
+}
+
+// CheckSignature reports whether the signature on c is valid.
+func (c *CertificateRequest) CheckSignature() error {
+       return checkSignature(c.SignatureAlgorithm, c.RawTBSCertificateRequest, c.Signature, c.PublicKey)
+}
+
+func ReadCertificateRequestFromMem(data []byte) (*CertificateRequest, error) {
+       block, _ := pem.Decode(data)
+       if block == nil {
+               return nil, errors.New("failed to decode certificate request")
+       }
+       return ParseCertificateRequest(block.Bytes)
+}
+
+func ReadCertificateRequestFromPem(FileName string) (*CertificateRequest, error) {
+       data, err := ioutil.ReadFile(FileName)
+       if err != nil {
+               return nil, err
+       }
+       return ReadCertificateRequestFromMem(data)
+}
+
+func CreateCertificateRequestToMem(template *CertificateRequest, privKey *PrivateKey) ([]byte, error) {
+       der, err := CreateCertificateRequest(rand.Reader, template, privKey)
+       if err != nil {
+               return nil, err
+       }
+       block := &pem.Block{
+               Type:  "CERTIFICATE REQUEST",
+               Bytes: der,
+       }
+       return pem.EncodeToMemory(block), nil
+}
+
+func CreateCertificateRequestToPem(FileName string, template *CertificateRequest,
+       privKey *PrivateKey) (bool, error) {
+       der, err := CreateCertificateRequest(rand.Reader, template, privKey)
+       if err != nil {
+               return false, err
+       }
+       block := &pem.Block{
+               Type:  "CERTIFICATE REQUEST",
+               Bytes: der,
+       }
+       file, err := os.Create(FileName)
+       if err != nil {
+               return false, err
+       }
+       defer file.Close()
+       err = pem.Encode(file, block)
+       if err != nil {
+               return false, err
+       }
+       return true, nil
+}
+
+func ReadCertificateFromMem(data []byte) (*Certificate, error) {
+       block, _ := pem.Decode(data)
+       if block == nil {
+               return nil, errors.New("failed to decode certificate request")
+       }
+       return ParseCertificate(block.Bytes)
+}
+
+func ReadCertificateFromPem(FileName string) (*Certificate, error) {
+       data, err := ioutil.ReadFile(FileName)
+       if err != nil {
+               return nil, err
+       }
+       return ReadCertificateFromMem(data)
+}
+
+func CreateCertificateToMem(template, parent *Certificate, pubKey *PublicKey, privKey *PrivateKey) ([]byte, error) {
+       der, err := CreateCertificate(rand.Reader, template, parent, pubKey, privKey)
+       if err != nil {
+               return nil, err
+       }
+       block := &pem.Block{
+               Type:  "CERTIFICATE",
+               Bytes: der,
+       }
+       return pem.EncodeToMemory(block), nil
+}
+
+func CreateCertificateToPem(FileName string, template, parent *Certificate, pubKey *PublicKey, privKey *PrivateKey) (bool, error) {
+       der, err := CreateCertificate(rand.Reader, template, parent, pubKey, privKey)
+       if err != nil {
+               return false, err
+       }
+       block := &pem.Block{
+               Type:  "CERTIFICATE",
+               Bytes: der,
+       }
+       file, err := os.Create(FileName)
+       if err != nil {
+               return false, err
+       }
+       defer file.Close()
+       err = pem.Encode(file, block)
+       if err != nil {
+               return false, err
+       }
+       return true, nil
+}

diff --git a/vendor/github.com/bytom/crypto/sm3/sm3.go b/vendor/github.com/bytom/crypto/sm3/sm3.go
new file mode 100644 (file)
index 0000000..45057c0
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/sm3/sm3.go
@@ -0,0 +1,193 @@
+package sm3
+
+import (
+       "encoding/binary"
+       "hash"
+)
+
+type SM3 struct {
+       digest      [8]uint32 // digest represents the partial evaluation of V
+       length      uint64    // length of the message
+       unhandleMsg []byte    // uint8  //
+}
+
+func (sm3 *SM3) ff0(x, y, z uint32) uint32 { return x ^ y ^ z }
+
+func (sm3 *SM3) ff1(x, y, z uint32) uint32 { return (x & y) | (x & z) | (y & z) }
+
+func (sm3 *SM3) gg0(x, y, z uint32) uint32 { return x ^ y ^ z }
+
+func (sm3 *SM3) gg1(x, y, z uint32) uint32 { return (x & y) | (^x & z) }
+
+func (sm3 *SM3) p0(x uint32) uint32 { return x ^ sm3.leftRotate(x, 9) ^ sm3.leftRotate(x, 17) }
+
+func (sm3 *SM3) p1(x uint32) uint32 { return x ^ sm3.leftRotate(x, 15) ^ sm3.leftRotate(x, 23) }
+
+func (sm3 *SM3) leftRotate(x uint32, i uint32) uint32 { return (x<<(i%32) | x>>(32-i%32)) }
+
+func (sm3 *SM3) pad() []byte {
+       msg := sm3.unhandleMsg
+       msg = append(msg, 0x80) // Append '1'
+       blockSize := 64         // Append until the resulting message length (in bits) is congruent to 448 (mod 512)
+       for len(msg)%blockSize != 56 {
+               msg = append(msg, 0x00)
+       }
+       // append message length
+       // not using loops so that compiler might benefit from it
+       msg = append(msg, uint8(sm3.length>>56&0xff))
+       msg = append(msg, uint8(sm3.length>>48&0xff))
+       msg = append(msg, uint8(sm3.length>>40&0xff))
+       msg = append(msg, uint8(sm3.length>>32&0xff))
+       msg = append(msg, uint8(sm3.length>>24&0xff))
+       msg = append(msg, uint8(sm3.length>>16&0xff))
+       msg = append(msg, uint8(sm3.length>>8&0xff))
+       msg = append(msg, uint8(sm3.length>>0&0xff))
+
+       if len(msg)%64 != 0 {
+               panic("------SM3 Pad: error msgLen =")
+       }
+       return msg
+}
+
+func (sm3 *SM3) update(msg []byte, nblocks int) {
+       var w [68]uint32
+       var w1 [64]uint32
+
+       a, b, c, d, e, f, g, h := sm3.digest[0], sm3.digest[1], sm3.digest[2], sm3.digest[3], sm3.digest[4], sm3.digest[5], sm3.digest[6], sm3.digest[7]
+       for len(msg) >= 64 {
+               for i := 0; i < 16; i++ {
+                       w[i] = binary.BigEndian.Uint32(msg[4*i : 4*(i+1)])
+               }
+               for i := 16; i < 68; i++ {
+                       w[i] = sm3.p1(w[i-16]^w[i-9]^sm3.leftRotate(w[i-3], 15)) ^ sm3.leftRotate(w[i-13], 7) ^ w[i-6]
+               }
+               for i := 0; i < 64; i++ {
+                       w1[i] = w[i] ^ w[i+4]
+               }
+               A, B, C, D, E, F, G, H := a, b, c, d, e, f, g, h
+               for i := 0; i < 16; i++ {
+                       SS1 := sm3.leftRotate(sm3.leftRotate(A, 12)+E+sm3.leftRotate(0x79cc4519, uint32(i)), 7)
+                       SS2 := SS1 ^ sm3.leftRotate(A, 12)
+                       TT1 := sm3.ff0(A, B, C) + D + SS2 + w1[i]
+                       TT2 := sm3.gg0(E, F, G) + H + SS1 + w[i]
+                       D = C
+                       C = sm3.leftRotate(B, 9)
+                       B = A
+                       A = TT1
+                       H = G
+                       G = sm3.leftRotate(F, 19)
+                       F = E
+                       E = sm3.p0(TT2)
+               }
+               for i := 16; i < 64; i++ {
+                       SS1 := sm3.leftRotate(sm3.leftRotate(A, 12)+E+sm3.leftRotate(0x7a879d8a, uint32(i)), 7)
+                       SS2 := SS1 ^ sm3.leftRotate(A, 12)
+                       TT1 := sm3.ff1(A, B, C) + D + SS2 + w1[i]
+                       TT2 := sm3.gg1(E, F, G) + H + SS1 + w[i]
+                       D = C
+                       C = sm3.leftRotate(B, 9)
+                       B = A
+                       A = TT1
+                       H = G
+                       G = sm3.leftRotate(F, 19)
+                       F = E
+                       E = sm3.p0(TT2)
+               }
+               a ^= A
+               b ^= B
+               c ^= C
+               d ^= D
+               e ^= E
+               f ^= F
+               g ^= G
+               h ^= H
+               msg = msg[64:]
+       }
+       sm3.digest[0], sm3.digest[1], sm3.digest[2], sm3.digest[3], sm3.digest[4], sm3.digest[5], sm3.digest[6], sm3.digest[7] = a, b, c, d, e, f, g, h
+}
+
+func New() hash.Hash {
+       var sm3 SM3
+
+       sm3.Reset()
+       return &sm3
+}
+
+// BlockSize, required by the hash.Hash interface.
+// BlockSize returns the hash's underlying block size.
+// The Write method must be able to accept any amount
+// of data, but it may operate more efficiently if all writes
+// are a multiple of the block size.
+func (sm3 *SM3) BlockSize() int { return 64 }
+
+// Size, required by the hash.Hash interface.
+// Size returns the number of bytes Sum will return.
+func (sm3 *SM3) Size() int { return 32 }
+
+// Reset clears the internal state by zeroing bytes in the state buffer.
+// This can be skipped for a newly-created hash state; the default zero-allocated state is correct.
+func (sm3 *SM3) Reset() {
+       // Reset digest
+       sm3.digest[0] = 0x7380166f
+       sm3.digest[1] = 0x4914b2b9
+       sm3.digest[2] = 0x172442d7
+       sm3.digest[3] = 0xda8a0600
+       sm3.digest[4] = 0xa96f30bc
+       sm3.digest[5] = 0x163138aa
+       sm3.digest[6] = 0xe38dee4d
+       sm3.digest[7] = 0xb0fb0e4e
+
+       sm3.length = 0 // Reset numberic states
+       sm3.unhandleMsg = []byte{}
+}
+
+// Write, required by the hash.Hash interface.
+// Write (via the embedded io.Writer interface) adds more data to the running hash.
+// It never returns an error.
+func (sm3 *SM3) Write(p []byte) (int, error) {
+       toWrite := len(p)
+       sm3.length += uint64(len(p) * 8)
+
+       msg := append(sm3.unhandleMsg, p...)
+       nblocks := len(msg) / sm3.BlockSize()
+       sm3.update(msg, nblocks)
+
+       // Update unhandleMsg
+       sm3.unhandleMsg = msg[nblocks*sm3.BlockSize():]
+
+       return toWrite, nil
+}
+
+// Sum, required by the hash.Hash interface.
+// Sum appends the current hash to b and returns the resulting slice.
+// It does not change the underlying hash state.
+func (sm3 *SM3) Sum(in []byte) []byte {
+       sm3.Write(in)
+       msg := sm3.pad()
+
+       // Finialize
+       sm3.update(msg, len(msg)/sm3.BlockSize())
+
+       // save hash to in
+       needed := sm3.Size()
+       if cap(in)-len(in) < needed {
+               newIn := make([]byte, len(in), len(in)+needed)
+               copy(newIn, in)
+               in = newIn
+       }
+       out := in[len(in) : len(in)+needed]
+
+       for i := 0; i < 8; i++ {
+               binary.BigEndian.PutUint32(out[i*4:], sm3.digest[i])
+       }
+       return out
+
+}
+
+func Sm3Sum(data []byte) []byte {
+       var sm3 SM3
+
+       sm3.Reset()
+       sm3.Write(data)
+       return sm3.Sum(nil)
+}

diff --git a/vendor/github.com/bytom/crypto/sm3/sm3_test.go b/vendor/github.com/bytom/crypto/sm3/sm3_test.go
new file mode 100644 (file)
index 0000000..428bcc2
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/sm3/sm3_test.go
@@ -0,0 +1,65 @@
+/*
+Copyright Suzhou Tongji Fintech Research Institute 2017 All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+                 http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package sm3
+
+import (
+       "fmt"
+       "io/ioutil"
+       "log"
+       "os"
+       "testing"
+)
+
+func byteToString(b []byte) string {
+       ret := ""
+       for i := 0; i < len(b); i++ {
+               ret += fmt.Sprintf("%02x", b[i])
+       }
+       fmt.Println("ret = ", ret)
+       return ret
+}
+func TestSm3(t *testing.T) {
+       msg := []byte("test")
+       err := ioutil.WriteFile("ifile", msg, os.FileMode(0644)) // 生成测试文件
+       if err != nil {
+               log.Fatal(err)
+       }
+       msg, err = ioutil.ReadFile("ifile")
+       if err != nil {
+               log.Fatal(err)
+       }
+       hw := New()
+       hw.Write(msg)
+       hash := hw.Sum(nil)
+       fmt.Println(hash)
+       fmt.Printf("hash = %d\n", len(hash))
+       fmt.Printf("%s\n", byteToString(hash))
+       hash1 := Sm3Sum(msg)
+       fmt.Println(hash1)
+       fmt.Printf("%s\n", byteToString(hash1))
+
+}
+
+func BenchmarkSm3(t *testing.B) {
+       t.ReportAllocs()
+       msg := []byte("test")
+       hw := New()
+       for i := 0; i < t.N; i++ {
+
+               hw.Sum(nil)
+               Sm3Sum(msg)
+       }
+}

diff --git a/vendor/github.com/bytom/encoding/blockchain/blockchain.go b/vendor/github.com/bytom/encoding/blockchain/blockchain.go
new file mode 100644 (file)
index 0000000..61ee843
--- /dev/null
+++ b/vendor/github.com/bytom/encoding/blockchain/blockchain.go
@@ -0,0 +1,203 @@
+// Package blockchain provides the tools for encoding
+// data primitives in blockchain structures
+package blockchain
+
+import (
+       "encoding/binary"
+       "errors"
+       "io"
+       "math"
+       "sync"
+
+       "github.com/bytom/encoding/bufpool"
+)
+
+var bufPool = sync.Pool{New: func() interface{} { return new([9]byte) }}
+
+var ErrRange = errors.New("value out of range")
+
+// Reader wraps a buffer and provides utilities for decoding
+// data primitives in blockchain structures. Its various read
+// calls may return a slice of the underlying buffer.
+type Reader struct {
+       buf []byte
+}
+
+// NewReader constructs a new reader with the provided bytes. It
+// does not create a copy of the bytes, so the caller is responsible
+// for copying the bytes if necessary.
+func NewReader(b []byte) *Reader {
+       return &Reader{buf: b}
+}
+
+// Len returns the number of unread bytes.
+func (r *Reader) Len() int {
+       return len(r.buf)
+}
+
+// ReadByte reads and returns the next byte from the input.
+//
+// It implements the io.ByteReader interface.
+func (r *Reader) ReadByte() (byte, error) {
+       if len(r.buf) == 0 {
+               return 0, io.EOF
+       }
+
+       b := r.buf[0]
+       r.buf = r.buf[1:]
+       return b, nil
+}
+
+// Read reads up to len(p) bytes into p. It implements
+// the io.Reader interface.
+func (r *Reader) Read(p []byte) (n int, err error) {
+       n = copy(p, r.buf)
+       r.buf = r.buf[n:]
+       if len(r.buf) == 0 {
+               err = io.EOF
+       }
+       return
+}
+
+func ReadVarint31(r *Reader) (uint32, error) {
+       val, err := binary.ReadUvarint(r)
+       if err != nil {
+               return 0, err
+       }
+       if val > math.MaxInt32 {
+               return 0, ErrRange
+       }
+       return uint32(val), nil
+}
+
+func ReadVarint63(r *Reader) (uint64, error) {
+       val, err := binary.ReadUvarint(r)
+       if err != nil {
+               return 0, err
+       }
+       if val > math.MaxInt64 {
+               return 0, ErrRange
+       }
+       return val, nil
+}
+
+func ReadVarstr31(r *Reader) ([]byte, error) {
+       l, err := ReadVarint31(r)
+       if err != nil {
+               return nil, err
+       }
+       if l == 0 {
+               return nil, nil
+       }
+       if int(l) > len(r.buf) {
+               return nil, io.ErrUnexpectedEOF
+       }
+       str := r.buf[:l]
+       r.buf = r.buf[l:]
+       return str, nil
+}
+
+// ReadVarstrList reads a varint31 length prefix followed by
+// that many varstrs.
+func ReadVarstrList(r *Reader) (result [][]byte, err error) {
+       nelts, err := ReadVarint31(r)
+       if err != nil {
+               return nil, err
+       }
+       if nelts == 0 {
+               return nil, nil
+       }
+
+       for ; nelts > 0 && err == nil; nelts-- {
+               var s []byte
+               s, err = ReadVarstr31(r)
+               result = append(result, s)
+       }
+       if len(result) < int(nelts) {
+               err = io.ErrUnexpectedEOF
+       }
+       return result, err
+}
+
+// ReadExtensibleString reads a varint31 length prefix and that many
+// bytes from r. It then calls the given function to consume those
+// bytes, returning any unconsumed suffix.
+func ReadExtensibleString(r *Reader, f func(*Reader) error) (suffix []byte, err error) {
+       s, err := ReadVarstr31(r)
+       if err != nil {
+               return nil, err
+       }
+
+       sr := NewReader(s)
+       err = f(sr)
+       if err != nil {
+               return nil, err
+       }
+       return sr.buf, nil
+}
+
+func WriteVarint31(w io.Writer, val uint64) (int, error) {
+       if val > math.MaxInt32 {
+               return 0, ErrRange
+       }
+       buf := bufPool.Get().(*[9]byte)
+       n := binary.PutUvarint(buf[:], val)
+       b, err := w.Write(buf[:n])
+       bufPool.Put(buf)
+       return b, err
+}
+
+func WriteVarint63(w io.Writer, val uint64) (int, error) {
+       if val > math.MaxInt64 {
+               return 0, ErrRange
+       }
+       buf := bufPool.Get().(*[9]byte)
+       n := binary.PutUvarint(buf[:], val)
+       b, err := w.Write(buf[:n])
+       bufPool.Put(buf)
+       return b, err
+}
+
+func WriteVarstr31(w io.Writer, str []byte) (int, error) {
+       n, err := WriteVarint31(w, uint64(len(str)))
+       if err != nil {
+               return n, err
+       }
+       n2, err := w.Write(str)
+       return n + n2, err
+}
+
+// WriteVarstrList writes a varint31 length prefix followed by the
+// elements of l as varstrs.
+func WriteVarstrList(w io.Writer, l [][]byte) (int, error) {
+       n, err := WriteVarint31(w, uint64(len(l)))
+       if err != nil {
+               return n, err
+       }
+       for _, s := range l {
+               n2, err := WriteVarstr31(w, s)
+               n += n2
+               if err != nil {
+                       return n, err
+               }
+       }
+       return n, err
+}
+
+// WriteExtensibleString sends the output of the given function, plus
+// the given suffix, to w, together with a varint31 length prefix.
+func WriteExtensibleString(w io.Writer, suffix []byte, f func(io.Writer) error) (int, error) {
+       buf := bufpool.Get()
+       defer bufpool.Put(buf)
+       err := f(buf)
+       if err != nil {
+               return 0, err
+       }
+       if len(suffix) > 0 {
+               _, err := buf.Write(suffix)
+               if err != nil {
+                       return 0, err
+               }
+       }
+       return WriteVarstr31(w, buf.Bytes())
+}

diff --git a/vendor/github.com/bytom/encoding/bufpool/bufpool.go b/vendor/github.com/bytom/encoding/bufpool/bufpool.go
new file mode 100644 (file)
index 0000000..bd59317
--- /dev/null
+++ b/vendor/github.com/bytom/encoding/bufpool/bufpool.go
@@ -0,0 +1,35 @@
+// Package bufpool is a freelist for bytes.Buffer objects.
+package bufpool
+
+import (
+       "bytes"
+       "sync"
+)
+
+var pool = &sync.Pool{New: func() interface{} { return bytes.NewBuffer(nil) }}
+
+// Get returns an initialized bytes.Buffer object.
+// It is like new(bytes.Buffer) except it uses the free list.
+// The caller should call Put when finished with the returned object.
+// Since Buffer.Bytes() returns the buffer's underlying slice,
+// it is not safe for that slice to escape the caller.
+// If the bytes need to escape, CopyBytes should be used.
+func Get() *bytes.Buffer {
+       return pool.Get().(*bytes.Buffer)
+}
+
+// Put resets the buffer and adds it to the freelist.
+func Put(b *bytes.Buffer) {
+       b.Reset()
+       pool.Put(b)
+}
+
+// CopyBytes returns a copy of the bytes contained in the buffer.
+// This slice is safe from updates in the underlying buffer,
+// allowing the buffer to be placed back in the free list.
+func CopyBytes(buf *bytes.Buffer) []byte {
+       b := buf.Bytes()
+       b2 := make([]byte, len(b))
+       copy(b2, b)
+       return b2
+}

diff --git a/vendor/github.com/bytom/errors/doc.go b/vendor/github.com/bytom/errors/doc.go
new file mode 100644 (file)
index 0000000..0437cd4
--- /dev/null
+++ b/vendor/github.com/bytom/errors/doc.go
@@ -0,0 +1,57 @@
+/*
+Package errors implements a basic error wrapping pattern, so that errors can be
+annotated with additional information without losing the original error.
+
+Example:
+
+       import "chain/errors"
+
+       func query() error {
+               err := pq.Exec("SELECT...")
+               if err != nil {
+                       return errors.Wrap(err, "select query failed")
+               }
+
+               err = pq.Exec("INSERT...")
+               if err != nil {
+                       return errors.Wrap(err, "insert query failed")
+               }
+
+               return nil
+       }
+
+       func main() {
+               err := query()
+               if _, ok := errors.Root(err).(sql.ErrNoRows); ok {
+                       log.Println("There were no results")
+                       return
+               } else if err != nil {
+                       log.Println(err)
+                       return
+               }
+
+               log.Println("success")
+       }
+
+When to wrap errors
+
+Errors should be wrapped with additional messages when the context is ambiguous.
+This includes when the error could arise in multiple locations in the same
+function, when the error is very common and likely to appear at different points
+in the call tree (e.g., JSON serialization errors), or when you need specific
+parameters alongside the original error message.
+
+Error handling best practices
+
+Errors are part of a function's interface. If you expect the caller to perform
+conditional error handling, you should document the errors returned by your
+function in a function comment, and include it as part of your unit tests.
+
+Be disciplined about validating user input. Programs should draw a very clear
+distinction between user errors and internal errors.
+
+Avoid redundant error logging. If you return an error, assume it will be logged
+higher up the call stack. For a given project, choose an appropriate layer to
+handle error logging.
+*/
+package errors

diff --git a/vendor/github.com/bytom/errors/errors.go b/vendor/github.com/bytom/errors/errors.go
new file mode 100644 (file)
index 0000000..26e137d
--- /dev/null
+++ b/vendor/github.com/bytom/errors/errors.go
@@ -0,0 +1,189 @@
+package errors
+
+import (
+       "errors"
+       "fmt"
+       "strings"
+)
+
+// New returns an error that formats as the given text.
+func New(text string) error {
+       return errors.New(text)
+}
+
+// wrapperError satisfies the error interface.
+type wrapperError struct {
+       msg    string
+       detail []string
+       data   map[string]interface{}
+       stack  []StackFrame
+       root   error
+}
+
+// It satisfies the error interface.
+func (e wrapperError) Error() string {
+       return e.msg
+}
+
+// Root returns the original error that was wrapped by one or more
+// calls to Wrap. If e does not wrap other errors, it will be returned
+// as-is.
+func Root(e error) error {
+       if wErr, ok := e.(wrapperError); ok {
+               return wErr.root
+       }
+       return e
+}
+
+// wrap adds a context message and stack trace to err and returns a new error
+// containing the new context. This function is meant to be composed within
+// other exported functions, such as Wrap and WithDetail.
+// The argument stackSkip is the number of stack frames to ascend when
+// generating stack straces, where 0 is the caller of wrap.
+func wrap(err error, msg string, stackSkip int) error {
+       if err == nil {
+               return nil
+       }
+
+       werr, ok := err.(wrapperError)
+       if !ok {
+               werr.root = err
+               werr.msg = err.Error()
+               werr.stack = getStack(stackSkip+2, stackTraceSize)
+       }
+       if msg != "" {
+               werr.msg = msg + ": " + werr.msg
+       }
+
+       return werr
+}
+
+// Wrap adds a context message and stack trace to err and returns a new error
+// with the new context. Arguments are handled as in fmt.Print.
+// Use Root to recover the original error wrapped by one or more calls to Wrap.
+// Use Stack to recover the stack trace.
+// Wrap returns nil if err is nil.
+func Wrap(err error, a ...interface{}) error {
+       if err == nil {
+               return nil
+       }
+       return wrap(err, fmt.Sprint(a...), 1)
+}
+
+// Wrapf is like Wrap, but arguments are handled as in fmt.Printf.
+func Wrapf(err error, format string, a ...interface{}) error {
+       if err == nil {
+               return nil
+       }
+       return wrap(err, fmt.Sprintf(format, a...), 1)
+}
+
+// WithDetail returns a new error that wraps
+// err as a chain error messsage containing text
+// as its additional context.
+// Function Detail will return the given text
+// when called on the new error value.
+func WithDetail(err error, text string) error {
+       if err == nil {
+               return nil
+       }
+       if text == "" {
+               return err
+       }
+       e1 := wrap(err, text, 1).(wrapperError)
+       e1.detail = append(e1.detail, text)
+       return e1
+}
+
+// WithDetailf is like WithDetail, except it formats
+// the detail message as in fmt.Printf.
+// Function Detail will return the formatted text
+// when called on the new error value.
+func WithDetailf(err error, format string, v ...interface{}) error {
+       if err == nil {
+               return nil
+       }
+       text := fmt.Sprintf(format, v...)
+       e1 := wrap(err, text, 1).(wrapperError)
+       e1.detail = append(e1.detail, text)
+       return e1
+}
+
+// Detail returns the detail message contained in err, if any.
+// An error has a detail message if it was made by WithDetail
+// or WithDetailf.
+func Detail(err error) string {
+       wrapper, ok := err.(wrapperError)
+       if !ok {
+               return err.Error()
+       }
+       return strings.Join(wrapper.detail, "; ")
+}
+
+// withData returns a new error that wraps err
+// as a chain error message containing v as
+// an extra data item.
+// Calling Data on the returned error yields v.
+// Note that if err already has a data item,
+// it will not be accessible via the returned error value.
+func withData(err error, v map[string]interface{}) error {
+       if err == nil {
+               return nil
+       }
+       e1 := wrap(err, "", 1).(wrapperError)
+       e1.data = v
+       return e1
+}
+
+// WithData returns a new error that wraps err
+// as a chain error message containing a value of type
+// map[string]interface{} as an extra data item.
+// The map contains the values in the map in err,
+// if any, plus the items in keyval.
+// Keyval takes the form
+//   k1, v1, k2, v2, ...
+// Values kN must be strings.
+// Calling Data on the returned error yields the map.
+// Note that if err already has a data item of any other type,
+// it will not be accessible via the returned error value.
+func WithData(err error, keyval ...interface{}) error {
+       if err == nil {
+               return nil
+       }
+       // TODO(kr): add vet check for odd-length keyval and non-string keys
+       newkv := make(map[string]interface{})
+       for k, v := range Data(err) {
+               newkv[k] = v
+       }
+       for i := 0; i < len(keyval); i += 2 {
+               newkv[keyval[i].(string)] = keyval[i+1]
+       }
+       return withData(err, newkv)
+}
+
+// Data returns the data item in err, if any.
+func Data(err error) map[string]interface{} {
+       wrapper, _ := err.(wrapperError)
+       return wrapper.data
+}
+
+// Sub returns an error containing root as its root and
+// taking all other metadata (stack trace, detail, message,
+// and data items) from err.
+//
+// Sub returns nil when either root or err is nil.
+//
+// Use this when you need to substitute a new root error in place
+// of an existing error that may already hold a stack trace
+// or other metadata.
+func Sub(root, err error) error {
+       if wrapper, ok := err.(wrapperError); ok && root != nil {
+               wrapper.root = Root(root)
+               wrapper.msg = root.Error()
+               root = wrapper
+       }
+       if err == nil {
+               return nil
+       }
+       return Wrap(root, err.Error())
+}

diff --git a/vendor/github.com/bytom/errors/errors_test.go b/vendor/github.com/bytom/errors/errors_test.go
new file mode 100644 (file)
index 0000000..88cf374
--- /dev/null
+++ b/vendor/github.com/bytom/errors/errors_test.go
@@ -0,0 +1,142 @@
+package errors
+
+import (
+       "errors"
+       "reflect"
+       "strings"
+       "testing"
+)
+
+func TestWrap(t *testing.T) {
+       err := errors.New("0")
+       err1 := Wrap(err, "1")
+       err2 := Wrap(err1, "2")
+       err3 := Wrap(err2)
+
+       if got := Root(err1); got != err {
+               t.Fatalf("Root(%v)=%v want %v", err1, got, err)
+       }
+
+       if got := Root(err2); got != err {
+               t.Fatalf("Root(%v)=%v want %v", err2, got, err)
+       }
+
+       if err2.Error() != "2: 1: 0" {
+               t.Fatalf("err msg = %s want '2: 1: 0'", err2.Error())
+       }
+
+       if err3.Error() != "2: 1: 0" {
+               t.Fatalf("err msg = %s want '2: 1: 0'", err3.Error())
+       }
+
+       stack := Stack(err1)
+       if len(stack) == 0 {
+               t.Fatalf("len(stack) = %v want > 0", len(stack))
+       }
+       if !strings.Contains(stack[0].String(), "TestWrap") {
+               t.Fatalf("first stack frame should contain \"TestWrap\": %v", stack[0].String())
+       }
+
+       if !reflect.DeepEqual(Stack(err2), Stack(err1)) {
+               t.Errorf("err2 stack got %v want %v", Stack(err2), Stack(err1))
+       }
+
+       if !reflect.DeepEqual(Stack(err3), Stack(err1)) {
+               t.Errorf("err3 stack got %v want %v", Stack(err3), Stack(err1))
+       }
+}
+
+func TestWrapNil(t *testing.T) {
+       var err error
+
+       err1 := Wrap(err, "1")
+       if err1 != nil {
+               t.Fatal("wrapping nil error should yield nil")
+       }
+}
+
+func TestWrapf(t *testing.T) {
+       err := errors.New("0")
+       err1 := Wrapf(err, "there are %d errors being wrapped", 1)
+       if err1.Error() != "there are 1 errors being wrapped: 0" {
+               t.Fatalf("err msg = %s want 'there are 1 errors being wrapped: 0'", err1.Error())
+       }
+}
+
+func TestWrapMsg(t *testing.T) {
+       err := errors.New("rooti")
+       err1 := Wrap(err, "cherry", " ", "guava")
+       if err1.Error() != "cherry guava: rooti" {
+               t.Fatalf("err msg = %s want 'cherry guava: rooti'", err1.Error())
+       }
+}
+
+func TestDetail(t *testing.T) {
+       root := errors.New("foo")
+       cases := []struct {
+               err     error
+               detail  string
+               message string
+       }{
+               {root, "foo", "foo"},
+               {WithDetail(root, "bar"), "bar", "bar: foo"},
+               {WithDetail(WithDetail(root, "bar"), "baz"), "bar; baz", "baz: bar: foo"},
+               {Wrap(WithDetail(root, "bar"), "baz"), "bar", "baz: bar: foo"},
+       }
+
+       for _, test := range cases {
+               if got := Detail(test.err); got != test.detail {
+                       t.Errorf("Detail(%v) = %v want %v", test.err, got, test.detail)
+               }
+               if got := Root(test.err); got != root {
+                       t.Errorf("Root(%v) = %v want %v", test.err, got, root)
+               }
+               if got := test.err.Error(); got != test.message {
+                       t.Errorf("(%v).Error() = %v want %v", test.err, got, test.message)
+               }
+       }
+}
+
+func TestData(t *testing.T) {
+       root := errors.New("foo")
+       cases := []struct {
+               err  error
+               data interface{}
+       }{
+               {WithData(root, "a", "b"), map[string]interface{}{"a": "b"}},
+               {WithData(WithData(root, "a", "b"), "c", "d"), map[string]interface{}{"a": "b", "c": "d"}},
+               {Wrap(WithData(root, "a", "b"), "baz"), map[string]interface{}{"a": "b"}},
+       }
+
+       for _, test := range cases {
+               if got := Data(test.err); !reflect.DeepEqual(got, test.data) {
+                       t.Errorf("Data(%#v) = %v want %v", test.err, got, test.data)
+               }
+               if got := Root(test.err); got != root {
+                       t.Errorf("Root(%#v) = %v want %v", test.err, got, root)
+               }
+       }
+}
+
+func TestSub(t *testing.T) {
+       x := errors.New("x")
+       y := errors.New("y")
+       cases := []struct{ new, old, want error }{
+               {nil, nil, nil},
+               {x, nil, nil},
+               {nil, Wrap(y), nil},
+               {Wrap(x), nil, nil},
+               {nil, y, nil},
+               {x, y, errors.New("y: x")},
+               {Wrap(x), y, errors.New("y: x")},
+               {x, Wrap(y), errors.New("y: x")},
+               {Wrap(x, "z"), Wrap(y), errors.New("y: z: x")},
+       }
+
+       for _, test := range cases {
+               got := Sub(test.new, test.old)
+               if !(got == nil && test.want == nil || got.Error() == test.want.Error()) {
+                       t.Errorf("Sub(%#v, %#v) = %v, want %v", test.new, test.old, got, test.want)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/errors/stack.go b/vendor/github.com/bytom/errors/stack.go
new file mode 100644 (file)
index 0000000..c471c07
--- /dev/null
+++ b/vendor/github.com/bytom/errors/stack.go
@@ -0,0 +1,51 @@
+package errors
+
+import (
+       "fmt"
+       "runtime"
+)
+
+const stackTraceSize = 10
+
+// StackFrame represents a single entry in a stack trace.
+type StackFrame struct {
+       Func string
+       File string
+       Line int
+}
+
+// String satisfies the fmt.Stringer interface.
+func (f StackFrame) String() string {
+       return fmt.Sprintf("%s:%d - %s", f.File, f.Line, f.Func)
+}
+
+// Stack returns the stack trace of an error. The error must contain the stack
+// trace, or wrap an error that has a stack trace,
+func Stack(err error) []StackFrame {
+       if wErr, ok := err.(wrapperError); ok {
+               return wErr.stack
+       }
+       return nil
+}
+
+// getStack is a formatting wrapper around runtime.Callers. It returns a stack
+// trace in the form of a StackFrame slice.
+func getStack(skip int, size int) []StackFrame {
+       var (
+               pc    = make([]uintptr, size)
+               calls = runtime.Callers(skip+1, pc)
+               trace []StackFrame
+       )
+
+       for i := 0; i < calls; i++ {
+               f := runtime.FuncForPC(pc[i])
+               file, line := f.FileLine(pc[i] - 1)
+               trace = append(trace, StackFrame{
+                       Func: f.Name(),
+                       File: file,
+                       Line: line,
+               })
+       }
+
+       return trace
+}

diff --git a/vendor/github.com/bytom/errors/writer.go b/vendor/github.com/bytom/errors/writer.go
new file mode 100644 (file)
index 0000000..fd59b65
--- /dev/null
+++ b/vendor/github.com/bytom/errors/writer.go
@@ -0,0 +1,46 @@
+package errors
+
+import "io"
+
+// NewWriter returns a new Writer that writes to w
+// until an error is returned.
+func NewWriter(w io.Writer) *Writer {
+       return &Writer{w: w}
+}
+
+// Writer is in an implementation of the
+// "sticky error writer" pattern as described
+// in https://blog.golang.org/errors-are-values.
+//
+// A Writer makes one call
+// on the underlying writer for each call to Write,
+// until an error is returned. From that point on,
+// it makes no calls on the underlying writer,
+// and returns the same error value every time.
+type Writer struct {
+       w   io.Writer
+       n   int64
+       err error
+}
+
+// Write makes one call on the underlying writer
+// if no error has previously occurred.
+func (w *Writer) Write(buf []byte) (n int, err error) {
+       if w.err != nil {
+               return 0, w.err
+       }
+       n, w.err = w.w.Write(buf)
+       w.n += int64(n)
+       return n, w.err
+}
+
+// Err returns the first error encountered by Write, if any.
+func (w *Writer) Err() error {
+       return w.err
+}
+
+// Written returns the number of bytes written
+// to the underlying writer.
+func (w *Writer) Written() int64 {
+       return w.n
+}

diff --git a/vendor/github.com/bytom/errors/writer_test.go b/vendor/github.com/bytom/errors/writer_test.go
new file mode 100644 (file)
index 0000000..e8f800b
--- /dev/null
+++ b/vendor/github.com/bytom/errors/writer_test.go
@@ -0,0 +1,51 @@
+package errors
+
+import (
+       "io"
+       "testing"
+)
+
+func TestWriter(t *testing.T) {
+       errX := New("x")
+       tw := testWriter{nil, errX, nil}
+       w := NewWriter(&tw)
+       _, err := w.Write([]byte{1})
+       if err != nil {
+               t.Error("unexpected error", err)
+       }
+       if g := w.Written(); g != 1 {
+               t.Errorf("w.Written() = %d want 1", g)
+       }
+       if len(tw) != 2 {
+               t.Errorf("len(tw) = %d want 2", len(tw))
+       }
+       for i := 0; i < 10; i++ {
+               _, err = w.Write([]byte{1})
+               if err != errX {
+                       t.Errorf("err = %v want %v", err, errX)
+               }
+               if g := w.Written(); g != 2 {
+                       t.Errorf("w.Written() = %d want 2", g)
+               }
+               if len(tw) != 1 {
+                       t.Errorf("len(tw) = %d want 1", len(tw))
+               }
+       }
+       if got := w.Err(); got != errX {
+               t.Errorf("w.Err() = %v want %v", got, errX)
+       }
+}
+
+// testWriter returns its errors in order.
+// elements of a testWriter may be nil.
+// if its len is 0, it returns io.EOF.
+type testWriter []error
+
+func (tw *testWriter) Write(p []byte) (int, error) {
+       if len(*tw) == 0 {
+               return len(p), io.EOF
+       }
+       err := (*tw)[0]
+       *tw = (*tw)[1:]
+       return len(p), err
+}

diff --git a/vendor/github.com/bytom/math/checked/checked.go b/vendor/github.com/bytom/math/checked/checked.go
new file mode 100644 (file)
index 0000000..8280d81
--- /dev/null
+++ b/vendor/github.com/bytom/math/checked/checked.go
@@ -0,0 +1,268 @@
+/*
+Package checked implements basic arithmetic operations
+with underflow and overflow checks.
+*/
+package checked
+
+import (
+       "errors"
+       "math"
+)
+
+var ErrOverflow = errors.New("arithmetic overflow")
+
+// AddInt64 returns a + b
+// with an integer overflow check.
+func AddInt64(a, b int64) (sum int64, ok bool) {
+       if (b > 0 && a > math.MaxInt64-b) ||
+               (b < 0 && a < math.MinInt64-b) {
+               return 0, false
+       }
+       return a + b, true
+}
+
+// SubInt64 returns a - b
+// with an integer overflow check.
+func SubInt64(a, b int64) (diff int64, ok bool) {
+       if (b > 0 && a < math.MinInt64+b) ||
+               (b < 0 && a > math.MaxInt64+b) {
+               return 0, false
+       }
+       return a - b, true
+}
+
+// MulInt64 returns a * b
+// with an integer overflow check.
+func MulInt64(a, b int64) (product int64, ok bool) {
+       if (a > 0 && b > 0 && a > math.MaxInt64/b) ||
+               (a > 0 && b <= 0 && b < math.MinInt64/a) ||
+               (a <= 0 && b > 0 && a < math.MinInt64/b) ||
+               (a < 0 && b <= 0 && b < math.MaxInt64/a) {
+               return 0, false
+       }
+       return a * b, true
+}
+
+// DivInt64 returns a / b
+// with an integer overflow check.
+func DivInt64(a, b int64) (quotient int64, ok bool) {
+       if b == 0 || (a == math.MinInt64 && b == -1) {
+               return 0, false
+       }
+       return a / b, true
+}
+
+// ModInt64 returns a % b
+// with an integer overflow check.
+func ModInt64(a, b int64) (remainder int64, ok bool) {
+       if b == 0 || (a == math.MinInt64 && b == -1) {
+               return 0, false
+       }
+       return a % b, true
+}
+
+// NegateInt64 returns -a
+// with an integer overflow check.
+func NegateInt64(a int64) (negated int64, ok bool) {
+       if a == math.MinInt64 {
+               return 0, false
+       }
+       return -a, true
+}
+
+// LshiftInt64 returns a << b
+// with an integer overflow check.
+func LshiftInt64(a, b int64) (result int64, ok bool) {
+       if b < 0 || b >= 64 {
+               return 0, false
+       }
+       if (a >= 0 && a > math.MaxInt64>>uint(b)) || (a < 0 && a < math.MinInt64>>uint(b)) {
+               return 0, false
+       }
+       return a << uint(b), true
+}
+
+// AddInt32 returns a + b
+// with an integer overflow check.
+func AddInt32(a, b int32) (sum int32, ok bool) {
+       if (b > 0 && a > math.MaxInt32-b) ||
+               (b < 0 && a < math.MinInt32-b) {
+               return 0, false
+       }
+       return a + b, true
+}
+
+// SubInt32 returns a - b
+// with an integer overflow check.
+func SubInt32(a, b int32) (diff int32, ok bool) {
+       if (b > 0 && a < math.MinInt32+b) ||
+               (b < 0 && a > math.MaxInt32+b) {
+               return 0, false
+       }
+       return a - b, true
+}
+
+// MulInt32 returns a * b
+// with an integer overflow check.
+func MulInt32(a, b int32) (product int32, ok bool) {
+       if (a > 0 && b > 0 && a > math.MaxInt32/b) ||
+               (a > 0 && b <= 0 && b < math.MinInt32/a) ||
+               (a <= 0 && b > 0 && a < math.MinInt32/b) ||
+               (a < 0 && b <= 0 && b < math.MaxInt32/a) {
+               return 0, false
+       }
+       return a * b, true
+}
+
+// DivInt32 returns a / b
+// with an integer overflow check.
+func DivInt32(a, b int32) (quotient int32, ok bool) {
+       if b == 0 || (a == math.MinInt32 && b == -1) {
+               return 0, false
+       }
+       return a / b, true
+}
+
+// ModInt32 returns a % b
+// with an integer overflow check.
+func ModInt32(a, b int32) (remainder int32, ok bool) {
+       if b == 0 || (a == math.MinInt32 && b == -1) {
+               return 0, false
+       }
+       return a % b, true
+}
+
+// NegateInt32 returns -a
+// with an integer overflow check.
+func NegateInt32(a int32) (negated int32, ok bool) {
+       if a == math.MinInt32 {
+               return 0, false
+       }
+       return -a, true
+}
+
+// LshiftInt32 returns a << b
+// with an integer overflow check.
+func LshiftInt32(a, b int32) (result int32, ok bool) {
+       if b < 0 || b >= 32 {
+               return 0, false
+       }
+       if (a >= 0 && a > math.MaxInt32>>uint(b)) || (a < 0 && a < math.MinInt32>>uint(b)) {
+               return 0, false
+       }
+       return a << uint(b), true
+}
+
+// AddUint64 returns a + b
+// with an integer overflow check.
+func AddUint64(a, b uint64) (sum uint64, ok bool) {
+       if math.MaxUint64-a < b {
+               return 0, false
+       }
+       return a + b, true
+}
+
+// SubUint64 returns a - b
+// with an integer overflow check.
+func SubUint64(a, b uint64) (diff uint64, ok bool) {
+       if a < b {
+               return 0, false
+       }
+       return a - b, true
+}
+
+// MulUint64 returns a * b
+// with an integer overflow check.
+func MulUint64(a, b uint64) (product uint64, ok bool) {
+       if b > 0 && a > math.MaxUint64/b {
+               return 0, false
+       }
+       return a * b, true
+}
+
+// DivUint64 returns a / b
+// with an integer overflow check.
+func DivUint64(a, b uint64) (quotient uint64, ok bool) {
+       if b == 0 {
+               return 0, false
+       }
+       return a / b, true
+}
+
+// ModUint64 returns a % b
+// with an integer overflow check.
+func ModUint64(a, b uint64) (remainder uint64, ok bool) {
+       if b == 0 {
+               return 0, false
+       }
+       return a % b, true
+}
+
+// LshiftUint64 returns a << b
+// with an integer overflow check.
+func LshiftUint64(a, b uint64) (result uint64, ok bool) {
+       if b >= 64 {
+               return 0, false
+       }
+       if a > math.MaxUint64>>uint(b) {
+               return 0, false
+       }
+       return a << uint(b), true
+}
+
+// AddUint32 returns a + b
+// with an integer overflow check.
+func AddUint32(a, b uint32) (sum uint32, ok bool) {
+       if math.MaxUint32-a < b {
+               return 0, false
+       }
+       return a + b, true
+}
+
+// SubUint32 returns a - b
+// with an integer overflow check.
+func SubUint32(a, b uint32) (diff uint32, ok bool) {
+       if a < b {
+               return 0, false
+       }
+       return a - b, true
+}
+
+// MulUint32 returns a * b
+// with an integer overflow check.
+func MulUint32(a, b uint32) (product uint32, ok bool) {
+       if b > 0 && a > math.MaxUint32/b {
+               return 0, false
+       }
+       return a * b, true
+}
+
+// DivUint32 returns a / b
+// with an integer overflow check.
+func DivUint32(a, b uint32) (quotient uint32, ok bool) {
+       if b == 0 {
+               return 0, false
+       }
+       return a / b, true
+}
+
+// ModUint32 returns a % b
+// with an integer overflow check.
+func ModUint32(a, b uint32) (remainder uint32, ok bool) {
+       if b == 0 {
+               return 0, false
+       }
+       return a % b, true
+}
+
+// LshiftUint32 returns a << b
+// with an integer overflow check.
+func LshiftUint32(a, b uint32) (result uint32, ok bool) {
+       if b >= 32 {
+               return 0, false
+       }
+       if a > math.MaxUint32>>uint(b) {
+               return 0, false
+       }
+       return a << uint(b), true
+}

diff --git a/vendor/github.com/bytom/math/checked/checked_test.go b/vendor/github.com/bytom/math/checked/checked_test.go
new file mode 100644 (file)
index 0000000..d9babb4
--- /dev/null
+++ b/vendor/github.com/bytom/math/checked/checked_test.go
@@ -0,0 +1,232 @@
+package checked
+
+import (
+       "math"
+       "reflect"
+       "runtime"
+       "strings"
+       "testing"
+)
+
+func TestInt64(t *testing.T) {
+       cases := []struct {
+               f          func(a, b int64) (int64, bool)
+               a, b, want int64
+               wantOk     bool
+       }{
+               {AddInt64, 2, 3, 5, true},
+               {AddInt64, 2, -3, -1, true},
+               {AddInt64, -2, -3, -5, true},
+               {AddInt64, math.MaxInt64, 1, 0, false},
+               {AddInt64, math.MinInt64, math.MinInt64, 0, false},
+               {AddInt64, math.MinInt64, -1, 0, false},
+               {SubInt64, 3, 2, 1, true},
+               {SubInt64, 2, 3, -1, true},
+               {SubInt64, -2, -3, 1, true},
+               {SubInt64, math.MinInt64, 1, 0, false},
+               {SubInt64, -2, math.MaxInt64, 0, false},
+               {MulInt64, 2, 3, 6, true},
+               {MulInt64, -2, -3, 6, true},
+               {MulInt64, -2, 3, -6, true},
+               {MulInt64, math.MaxInt64, -1, math.MinInt64 + 1, true},
+               {MulInt64, math.MinInt64, 2, 0, false},
+               {MulInt64, math.MaxInt64, 2, 0, false},
+               {MulInt64, 2, math.MinInt64, 0, false},
+               {MulInt64, -2, math.MinInt64, 0, false},
+               {DivInt64, 2, 2, 1, true},
+               {DivInt64, -2, -2, 1, true},
+               {DivInt64, -2, 2, -1, true},
+               {DivInt64, 1, 0, 0, false},
+               {DivInt64, math.MinInt64, -1, 0, false},
+               {ModInt64, 3, 2, 1, true},
+               {ModInt64, -3, -2, -1, true},
+               {ModInt64, -3, 2, -1, true},
+               {ModInt64, 1, 0, 0, false},
+               {ModInt64, math.MinInt64, -1, 0, false},
+               {LshiftInt64, 1, 2, 4, true},
+               {LshiftInt64, -1, 2, -4, true},
+               {LshiftInt64, 1, 64, 0, false},
+               {LshiftInt64, 2, 63, 0, false},
+       }
+
+       for _, c := range cases {
+               got, gotOk := c.f(c.a, c.b)
+
+               if got != c.want {
+                       t.Errorf("%s(%d, %d) = %d want %d", fname(c.f), c.a, c.b, got, c.want)
+               }
+
+               if gotOk != c.wantOk {
+                       t.Errorf("%s(%d, %d) ok = %v want %v", fname(c.f), c.a, c.b, gotOk, c.wantOk)
+               }
+       }
+
+       negateCases := []struct {
+               a, want int64
+               wantOk  bool
+       }{
+               {1, -1, true},
+               {-1, 1, true},
+               {0, 0, true},
+               {math.MinInt64, 0, false},
+       }
+       for _, c := range negateCases {
+               got, gotOk := NegateInt64(c.a)
+
+               if got != c.want {
+                       t.Errorf("NegateInt64(%d) = %d want %d", c.a, got, c.want)
+               }
+
+               if gotOk != c.wantOk {
+                       t.Errorf("NegateInt64(%d) ok = %v want %v", c.a, gotOk, c.wantOk)
+               }
+       }
+}
+
+func TestUint64(t *testing.T) {
+       cases := []struct {
+               f          func(a, b uint64) (uint64, bool)
+               a, b, want uint64
+               wantOk     bool
+       }{
+               {AddUint64, 2, 3, 5, true},
+               {AddUint64, math.MaxUint64, 1, 0, false},
+               {SubUint64, 3, 2, 1, true},
+               {SubUint64, 2, 3, 0, false},
+               {MulUint64, 2, 3, 6, true},
+               {MulUint64, math.MaxUint64, 2, 0, false},
+               {DivUint64, 2, 2, 1, true},
+               {DivUint64, 1, 0, 0, false},
+               {ModUint64, 3, 2, 1, true},
+               {ModUint64, 1, 0, 0, false},
+               {LshiftUint64, 1, 2, 4, true},
+               {LshiftUint64, 1, 64, 0, false},
+               {LshiftUint64, 2, 63, 0, false},
+       }
+
+       for _, c := range cases {
+               got, gotOk := c.f(c.a, c.b)
+
+               if got != c.want {
+                       t.Errorf("%s(%d, %d) = %d want %d", fname(c.f), c.a, c.b, got, c.want)
+               }
+
+               if gotOk != c.wantOk {
+                       t.Errorf("%s(%d, %d) ok = %v want %v", fname(c.f), c.a, c.b, gotOk, c.wantOk)
+               }
+       }
+}
+
+func TestInt32(t *testing.T) {
+       cases := []struct {
+               f          func(a, b int32) (int32, bool)
+               a, b, want int32
+               wantOk     bool
+       }{
+               {AddInt32, 2, 3, 5, true},
+               {AddInt32, 2, -3, -1, true},
+               {AddInt32, -2, -3, -5, true},
+               {AddInt32, math.MaxInt32, 1, 0, false},
+               {AddInt32, math.MinInt32, math.MinInt32, 0, false},
+               {AddInt32, math.MinInt32, -1, 0, false},
+               {SubInt32, 3, 2, 1, true},
+               {SubInt32, 2, 3, -1, true},
+               {SubInt32, -2, -3, 1, true},
+               {SubInt32, math.MinInt32, 1, 0, false},
+               {SubInt32, -2, math.MaxInt32, 0, false},
+               {MulInt32, 2, 3, 6, true},
+               {MulInt32, -2, -3, 6, true},
+               {MulInt32, -2, 3, -6, true},
+               {MulInt32, math.MaxInt32, -1, math.MinInt32 + 1, true},
+               {MulInt32, math.MinInt32, 2, 0, false},
+               {MulInt32, math.MaxInt32, 2, 0, false},
+               {MulInt32, 2, math.MinInt32, 0, false},
+               {MulInt32, -2, math.MinInt32, 0, false},
+               {DivInt32, 2, 2, 1, true},
+               {DivInt32, -2, -2, 1, true},
+               {DivInt32, -2, 2, -1, true},
+               {DivInt32, 1, 0, 0, false},
+               {DivInt32, math.MinInt32, -1, 0, false},
+               {ModInt32, 3, 2, 1, true},
+               {ModInt32, -3, -2, -1, true},
+               {ModInt32, -3, 2, -1, true},
+               {ModInt32, 1, 0, 0, false},
+               {ModInt32, math.MinInt32, -1, 0, false},
+               {LshiftInt32, 1, 2, 4, true},
+               {LshiftInt32, -1, 2, -4, true},
+               {LshiftInt32, 1, 32, 0, false},
+               {LshiftInt32, 2, 31, 0, false},
+       }
+
+       for _, c := range cases {
+               got, gotOk := c.f(c.a, c.b)
+
+               if got != c.want {
+                       t.Errorf("%s(%d, %d) = %d want %d", fname(c.f), c.a, c.b, got, c.want)
+               }
+
+               if gotOk != c.wantOk {
+                       t.Errorf("%s(%d, %d) ok = %v want %v", fname(c.f), c.a, c.b, gotOk, c.wantOk)
+               }
+       }
+
+       negateCases := []struct {
+               a, want int32
+               wantOk  bool
+       }{
+               {1, -1, true},
+               {-1, 1, true},
+               {0, 0, true},
+               {math.MinInt32, 0, false},
+       }
+       for _, c := range negateCases {
+               got, gotOk := NegateInt32(c.a)
+
+               if got != c.want {
+                       t.Errorf("NegateInt32(%d) = %d want %d", c.a, got, c.want)
+               }
+
+               if gotOk != c.wantOk {
+                       t.Errorf("NegateInt32(%d) ok = %v want %v", c.a, gotOk, c.wantOk)
+               }
+       }
+}
+
+func TestUint32(t *testing.T) {
+       cases := []struct {
+               f          func(a, b uint32) (uint32, bool)
+               a, b, want uint32
+               wantOk     bool
+       }{
+               {AddUint32, 2, 3, 5, true},
+               {AddUint32, math.MaxUint32, 1, 0, false},
+               {SubUint32, 3, 2, 1, true},
+               {SubUint32, 2, 3, 0, false},
+               {MulUint32, 2, 3, 6, true},
+               {MulUint32, math.MaxUint32, 2, 0, false},
+               {DivUint32, 2, 2, 1, true},
+               {DivUint32, 1, 0, 0, false},
+               {ModUint32, 3, 2, 1, true},
+               {ModUint32, 1, 0, 0, false},
+               {LshiftUint32, 1, 2, 4, true},
+               {LshiftUint32, 1, 32, 0, false},
+               {LshiftUint32, 2, 31, 0, false},
+       }
+
+       for _, c := range cases {
+               got, gotOk := c.f(c.a, c.b)
+
+               if got != c.want {
+                       t.Errorf("%s(%d, %d) = %d want %d", fname(c.f), c.a, c.b, got, c.want)
+               }
+
+               if gotOk != c.wantOk {
+                       t.Errorf("%s(%d, %d) ok = %v want %v", fname(c.f), c.a, c.b, gotOk, c.wantOk)
+               }
+       }
+}
+
+func fname(f interface{}) string {
+       name := runtime.FuncForPC(reflect.ValueOf(f).Pointer()).Name()
+       return name[strings.IndexRune(name, '.')+1:]
+}

diff --git a/vendor/github.com/bytom/protocol/bc/asset.go b/vendor/github.com/bytom/protocol/bc/asset.go
new file mode 100644 (file)
index 0000000..880df75
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/asset.go
@@ -0,0 +1,98 @@
+package bc
+
+import (
+       "encoding/binary"
+       "errors"
+       "io"
+
+       "github.com/bytom/crypto/sha3pool"
+       "github.com/bytom/encoding/blockchain"
+)
+
+// NewAssetID convert byte array to aseet id
+func NewAssetID(b [32]byte) (a AssetID) {
+       return AssetID{
+               V0: binary.BigEndian.Uint64(b[0:8]),
+               V1: binary.BigEndian.Uint64(b[8:16]),
+               V2: binary.BigEndian.Uint64(b[16:24]),
+               V3: binary.BigEndian.Uint64(b[24:32]),
+       }
+}
+
+// Byte32 return the byte array representation
+func (a AssetID) Byte32() (b32 [32]byte) { return Hash(a).Byte32() }
+
+// MarshalText satisfies the TextMarshaler interface.
+func (a AssetID) MarshalText() ([]byte, error) { return Hash(a).MarshalText() }
+
+// UnmarshalText satisfies the TextUnmarshaler interface.
+func (a *AssetID) UnmarshalText(b []byte) error { return (*Hash)(a).UnmarshalText(b) }
+
+// UnmarshalJSON satisfies the json.Unmarshaler interface.
+func (a *AssetID) UnmarshalJSON(b []byte) error { return (*Hash)(a).UnmarshalJSON(b) }
+
+// Bytes returns the byte representation.
+func (a AssetID) Bytes() []byte { return Hash(a).Bytes() }
+
+// WriteTo satisfies the io.WriterTo interface.
+func (a AssetID) WriteTo(w io.Writer) (int64, error) { return Hash(a).WriteTo(w) }
+
+// ReadFrom satisfies the io.ReaderFrom interface.
+func (a *AssetID) ReadFrom(r io.Reader) (int64, error) { return (*Hash)(a).ReadFrom(r) }
+
+// IsZero tells whether a Asset pointer is nil or points to an all-zero hash.
+func (a *AssetID) IsZero() bool { return (*Hash)(a).IsZero() }
+
+// ComputeAssetID calculate the asset id from AssetDefinition
+func (ad *AssetDefinition) ComputeAssetID() (assetID AssetID) {
+       h := sha3pool.Get256()
+       defer sha3pool.Put256(h)
+       writeForHash(h, *ad) // error is impossible
+       var b [32]byte
+       h.Read(b[:]) // error is impossible
+       return NewAssetID(b)
+}
+
+// ComputeAssetID implement the assetID calculate logic
+func ComputeAssetID(prog []byte, vmVersion uint64, data *Hash) AssetID {
+       def := &AssetDefinition{
+               IssuanceProgram: &Program{
+                       VmVersion: vmVersion,
+                       Code:      prog,
+               },
+               Data: data,
+       }
+       return def.ComputeAssetID()
+}
+
+// ReadFrom read the AssetAmount from the bytes
+func (a *AssetAmount) ReadFrom(r *blockchain.Reader) (err error) {
+       var assetID AssetID
+       if _, err = assetID.ReadFrom(r); err != nil {
+               return err
+       }
+       a.AssetId = &assetID
+       a.Amount, err = blockchain.ReadVarint63(r)
+       return err
+}
+
+// WriteTo convert struct to byte and write to io
+func (a AssetAmount) WriteTo(w io.Writer) (int64, error) {
+       n, err := a.AssetId.WriteTo(w)
+       if err != nil {
+               return n, err
+       }
+       n2, err := blockchain.WriteVarint63(w, a.Amount)
+       return n + int64(n2), err
+}
+
+// Equal check does two AssetAmount have same assetID and amount
+func (a *AssetAmount) Equal(other *AssetAmount) (eq bool, err error) {
+       if a == nil || other == nil {
+               return false, errors.New("empty asset amount")
+       }
+       if a.AssetId == nil || other.AssetId == nil {
+               return false, errors.New("empty asset id")
+       }
+       return a.Amount == other.Amount && *a.AssetId == *other.AssetId, nil
+}

diff --git a/vendor/github.com/bytom/protocol/bc/asset_test.go b/vendor/github.com/bytom/protocol/bc/asset_test.go
new file mode 100644 (file)
index 0000000..422e1a3
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/asset_test.go
@@ -0,0 +1,77 @@
+package bc
+
+import (
+       "testing"
+       "encoding/hex"
+
+       "golang.org/x/crypto/sha3"
+)
+
+func TestComputeAssetID(t *testing.T) {
+       issuanceScript := []byte{1}
+       assetID := ComputeAssetID(issuanceScript, 1, &EmptyStringHash)
+
+       unhashed := append([]byte{})
+       unhashed = append(unhashed, []byte{0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}...) // vmVersion
+       unhashed = append(unhashed, 0x01)                                                      // length of issuanceScript
+       unhashed = append(unhashed, issuanceScript...)
+       unhashed = append(unhashed, EmptyStringHash.Bytes()...)
+
+       if want := NewAssetID(sha3.Sum256(unhashed)); assetID != want {
+               t.Errorf("asset id = %x want %x", assetID.Bytes(), want.Bytes())
+       }
+}
+
+func TestComputeAssetIDReally(t *testing.T) {
+       cases := []struct {
+               program       string
+               rawDefinition string
+               wantAssetID   string
+       }{
+               {
+                       program: "ae2039294f652632eee970765550c245f0b0314256b4b93aadc86279fdb45db3b70e5151ad",
+                       rawDefinition: "7b0a202022646563696d616c73223a20382c0a2020226465736372697074696f6e223a207b7d2c0a2020226e616d65223a2022222c0a20202273796d626f6c223a2022220a7d",
+                       wantAssetID: "07c7ced3f37f48ea39da6971c89f90e9cff3202d54b0a911f12ace8501f3834e",
+               },
+               {
+                       program: "ae20620b1755451738b04f42822f4b37186563f824c9c30d485987298918f96395fe5151ad",
+                       rawDefinition: "7b0a202022646563696d616c73223a20382c0a2020226465736372697074696f6e223a207b7d2c0a2020226e616d65223a2022222c0a20202273796d6f626f6c223a2022220a7d",
+                       wantAssetID: "0dafd0f0e42f06f3bf9a8cf5787519d3860650f27a2b3393d34e1fe06e89b469",
+               },
+               {
+                       program: "ae20db11f9dfa39c9e66421c530fe027218edd3d5b1cd98f24c826f4d9c0cd131a475151ad",
+                       rawDefinition: "7b0a202022646563696d616c73223a20382c0a2020226465736372697074696f6e223a207b7d2c0a2020226e616d65223a2022222c0a20202273796d626f6c223a2022220a7d",
+                       wantAssetID: "a5bc30d8d0ad051e6e352ebc21d79ba798cd8c436e89f4149969c2c562371791",
+               },
+       }
+
+       for _, c := range cases {
+               progBytes, err := hex.DecodeString(c.program)
+               if err != nil {
+                       t.Fatal(err)
+               }
+
+               defBytes, err := hex.DecodeString(c.rawDefinition)
+               if err != nil {
+                       t.Fatal(err)
+               }
+
+               defHash := NewHash(sha3.Sum256(defBytes))
+               assetID := ComputeAssetID(progBytes, 1, &defHash)
+               if assetID.String() != c.wantAssetID {
+                       t.Errorf("got asset id:%s, want asset id:%s", assetID.String(), c.wantAssetID)
+               }
+       }
+}
+
+var assetIDSink AssetID
+
+func BenchmarkComputeAssetID(b *testing.B) {
+       var (
+               issuanceScript = []byte{5}
+       )
+
+       for i := 0; i < b.N; i++ {
+               assetIDSink = ComputeAssetID(issuanceScript, 1, &EmptyStringHash)
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/bc.pb.go b/vendor/github.com/bytom/protocol/bc/bc.pb.go
new file mode 100644 (file)
index 0000000..da95f80
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/bc.pb.go
@@ -0,0 +1,725 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: bc.proto
+
+/*
+Package bc is a generated protocol buffer package.
+
+It is generated from these files:
+       bc.proto
+
+It has these top-level messages:
+       Hash
+       Program
+       AssetID
+       AssetAmount
+       AssetDefinition
+       ValueSource
+       ValueDestination
+       BlockHeader
+       TxHeader
+       TxVerifyResult
+       TransactionStatus
+       Mux
+       Coinbase
+       Output
+       Retirement
+       Issuance
+       Spend
+*/
+package bc
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type Hash struct {
+       V0 uint64 `protobuf:"fixed64,1,opt,name=v0" json:"v0,omitempty"`
+       V1 uint64 `protobuf:"fixed64,2,opt,name=v1" json:"v1,omitempty"`
+       V2 uint64 `protobuf:"fixed64,3,opt,name=v2" json:"v2,omitempty"`
+       V3 uint64 `protobuf:"fixed64,4,opt,name=v3" json:"v3,omitempty"`
+}
+
+func (m *Hash) Reset()                    { *m = Hash{} }
+func (m *Hash) String() string            { return proto.CompactTextString(m) }
+func (*Hash) ProtoMessage()               {}
+func (*Hash) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+func (m *Hash) GetV0() uint64 {
+       if m != nil {
+               return m.V0
+       }
+       return 0
+}
+
+func (m *Hash) GetV1() uint64 {
+       if m != nil {
+               return m.V1
+       }
+       return 0
+}
+
+func (m *Hash) GetV2() uint64 {
+       if m != nil {
+               return m.V2
+       }
+       return 0
+}
+
+func (m *Hash) GetV3() uint64 {
+       if m != nil {
+               return m.V3
+       }
+       return 0
+}
+
+type Program struct {
+       VmVersion uint64 `protobuf:"varint,1,opt,name=vm_version,json=vmVersion" json:"vm_version,omitempty"`
+       Code      []byte `protobuf:"bytes,2,opt,name=code,proto3" json:"code,omitempty"`
+}
+
+func (m *Program) Reset()                    { *m = Program{} }
+func (m *Program) String() string            { return proto.CompactTextString(m) }
+func (*Program) ProtoMessage()               {}
+func (*Program) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+func (m *Program) GetVmVersion() uint64 {
+       if m != nil {
+               return m.VmVersion
+       }
+       return 0
+}
+
+func (m *Program) GetCode() []byte {
+       if m != nil {
+               return m.Code
+       }
+       return nil
+}
+
+// This message type duplicates Hash, above. One alternative is to
+// embed a Hash inside an AssetID. But it's useful for AssetID to be
+// plain old data (without pointers). Another alternative is use Hash
+// in any protobuf types where an AssetID is called for, but it's
+// preferable to have type safety.
+type AssetID struct {
+       V0 uint64 `protobuf:"fixed64,1,opt,name=v0" json:"v0,omitempty"`
+       V1 uint64 `protobuf:"fixed64,2,opt,name=v1" json:"v1,omitempty"`
+       V2 uint64 `protobuf:"fixed64,3,opt,name=v2" json:"v2,omitempty"`
+       V3 uint64 `protobuf:"fixed64,4,opt,name=v3" json:"v3,omitempty"`
+}
+
+func (m *AssetID) Reset()                    { *m = AssetID{} }
+func (m *AssetID) String() string            { return proto.CompactTextString(m) }
+func (*AssetID) ProtoMessage()               {}
+func (*AssetID) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+
+func (m *AssetID) GetV0() uint64 {
+       if m != nil {
+               return m.V0
+       }
+       return 0
+}
+
+func (m *AssetID) GetV1() uint64 {
+       if m != nil {
+               return m.V1
+       }
+       return 0
+}
+
+func (m *AssetID) GetV2() uint64 {
+       if m != nil {
+               return m.V2
+       }
+       return 0
+}
+
+func (m *AssetID) GetV3() uint64 {
+       if m != nil {
+               return m.V3
+       }
+       return 0
+}
+
+type AssetAmount struct {
+       AssetId *AssetID `protobuf:"bytes,1,opt,name=asset_id,json=assetId" json:"asset_id,omitempty"`
+       Amount  uint64   `protobuf:"varint,2,opt,name=amount" json:"amount,omitempty"`
+}
+
+func (m *AssetAmount) Reset()                    { *m = AssetAmount{} }
+func (m *AssetAmount) String() string            { return proto.CompactTextString(m) }
+func (*AssetAmount) ProtoMessage()               {}
+func (*AssetAmount) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+
+func (m *AssetAmount) GetAssetId() *AssetID {
+       if m != nil {
+               return m.AssetId
+       }
+       return nil
+}
+
+func (m *AssetAmount) GetAmount() uint64 {
+       if m != nil {
+               return m.Amount
+       }
+       return 0
+}
+
+type AssetDefinition struct {
+       IssuanceProgram *Program `protobuf:"bytes,1,opt,name=issuance_program,json=issuanceProgram" json:"issuance_program,omitempty"`
+       Data            *Hash    `protobuf:"bytes,2,opt,name=data" json:"data,omitempty"`
+}
+
+func (m *AssetDefinition) Reset()                    { *m = AssetDefinition{} }
+func (m *AssetDefinition) String() string            { return proto.CompactTextString(m) }
+func (*AssetDefinition) ProtoMessage()               {}
+func (*AssetDefinition) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
+
+func (m *AssetDefinition) GetIssuanceProgram() *Program {
+       if m != nil {
+               return m.IssuanceProgram
+       }
+       return nil
+}
+
+func (m *AssetDefinition) GetData() *Hash {
+       if m != nil {
+               return m.Data
+       }
+       return nil
+}
+
+type ValueSource struct {
+       Ref      *Hash        `protobuf:"bytes,1,opt,name=ref" json:"ref,omitempty"`
+       Value    *AssetAmount `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"`
+       Position uint64       `protobuf:"varint,3,opt,name=position" json:"position,omitempty"`
+}
+
+func (m *ValueSource) Reset()                    { *m = ValueSource{} }
+func (m *ValueSource) String() string            { return proto.CompactTextString(m) }
+func (*ValueSource) ProtoMessage()               {}
+func (*ValueSource) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
+
+func (m *ValueSource) GetRef() *Hash {
+       if m != nil {
+               return m.Ref
+       }
+       return nil
+}
+
+func (m *ValueSource) GetValue() *AssetAmount {
+       if m != nil {
+               return m.Value
+       }
+       return nil
+}
+
+func (m *ValueSource) GetPosition() uint64 {
+       if m != nil {
+               return m.Position
+       }
+       return 0
+}
+
+type ValueDestination struct {
+       Ref      *Hash        `protobuf:"bytes,1,opt,name=ref" json:"ref,omitempty"`
+       Value    *AssetAmount `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"`
+       Position uint64       `protobuf:"varint,3,opt,name=position" json:"position,omitempty"`
+}
+
+func (m *ValueDestination) Reset()                    { *m = ValueDestination{} }
+func (m *ValueDestination) String() string            { return proto.CompactTextString(m) }
+func (*ValueDestination) ProtoMessage()               {}
+func (*ValueDestination) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
+
+func (m *ValueDestination) GetRef() *Hash {
+       if m != nil {
+               return m.Ref
+       }
+       return nil
+}
+
+func (m *ValueDestination) GetValue() *AssetAmount {
+       if m != nil {
+               return m.Value
+       }
+       return nil
+}
+
+func (m *ValueDestination) GetPosition() uint64 {
+       if m != nil {
+               return m.Position
+       }
+       return 0
+}
+
+type BlockHeader struct {
+       Version               uint64             `protobuf:"varint,1,opt,name=version" json:"version,omitempty"`
+       Height                uint64             `protobuf:"varint,2,opt,name=height" json:"height,omitempty"`
+       PreviousBlockId       *Hash              `protobuf:"bytes,3,opt,name=previous_block_id,json=previousBlockId" json:"previous_block_id,omitempty"`
+       Timestamp             uint64             `protobuf:"varint,4,opt,name=timestamp" json:"timestamp,omitempty"`
+       TransactionsRoot      *Hash              `protobuf:"bytes,5,opt,name=transactions_root,json=transactionsRoot" json:"transactions_root,omitempty"`
+       TransactionStatusHash *Hash              `protobuf:"bytes,6,opt,name=transaction_status_hash,json=transactionStatusHash" json:"transaction_status_hash,omitempty"`
+       Nonce                 uint64             `protobuf:"varint,7,opt,name=nonce" json:"nonce,omitempty"`
+       Bits                  uint64             `protobuf:"varint,8,opt,name=bits" json:"bits,omitempty"`
+       TransactionStatus     *TransactionStatus `protobuf:"bytes,9,opt,name=transaction_status,json=transactionStatus" json:"transaction_status,omitempty"`
+}
+
+func (m *BlockHeader) Reset()                    { *m = BlockHeader{} }
+func (m *BlockHeader) String() string            { return proto.CompactTextString(m) }
+func (*BlockHeader) ProtoMessage()               {}
+func (*BlockHeader) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
+
+func (m *BlockHeader) GetVersion() uint64 {
+       if m != nil {
+               return m.Version
+       }
+       return 0
+}
+
+func (m *BlockHeader) GetHeight() uint64 {
+       if m != nil {
+               return m.Height
+       }
+       return 0
+}
+
+func (m *BlockHeader) GetPreviousBlockId() *Hash {
+       if m != nil {
+               return m.PreviousBlockId
+       }
+       return nil
+}
+
+func (m *BlockHeader) GetTimestamp() uint64 {
+       if m != nil {
+               return m.Timestamp
+       }
+       return 0
+}
+
+func (m *BlockHeader) GetTransactionsRoot() *Hash {
+       if m != nil {
+               return m.TransactionsRoot
+       }
+       return nil
+}
+
+func (m *BlockHeader) GetTransactionStatusHash() *Hash {
+       if m != nil {
+               return m.TransactionStatusHash
+       }
+       return nil
+}
+
+func (m *BlockHeader) GetNonce() uint64 {
+       if m != nil {
+               return m.Nonce
+       }
+       return 0
+}
+
+func (m *BlockHeader) GetBits() uint64 {
+       if m != nil {
+               return m.Bits
+       }
+       return 0
+}
+
+func (m *BlockHeader) GetTransactionStatus() *TransactionStatus {
+       if m != nil {
+               return m.TransactionStatus
+       }
+       return nil
+}
+
+type TxHeader struct {
+       Version        uint64  `protobuf:"varint,1,opt,name=version" json:"version,omitempty"`
+       SerializedSize uint64  `protobuf:"varint,2,opt,name=serialized_size,json=serializedSize" json:"serialized_size,omitempty"`
+       TimeRange      uint64  `protobuf:"varint,3,opt,name=time_range,json=timeRange" json:"time_range,omitempty"`
+       ResultIds      []*Hash `protobuf:"bytes,4,rep,name=result_ids,json=resultIds" json:"result_ids,omitempty"`
+}
+
+func (m *TxHeader) Reset()                    { *m = TxHeader{} }
+func (m *TxHeader) String() string            { return proto.CompactTextString(m) }
+func (*TxHeader) ProtoMessage()               {}
+func (*TxHeader) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
+
+func (m *TxHeader) GetVersion() uint64 {
+       if m != nil {
+               return m.Version
+       }
+       return 0
+}
+
+func (m *TxHeader) GetSerializedSize() uint64 {
+       if m != nil {
+               return m.SerializedSize
+       }
+       return 0
+}
+
+func (m *TxHeader) GetTimeRange() uint64 {
+       if m != nil {
+               return m.TimeRange
+       }
+       return 0
+}
+
+func (m *TxHeader) GetResultIds() []*Hash {
+       if m != nil {
+               return m.ResultIds
+       }
+       return nil
+}
+
+type TxVerifyResult struct {
+       StatusFail bool `protobuf:"varint,1,opt,name=status_fail,json=statusFail" json:"status_fail,omitempty"`
+}
+
+func (m *TxVerifyResult) Reset()                    { *m = TxVerifyResult{} }
+func (m *TxVerifyResult) String() string            { return proto.CompactTextString(m) }
+func (*TxVerifyResult) ProtoMessage()               {}
+func (*TxVerifyResult) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{9} }
+
+func (m *TxVerifyResult) GetStatusFail() bool {
+       if m != nil {
+               return m.StatusFail
+       }
+       return false
+}
+
+type TransactionStatus struct {
+       Version      uint64            `protobuf:"varint,1,opt,name=version" json:"version,omitempty"`
+       VerifyStatus []*TxVerifyResult `protobuf:"bytes,2,rep,name=verify_status,json=verifyStatus" json:"verify_status,omitempty"`
+}
+
+func (m *TransactionStatus) Reset()                    { *m = TransactionStatus{} }
+func (m *TransactionStatus) String() string            { return proto.CompactTextString(m) }
+func (*TransactionStatus) ProtoMessage()               {}
+func (*TransactionStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{10} }
+
+func (m *TransactionStatus) GetVersion() uint64 {
+       if m != nil {
+               return m.Version
+       }
+       return 0
+}
+
+func (m *TransactionStatus) GetVerifyStatus() []*TxVerifyResult {
+       if m != nil {
+               return m.VerifyStatus
+       }
+       return nil
+}
+
+type Mux struct {
+       Sources             []*ValueSource      `protobuf:"bytes,1,rep,name=sources" json:"sources,omitempty"`
+       Program             *Program            `protobuf:"bytes,2,opt,name=program" json:"program,omitempty"`
+       WitnessDestinations []*ValueDestination `protobuf:"bytes,3,rep,name=witness_destinations,json=witnessDestinations" json:"witness_destinations,omitempty"`
+       WitnessArguments    [][]byte            `protobuf:"bytes,4,rep,name=witness_arguments,json=witnessArguments,proto3" json:"witness_arguments,omitempty"`
+}
+
+func (m *Mux) Reset()                    { *m = Mux{} }
+func (m *Mux) String() string            { return proto.CompactTextString(m) }
+func (*Mux) ProtoMessage()               {}
+func (*Mux) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{11} }
+
+func (m *Mux) GetSources() []*ValueSource {
+       if m != nil {
+               return m.Sources
+       }
+       return nil
+}
+
+func (m *Mux) GetProgram() *Program {
+       if m != nil {
+               return m.Program
+       }
+       return nil
+}
+
+func (m *Mux) GetWitnessDestinations() []*ValueDestination {
+       if m != nil {
+               return m.WitnessDestinations
+       }
+       return nil
+}
+
+func (m *Mux) GetWitnessArguments() [][]byte {
+       if m != nil {
+               return m.WitnessArguments
+       }
+       return nil
+}
+
+type Coinbase struct {
+       WitnessDestination *ValueDestination `protobuf:"bytes,1,opt,name=witness_destination,json=witnessDestination" json:"witness_destination,omitempty"`
+       Arbitrary          []byte            `protobuf:"bytes,2,opt,name=arbitrary,proto3" json:"arbitrary,omitempty"`
+}
+
+func (m *Coinbase) Reset()                    { *m = Coinbase{} }
+func (m *Coinbase) String() string            { return proto.CompactTextString(m) }
+func (*Coinbase) ProtoMessage()               {}
+func (*Coinbase) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{12} }
+
+func (m *Coinbase) GetWitnessDestination() *ValueDestination {
+       if m != nil {
+               return m.WitnessDestination
+       }
+       return nil
+}
+
+func (m *Coinbase) GetArbitrary() []byte {
+       if m != nil {
+               return m.Arbitrary
+       }
+       return nil
+}
+
+type Output struct {
+       Source         *ValueSource `protobuf:"bytes,1,opt,name=source" json:"source,omitempty"`
+       ControlProgram *Program     `protobuf:"bytes,2,opt,name=control_program,json=controlProgram" json:"control_program,omitempty"`
+       Ordinal        uint64       `protobuf:"varint,3,opt,name=ordinal" json:"ordinal,omitempty"`
+}
+
+func (m *Output) Reset()                    { *m = Output{} }
+func (m *Output) String() string            { return proto.CompactTextString(m) }
+func (*Output) ProtoMessage()               {}
+func (*Output) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{13} }
+
+func (m *Output) GetSource() *ValueSource {
+       if m != nil {
+               return m.Source
+       }
+       return nil
+}
+
+func (m *Output) GetControlProgram() *Program {
+       if m != nil {
+               return m.ControlProgram
+       }
+       return nil
+}
+
+func (m *Output) GetOrdinal() uint64 {
+       if m != nil {
+               return m.Ordinal
+       }
+       return 0
+}
+
+type Retirement struct {
+       Source  *ValueSource `protobuf:"bytes,1,opt,name=source" json:"source,omitempty"`
+       Ordinal uint64       `protobuf:"varint,2,opt,name=ordinal" json:"ordinal,omitempty"`
+}
+
+func (m *Retirement) Reset()                    { *m = Retirement{} }
+func (m *Retirement) String() string            { return proto.CompactTextString(m) }
+func (*Retirement) ProtoMessage()               {}
+func (*Retirement) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{14} }
+
+func (m *Retirement) GetSource() *ValueSource {
+       if m != nil {
+               return m.Source
+       }
+       return nil
+}
+
+func (m *Retirement) GetOrdinal() uint64 {
+       if m != nil {
+               return m.Ordinal
+       }
+       return 0
+}
+
+type Issuance struct {
+       NonceHash              *Hash             `protobuf:"bytes,1,opt,name=nonce_hash,json=nonceHash" json:"nonce_hash,omitempty"`
+       Value                  *AssetAmount      `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"`
+       WitnessDestination     *ValueDestination `protobuf:"bytes,3,opt,name=witness_destination,json=witnessDestination" json:"witness_destination,omitempty"`
+       WitnessAssetDefinition *AssetDefinition  `protobuf:"bytes,4,opt,name=witness_asset_definition,json=witnessAssetDefinition" json:"witness_asset_definition,omitempty"`
+       WitnessArguments       [][]byte          `protobuf:"bytes,5,rep,name=witness_arguments,json=witnessArguments,proto3" json:"witness_arguments,omitempty"`
+       Ordinal                uint64            `protobuf:"varint,6,opt,name=ordinal" json:"ordinal,omitempty"`
+}
+
+func (m *Issuance) Reset()                    { *m = Issuance{} }
+func (m *Issuance) String() string            { return proto.CompactTextString(m) }
+func (*Issuance) ProtoMessage()               {}
+func (*Issuance) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{15} }
+
+func (m *Issuance) GetNonceHash() *Hash {
+       if m != nil {
+               return m.NonceHash
+       }
+       return nil
+}
+
+func (m *Issuance) GetValue() *AssetAmount {
+       if m != nil {
+               return m.Value
+       }
+       return nil
+}
+
+func (m *Issuance) GetWitnessDestination() *ValueDestination {
+       if m != nil {
+               return m.WitnessDestination
+       }
+       return nil
+}
+
+func (m *Issuance) GetWitnessAssetDefinition() *AssetDefinition {
+       if m != nil {
+               return m.WitnessAssetDefinition
+       }
+       return nil
+}
+
+func (m *Issuance) GetWitnessArguments() [][]byte {
+       if m != nil {
+               return m.WitnessArguments
+       }
+       return nil
+}
+
+func (m *Issuance) GetOrdinal() uint64 {
+       if m != nil {
+               return m.Ordinal
+       }
+       return 0
+}
+
+type Spend struct {
+       SpentOutputId      *Hash             `protobuf:"bytes,1,opt,name=spent_output_id,json=spentOutputId" json:"spent_output_id,omitempty"`
+       WitnessDestination *ValueDestination `protobuf:"bytes,2,opt,name=witness_destination,json=witnessDestination" json:"witness_destination,omitempty"`
+       WitnessArguments   [][]byte          `protobuf:"bytes,3,rep,name=witness_arguments,json=witnessArguments,proto3" json:"witness_arguments,omitempty"`
+       Ordinal            uint64            `protobuf:"varint,4,opt,name=ordinal" json:"ordinal,omitempty"`
+}
+
+func (m *Spend) Reset()                    { *m = Spend{} }
+func (m *Spend) String() string            { return proto.CompactTextString(m) }
+func (*Spend) ProtoMessage()               {}
+func (*Spend) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{16} }
+
+func (m *Spend) GetSpentOutputId() *Hash {
+       if m != nil {
+               return m.SpentOutputId
+       }
+       return nil
+}
+
+func (m *Spend) GetWitnessDestination() *ValueDestination {
+       if m != nil {
+               return m.WitnessDestination
+       }
+       return nil
+}
+
+func (m *Spend) GetWitnessArguments() [][]byte {
+       if m != nil {
+               return m.WitnessArguments
+       }
+       return nil
+}
+
+func (m *Spend) GetOrdinal() uint64 {
+       if m != nil {
+               return m.Ordinal
+       }
+       return 0
+}
+
+func init() {
+       proto.RegisterType((*Hash)(nil), "bc.Hash")
+       proto.RegisterType((*Program)(nil), "bc.Program")
+       proto.RegisterType((*AssetID)(nil), "bc.AssetID")
+       proto.RegisterType((*AssetAmount)(nil), "bc.AssetAmount")
+       proto.RegisterType((*AssetDefinition)(nil), "bc.AssetDefinition")
+       proto.RegisterType((*ValueSource)(nil), "bc.ValueSource")
+       proto.RegisterType((*ValueDestination)(nil), "bc.ValueDestination")
+       proto.RegisterType((*BlockHeader)(nil), "bc.BlockHeader")
+       proto.RegisterType((*TxHeader)(nil), "bc.TxHeader")
+       proto.RegisterType((*TxVerifyResult)(nil), "bc.TxVerifyResult")
+       proto.RegisterType((*TransactionStatus)(nil), "bc.TransactionStatus")
+       proto.RegisterType((*Mux)(nil), "bc.Mux")
+       proto.RegisterType((*Coinbase)(nil), "bc.Coinbase")
+       proto.RegisterType((*Output)(nil), "bc.Output")
+       proto.RegisterType((*Retirement)(nil), "bc.Retirement")
+       proto.RegisterType((*Issuance)(nil), "bc.Issuance")
+       proto.RegisterType((*Spend)(nil), "bc.Spend")
+}
+
+func init() { proto.RegisterFile("bc.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+       // 913 bytes of a gzipped FileDescriptorProto
+       0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xb4, 0x56, 0x4b, 0x6f, 0x23, 0x45,
+       0x10, 0x96, 0xc7, 0xe3, 0x57, 0x39, 0x1b, 0xc7, 0x9d, 0xec, 0x32, 0x5a, 0x2d, 0x62, 0x35, 0xd2,
+       0x12, 0x10, 0x52, 0x94, 0x38, 0x0b, 0x5c, 0x38, 0x10, 0x08, 0xcb, 0xfa, 0x10, 0x2d, 0xea, 0x44,
+       0xb9, 0x8e, 0xda, 0x33, 0x6d, 0xbb, 0xc5, 0x78, 0xda, 0x74, 0xf7, 0x98, 0x6c, 0x6e, 0xfc, 0x08,
+       0x7e, 0x0b, 0x3f, 0x81, 0x13, 0xff, 0x88, 0x03, 0xea, 0x9a, 0x1e, 0x7b, 0xfc, 0xd8, 0x97, 0xd0,
+       0xde, 0x5c, 0x8f, 0xf9, 0xaa, 0xea, 0xab, 0x47, 0x1b, 0xda, 0xa3, 0xf8, 0x64, 0xae, 0xa4, 0x91,
+       0xc4, 0x1b, 0xc5, 0xe1, 0x0b, 0xf0, 0x5f, 0x32, 0x3d, 0x25, 0xfb, 0xe0, 0x2d, 0x4e, 0x83, 0xda,
+       0xd3, 0xda, 0x17, 0x4d, 0xea, 0x2d, 0x4e, 0x51, 0x3e, 0x0b, 0x3c, 0x27, 0x9f, 0xa1, 0x3c, 0x08,
+       0xea, 0x4e, 0x1e, 0xa0, 0x7c, 0x1e, 0xf8, 0x4e, 0x3e, 0x0f, 0xbf, 0x83, 0xd6, 0x2f, 0x4a, 0x4e,
+       0x14, 0x9b, 0x91, 0x4f, 0x01, 0x16, 0xb3, 0x68, 0xc1, 0x95, 0x16, 0x32, 0x43, 0x48, 0x9f, 0x76,
+       0x16, 0xb3, 0xdb, 0x42, 0x41, 0x08, 0xf8, 0xb1, 0x4c, 0x38, 0x62, 0xef, 0x51, 0xfc, 0x1d, 0x0e,
+       0xa1, 0x75, 0xa1, 0x35, 0x37, 0xc3, 0xcb, 0xff, 0x9d, 0xc8, 0x15, 0x74, 0x11, 0xea, 0x62, 0x26,
+       0xf3, 0xcc, 0x90, 0xcf, 0xa1, 0xcd, 0xac, 0x18, 0x89, 0x04, 0x41, 0xbb, 0x83, 0xee, 0xc9, 0x28,
+       0x3e, 0x71, 0xd1, 0x68, 0x0b, 0x8d, 0xc3, 0x84, 0x3c, 0x82, 0x26, 0xc3, 0x2f, 0x30, 0x94, 0x4f,
+       0x9d, 0x14, 0x4e, 0xa0, 0x87, 0xbe, 0x97, 0x7c, 0x2c, 0x32, 0x61, 0x6c, 0x01, 0xdf, 0xc0, 0x81,
+       0xd0, 0x3a, 0x67, 0x59, 0xcc, 0xa3, 0x79, 0x51, 0x73, 0x15, 0xda, 0xd1, 0x40, 0x7b, 0xa5, 0x53,
+       0xc9, 0xcb, 0x13, 0xf0, 0x13, 0x66, 0x18, 0x06, 0xe8, 0x0e, 0xda, 0xd6, 0xd7, 0x52, 0x4f, 0x51,
+       0x1b, 0xa6, 0xd0, 0xbd, 0x65, 0x69, 0xce, 0xaf, 0x65, 0xae, 0x62, 0x4e, 0x1e, 0x43, 0x5d, 0xf1,
+       0xb1, 0xc3, 0x5d, 0xf9, 0x5a, 0x25, 0x79, 0x06, 0x8d, 0x85, 0x75, 0x75, 0x48, 0xbd, 0x65, 0x41,
+       0x45, 0xcd, 0xb4, 0xb0, 0x92, 0xc7, 0xd0, 0x9e, 0x4b, 0x8d, 0x39, 0x23, 0x5f, 0x3e, 0x5d, 0xca,
+       0xe1, 0x6f, 0x70, 0x80, 0xd1, 0x2e, 0xb9, 0x36, 0x22, 0x63, 0x58, 0xd7, 0x47, 0x0e, 0xf9, 0xaf,
+       0x07, 0xdd, 0x1f, 0x52, 0x19, 0xff, 0xfa, 0x92, 0xb3, 0x84, 0x2b, 0x12, 0x40, 0x6b, 0x7d, 0x46,
+       0x4a, 0xd1, 0xf6, 0x62, 0xca, 0xc5, 0x64, 0xba, 0xec, 0x45, 0x21, 0x91, 0xe7, 0xd0, 0x9f, 0x2b,
+       0xbe, 0x10, 0x32, 0xd7, 0xd1, 0xc8, 0x22, 0xd9, 0xa6, 0xd6, 0x37, 0xd2, 0xed, 0x95, 0x2e, 0x18,
+       0x6b, 0x98, 0x90, 0x27, 0xd0, 0x31, 0x62, 0xc6, 0xb5, 0x61, 0xb3, 0x39, 0xce, 0x89, 0x4f, 0x57,
+       0x0a, 0xf2, 0x35, 0xf4, 0x8d, 0x62, 0x99, 0x66, 0xb1, 0x4d, 0x52, 0x47, 0x4a, 0x4a, 0x13, 0x34,
+       0x36, 0x30, 0x0f, 0xaa, 0x2e, 0x54, 0x4a, 0x43, 0xbe, 0x87, 0x4f, 0x2a, 0xba, 0x48, 0x1b, 0x66,
+       0x72, 0x1d, 0x4d, 0x99, 0x9e, 0x06, 0xcd, 0x8d, 0x8f, 0x1f, 0x56, 0x1c, 0xaf, 0xd1, 0x0f, 0x17,
+       0xee, 0x08, 0x1a, 0x99, 0xcc, 0x62, 0x1e, 0xb4, 0x30, 0xa5, 0x42, 0xb0, 0xcb, 0x31, 0x12, 0x46,
+       0x07, 0x6d, 0x54, 0xe2, 0x6f, 0x72, 0x09, 0x64, 0x3b, 0x56, 0xd0, 0xc1, 0x30, 0x0f, 0x6d, 0x98,
+       0x9b, 0xcd, 0x00, 0xb4, 0xbf, 0x15, 0x33, 0xfc, 0xb3, 0x06, 0xed, 0x9b, 0xbb, 0x77, 0x72, 0x7f,
+       0x0c, 0x3d, 0xcd, 0x95, 0x60, 0xa9, 0xb8, 0xe7, 0x49, 0xa4, 0xc5, 0x3d, 0x77, 0x4d, 0xd8, 0x5f,
+       0xa9, 0xaf, 0xc5, 0x3d, 0xb7, 0x5b, 0x6e, 0x59, 0x8c, 0x14, 0xcb, 0x26, 0xdc, 0x35, 0x1b, 0x79,
+       0xa5, 0x56, 0x41, 0x8e, 0x01, 0x14, 0xd7, 0x79, 0x6a, 0x17, 0x4f, 0x07, 0xfe, 0xd3, 0xfa, 0x1a,
+       0x27, 0x9d, 0xc2, 0x36, 0x4c, 0x74, 0x78, 0x06, 0xfb, 0x37, 0x77, 0xb7, 0x5c, 0x89, 0xf1, 0x6b,
+       0x8a, 0x4a, 0xf2, 0x19, 0x74, 0x1d, 0x9f, 0x63, 0x26, 0x52, 0x4c, 0xb0, 0x4d, 0xa1, 0x50, 0xbd,
+       0x60, 0x22, 0x0d, 0xc7, 0xd0, 0xdf, 0x2a, 0xf9, 0x2d, 0x25, 0x7d, 0x0b, 0x0f, 0x16, 0x88, 0x5f,
+       0x52, 0xe7, 0x61, 0x36, 0x04, 0xa9, 0x5b, 0x0b, 0x4d, 0xf7, 0x0a, 0x47, 0x47, 0xd9, 0x3f, 0x35,
+       0xa8, 0x5f, 0xe5, 0x77, 0xe4, 0x4b, 0x68, 0x69, 0xdc, 0x4a, 0x1d, 0xd4, 0xf0, 0x53, 0x1c, 0xff,
+       0xca, 0xb6, 0xd2, 0xd2, 0x4e, 0x9e, 0x41, 0xab, 0x3c, 0x09, 0xde, 0xf6, 0x49, 0x28, 0x6d, 0xe4,
+       0x67, 0x38, 0xfa, 0x5d, 0x98, 0x8c, 0x6b, 0x1d, 0x25, 0xab, 0x0d, 0xd4, 0x41, 0x1d, 0xe1, 0x8f,
+       0x96, 0xf0, 0x95, 0xf5, 0xa4, 0x87, 0xee, 0x8b, 0x8a, 0x4e, 0x93, 0xaf, 0xa0, 0x5f, 0x02, 0x31,
+       0x35, 0xc9, 0x67, 0x3c, 0x33, 0x05, 0xdb, 0x7b, 0xf4, 0xc0, 0x19, 0x2e, 0x4a, 0x7d, 0x28, 0xa1,
+       0xfd, 0xa3, 0x14, 0xd9, 0x88, 0x69, 0x4e, 0x7e, 0x82, 0xc3, 0x1d, 0x19, 0xb8, 0xe5, 0xdf, 0x9d,
+       0x00, 0xd9, 0x4e, 0xc0, 0x2e, 0x17, 0x53, 0x23, 0x61, 0x14, 0x53, 0xaf, 0xdd, 0x45, 0x5f, 0x29,
+       0xc2, 0x3f, 0x6a, 0xd0, 0x7c, 0x95, 0x9b, 0x79, 0x6e, 0xc8, 0x31, 0x34, 0x0b, 0x8e, 0x5c, 0x88,
+       0x2d, 0x0a, 0x9d, 0x99, 0x3c, 0x87, 0x5e, 0x2c, 0x33, 0xa3, 0x64, 0x1a, 0xbd, 0x85, 0xc9, 0x7d,
+       0xe7, 0x53, 0xde, 0xd6, 0x00, 0x5a, 0x52, 0x25, 0x22, 0x63, 0xa9, 0x1b, 0xc5, 0x52, 0x0c, 0x5f,
+       0x01, 0x50, 0x6e, 0x84, 0xe2, 0x96, 0x83, 0xf7, 0x4f, 0xa3, 0x02, 0xe8, 0xad, 0x03, 0xfe, 0xe5,
+       0x41, 0x7b, 0xe8, 0x4e, 0xbb, 0x1d, 0x73, 0x5c, 0xdc, 0x62, 0xf5, 0x37, 0x4f, 0x67, 0x07, 0x6d,
+       0xb8, 0xee, 0xef, 0x79, 0x40, 0xdf, 0xd0, 0x96, 0xfa, 0x07, 0xb6, 0xe5, 0x0a, 0x82, 0xe5, 0x58,
+       0xe0, 0xeb, 0x97, 0x2c, 0x9f, 0x2f, 0x3c, 0x81, 0xdd, 0xc1, 0xe1, 0x32, 0x81, 0xd5, 0xcb, 0x46,
+       0x1f, 0x95, 0x23, 0xb3, 0xf1, 0xe2, 0xed, 0x9c, 0xb2, 0xc6, 0xee, 0x29, 0xab, 0x32, 0xd7, 0x5c,
+       0x67, 0xee, 0xef, 0x1a, 0x34, 0xae, 0xe7, 0x3c, 0x4b, 0xc8, 0x29, 0xf4, 0xf4, 0x9c, 0x67, 0x26,
+       0x92, 0x38, 0x1d, 0xab, 0xc7, 0x79, 0xc5, 0xdd, 0x03, 0x74, 0x28, 0xa6, 0x67, 0x98, 0xbc, 0x89,
+       0x18, 0xef, 0x03, 0x89, 0xd9, 0x59, 0x49, 0xfd, 0xdd, 0x95, 0xf8, 0x6b, 0x95, 0x8c, 0x9a, 0xf8,
+       0x07, 0xea, 0xfc, 0xbf, 0x00, 0x00, 0x00, 0xff, 0xff, 0x5a, 0x57, 0x4f, 0xd8, 0x4c, 0x09, 0x00,
+       0x00,
+}

diff --git a/vendor/github.com/bytom/protocol/bc/bc.proto b/vendor/github.com/bytom/protocol/bc/bc.proto
new file mode 100644 (file)
index 0000000..fb60c8f
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/bc.proto
@@ -0,0 +1,116 @@
+syntax = "proto3";
+
+package bc;
+
+message Hash {
+  fixed64 v0 = 1;
+  fixed64 v1 = 2;
+  fixed64 v2 = 3;
+  fixed64 v3 = 4;
+}
+
+message Program {
+  uint64 vm_version = 1;
+  bytes  code       = 2;
+}
+
+// This message type duplicates Hash, above. One alternative is to
+// embed a Hash inside an AssetID. But it's useful for AssetID to be
+// plain old data (without pointers). Another alternative is use Hash
+// in any protobuf types where an AssetID is called for, but it's
+// preferable to have type safety.
+message AssetID {
+  fixed64 v0 = 1;
+  fixed64 v1 = 2;
+  fixed64 v2 = 3;
+  fixed64 v3 = 4;
+}
+
+message AssetAmount {
+  AssetID asset_id = 1;
+  uint64  amount   = 2;
+}
+
+message AssetDefinition {
+  Program issuance_program = 1;
+  Hash    data             = 2;
+}
+
+message ValueSource {
+  Hash        ref      = 1;
+  AssetAmount value    = 2;
+  uint64      position = 3;
+}
+
+message ValueDestination {
+  Hash        ref      = 1;
+  AssetAmount value    = 2;
+  uint64      position = 3;
+}
+
+message BlockHeader {
+  uint64            version                 = 1;
+  uint64            height                  = 2;
+  Hash              previous_block_id       = 3;
+  uint64            timestamp               = 4;
+  Hash              transactions_root       = 5;
+  Hash              transaction_status_hash = 6;
+  uint64            nonce                   = 7;
+  uint64            bits                    = 8;
+  TransactionStatus transaction_status      = 9;
+}
+
+message TxHeader {
+  uint64        version         = 1;
+  uint64        serialized_size = 2;
+  uint64        time_range      = 3;
+  repeated Hash result_ids      = 4;
+}
+
+message TxVerifyResult {
+  bool status_fail = 1;
+}
+
+message TransactionStatus {
+  uint64                  version        = 1;
+  repeated TxVerifyResult verify_status  = 2;
+}
+
+message Mux {
+  repeated ValueSource      sources              = 1; // issuances, spends, and muxes
+  Program                   program              = 2;
+  repeated ValueDestination witness_destinations = 3; // outputs, retirements, and muxes
+  repeated bytes            witness_arguments    = 4;
+}
+
+message Coinbase {
+  ValueDestination witness_destination = 1;
+  bytes            arbitrary           = 2;
+}
+
+message Output {
+  ValueSource source          = 1;
+  Program     control_program = 2;
+  uint64      ordinal         = 3;
+}
+
+message Retirement {
+  ValueSource source   = 1;
+  uint64      ordinal  = 2;
+}
+
+message Issuance {
+  Hash             nonce_hash               = 1;
+  AssetAmount      value                    = 2;
+  ValueDestination witness_destination      = 3;
+  AssetDefinition  witness_asset_definition = 4;
+  repeated bytes   witness_arguments        = 5;
+  uint64           ordinal                  = 6;
+}
+
+message Spend {
+  Hash             spent_output_id     = 1;
+  ValueDestination witness_destination = 2;
+  repeated bytes   witness_arguments   = 3;
+  uint64           ordinal             = 4;
+}
\ No newline at end of file

diff --git a/vendor/github.com/bytom/protocol/bc/block.go b/vendor/github.com/bytom/protocol/bc/block.go
new file mode 100644 (file)
index 0000000..eda987d
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/block.go
@@ -0,0 +1,8 @@
+package bc
+
+// Block is block struct in bc level
+type Block struct {
+       *BlockHeader
+       ID           Hash
+       Transactions []*Tx
+}

diff --git a/vendor/github.com/bytom/protocol/bc/blockheader.go b/vendor/github.com/bytom/protocol/bc/blockheader.go
new file mode 100644 (file)
index 0000000..34c5ccf
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/blockheader.go
@@ -0,0 +1,34 @@
+package bc
+
+import "io"
+
+// BlockHeader contains the header information for a blockchain
+// block. It satisfies the Entry interface.
+
+func (BlockHeader) typ() string { return "blockheader" }
+func (bh *BlockHeader) writeForHash(w io.Writer) {
+       mustWriteForHash(w, bh.Version)
+       mustWriteForHash(w, bh.Height)
+       mustWriteForHash(w, bh.PreviousBlockId)
+       mustWriteForHash(w, bh.Timestamp)
+       mustWriteForHash(w, bh.TransactionsRoot)
+       mustWriteForHash(w, bh.TransactionStatusHash)
+       mustWriteForHash(w, bh.Bits)
+       mustWriteForHash(w, bh.Nonce)
+}
+
+// NewBlockHeader creates a new BlockHeader and populates
+// its body.
+func NewBlockHeader(version, height uint64, previousBlockID *Hash, timestamp uint64, transactionsRoot, transactionStatusHash *Hash, nonce, bits uint64) *BlockHeader {
+       return &BlockHeader{
+               Version:               version,
+               Height:                height,
+               PreviousBlockId:       previousBlockID,
+               Timestamp:             timestamp,
+               TransactionsRoot:      transactionsRoot,
+               TransactionStatusHash: transactionStatusHash,
+               TransactionStatus:     nil,
+               Bits:                  bits,
+               Nonce:                 nonce,
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/coinbase.go b/vendor/github.com/bytom/protocol/bc/coinbase.go
new file mode 100644 (file)
index 0000000..1125146
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/coinbase.go
@@ -0,0 +1,22 @@
+package bc
+
+import "io"
+
+func (Coinbase) typ() string { return "coinbase1" }
+func (c *Coinbase) writeForHash(w io.Writer) {
+       mustWriteForHash(w, c.Arbitrary)
+}
+
+// SetDestination is support function for map tx
+func (c *Coinbase) SetDestination(id *Hash, val *AssetAmount, pos uint64) {
+       c.WitnessDestination = &ValueDestination{
+               Ref:      id,
+               Value:    val,
+               Position: pos,
+       }
+}
+
+// NewCoinbase creates a new Coinbase.
+func NewCoinbase(arbitrary []byte) *Coinbase {
+       return &Coinbase{Arbitrary: arbitrary}
+}

diff --git a/vendor/github.com/bytom/protocol/bc/entry.go b/vendor/github.com/bytom/protocol/bc/entry.go
new file mode 100644 (file)
index 0000000..48c4662
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/entry.go
@@ -0,0 +1,165 @@
+package bc
+
+import (
+       "encoding/binary"
+       "fmt"
+       "io"
+       "reflect"
+
+       "github.com/golang/protobuf/proto"
+
+       "github.com/bytom/crypto/sha3pool"
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/errors"
+)
+
+// Entry is the interface implemented by each addressable unit in a
+// blockchain: transaction components such as spends, issuances,
+// outputs, and retirements (among others), plus blockheaders.
+type Entry interface {
+       proto.Message
+
+       // type produces a short human-readable string uniquely identifying
+       // the type of this entry.
+       typ() string
+
+       // writeForHash writes the entry's body for hashing.
+       writeForHash(w io.Writer)
+}
+
+var errInvalidValue = errors.New("invalid value")
+
+// EntryID computes the identifier of an entry, as the hash of its
+// body plus some metadata.
+func EntryID(e Entry) (hash Hash) {
+       if e == nil {
+               return hash
+       }
+
+       // Nil pointer; not the same as nil interface above. (See
+       // https://golang.org/doc/faq#nil_error.)
+       if v := reflect.ValueOf(e); v.Kind() == reflect.Ptr && v.IsNil() {
+               return hash
+       }
+
+       hasher := sha3pool.Get256()
+       defer sha3pool.Put256(hasher)
+
+       hasher.Write([]byte("entryid:"))
+       hasher.Write([]byte(e.typ()))
+       hasher.Write([]byte{':'})
+
+       bh := sha3pool.Get256()
+       defer sha3pool.Put256(bh)
+
+       e.writeForHash(bh)
+
+       var innerHash [32]byte
+       bh.Read(innerHash[:])
+
+       hasher.Write(innerHash[:])
+
+       hash.ReadFrom(hasher)
+       return hash
+}
+
+var byte32zero [32]byte
+
+// mustWriteForHash serializes the object c to the writer w, from which
+// presumably a hash can be extracted.
+//
+// This function may panic with an error from the underlying writer,
+// and may produce errors of its own if passed objects whose
+// hash-serialization formats are not specified. It MUST NOT produce
+// errors in other cases.
+func mustWriteForHash(w io.Writer, c interface{}) {
+       if err := writeForHash(w, c); err != nil {
+               panic(err)
+       }
+}
+
+func writeForHash(w io.Writer, c interface{}) error {
+       switch v := c.(type) {
+       case byte:
+               _, err := w.Write([]byte{v})
+               return errors.Wrap(err, "writing byte for hash")
+       case uint64:
+               buf := [8]byte{}
+               binary.LittleEndian.PutUint64(buf[:], v)
+               _, err := w.Write(buf[:])
+               return errors.Wrapf(err, "writing uint64 (%d) for hash", v)
+       case []byte:
+               _, err := blockchain.WriteVarstr31(w, v)
+               return errors.Wrapf(err, "writing []byte (len %d) for hash", len(v))
+       case [][]byte:
+               _, err := blockchain.WriteVarstrList(w, v)
+               return errors.Wrapf(err, "writing [][]byte (len %d) for hash", len(v))
+       case string:
+               _, err := blockchain.WriteVarstr31(w, []byte(v))
+               return errors.Wrapf(err, "writing string (len %d) for hash", len(v))
+       case *Hash:
+               if v == nil {
+                       _, err := w.Write(byte32zero[:])
+                       return errors.Wrap(err, "writing nil *Hash for hash")
+               }
+               _, err := w.Write(v.Bytes())
+               return errors.Wrap(err, "writing *Hash for hash")
+       case *AssetID:
+               if v == nil {
+                       _, err := w.Write(byte32zero[:])
+                       return errors.Wrap(err, "writing nil *AssetID for hash")
+               }
+               _, err := w.Write(v.Bytes())
+               return errors.Wrap(err, "writing *AssetID for hash")
+       case Hash:
+               _, err := v.WriteTo(w)
+               return errors.Wrap(err, "writing Hash for hash")
+       case AssetID:
+               _, err := v.WriteTo(w)
+               return errors.Wrap(err, "writing AssetID for hash")
+       }
+
+       // The two container types in the spec (List and Struct)
+       // correspond to slices and structs in Go. They can't be
+       // handled with type assertions, so we must use reflect.
+       switch v := reflect.ValueOf(c); v.Kind() {
+       case reflect.Ptr:
+               if v.IsNil() {
+                       return nil
+               }
+               elem := v.Elem()
+               return writeForHash(w, elem.Interface())
+       case reflect.Slice:
+               l := v.Len()
+               if _, err := blockchain.WriteVarint31(w, uint64(l)); err != nil {
+                       return errors.Wrapf(err, "writing slice (len %d) for hash", l)
+               }
+               for i := 0; i < l; i++ {
+                       c := v.Index(i)
+                       if !c.CanInterface() {
+                               return errInvalidValue
+                       }
+                       if err := writeForHash(w, c.Interface()); err != nil {
+                               return errors.Wrapf(err, "writing slice element %d for hash", i)
+                       }
+               }
+               return nil
+
+       case reflect.Struct:
+               typ := v.Type()
+               for i := 0; i < typ.NumField(); i++ {
+                       c := v.Field(i)
+                       if !c.CanInterface() {
+                               return errInvalidValue
+                       }
+                       if err := writeForHash(w, c.Interface()); err != nil {
+                               t := v.Type()
+                               f := t.Field(i)
+                               return errors.Wrapf(err, "writing struct field %d (%s.%s) for hash", i, t.Name(), f.Name)
+                       }
+               }
+               return nil
+       }
+
+       return errors.Wrap(fmt.Errorf("bad type %T", c))
+}

diff --git a/vendor/github.com/bytom/protocol/bc/entry_test.go b/vendor/github.com/bytom/protocol/bc/entry_test.go
new file mode 100644 (file)
index 0000000..707c978
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/entry_test.go
@@ -0,0 +1,91 @@
+package bc
+
+import (
+       "reflect"
+       "testing"
+)
+
+func BenchmarkEntryID(b *testing.B) {
+       m := NewMux([]*ValueSource{{Position: 1}}, &Program{Code: []byte{1}, VmVersion: 1})
+
+       entries := []Entry{
+               NewIssuance(nil, &AssetAmount{}, 0),
+               m,
+               NewTxHeader(1, 1, 0, nil),
+               NewOutput(&ValueSource{}, &Program{Code: []byte{1}, VmVersion: 1}, 0),
+               NewRetirement(&ValueSource{}, 1),
+               NewSpend(&Hash{}, 0),
+       }
+
+       for _, e := range entries {
+               name := reflect.TypeOf(e).Elem().Name()
+               b.Run(name, func(b *testing.B) {
+                       for i := 0; i < b.N; i++ {
+                               EntryID(e)
+                       }
+               })
+       }
+}
+
+func TestEntryID(t *testing.T) {
+       cases := []struct {
+               entry         Entry
+               expectEntryID string
+       }{
+               {
+                       entry:         NewIssuance(&Hash{V0: 0, V1: 1, V2: 2, V3: 3}, &AssetAmount{&AssetID{V0: 1, V1: 2, V2: 3, V3: 4}, 100}, 1),
+                       expectEntryID: "3012b9b6da3962bb2388cdf5db7f3b93a2b696fcc70e79bc5da1238a6d66ae73",
+               },
+               {
+                       entry: NewMux(
+                               []*ValueSource{
+                                       {
+                                               Ref:      &Hash{V0: 0, V1: 1, V2: 2, V3: 3},
+                                               Value:    &AssetAmount{&AssetID{V0: 1, V1: 2, V2: 3, V3: 4}, 100},
+                                               Position: 1,
+                                       },
+                               },
+                               &Program{VmVersion: 1, Code: []byte{1, 2, 3, 4}},
+                       ),
+                       expectEntryID: "16c4265a8a90916434c2a904a90132c198c7ebf8512aa1ba4485455b0beff388",
+               },
+               {
+                       entry: NewOutput(
+                               &ValueSource{
+                                       Ref:      &Hash{V0: 4, V1: 5, V2: 6, V3: 7},
+                                       Value:    &AssetAmount{&AssetID{V0: 1, V1: 1, V2: 1, V3: 1}, 10},
+                                       Position: 10,
+                               },
+                               &Program{VmVersion: 1, Code: []byte{5, 5, 5, 5}},
+                               1,
+                       ),
+                       expectEntryID: "1145c54cd79721c31c81ecfb7cae217f8ef1bea0016df51c1f5060bba43252cc",
+               },
+               {
+                       entry: NewRetirement(
+                               &ValueSource{
+                                       Ref:      &Hash{V0: 4, V1: 5, V2: 6, V3: 7},
+                                       Value:    &AssetAmount{&AssetID{V0: 1, V1: 1, V2: 1, V3: 1}, 10},
+                                       Position: 10,
+                               },
+                               1,
+                       ),
+                       expectEntryID: "538c367f7b6e1e9bf205ed0a29def84a1467c477b19812a6934e831c78c4da62",
+               },
+               {
+                       entry:         NewSpend(&Hash{V0: 0, V1: 1, V2: 2, V3: 3}, 1),
+                       expectEntryID: "2761dbb13967af8944620c134e0f336bbbb26f61eb4ecd154bc034ad6155b9e8",
+               },
+               {
+                       entry: NewTxHeader(1, 100, 1000, []*Hash{&Hash{V0: 4, V1: 5, V2: 6, V3: 7}}),
+                       expectEntryID: "ba592aa0841bd4649d9a04309e2e8497ac6f295a847cadd9de6b6f9c2d806663",
+               },
+       }
+
+       for _, c := range cases {
+               entryID := EntryID(c.entry)
+               if entryID.String() != c.expectEntryID {
+                       t.Errorf("the got extry id:%s is not equals to expect entry id:%s", entryID.String(), c.expectEntryID)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/hash.go b/vendor/github.com/bytom/protocol/bc/hash.go
new file mode 100644 (file)
index 0000000..a142030
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/hash.go
@@ -0,0 +1,103 @@
+package bc
+
+import (
+       "bytes"
+       "encoding/binary"
+       "encoding/hex"
+       "encoding/json"
+       "fmt"
+       "io"
+
+       "golang.org/x/crypto/sha3"
+)
+
+// EmptyStringHash represents a 256-bit hash.
+var EmptyStringHash = NewHash(sha3.Sum256(nil))
+
+// NewHash convert the input byte array to hash
+func NewHash(b32 [32]byte) (h Hash) {
+       h.V0 = binary.BigEndian.Uint64(b32[0:8])
+       h.V1 = binary.BigEndian.Uint64(b32[8:16])
+       h.V2 = binary.BigEndian.Uint64(b32[16:24])
+       h.V3 = binary.BigEndian.Uint64(b32[24:32])
+       return h
+}
+
+// Byte32 return the byte array representation
+func (h Hash) Byte32() (b32 [32]byte) {
+       binary.BigEndian.PutUint64(b32[0:8], h.V0)
+       binary.BigEndian.PutUint64(b32[8:16], h.V1)
+       binary.BigEndian.PutUint64(b32[16:24], h.V2)
+       binary.BigEndian.PutUint64(b32[24:32], h.V3)
+       return b32
+}
+
+// MarshalText satisfies the TextMarshaler interface.
+// It returns the bytes of h encoded in hex,
+// for formats that can't hold arbitrary binary data.
+// It never returns an error.
+func (h Hash) MarshalText() ([]byte, error) {
+       b := h.Byte32()
+       v := make([]byte, 64)
+       hex.Encode(v, b[:])
+       return v, nil
+}
+
+// UnmarshalText satisfies the TextUnmarshaler interface.
+// It decodes hex data from b into h.
+func (h *Hash) UnmarshalText(v []byte) error {
+       var b [32]byte
+       if len(v) != 64 {
+               return fmt.Errorf("bad length hash string %d", len(v))
+       }
+       _, err := hex.Decode(b[:], v)
+       *h = NewHash(b)
+       return err
+}
+
+// UnmarshalJSON satisfies the json.Unmarshaler interface.
+// If b is a JSON-encoded null, it copies the zero-value into h. Othwerwise, it
+// decodes hex data from b into h.
+func (h *Hash) UnmarshalJSON(b []byte) error {
+       if bytes.Equal(b, []byte("null")) {
+               *h = Hash{}
+               return nil
+       }
+       var s string
+       if err := json.Unmarshal(b, &s); err != nil {
+               return err
+       }
+       return h.UnmarshalText([]byte(s))
+}
+
+// Bytes returns the byte representation
+func (h Hash) Bytes() []byte {
+       b32 := h.Byte32()
+       return b32[:]
+}
+
+// WriteTo satisfies the io.WriterTo interface.
+func (h Hash) WriteTo(w io.Writer) (int64, error) {
+       n, err := w.Write(h.Bytes())
+       return int64(n), err
+}
+
+// ReadFrom satisfies the io.ReaderFrom interface.
+func (h *Hash) ReadFrom(r io.Reader) (int64, error) {
+       var b32 [32]byte
+       n, err := io.ReadFull(r, b32[:])
+       if err != nil {
+               return int64(n), err
+       }
+       *h = NewHash(b32)
+       return int64(n), nil
+}
+
+// IsZero tells whether a Hash pointer is nil or points to an all-zero
+// hash.
+func (h *Hash) IsZero() bool {
+       if h == nil {
+               return true
+       }
+       return *h == Hash{}
+}

diff --git a/vendor/github.com/bytom/protocol/bc/issuance.go b/vendor/github.com/bytom/protocol/bc/issuance.go
new file mode 100644 (file)
index 0000000..34811de
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/issuance.go
@@ -0,0 +1,30 @@
+package bc
+
+import "io"
+
+// Issuance is a source of new value on a blockchain. It satisfies the
+// Entry interface.
+
+func (Issuance) typ() string { return "issuance1" }
+func (iss *Issuance) writeForHash(w io.Writer) {
+       mustWriteForHash(w, iss.NonceHash)
+       mustWriteForHash(w, iss.Value)
+}
+
+// SetDestination will link the issuance to the output
+func (iss *Issuance) SetDestination(id *Hash, val *AssetAmount, pos uint64) {
+       iss.WitnessDestination = &ValueDestination{
+               Ref:      id,
+               Value:    val,
+               Position: pos,
+       }
+}
+
+// NewIssuance creates a new Issuance.
+func NewIssuance(nonceHash *Hash, value *AssetAmount, ordinal uint64) *Issuance {
+       return &Issuance{
+               NonceHash: nonceHash,
+               Value:     value,
+               Ordinal:   ordinal,
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/mux.go b/vendor/github.com/bytom/protocol/bc/mux.go
new file mode 100644 (file)
index 0000000..9a99820
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/mux.go
@@ -0,0 +1,21 @@
+package bc
+
+import "io"
+
+// Mux splits and combines value from one or more source entries,
+// making it available to one or more destination entries. It
+// satisfies the Entry interface.
+
+func (Mux) typ() string { return "mux1" }
+func (m *Mux) writeForHash(w io.Writer) {
+       mustWriteForHash(w, m.Sources)
+       mustWriteForHash(w, m.Program)
+}
+
+// NewMux creates a new Mux.
+func NewMux(sources []*ValueSource, program *Program) *Mux {
+       return &Mux{
+               Sources: sources,
+               Program: program,
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/output.go b/vendor/github.com/bytom/protocol/bc/output.go
new file mode 100644 (file)
index 0000000..3a29178
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/output.go
@@ -0,0 +1,24 @@
+package bc
+
+import "io"
+
+// Output is the result of a transfer of value. The value it contains
+// may be accessed by a later Spend entry (if that entry can satisfy
+// the Output's ControlProgram). Output satisfies the Entry interface.
+//
+// (Not to be confused with the deprecated type TxOutput.)
+
+func (Output) typ() string { return "output1" }
+func (o *Output) writeForHash(w io.Writer) {
+       mustWriteForHash(w, o.Source)
+       mustWriteForHash(w, o.ControlProgram)
+}
+
+// NewOutput creates a new Output.
+func NewOutput(source *ValueSource, controlProgram *Program, ordinal uint64) *Output {
+       return &Output{
+               Source:         source,
+               ControlProgram: controlProgram,
+               Ordinal:        ordinal,
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/retirement.go b/vendor/github.com/bytom/protocol/bc/retirement.go
new file mode 100644 (file)
index 0000000..de1e827
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/retirement.go
@@ -0,0 +1,20 @@
+package bc
+
+import "io"
+
+// Retirement is for the permanent removal of some value from a
+// blockchain. The value it contains can never be obtained by later
+// entries. Retirement satisfies the Entry interface.
+
+func (Retirement) typ() string { return "retirement1" }
+func (r *Retirement) writeForHash(w io.Writer) {
+       mustWriteForHash(w, r.Source)
+}
+
+// NewRetirement creates a new Retirement.
+func NewRetirement(source *ValueSource, ordinal uint64) *Retirement {
+       return &Retirement{
+               Source:  source,
+               Ordinal: ordinal,
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/spend.go b/vendor/github.com/bytom/protocol/bc/spend.go
new file mode 100644 (file)
index 0000000..729c49d
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/spend.go
@@ -0,0 +1,30 @@
+package bc
+
+import "io"
+
+// Spend accesses the value in a prior Output for transfer
+// elsewhere. It satisfies the Entry interface.
+//
+// (Not to be confused with the deprecated type SpendInput.)
+
+func (Spend) typ() string { return "spend1" }
+func (s *Spend) writeForHash(w io.Writer) {
+       mustWriteForHash(w, s.SpentOutputId)
+}
+
+// SetDestination will link the spend to the output
+func (s *Spend) SetDestination(id *Hash, val *AssetAmount, pos uint64) {
+       s.WitnessDestination = &ValueDestination{
+               Ref:      id,
+               Value:    val,
+               Position: pos,
+       }
+}
+
+// NewSpend creates a new Spend.
+func NewSpend(spentOutputID *Hash, ordinal uint64) *Spend {
+       return &Spend{
+               SpentOutputId: spentOutputID,
+               Ordinal:       ordinal,
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/tx.go b/vendor/github.com/bytom/protocol/bc/tx.go
new file mode 100644 (file)
index 0000000..c73ea3a
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/tx.go
@@ -0,0 +1,73 @@
+package bc
+
+import (
+       "github.com/bytom/crypto/sha3pool"
+       "github.com/bytom/errors"
+)
+
+// Tx is a wrapper for the entries-based representation of a transaction.
+type Tx struct {
+       *TxHeader
+       ID       Hash
+       Entries  map[Hash]Entry
+       InputIDs []Hash // 1:1 correspondence with TxData.Inputs
+
+       SpentOutputIDs []Hash
+       GasInputIDs    []Hash
+}
+
+// SigHash ...
+func (tx *Tx) SigHash(n uint32) (hash Hash) {
+       hasher := sha3pool.Get256()
+       defer sha3pool.Put256(hasher)
+
+       tx.InputIDs[n].WriteTo(hasher)
+       tx.ID.WriteTo(hasher)
+       hash.ReadFrom(hasher)
+       return hash
+}
+
+// Convenience routines for accessing entries of specific types by ID.
+var (
+       ErrEntryType    = errors.New("invalid entry type")
+       ErrMissingEntry = errors.New("missing entry")
+)
+
+// Output try to get the output entry by given hash
+func (tx *Tx) Output(id Hash) (*Output, error) {
+       e, ok := tx.Entries[id]
+       if !ok || e == nil {
+               return nil, errors.Wrapf(ErrMissingEntry, "id %x", id.Bytes())
+       }
+       o, ok := e.(*Output)
+       if !ok {
+               return nil, errors.Wrapf(ErrEntryType, "entry %x has unexpected type %T", id.Bytes(), e)
+       }
+       return o, nil
+}
+
+// Spend try to get the spend entry by given hash
+func (tx *Tx) Spend(id Hash) (*Spend, error) {
+       e, ok := tx.Entries[id]
+       if !ok || e == nil {
+               return nil, errors.Wrapf(ErrMissingEntry, "id %x", id.Bytes())
+       }
+       sp, ok := e.(*Spend)
+       if !ok {
+               return nil, errors.Wrapf(ErrEntryType, "entry %x has unexpected type %T", id.Bytes(), e)
+       }
+       return sp, nil
+}
+
+// Issuance try to get the issuance entry by given hash
+func (tx *Tx) Issuance(id Hash) (*Issuance, error) {
+       e, ok := tx.Entries[id]
+       if !ok || e == nil {
+               return nil, errors.Wrapf(ErrMissingEntry, "id %x", id.Bytes())
+       }
+       iss, ok := e.(*Issuance)
+       if !ok {
+               return nil, errors.Wrapf(ErrEntryType, "entry %x has unexpected type %T", id.Bytes(), e)
+       }
+       return iss, nil
+}

diff --git a/vendor/github.com/bytom/protocol/bc/tx_status.go b/vendor/github.com/bytom/protocol/bc/tx_status.go
new file mode 100644 (file)
index 0000000..2a0674c
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/tx_status.go
@@ -0,0 +1,51 @@
+package bc
+
+import (
+       "encoding/json"
+       "errors"
+       "io"
+)
+
+const transactionStatusVersion = 1
+
+// NewTransactionStatus create a empty TransactionStatus struct
+func NewTransactionStatus() *TransactionStatus {
+       return &TransactionStatus{
+               Version:      transactionStatusVersion,
+               VerifyStatus: []*TxVerifyResult{},
+       }
+}
+
+// SetStatus set the tx status of given index
+func (ts *TransactionStatus) SetStatus(i int, gasOnly bool) error {
+       if i > len(ts.VerifyStatus) {
+               return errors.New("setStatus should be set one by one")
+       }
+
+       if i == len(ts.VerifyStatus) {
+               ts.VerifyStatus = append(ts.VerifyStatus, &TxVerifyResult{StatusFail: gasOnly})
+       } else {
+               ts.VerifyStatus[i].StatusFail = gasOnly
+       }
+       return nil
+}
+
+// GetStatus get the tx status of given index
+func (ts *TransactionStatus) GetStatus(i int) (bool, error) {
+       if i >= len(ts.VerifyStatus) {
+               return false, errors.New("GetStatus is out of range")
+       }
+
+       return ts.VerifyStatus[i].StatusFail, nil
+}
+
+// WriteTo will write TxVerifyResult struct to io.Writer
+func (tvr *TxVerifyResult) WriteTo(w io.Writer) (int64, error) {
+       bytes, err := json.Marshal(tvr)
+       if err != nil {
+               return 0, err
+       }
+
+       n, err := w.Write(bytes)
+       return int64(n), err
+}

diff --git a/vendor/github.com/bytom/protocol/bc/tx_status_test.go b/vendor/github.com/bytom/protocol/bc/tx_status_test.go
new file mode 100644 (file)
index 0000000..6089d84
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/tx_status_test.go
@@ -0,0 +1,73 @@
+package bc
+
+import (
+       "testing"
+)
+
+func TestSetBits(t *testing.T) {
+       cases := []struct {
+               op     map[int]bool
+               result []bool
+       }{
+               {
+                       op: map[int]bool{
+                               0: true,
+                       },
+                       result: []bool{true},
+               },
+               {
+                       op: map[int]bool{
+                               0: false,
+                       },
+                       result: []bool{false},
+               },
+               {
+                       op: map[int]bool{
+                               0: false,
+                               1: true,
+                       },
+                       result: []bool{false, true},
+               },
+               {
+                       op: map[int]bool{
+                               0: true,
+                               1: false,
+                       },
+                       result: []bool{true, false},
+               },
+               {
+                       op: map[int]bool{
+                               0: true,
+                               1: false,
+                               2: false,
+                               3: true,
+                               4: true,
+                               5: true,
+                               6: false,
+                               7: true,
+                               8: false,
+                               9: true,
+                       },
+                       result: []bool{true, false, false, true, true, true, false, true, false, true},
+               },
+       }
+
+       for ci, c := range cases {
+               ts := NewTransactionStatus()
+               for i := 0; i < len(c.op); i++ {
+                       if err := ts.SetStatus(i, c.op[i]); err != nil {
+                               t.Errorf("test case #%d, %t", ci, err)
+                       }
+               }
+
+               for i, v := range c.result {
+                       result, err := ts.GetStatus(i)
+                       if err != nil {
+                               t.Errorf("test case #%d, %t", ci, err)
+                       }
+                       if result != v {
+                               t.Errorf("bad result, %d want %t get %t", i, v, result)
+                       }
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/tx_test.go b/vendor/github.com/bytom/protocol/bc/tx_test.go
new file mode 100644 (file)
index 0000000..b27c352
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/tx_test.go
@@ -0,0 +1,38 @@
+package bc
+
+import (
+       "testing"
+)
+
+func TestSigHash(t *testing.T) {
+       cases := []struct {
+               tx       *Tx
+               wantHash string
+       }{
+               {
+                       tx: &Tx{
+                               ID: Hash{V0: 13464118406972499748, V1: 5083224803004805715, V2: 16263625389659454272, V3: 9428032044180324575},
+                               InputIDs: []Hash{
+                                       {V0: 14760873410800997144, V1: 1698395500822741684, V2: 5965908492734661392, V3: 9445539829830863994},
+                               },
+                       },
+                       wantHash: "17dfad182df66212f6f694d774285e5989c5d9d1add6d5ce51a5930dbef360d8",
+               },
+               {
+                       tx: &Tx{
+                               ID: Hash{V0: 17091584763764411831, V1: 2315724244669489432, V2: 4322938623810388342, V3: 11167378497724951792},
+                               InputIDs: []Hash{
+                                       {V0: 6970879411704044573, V1: 10086395903308657573, V2: 10107608596190358115, V3: 8645856247221333302},
+                               },
+                       },
+                       wantHash: "f650ba3a58f90d3a2215f6c50a692a86c621b7968bb2a059a4c8e0c819770430",
+               },
+       }
+
+       for _, c := range cases {
+               gotHash := c.tx.SigHash(0)
+               if gotHash.String() != c.wantHash {
+                       t.Errorf("got hash:%s, want hash:%s", gotHash.String(), c.wantHash)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/txheader.go b/vendor/github.com/bytom/protocol/bc/txheader.go
new file mode 100644 (file)
index 0000000..ab24728
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/txheader.go
@@ -0,0 +1,25 @@
+package bc
+
+import "io"
+
+// TxHeader contains header information for a transaction. Every
+// transaction on a blockchain contains exactly one TxHeader. The ID
+// of the TxHeader is the ID of the transaction. TxHeader satisfies
+// the Entry interface.
+
+func (TxHeader) typ() string { return "txheader" }
+func (h *TxHeader) writeForHash(w io.Writer) {
+       mustWriteForHash(w, h.Version)
+       mustWriteForHash(w, h.TimeRange)
+       mustWriteForHash(w, h.ResultIds)
+}
+
+// NewTxHeader creates an new TxHeader.
+func NewTxHeader(version, serializedSize, timeRange uint64, resultIDs []*Hash) *TxHeader {
+       return &TxHeader{
+               Version:        version,
+               SerializedSize: serializedSize,
+               TimeRange:      timeRange,
+               ResultIds:      resultIDs,
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/block.go b/vendor/github.com/bytom/protocol/bc/types/block.go
new file mode 100644 (file)
index 0000000..ddda19a
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/block.go
@@ -0,0 +1,115 @@
+package types
+
+import (
+       "encoding/hex"
+       "fmt"
+       "io"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/encoding/bufpool"
+       "github.com/bytom/errors"
+)
+
+// serflag variables, start with 1
+const (
+       _ = iota
+       SerBlockHeader
+       SerBlockTransactions
+       SerBlockFull
+)
+
+// Block describes a complete block, including its header and the transactions
+// it contains.
+type Block struct {
+       BlockHeader
+       Transactions []*Tx
+}
+
+// MarshalText fulfills the json.Marshaler interface. This guarantees that
+// blocks will get deserialized correctly when being parsed from HTTP requests.
+func (b *Block) MarshalText() ([]byte, error) {
+       buf := bufpool.Get()
+       defer bufpool.Put(buf)
+
+       if _, err := b.WriteTo(buf); err != nil {
+               return nil, err
+       }
+
+       enc := make([]byte, hex.EncodedLen(buf.Len()))
+       hex.Encode(enc, buf.Bytes())
+       return enc, nil
+}
+
+// UnmarshalText fulfills the encoding.TextUnmarshaler interface.
+func (b *Block) UnmarshalText(text []byte) error {
+       decoded := make([]byte, hex.DecodedLen(len(text)))
+       if _, err := hex.Decode(decoded, text); err != nil {
+               return err
+       }
+
+       r := blockchain.NewReader(decoded)
+       if err := b.readFrom(r); err != nil {
+               return err
+       }
+
+       if trailing := r.Len(); trailing > 0 {
+               return fmt.Errorf("trailing garbage (%d bytes)", trailing)
+       }
+       return nil
+}
+
+func (b *Block) readFrom(r *blockchain.Reader) error {
+       serflags, err := b.BlockHeader.readFrom(r)
+       if err != nil {
+               return err
+       }
+
+       if serflags == SerBlockHeader {
+               return nil
+       }
+
+       n, err := blockchain.ReadVarint31(r)
+       if err != nil {
+               return errors.Wrap(err, "reading number of transactions")
+       }
+
+       for ; n > 0; n-- {
+               data := TxData{}
+               if err = data.readFrom(r); err != nil {
+                       return errors.Wrapf(err, "reading transaction %d", len(b.Transactions))
+               }
+
+               b.Transactions = append(b.Transactions, NewTx(data))
+       }
+       return nil
+}
+
+// WriteTo will write block to input io.Writer
+func (b *Block) WriteTo(w io.Writer) (int64, error) {
+       ew := errors.NewWriter(w)
+       if err := b.writeTo(ew, SerBlockFull); err != nil {
+               return 0, err
+       }
+       return ew.Written(), ew.Err()
+}
+
+func (b *Block) writeTo(w io.Writer, serflags uint8) error {
+       if err := b.BlockHeader.writeTo(w, serflags); err != nil {
+               return err
+       }
+
+       if serflags == SerBlockHeader {
+               return nil
+       }
+
+       if _, err := blockchain.WriteVarint31(w, uint64(len(b.Transactions))); err != nil {
+               return err
+       }
+
+       for _, tx := range b.Transactions {
+               if _, err := tx.WriteTo(w); err != nil {
+                       return err
+               }
+       }
+       return nil
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/block_commitment.go b/vendor/github.com/bytom/protocol/bc/types/block_commitment.go
new file mode 100644 (file)
index 0000000..ad4d822
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/block_commitment.go
@@ -0,0 +1,37 @@
+package types
+
+import (
+       "io"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/protocol/bc"
+)
+
+// BlockCommitment store the TransactionsMerkleRoot && TransactionStatusHash
+type BlockCommitment struct {
+       // TransactionsMerkleRoot is the root hash of the Merkle binary hash tree
+       // formed by the hashes of all transactions included in the block.
+       TransactionsMerkleRoot bc.Hash `json:"transaction_merkle_root"`
+
+       // TransactionStatusHash is the root hash of the Merkle binary hash tree
+       // formed by the hashes of all transaction verify results
+       TransactionStatusHash bc.Hash `json:"transaction_status_hash"`
+}
+
+func (bc *BlockCommitment) readFrom(r *blockchain.Reader) error {
+       if _, err := bc.TransactionsMerkleRoot.ReadFrom(r); err != nil {
+               return err
+       }
+
+       _, err := bc.TransactionStatusHash.ReadFrom(r)
+       return err
+}
+
+func (bc *BlockCommitment) writeTo(w io.Writer) error {
+       if _, err := bc.TransactionsMerkleRoot.WriteTo(w); err != nil {
+               return err
+       }
+
+       _, err := bc.TransactionStatusHash.WriteTo(w)
+       return err
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/block_commitment_test.go b/vendor/github.com/bytom/protocol/bc/types/block_commitment_test.go
new file mode 100644 (file)
index 0000000..97375de
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/block_commitment_test.go
@@ -0,0 +1,54 @@
+package types
+
+import (
+       "bytes"
+       "encoding/hex"
+       "testing"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/testutil"
+)
+
+func TestReadWriteBlockCommitment(t *testing.T) {
+       cases := []struct {
+               bc        BlockCommitment
+               hexString string
+       }{
+               {
+                       bc: BlockCommitment{
+                               TransactionsMerkleRoot: testutil.MustDecodeHash("35a2d11158f47a5c5267630b2b6cf9e9a5f79a598085a2572a68defeb8013ad2"),
+                               TransactionStatusHash:  testutil.MustDecodeHash("6978a65b4ee5b6f4914fe5c05000459a803ecf59132604e5d334d64249c5e50a"),
+                       },
+                       hexString: "35a2d11158f47a5c5267630b2b6cf9e9a5f79a598085a2572a68defeb8013ad26978a65b4ee5b6f4914fe5c05000459a803ecf59132604e5d334d64249c5e50a",
+               },
+               {
+                       bc: BlockCommitment{
+                               TransactionsMerkleRoot: testutil.MustDecodeHash("8ec3ee7589f95eee9b534f71fcd37142bcc839a0dbfe78124df9663827b90c35"),
+                               TransactionStatusHash:  testutil.MustDecodeHash("011bd3380852b2946df507e0c6234222c559eec8f545e4bc58a89e960892259b"),
+                       },
+                       hexString: "8ec3ee7589f95eee9b534f71fcd37142bcc839a0dbfe78124df9663827b90c35011bd3380852b2946df507e0c6234222c559eec8f545e4bc58a89e960892259b",
+               },
+       }
+
+       for _, c := range cases {
+               buff := []byte{}
+               buffer := bytes.NewBuffer(buff)
+               if err := c.bc.writeTo(buffer); err != nil {
+                       t.Fatal(err)
+               }
+
+               hexString := hex.EncodeToString(buffer.Bytes())
+               if hexString != c.hexString {
+                       t.Errorf("test write block commitment fail, got:%s, want:%s", hexString, c.hexString)
+               }
+
+               bc := &BlockCommitment{}
+               if err := bc.readFrom(blockchain.NewReader(buffer.Bytes())); err != nil {
+                       t.Fatal(err)
+               }
+
+               if !testutil.DeepEqual(*bc, c.bc) {
+                       t.Errorf("test read block commitment fail, got:%v, want:%v", *bc, c.bc)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/block_header.go b/vendor/github.com/bytom/protocol/bc/types/block_header.go
new file mode 100644 (file)
index 0000000..f15184b
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/block_header.go
@@ -0,0 +1,131 @@
+package types
+
+import (
+       "encoding/hex"
+       "fmt"
+       "io"
+       "time"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/encoding/bufpool"
+       "github.com/bytom/errors"
+       "github.com/bytom/protocol/bc"
+)
+
+// BlockHeader defines information about a block and is used in the Bytom
+type BlockHeader struct {
+       Version           uint64  // The version of the block.
+       Height            uint64  // The height of the block.
+       PreviousBlockHash bc.Hash // The hash of the previous block.
+       Timestamp         uint64  // The time of the block in seconds.
+       Nonce             uint64  // Nonce used to generate the block.
+       Bits              uint64  // Difficulty target for the block.
+       BlockCommitment
+}
+
+// Time returns the time represented by the Timestamp in block header.
+func (bh *BlockHeader) Time() time.Time {
+       return time.Unix(int64(bh.Timestamp), 0).UTC()
+}
+
+// Hash returns complete hash of the block header.
+func (bh *BlockHeader) Hash() bc.Hash {
+       h, _ := mapBlockHeader(bh)
+       return h
+}
+
+// MarshalText fulfills the json.Marshaler interface. This guarantees that
+// block headers will get deserialized correctly when being parsed from HTTP
+// requests.
+func (bh *BlockHeader) MarshalText() ([]byte, error) {
+       buf := bufpool.Get()
+       defer bufpool.Put(buf)
+
+       if _, err := bh.WriteTo(buf); err != nil {
+               return nil, err
+       }
+
+       enc := make([]byte, hex.EncodedLen(buf.Len()))
+       hex.Encode(enc, buf.Bytes())
+       return enc, nil
+}
+
+// UnmarshalText fulfills the encoding.TextUnmarshaler interface.
+func (bh *BlockHeader) UnmarshalText(text []byte) error {
+       decoded := make([]byte, hex.DecodedLen(len(text)))
+       if _, err := hex.Decode(decoded, text); err != nil {
+               return err
+       }
+
+       _, err := bh.readFrom(blockchain.NewReader(decoded))
+       return err
+}
+
+func (bh *BlockHeader) readFrom(r *blockchain.Reader) (serflag uint8, err error) {
+       var serflags [1]byte
+       io.ReadFull(r, serflags[:])
+       serflag = serflags[0]
+       switch serflag {
+       case SerBlockHeader, SerBlockFull:
+       default:
+               return 0, fmt.Errorf("unsupported serialization flags 0x%x", serflags)
+       }
+
+       if bh.Version, err = blockchain.ReadVarint63(r); err != nil {
+               return 0, err
+       }
+       if bh.Height, err = blockchain.ReadVarint63(r); err != nil {
+               return 0, err
+       }
+       if _, err = bh.PreviousBlockHash.ReadFrom(r); err != nil {
+               return 0, err
+       }
+       if bh.Timestamp, err = blockchain.ReadVarint63(r); err != nil {
+               return 0, err
+       }
+       if _, err = blockchain.ReadExtensibleString(r, bh.BlockCommitment.readFrom); err != nil {
+               return 0, err
+       }
+       if bh.Nonce, err = blockchain.ReadVarint63(r); err != nil {
+               return 0, err
+       }
+       if bh.Bits, err = blockchain.ReadVarint63(r); err != nil {
+               return 0, err
+       }
+       return
+}
+
+// WriteTo writes the block header to the input io.Writer
+func (bh *BlockHeader) WriteTo(w io.Writer) (int64, error) {
+       ew := errors.NewWriter(w)
+       if err := bh.writeTo(ew, SerBlockHeader); err != nil {
+               return 0, err
+       }
+       return ew.Written(), ew.Err()
+}
+
+func (bh *BlockHeader) writeTo(w io.Writer, serflags uint8) (err error) {
+       w.Write([]byte{serflags})
+       if _, err = blockchain.WriteVarint63(w, bh.Version); err != nil {
+               return err
+       }
+       if _, err = blockchain.WriteVarint63(w, bh.Height); err != nil {
+               return err
+       }
+       if _, err = bh.PreviousBlockHash.WriteTo(w); err != nil {
+               return err
+       }
+       if _, err = blockchain.WriteVarint63(w, bh.Timestamp); err != nil {
+               return err
+       }
+       if _, err = blockchain.WriteExtensibleString(w, nil, bh.BlockCommitment.writeTo); err != nil {
+               return err
+       }
+       if _, err = blockchain.WriteVarint63(w, bh.Nonce); err != nil {
+               return err
+       }
+       if _, err = blockchain.WriteVarint63(w, bh.Bits); err != nil {
+               return err
+       }
+       return nil
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/block_header_test.go b/vendor/github.com/bytom/protocol/bc/types/block_header_test.go
new file mode 100644 (file)
index 0000000..bda1a88
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/block_header_test.go
@@ -0,0 +1,377 @@
+package types
+
+import (
+       "bytes"
+       "encoding/hex"
+       "fmt"
+       "strings"
+       "testing"
+
+       "github.com/davecgh/go-spew/spew"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/errors"
+       "github.com/bytom/testutil"
+)
+
+func TestBlockHeader(t *testing.T) {
+       blockHeader := &BlockHeader{
+               Version:           1,
+               Height:            432234,
+               PreviousBlockHash: testutil.MustDecodeHash("c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0"),
+               Timestamp:         1522908275,
+               Nonce:             34342,
+               Bits:              2305843009222082559,
+               BlockCommitment: BlockCommitment{
+                       TransactionStatusHash:  testutil.MustDecodeHash("b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470"),
+                       TransactionsMerkleRoot: testutil.MustDecodeHash("ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03"),
+               },
+       }
+
+       wantHex := strings.Join([]string{
+               "01",     // serialization flags
+               "01",     // version
+               "eab01a", // block height
+               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+               "f3f896d605", // timestamp
+               "40",         // commitment extensible field length
+               "ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03", // transactions merkle root
+               "b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470", // tx status hash
+               "a68c02",             // nonce
+               "ffffff838080808020", // bits
+       }, "")
+
+       gotHex := testutil.Serialize(t, blockHeader)
+       want, err := hex.DecodeString(wantHex)
+       if err != nil {
+               t.Fatal(err)
+       }
+
+       if !bytes.Equal(gotHex, want) {
+               t.Errorf("empty block header bytes = %x want %x", gotHex, want)
+       }
+
+       gotBlockHeader := BlockHeader{}
+       if _, err := gotBlockHeader.readFrom(blockchain.NewReader(want)); err != nil {
+               t.Fatal(err)
+       }
+
+       if !testutil.DeepEqual(gotBlockHeader, *blockHeader) {
+               t.Errorf("got:\n%s\nwant:\n%s", spew.Sdump(gotBlockHeader), spew.Sdump(*blockHeader))
+       }
+}
+
+func TestMarshalBlockHeader(t *testing.T) {
+       cases := []struct {
+               blockHeader *BlockHeader
+               wantHex     string
+               wantError   error
+       }{
+               {
+                       blockHeader: &BlockHeader{
+                               Version:           1,
+                               Height:            10000,
+                               PreviousBlockHash: testutil.MustDecodeHash("c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0"),
+                               Timestamp:         1528945000,
+                               Nonce:             9253507043297,
+                               Bits:              2305843009214532812,
+                               BlockCommitment: BlockCommitment{
+                                       TransactionsMerkleRoot: testutil.MustDecodeHash("ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03"),
+                                       TransactionStatusHash:  testutil.MustDecodeHash("b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470"),
+                               },
+                       },
+                       wantHex: strings.Join([]string{
+                               "01",   // serialization flags
+                               "01",   // version
+                               "904e", // block height
+                               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+                               "e8b287d905", // timestamp
+                               "40",         // commitment extensible field length
+                               "ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03", // transactions merkle root
+                               "b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470", // tx status hash
+                               "e19f8080a88d02",     // nonce
+                               "cc99b3808080808020", // bits
+                       }, ""),
+               },
+               {
+                       blockHeader: &BlockHeader{
+                               Version:           1,
+                               Height:            9223372036854775808, // Height > MaxInt64(9223372036854775807)
+                               PreviousBlockHash: testutil.MustDecodeHash("c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0"),
+                               Timestamp:         1528945000,
+                               Nonce:             9253507043297,
+                               Bits:              2305843009222082559,
+                               BlockCommitment: BlockCommitment{
+                                       TransactionsMerkleRoot: testutil.MustDecodeHash("ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03"),
+                                       TransactionStatusHash:  testutil.MustDecodeHash("b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470"),
+                               },
+                       },
+                       wantError: blockchain.ErrRange,
+               },
+               {
+                       blockHeader: &BlockHeader{
+                               Version:           1,
+                               Height:            10000,
+                               PreviousBlockHash: testutil.MustDecodeHash("c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0"),
+                               Timestamp:         9223372036854775808, // Timestamp > MaxInt64(9223372036854775807)
+                               Nonce:             9253507043297,
+                               Bits:              2305843009222082559,
+                               BlockCommitment: BlockCommitment{
+                                       TransactionsMerkleRoot: testutil.MustDecodeHash("ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03"),
+                                       TransactionStatusHash:  testutil.MustDecodeHash("b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470"),
+                               },
+                       },
+                       wantError: blockchain.ErrRange,
+               },
+               {
+                       blockHeader: &BlockHeader{
+                               Version:           1,
+                               Height:            20000,
+                               PreviousBlockHash: testutil.MustDecodeHash("c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0"),
+                               Timestamp:         1528945000,
+                               Nonce:             9223372036854775808, // Nonce > MaxInt64(9223372036854775807)
+                               Bits:              2305843009222082559,
+                               BlockCommitment: BlockCommitment{
+                                       TransactionsMerkleRoot: testutil.MustDecodeHash("ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03"),
+                                       TransactionStatusHash:  testutil.MustDecodeHash("b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470"),
+                               },
+                       },
+                       wantError: blockchain.ErrRange,
+               },
+               {
+                       blockHeader: &BlockHeader{
+                               Version:           1,
+                               Height:            20000,
+                               PreviousBlockHash: testutil.MustDecodeHash("c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0"),
+                               Timestamp:         1528945000,
+                               Nonce:             9253507043297,
+                               Bits:              9223372036854775808, // Bits > MaxInt64(9223372036854775807)
+                               BlockCommitment: BlockCommitment{
+                                       TransactionsMerkleRoot: testutil.MustDecodeHash("ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03"),
+                                       TransactionStatusHash:  testutil.MustDecodeHash("b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470"),
+                               },
+                       },
+                       wantError: blockchain.ErrRange,
+               },
+               {
+                       blockHeader: &BlockHeader{
+                               Version:           1,
+                               Height:            9223372036854775807, // MaxInt64(9223372036854775807)
+                               PreviousBlockHash: testutil.MustDecodeHash("c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0"),
+                               Timestamp:         1528945000,
+                               Nonce:             9253507043297,
+                               Bits:              2305843009214532812,
+                       },
+                       wantHex: strings.Join([]string{
+                               "01",                 // serialization flags
+                               "01",                 // version
+                               "ffffffffffffffff7f", // block height
+                               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+                               "e8b287d905", // timestamp
+                               "40",         // commitment extensible field length
+                               "0000000000000000000000000000000000000000000000000000000000000000", // transactions merkle root
+                               "0000000000000000000000000000000000000000000000000000000000000000", // tx status hash
+                               "e19f8080a88d02",     // nonce
+                               "cc99b3808080808020", // bits
+                       }, ""),
+               },
+       }
+
+       for i, test := range cases {
+               got, err := test.blockHeader.MarshalText()
+               if err != nil && err != test.wantError {
+                       t.Errorf("test %d: got error = %x, want = %x", i, err, test.wantError)
+               } else if err != nil && err == test.wantError {
+                       continue
+               }
+
+               if string(got) != test.wantHex {
+                       t.Errorf("test %d: got strbytes = %s, want %s", i, string(got), test.wantHex)
+               }
+
+               resultBlockHeader := &BlockHeader{}
+               if err := resultBlockHeader.UnmarshalText(got); err != nil {
+                       t.Fatal(err)
+               }
+
+               if !testutil.DeepEqual(*resultBlockHeader, *test.blockHeader) {
+                       t.Errorf("test %d: got:\n%s\nwant:\n%s", i, spew.Sdump(*resultBlockHeader), spew.Sdump(*test.blockHeader))
+               }
+       }
+}
+
+func TestUnmarshalBlockHeader(t *testing.T) {
+       cases := []struct {
+               hexBlockHeader  string
+               wantBlockHeader *BlockHeader
+               wantError       error
+       }{
+               {
+                       hexBlockHeader: strings.Join([]string{
+                               "01",   // serialization flags (SerBlockHeader = 01)
+                               "01",   // version
+                               "904e", // block height
+                               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+                               "e8b287d905", // timestamp
+                               "40",         // commitment extensible field length
+                               "ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03", // transactions merkle root
+                               "b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470", // tx status hash
+                               "e19f8080a88d02",     // nonce
+                               "cc99b3808080808020", // bits
+                       }, ""),
+                       wantBlockHeader: &BlockHeader{
+                               Version:           1,
+                               Height:            10000,
+                               PreviousBlockHash: testutil.MustDecodeHash("c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0"),
+                               Timestamp:         1528945000,
+                               Nonce:             9253507043297,
+                               Bits:              2305843009214532812,
+                               BlockCommitment: BlockCommitment{
+                                       TransactionsMerkleRoot: testutil.MustDecodeHash("ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03"),
+                                       TransactionStatusHash:  testutil.MustDecodeHash("b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470"),
+                               },
+                       },
+               },
+               {
+                       hexBlockHeader: strings.Join([]string{
+                               "03",   // serialization flags (SerBlockFull = 03)
+                               "01",   // version
+                               "904e", // block height
+                               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+                               "e8b287d905", // timestamp
+                               "40",         // commitment extensible field length
+                               "ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03", // transactions merkle root
+                               "b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470", // tx status hash
+                               "e19f8080a88d02",     // nonce
+                               "cc99b3808080808020", // bits
+                       }, ""),
+                       wantBlockHeader: &BlockHeader{
+                               Version:           1,
+                               Height:            10000,
+                               PreviousBlockHash: testutil.MustDecodeHash("c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0"),
+                               Timestamp:         1528945000,
+                               Nonce:             9253507043297,
+                               Bits:              2305843009214532812,
+                               BlockCommitment: BlockCommitment{
+                                       TransactionsMerkleRoot: testutil.MustDecodeHash("ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03"),
+                                       TransactionStatusHash:  testutil.MustDecodeHash("b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470"),
+                               },
+                       },
+               },
+               {
+                       hexBlockHeader: strings.Join([]string{
+                               "02",   // serialization flags (SerBlockTransactions = 02)
+                               "01",   // version
+                               "904e", // block height
+                               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+                               "e8b287d905", // timestamp
+                               "40",         // commitment extensible field length
+                               "ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03", // transactions merkle root
+                               "b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470", // tx status hash
+                               "e19f8080a88d02",     // nonce
+                               "cc99b3808080808020", // bits
+                       }, ""),
+                       wantError: fmt.Errorf("unsupported serialization flags 0x02"),
+               },
+               {
+                       hexBlockHeader: strings.Join([]string{
+                               "01",  // serialization flags
+                               "01",  // version
+                               "908", // block height (error with odd length)
+                               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+                               "e8b287d905", // timestamp
+                               "40",         // commitment extensible field length
+                               "ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03", // transactions merkle root
+                               "b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470", // tx status hash
+                               "e19f8080a88d02",     // nonce
+                               "cc99b3808080808020", // bits
+                       }, ""),
+                       wantError: hex.ErrLength,
+               },
+               {
+                       hexBlockHeader: strings.Join([]string{
+                               "01",                 // serialization flags
+                               "01",                 // version
+                               "ffffffffffffffff7f", // block height
+                               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+                               "e8b287d905", // timestamp
+                               "40",         // commitment extensible field length
+                               "ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03", // transactions merkle root
+                               "b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470", // tx status hash
+                               "e19f8080a88d02",       // nonce
+                               "ffffffffffffffffff20", // bits
+                       }, ""),
+                       wantError: errors.New("binary: varint overflows a 64-bit integer"),
+               },
+               {
+                       hexBlockHeader: strings.Join([]string{
+                               "01",                 // serialization flags
+                               "01",                 // version
+                               "ffffffffffffffff7f", // block height
+                               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+                               "e8b287d905", // timestamp
+                               "40",         // commitment extensible field length
+                               "ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03", // transactions merkle root
+                               "b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470", // tx status hash
+                               "e19f8080a88d02",     // nonce
+                               "ffffffffffffffff80", // bits
+                       }, ""),
+                       wantError: fmt.Errorf("EOF"),
+               },
+               {
+                       hexBlockHeader: strings.Join([]string{
+                               "01",                 // serialization flags
+                               "01",                 // version
+                               "ffffffffffffffff7f", // block height
+                               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+                               "e8b287d905", // timestamp
+                               "40",         // commitment extensible field length
+                               "ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03", // transactions merkle root
+                               "b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470", // tx status hash
+                               "e19f8080a88d02",       // nonce
+                               "ffffffffffffffffff01", // bits
+                       }, ""),
+                       wantError: blockchain.ErrRange,
+               },
+               {
+                       hexBlockHeader: strings.Join([]string{
+                               "01",                 // serialization flags
+                               "01",                 // version
+                               "ffffffffffffffff7f", // block height
+                               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+                               "e8b287d905", // timestamp
+                               "40",         // commitment extensible field length
+                               "ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03", // transactions merkle root
+                               "b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470", // tx status hash
+                               "e19f8080a88d02",     // nonce
+                               "cc99b3808080808020", // bits
+                       }, ""),
+                       wantBlockHeader: &BlockHeader{
+                               Version:           1,
+                               Height:            9223372036854775807, // MaxInt64(9223372036854775807)
+                               PreviousBlockHash: testutil.MustDecodeHash("c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0"),
+                               Timestamp:         1528945000,
+                               Nonce:             9253507043297,
+                               Bits:              2305843009214532812,
+                               BlockCommitment: BlockCommitment{
+                                       TransactionsMerkleRoot: testutil.MustDecodeHash("ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03"),
+                                       TransactionStatusHash:  testutil.MustDecodeHash("b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470"),
+                               },
+                       },
+               },
+       }
+
+       for i, test := range cases {
+               resultBlockHeader := &BlockHeader{}
+               err := resultBlockHeader.UnmarshalText([]byte(test.hexBlockHeader))
+               if err != nil && err.Error() != test.wantError.Error() {
+                       t.Errorf("test %d: got error = %s, want = %s", i, err.Error(), test.wantError.Error())
+               } else if err != nil && err.Error() == test.wantError.Error() {
+                       continue
+               }
+
+               if !testutil.DeepEqual(*resultBlockHeader, *test.wantBlockHeader) {
+                       t.Errorf("test %d: got:\n%s\nwant:\n%s", i, spew.Sdump(*resultBlockHeader), spew.Sdump(*test.wantBlockHeader))
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/block_test.go b/vendor/github.com/bytom/protocol/bc/types/block_test.go
new file mode 100644 (file)
index 0000000..e4936ef
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/block_test.go
@@ -0,0 +1,228 @@
+package types
+
+import (
+       "bytes"
+       "encoding/hex"
+       "encoding/json"
+       "strings"
+       "testing"
+
+       "github.com/davecgh/go-spew/spew"
+
+       "github.com/bytom/consensus"
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/protocol/bc"
+       "github.com/bytom/testutil"
+)
+
+func TestBlock(t *testing.T) {
+       cases := []struct {
+               block *Block
+               hex   string
+               hash  bc.Hash
+       }{
+               {
+                       block: &Block{
+                               BlockHeader: BlockHeader{
+                                       Version: 1,
+                                       Height:  1,
+                               },
+                               Transactions: []*Tx{},
+                       },
+                       hex: strings.Join([]string{
+                               "03", // serialization flags
+                               "01", // version
+                               "01", // block height
+                               "0000000000000000000000000000000000000000000000000000000000000000", // prev block hash
+                               "00", // timestamp
+                               "40", // commitment extensible field length
+                               "0000000000000000000000000000000000000000000000000000000000000000", // transactions merkle root
+                               "0000000000000000000000000000000000000000000000000000000000000000", // tx status hash
+                               "00", // nonce
+                               "00", // bits
+                               "00", // num transactions
+                       }, ""),
+                       hash: testutil.MustDecodeHash("9609d2e45760f34cbc6c6d948c3fb9b6d7b61552d9d17fdd5b7d0cb5d2e67244"),
+               },
+               {
+                       block: &Block{
+                               BlockHeader: BlockHeader{
+                                       Version:           1,
+                                       Height:            432234,
+                                       PreviousBlockHash: testutil.MustDecodeHash("c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0"),
+                                       Timestamp:         1522908275,
+                                       Nonce:             34342,
+                                       Bits:              2305843009222082559,
+                                       BlockCommitment: BlockCommitment{
+                                               TransactionStatusHash:  testutil.MustDecodeHash("b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470"),
+                                               TransactionsMerkleRoot: testutil.MustDecodeHash("ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03"),
+                                       },
+                               },
+                               Transactions: []*Tx{
+                                       NewTx(TxData{
+                                               Version:        1,
+                                               SerializedSize: uint64(261),
+                                               TimeRange:      654,
+                                               Inputs: []*TxInput{
+                                                       NewIssuanceInput([]byte("nonce"), 254354, []byte("issuanceProgram"), [][]byte{[]byte("arguments1"), []byte("arguments2")}, []byte("assetDefinition")),
+                                                       NewSpendInput([][]byte{[]byte("arguments3"), []byte("arguments4")}, testutil.MustDecodeHash("fad5195a0c8e3b590b86a3c0a95e7529565888508aecca96e9aeda633002f409"), *consensus.BTMAssetID, 254354, 3, []byte("spendProgram")),
+                                               },
+                                               Outputs: []*TxOutput{
+                                                       NewTxOutput(testutil.MustDecodeAsset("a69849e11add96ac7053aad22ba2349a4abf5feb0475a0afcadff4e128be76cf"), 254354, []byte("true")),
+                                               },
+                                       }),
+                                       NewTx(TxData{
+                                               Version:        1,
+                                               SerializedSize: uint64(108),
+                                               Inputs: []*TxInput{
+                                                       NewCoinbaseInput([]byte("arbitrary")),
+                                               },
+                                               Outputs: []*TxOutput{
+                                                       NewTxOutput(*consensus.BTMAssetID, 254354, []byte("true")),
+                                                       NewTxOutput(*consensus.BTMAssetID, 254354, []byte("false")),
+                                               },
+                                       }),
+                               },
+                       },
+                       hex: strings.Join([]string{
+                               "03",     // serialization flags
+                               "01",     // version
+                               "eab01a", // block height
+                               "c34048bd60c4c13144fd34f408627d1be68f6cb4fdd34e879d6d791060ea73a0", // prev block hash
+                               "f3f896d605", // timestamp
+                               "40",         // commitment extensible field length
+                               "ad9ac003d08ff305181a345d64fe0b02311cc1a6ec04ab73f3318d90139bfe03", // transactions merkle root
+                               "b94301ea4e316bee00109f68d25beaca90aeff08e9bf439a37d91d7a3b5a1470", // tx status hash
+                               "a68c02",             // nonce
+                               "ffffff838080808020", // bits
+                               "02",                 // num transactions
+                               "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",
+                               "07010001010b020961726269747261727900020129ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff92c30f01047472756500012affffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff92c30f010566616c736500",
+                       }, ""),
+                       hash: testutil.MustDecodeHash("86c833711a6a6b59864708d9dbae7869ba10782e3e7b1c7fc9fe3514899fec80"),
+               },
+       }
+
+       for i, test := range cases {
+               got := testutil.Serialize(t, test.block)
+               want, err := hex.DecodeString(test.hex)
+               if err != nil {
+                       t.Fatal(err)
+               }
+
+               if !bytes.Equal(got, want) {
+                       t.Errorf("test %d: bytes = %x want %x", i, got, want)
+               }
+
+               blockHash := test.block.Hash()
+               if blockHash != test.hash {
+                       t.Errorf("test %d: hash = %s want %s", i, blockHash.String(), test.hash.String())
+               }
+
+               blockJSON, err := json.Marshal(test.block)
+               if err != nil {
+                       t.Errorf("test %d: error marshaling block to json: %s", i, err)
+               }
+
+               blockFromJSON := Block{}
+               if err := json.Unmarshal(blockJSON, &blockFromJSON); err != nil {
+                       t.Errorf("test %d: error unmarshaling block from json: %s", i, err)
+               }
+               if !testutil.DeepEqual(*test.block, blockFromJSON) {
+                       t.Errorf("test %d: got:\n%s\nwant:\n%s", i, spew.Sdump(blockFromJSON), spew.Sdump(*test.block))
+               }
+       }
+}
+
+func TestReadFrom(t *testing.T) {
+       btmAssetID := testutil.MustDecodeAsset("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
+
+       cases := []struct {
+               rawBlock  string
+               wantBlock Block
+       }{
+               {
+                       rawBlock: "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",
+                       wantBlock: Block{
+                               BlockHeader: BlockHeader{
+                                       Version:           1,
+                                       Height:            12171,
+                                       PreviousBlockHash: testutil.MustDecodeHash("3077f24528e94ecfc4491bb2e9ed6264a632a9a4b86b00c88093ca545d14a137"),
+                                       Timestamp:         1553496788,
+                                       Nonce:             23,
+                                       Bits:              2305843009213970283,
+                                       BlockCommitment: BlockCommitment{
+                                               TransactionsMerkleRoot: testutil.MustDecodeHash("35a2d11158f47a5c5267630b2b6cf9e9a5f79a598085a2572a68defeb8013ad2"),
+                                               TransactionStatusHash:  testutil.MustDecodeHash("6978a65b4ee5b6f4914fe5c05000459a803ecf59132604e5d334d64249c5e50a"),
+                                       },
+                               },
+                               Transactions: []*Tx{
+                                       {
+                                               TxData: TxData{
+                                                       Version:        1,
+                                                       SerializedSize: 81,
+                                                       TimeRange:      0,
+                                                       Inputs: []*TxInput{
+                                                               NewCoinbaseInput(testutil.MustDecodeHexString("003132313731")),
+                                                       },
+                                                       Outputs: []*TxOutput{
+                                                               NewTxOutput(btmAssetID, 41450000000, testutil.MustDecodeHexString("001437e1aec83a4e6587ca9609e4e5aa728db7007449")),
+                                                       },
+                                               },
+                                       },
+                                       {
+                                               TxData: TxData{
+                                                       Version:        1,
+                                                       SerializedSize: 560,
+                                                       TimeRange:      0,
+                                                       Inputs: []*TxInput{
+                                                               NewSpendInput(
+                                                                       [][]byte{
+                                                                               testutil.MustDecodeHexString("5760b15cc09e543437c4e3aad05bf073e82ebdb214beccb5f4473653dfc0a9d5ae59fb149de19eb71c1c1399594757aeea4dd6327ca2790ef919bd20caa86104"),
+                                                                               testutil.MustDecodeHexString("1381d35e235813ad1e62f9a602c82abee90565639cc4573568206b55bcd2aed9"),
+                                                                       },
+                                                                       testutil.MustDecodeHash("4b5cb973f5bef4eadde4c89b92ee73312b940e84164da0594149554cc8a2adea"),
+                                                                       btmAssetID,
+                                                                       9800000000,
+                                                                       2,
+                                                                       testutil.MustDecodeHexString("0014cb9f2391bafe2bc1159b2c4c8a0f17ba1b4dd94e"),
+                                                               ),
+                                                               NewIssuanceInput(
+                                                                       testutil.MustDecodeHexString("40142084606f20ca"),
+                                                                       100000000000,
+                                                                       testutil.MustDecodeHexString("ae2054a71277cc162eb3eb21b5bd9fe54402829a53b294deaed91692a2cd8a081f9c5151ad"),
+                                                                       [][]byte{testutil.MustDecodeHexString("621c2c3554da50d2a492d9d78be7c6159359d8f5f0b93a054ce0133617a61d85c532aff449b97a3ec2804ca5fe12b4d54aa6e8c3215c33d04abee9c9abdfdb03")},
+                                                                       testutil.MustDecodeHexString("7b0a202022646563696d616c73223a20382c0a2020226465736372697074696f6e223a207b7d2c0a2020226e616d65223a2022222c0a20202273796d626f6c223a2022220a7d"),
+                                                               ),
+                                                       },
+                                                       Outputs: []*TxOutput{
+                                                               NewTxOutput(btmAssetID, 9600000000, testutil.MustDecodeHexString("00144b61da45324299e40dacc255e2ea07dfce3a56d2")),
+                                                               NewTxOutput(testutil.MustDecodeAsset("7b38dc897329a288ea31031724f5c55bcafec80468a546955023380af2faad14"), 100000000000, testutil.MustDecodeHexString("001437e1aec83a4e6587ca9609e4e5aa728db7007449")),
+                                                       },
+                                               },
+                                       },
+                               },
+                       },
+               },
+       }
+
+       for _, c := range cases {
+               blockBytes, err := hex.DecodeString(c.rawBlock)
+               if err != nil {
+                       t.Fatal(err)
+               }
+
+               block := &Block{}
+               if err := block.readFrom(blockchain.NewReader(blockBytes)); err != nil {
+                       t.Fatal(err)
+               }
+
+               for _, tx := range c.wantBlock.Transactions {
+                       tx.Tx = MapTx(&tx.TxData)
+               }
+
+               if !testutil.DeepEqual(*block, c.wantBlock) {
+                       t.Errorf("test block read from fail, got:%v, want:%v", *block, c.wantBlock)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/coinbase.go b/vendor/github.com/bytom/protocol/bc/types/coinbase.go
new file mode 100644 (file)
index 0000000..bf0797d
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/coinbase.go
@@ -0,0 +1,17 @@
+package types
+
+// CoinbaseInput records the coinbase message
+type CoinbaseInput struct {
+       Arbitrary []byte
+}
+
+// NewCoinbaseInput creates a new coinbase input struct
+func NewCoinbaseInput(arbitrary []byte) *TxInput {
+       return &TxInput{
+               AssetVersion: 1,
+               TypedInput:   &CoinbaseInput{Arbitrary: arbitrary},
+       }
+}
+
+// InputType is the interface function for return the input type
+func (cb *CoinbaseInput) InputType() uint8 { return CoinbaseInputType }

diff --git a/vendor/github.com/bytom/protocol/bc/types/issuance.go b/vendor/github.com/bytom/protocol/bc/types/issuance.go
new file mode 100644 (file)
index 0000000..ff8feeb
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/issuance.go
@@ -0,0 +1,59 @@
+package types
+
+import (
+       "github.com/bytom/crypto/sha3pool"
+       "github.com/bytom/protocol/bc"
+)
+
+// IssuanceInput satisfies the TypedInput interface and represents a issuance.
+type IssuanceInput struct {
+       Nonce  []byte
+       Amount uint64
+
+       AssetDefinition []byte
+       VMVersion       uint64
+       IssuanceProgram []byte
+       Arguments       [][]byte
+}
+
+// NewIssuanceInput create a new IssuanceInput struct.
+func NewIssuanceInput(nonce []byte, amount uint64, issuanceProgram []byte, arguments [][]byte, assetDefinition []byte) *TxInput {
+       return &TxInput{
+               AssetVersion: 1,
+               TypedInput: &IssuanceInput{
+                       Nonce:           nonce,
+                       Amount:          amount,
+                       AssetDefinition: assetDefinition,
+                       VMVersion:       1,
+                       IssuanceProgram: issuanceProgram,
+                       Arguments:       arguments,
+               },
+       }
+}
+
+// InputType is the interface function for return the input type.
+func (ii *IssuanceInput) InputType() uint8 { return IssuanceInputType }
+
+// AssetID calculate the assetID of the issuance input.
+func (ii *IssuanceInput) AssetID() bc.AssetID {
+       defhash := ii.AssetDefinitionHash()
+       return bc.ComputeAssetID(ii.IssuanceProgram, ii.VMVersion, &defhash)
+}
+
+// AssetDefinitionHash return the hash of the issuance asset definition.
+func (ii *IssuanceInput) AssetDefinitionHash() (defhash bc.Hash) {
+       sha := sha3pool.Get256()
+       defer sha3pool.Put256(sha)
+       sha.Write(ii.AssetDefinition)
+       defhash.ReadFrom(sha)
+       return defhash
+}
+
+// NonceHash return the hash of the issuance asset definition.
+func (ii *IssuanceInput) NonceHash() (hash bc.Hash) {
+       sha := sha3pool.Get256()
+       defer sha3pool.Put256(sha)
+       sha.Write(ii.Nonce)
+       hash.ReadFrom(sha)
+       return hash
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/map.go b/vendor/github.com/bytom/protocol/bc/types/map.go
new file mode 100644 (file)
index 0000000..4975bd7
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/map.go
@@ -0,0 +1,193 @@
+package types
+
+import (
+       "github.com/bytom/consensus"
+       "github.com/bytom/protocol/bc"
+       "github.com/bytom/protocol/vm"
+       "github.com/bytom/protocol/vm/vmutil"
+)
+
+// MapTx converts a types TxData object into its entries-based
+// representation.
+func MapTx(oldTx *TxData) *bc.Tx {
+       txID, txHeader, entries := mapTx(oldTx)
+       tx := &bc.Tx{
+               TxHeader: txHeader,
+               ID:       txID,
+               Entries:  entries,
+               InputIDs: make([]bc.Hash, len(oldTx.Inputs)),
+       }
+
+       spentOutputIDs := make(map[bc.Hash]bool)
+       for id, e := range entries {
+               var ord uint64
+               switch e := e.(type) {
+               case *bc.Issuance:
+                       ord = e.Ordinal
+
+               case *bc.Spend:
+                       ord = e.Ordinal
+                       spentOutputIDs[*e.SpentOutputId] = true
+                       if *e.WitnessDestination.Value.AssetId == *consensus.BTMAssetID {
+                               tx.GasInputIDs = append(tx.GasInputIDs, id)
+                       }
+
+               case *bc.Coinbase:
+                       ord = 0
+                       tx.GasInputIDs = append(tx.GasInputIDs, id)
+
+               default:
+                       continue
+               }
+
+               if ord >= uint64(len(oldTx.Inputs)) {
+                       continue
+               }
+               tx.InputIDs[ord] = id
+       }
+
+       for id := range spentOutputIDs {
+               tx.SpentOutputIDs = append(tx.SpentOutputIDs, id)
+       }
+       return tx
+}
+
+func mapTx(tx *TxData) (headerID bc.Hash, hdr *bc.TxHeader, entryMap map[bc.Hash]bc.Entry) {
+       entryMap = make(map[bc.Hash]bc.Entry)
+       addEntry := func(e bc.Entry) bc.Hash {
+               id := bc.EntryID(e)
+               entryMap[id] = e
+               return id
+       }
+
+       var (
+               spends    []*bc.Spend
+               issuances []*bc.Issuance
+               coinbase  *bc.Coinbase
+       )
+
+       muxSources := make([]*bc.ValueSource, len(tx.Inputs))
+       for i, input := range tx.Inputs {
+               switch inp := input.TypedInput.(type) {
+               case *IssuanceInput:
+                       nonceHash := inp.NonceHash()
+                       assetDefHash := inp.AssetDefinitionHash()
+                       value := input.AssetAmount()
+
+                       issuance := bc.NewIssuance(&nonceHash, &value, uint64(i))
+                       issuance.WitnessAssetDefinition = &bc.AssetDefinition{
+                               Data: &assetDefHash,
+                               IssuanceProgram: &bc.Program{
+                                       VmVersion: inp.VMVersion,
+                                       Code:      inp.IssuanceProgram,
+                               },
+                       }
+                       issuance.WitnessArguments = inp.Arguments
+                       issuanceID := addEntry(issuance)
+
+                       muxSources[i] = &bc.ValueSource{
+                               Ref:   &issuanceID,
+                               Value: &value,
+                       }
+                       issuances = append(issuances, issuance)
+
+               case *SpendInput:
+                       // create entry for prevout
+                       prog := &bc.Program{VmVersion: inp.VMVersion, Code: inp.ControlProgram}
+                       src := &bc.ValueSource{
+                               Ref:      &inp.SourceID,
+                               Value:    &inp.AssetAmount,
+                               Position: inp.SourcePosition,
+                       }
+                       prevout := bc.NewOutput(src, prog, 0) // ordinal doesn't matter for prevouts, only for result outputs
+                       prevoutID := addEntry(prevout)
+                       // create entry for spend
+                       spend := bc.NewSpend(&prevoutID, uint64(i))
+                       spend.WitnessArguments = inp.Arguments
+                       spendID := addEntry(spend)
+                       // setup mux
+                       muxSources[i] = &bc.ValueSource{
+                               Ref:   &spendID,
+                               Value: &inp.AssetAmount,
+                       }
+                       spends = append(spends, spend)
+
+               case *CoinbaseInput:
+                       coinbase = bc.NewCoinbase(inp.Arbitrary)
+                       coinbaseID := addEntry(coinbase)
+
+                       out := tx.Outputs[0]
+                       muxSources[i] = &bc.ValueSource{
+                               Ref:   &coinbaseID,
+                               Value: &out.AssetAmount,
+                       }
+               }
+       }
+
+       mux := bc.NewMux(muxSources, &bc.Program{VmVersion: 1, Code: []byte{byte(vm.OP_TRUE)}})
+       muxID := addEntry(mux)
+
+       // connect the inputs to the mux
+       for _, spend := range spends {
+               spentOutput := entryMap[*spend.SpentOutputId].(*bc.Output)
+               spend.SetDestination(&muxID, spentOutput.Source.Value, spend.Ordinal)
+       }
+       for _, issuance := range issuances {
+               issuance.SetDestination(&muxID, issuance.Value, issuance.Ordinal)
+       }
+
+       if coinbase != nil {
+               coinbase.SetDestination(&muxID, mux.Sources[0].Value, 0)
+       }
+
+       // convert types.outputs to the bc.output
+       var resultIDs []*bc.Hash
+       for i, out := range tx.Outputs {
+               src := &bc.ValueSource{
+                       Ref:      &muxID,
+                       Value:    &out.AssetAmount,
+                       Position: uint64(i),
+               }
+               var resultID bc.Hash
+               if vmutil.IsUnspendable(out.ControlProgram) {
+                       // retirement
+                       r := bc.NewRetirement(src, uint64(i))
+                       resultID = addEntry(r)
+               } else {
+                       // non-retirement
+                       prog := &bc.Program{out.VMVersion, out.ControlProgram}
+                       o := bc.NewOutput(src, prog, uint64(i))
+                       resultID = addEntry(o)
+               }
+
+               dest := &bc.ValueDestination{
+                       Value:    src.Value,
+                       Ref:      &resultID,
+                       Position: 0,
+               }
+               resultIDs = append(resultIDs, &resultID)
+               mux.WitnessDestinations = append(mux.WitnessDestinations, dest)
+       }
+
+       h := bc.NewTxHeader(tx.Version, tx.SerializedSize, tx.TimeRange, resultIDs)
+       return addEntry(h), h, entryMap
+}
+
+func mapBlockHeader(old *BlockHeader) (bc.Hash, *bc.BlockHeader) {
+       bh := bc.NewBlockHeader(old.Version, old.Height, &old.PreviousBlockHash, old.Timestamp, &old.TransactionsMerkleRoot, &old.TransactionStatusHash, old.Nonce, old.Bits)
+       return bc.EntryID(bh), bh
+}
+
+// MapBlock converts a types block to bc block
+func MapBlock(old *Block) *bc.Block {
+       if old == nil {
+               return nil
+       }
+
+       b := new(bc.Block)
+       b.ID, b.BlockHeader = mapBlockHeader(&old.BlockHeader)
+       for _, oldTx := range old.Transactions {
+               b.Transactions = append(b.Transactions, oldTx.Tx)
+       }
+       return b
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/map_test.go b/vendor/github.com/bytom/protocol/bc/types/map_test.go
new file mode 100644 (file)
index 0000000..8b6c366
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/map_test.go
@@ -0,0 +1,159 @@
+package types
+
+import (
+       "bytes"
+       "testing"
+
+       "github.com/davecgh/go-spew/spew"
+
+       "github.com/bytom/consensus"
+       "github.com/bytom/protocol/bc"
+       "github.com/bytom/testutil"
+)
+
+func TestMapSpendTx(t *testing.T) {
+       cases := []*TxData{
+               &TxData{
+                       Inputs: []*TxInput{
+                               NewSpendInput(nil, testutil.MustDecodeHash("fad5195a0c8e3b590b86a3c0a95e7529565888508aecca96e9aeda633002f409"), *consensus.BTMAssetID, 88, 3, []byte{1}),
+                       },
+                       Outputs: []*TxOutput{
+                               NewTxOutput(*consensus.BTMAssetID, 80, []byte{1}),
+                       },
+               },
+               &TxData{
+                       Inputs: []*TxInput{
+                               NewIssuanceInput([]byte("nonce"), 254354, []byte("issuanceProgram"), [][]byte{[]byte("arguments1"), []byte("arguments2")}, []byte("assetDefinition")),
+                       },
+                       Outputs: []*TxOutput{
+                               NewTxOutput(*consensus.BTMAssetID, 80, []byte{1}),
+                       },
+               },
+               &TxData{
+                       Inputs: []*TxInput{
+                               NewIssuanceInput([]byte("nonce"), 254354, []byte("issuanceProgram"), [][]byte{[]byte("arguments1"), []byte("arguments2")}, []byte("assetDefinition")),
+                               NewSpendInput(nil, testutil.MustDecodeHash("db7b16ac737440d6e38559996ddabb207d7ce84fbd6f3bfd2525d234761dc863"), *consensus.BTMAssetID, 88, 3, []byte{1}),
+                       },
+                       Outputs: []*TxOutput{
+                               NewTxOutput(*consensus.BTMAssetID, 80, []byte{1}),
+                               NewTxOutput(*consensus.BTMAssetID, 80, []byte{1}),
+                       },
+               },
+       }
+
+       for _, txData := range cases {
+               tx := MapTx(txData)
+               if len(tx.ResultIds) != len(txData.Outputs) {
+                       t.Errorf("ResultIds contains %d item(s), expected %d", len(tx.ResultIds), len(txData.Outputs))
+               }
+
+               for i, oldIn := range txData.Inputs {
+                       resultEntry, ok := tx.Entries[tx.InputIDs[i]]
+                       if !ok {
+                               t.Errorf("entryMap contains nothing for tx.InputIDs[%d] (%x)", i, tx.InputIDs[i].Bytes())
+                       }
+                       switch newInput := resultEntry.(type) {
+                       case *bc.Issuance:
+                               if *newInput.Value.AssetId != oldIn.AssetID() || newInput.Value.Amount != oldIn.Amount() {
+                                       t.Errorf("tx.InputIDs[%d]'s asset amount is not equal after map'", i)
+                               }
+                       case *bc.Spend:
+                               spendOut, err := tx.Output(*newInput.SpentOutputId)
+                               if err != nil {
+                                       t.Fatal(err)
+                               }
+                               if *spendOut.Source.Value != oldIn.AssetAmount() {
+                                       t.Errorf("tx.InputIDs[%d]'s asset amount is not equal after map'", i)
+                               }
+                       default:
+                               t.Errorf("unexpect input type")
+                       }
+               }
+
+               for i, oldOut := range txData.Outputs {
+                       resultEntry, ok := tx.Entries[*tx.ResultIds[i]]
+                       if !ok {
+                               t.Errorf("entryMap contains nothing for header.ResultIds[%d] (%x)", i, tx.ResultIds[i].Bytes())
+                       }
+                       newOut, ok := resultEntry.(*bc.Output)
+                       if !ok {
+                               t.Errorf("header.ResultIds[%d] has type %T, expected *Output", i, resultEntry)
+                       }
+
+                       if *newOut.Source.Value != oldOut.AssetAmount {
+                               t.Errorf("header.ResultIds[%d].(*output).Source is %v, expected %v", i, newOut.Source.Value, oldOut.AssetAmount)
+                       }
+                       if newOut.ControlProgram.VmVersion != 1 {
+                               t.Errorf("header.ResultIds[%d].(*output).ControlProgram.VMVersion is %d, expected 1", i, newOut.ControlProgram.VmVersion)
+                       }
+                       if !bytes.Equal(newOut.ControlProgram.Code, oldOut.ControlProgram) {
+                               t.Errorf("header.ResultIds[%d].(*output).ControlProgram.Code is %x, expected %x", i, newOut.ControlProgram.Code, oldOut.ControlProgram)
+                       }
+
+               }
+       }
+}
+
+func TestMapCoinbaseTx(t *testing.T) {
+       txData := &TxData{
+               Inputs: []*TxInput{
+                       NewCoinbaseInput([]byte("TestMapCoinbaseTx")),
+               },
+               Outputs: []*TxOutput{
+                       NewTxOutput(*consensus.BTMAssetID, 800000000000, []byte{1}),
+               },
+       }
+       oldOut := txData.Outputs[0]
+
+       tx := MapTx(txData)
+       t.Log(spew.Sdump(tx.Entries))
+
+       if len(tx.InputIDs) != 1 {
+               t.Errorf("expect to  only have coinbase input id")
+       }
+       if len(tx.SpentOutputIDs) != 0 {
+               t.Errorf("coinbase tx doesn't spend any utxo")
+       }
+       if len(tx.GasInputIDs) != 1 {
+               t.Errorf("coinbase tx should have 1 gas input")
+       }
+       if len(tx.ResultIds) != 1 {
+               t.Errorf("expect to  only have one output")
+       }
+
+       outEntry, ok := tx.Entries[*tx.ResultIds[0]]
+       if !ok {
+               t.Errorf("entryMap contains nothing for output")
+       }
+       newOut, ok := outEntry.(*bc.Output)
+       if !ok {
+               t.Errorf("header.ResultIds[0] has type %T, expected *Output", outEntry)
+       }
+       if *newOut.Source.Value != oldOut.AssetAmount {
+               t.Errorf("(*output).Source is %v, expected %v", newOut.Source.Value, oldOut.AssetAmount)
+       }
+
+       muxEntry, ok := tx.Entries[*newOut.Source.Ref]
+       if !ok {
+               t.Errorf("entryMap contains nothing for mux")
+       }
+       mux, ok := muxEntry.(*bc.Mux)
+       if !ok {
+               t.Errorf("muxEntry has type %T, expected *Mux", muxEntry)
+       }
+       if *mux.WitnessDestinations[0].Value != *newOut.Source.Value {
+               t.Errorf("(*Mux).Destinations is %v, expected %v", *mux.WitnessDestinations[0].Value, *newOut.Source.Value)
+       }
+
+       coinbaseEntry, ok := tx.Entries[tx.InputIDs[0]]
+       if !ok {
+               t.Errorf("entryMap contains nothing for coinbase input")
+       }
+       coinbase, ok := coinbaseEntry.(*bc.Coinbase)
+       if !ok {
+               t.Errorf("inputEntry has type %T, expected *Coinbase", coinbaseEntry)
+       }
+       if coinbase.WitnessDestination.Value != mux.Sources[0].Value {
+               t.Errorf("(*Coinbase).Destination is %v, expected %v", coinbase.WitnessDestination.Value, *mux.Sources[0].Value)
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/merkle.go b/vendor/github.com/bytom/protocol/bc/types/merkle.go
new file mode 100644 (file)
index 0000000..78fbac7
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/merkle.go
@@ -0,0 +1,344 @@
+package types
+
+import (
+       "container/list"
+       "io"
+       "math"
+
+       "gopkg.in/fatih/set.v0"
+
+       "github.com/bytom/crypto/sha3pool"
+       "github.com/bytom/protocol/bc"
+)
+
+// merkleFlag represent the type of merkle tree node, it's used to generate the structure of merkle tree
+// Bitcoin has only two flags, which zero means the hash of assist node. And one means the hash of the related
+// transaction node or it's parents, which distinguish them according to the height of the tree. But in the bytom,
+// the height of transaction node is not fixed, so we need three flags to distinguish these nodes.
+const (
+       // FlagAssist represent assist node
+       FlagAssist = iota
+       // FlagTxParent represent the parent of transaction of node
+       FlagTxParent
+       // FlagTxLeaf represent transaction of node
+       FlagTxLeaf
+)
+
+var (
+       leafPrefix     = []byte{0x00}
+       interiorPrefix = []byte{0x01}
+)
+
+type merkleNode interface {
+       WriteTo(io.Writer) (int64, error)
+}
+
+func merkleRoot(nodes []merkleNode) (root bc.Hash, err error) {
+       switch {
+       case len(nodes) == 0:
+               return bc.EmptyStringHash, nil
+
+       case len(nodes) == 1:
+               root = leafMerkleHash(nodes[0])
+               return root, nil
+
+       default:
+               k := prevPowerOfTwo(len(nodes))
+               left, err := merkleRoot(nodes[:k])
+               if err != nil {
+                       return root, err
+               }
+
+               right, err := merkleRoot(nodes[k:])
+               if err != nil {
+                       return root, err
+               }
+
+               root = interiorMerkleHash(&left, &right)
+               return root, nil
+       }
+}
+
+func interiorMerkleHash(left merkleNode, right merkleNode) (hash bc.Hash) {
+       h := sha3pool.Get256()
+       defer sha3pool.Put256(h)
+       h.Write(interiorPrefix)
+       left.WriteTo(h)
+       right.WriteTo(h)
+       hash.ReadFrom(h)
+       return hash
+}
+
+func leafMerkleHash(node merkleNode) (hash bc.Hash) {
+       h := sha3pool.Get256()
+       defer sha3pool.Put256(h)
+       h.Write(leafPrefix)
+       node.WriteTo(h)
+       hash.ReadFrom(h)
+       return hash
+}
+
+type merkleTreeNode struct {
+       hash  bc.Hash
+       left  *merkleTreeNode
+       right *merkleTreeNode
+}
+
+// buildMerkleTree construct a merkle tree based on the provide node data
+func buildMerkleTree(rawDatas []merkleNode) *merkleTreeNode {
+       switch len(rawDatas) {
+       case 0:
+               return nil
+       case 1:
+               rawData := rawDatas[0]
+               merkleHash := leafMerkleHash(rawData)
+               node := newMerkleTreeNode(merkleHash, nil, nil)
+               return node
+       default:
+               k := prevPowerOfTwo(len(rawDatas))
+               left := buildMerkleTree(rawDatas[:k])
+               right := buildMerkleTree(rawDatas[k:])
+               merkleHash := interiorMerkleHash(&left.hash, &right.hash)
+               node := newMerkleTreeNode(merkleHash, left, right)
+               return node
+       }
+}
+
+func (node *merkleTreeNode) getMerkleTreeProof(merkleHashSet *set.Set) ([]*bc.Hash, []uint8) {
+       var hashes []*bc.Hash
+       var flags []uint8
+
+       if node.left == nil && node.right == nil {
+               if key := node.hash.String(); merkleHashSet.Has(key) {
+                       hashes = append(hashes, &node.hash)
+                       flags = append(flags, FlagTxLeaf)
+                       return hashes, flags
+               }
+               return hashes, flags
+       }
+       var leftHashes, rightHashes []*bc.Hash
+       var leftFlags, rightFlags []uint8
+       if node.left != nil {
+               leftHashes, leftFlags = node.left.getMerkleTreeProof(merkleHashSet)
+       }
+       if node.right != nil {
+               rightHashes, rightFlags = node.right.getMerkleTreeProof(merkleHashSet)
+       }
+       leftFind, rightFind := len(leftHashes) > 0, len(rightHashes) > 0
+
+       if leftFind || rightFind {
+               flags = append(flags, FlagTxParent)
+       } else {
+               return hashes, flags
+       }
+
+       if leftFind {
+               hashes = append(hashes, leftHashes...)
+               flags = append(flags, leftFlags...)
+       } else {
+               hashes = append(hashes, &node.left.hash)
+               flags = append(flags, FlagAssist)
+       }
+
+       if rightFind {
+               hashes = append(hashes, rightHashes...)
+               flags = append(flags, rightFlags...)
+       } else {
+               hashes = append(hashes, &node.right.hash)
+               flags = append(flags, FlagAssist)
+       }
+       return hashes, flags
+}
+
+func getMerkleTreeProof(rawDatas []merkleNode, relatedRawDatas []merkleNode) ([]*bc.Hash, []uint8) {
+       merkleTree := buildMerkleTree(rawDatas)
+       if merkleTree == nil {
+               return []*bc.Hash{}, []uint8{}
+       }
+       merkleHashSet := set.New()
+       for _, data := range relatedRawDatas {
+               merkleHash := leafMerkleHash(data)
+               merkleHashSet.Add(merkleHash.String())
+       }
+       if merkleHashSet.Size() == 0 {
+               return []*bc.Hash{&merkleTree.hash}, []uint8{FlagAssist}
+       }
+       return merkleTree.getMerkleTreeProof(merkleHashSet)
+}
+
+func (node *merkleTreeNode) getMerkleTreeProofByFlags(flagList *list.List) []*bc.Hash {
+       var hashes []*bc.Hash
+
+       if flagList.Len() == 0 {
+               return hashes
+       }
+       flagEle := flagList.Front()
+       flag := flagEle.Value.(uint8)
+       flagList.Remove(flagEle)
+
+       if flag == FlagTxLeaf || flag == FlagAssist {
+               hashes = append(hashes, &node.hash)
+               return hashes
+       }
+       if node.left != nil {
+               leftHashes := node.left.getMerkleTreeProofByFlags(flagList)
+               hashes = append(hashes, leftHashes...)
+       }
+       if node.right != nil {
+               rightHashes := node.right.getMerkleTreeProofByFlags(flagList)
+               hashes = append(hashes, rightHashes...)
+       }
+       return hashes
+}
+
+func getMerkleTreeProofByFlags(rawDatas []merkleNode, flagList *list.List) []*bc.Hash {
+       tree := buildMerkleTree(rawDatas)
+       return tree.getMerkleTreeProofByFlags(flagList)
+}
+
+// GetTxMerkleTreeProof return a proof of merkle tree, which used to proof the transaction does
+// exist in the merkle tree
+func GetTxMerkleTreeProof(txs []*Tx, relatedTxs []*Tx) ([]*bc.Hash, []uint8) {
+       var rawDatas []merkleNode
+       var relatedRawDatas []merkleNode
+       for _, tx := range txs {
+               rawDatas = append(rawDatas, &tx.ID)
+       }
+       for _, relatedTx := range relatedTxs {
+               relatedRawDatas = append(relatedRawDatas, &relatedTx.ID)
+       }
+       return getMerkleTreeProof(rawDatas, relatedRawDatas)
+}
+
+// GetStatusMerkleTreeProof return a proof of merkle tree, which used to proof the status of transaction is valid
+func GetStatusMerkleTreeProof(statuses []*bc.TxVerifyResult, flags []uint8) []*bc.Hash {
+       var rawDatas []merkleNode
+       for _, status := range statuses {
+               rawDatas = append(rawDatas, status)
+       }
+       flagList := list.New()
+       for _, flag := range flags {
+               flagList.PushBack(flag)
+       }
+       return getMerkleTreeProofByFlags(rawDatas, flagList)
+}
+
+// getMerkleRootByProof caculate the merkle root hash according to the proof
+func getMerkleRootByProof(hashList *list.List, flagList *list.List, merkleHashes *list.List) bc.Hash {
+       if flagList.Len() == 0 || hashList.Len() == 0 {
+               return bc.EmptyStringHash
+       }
+       flagEle := flagList.Front()
+       flag := flagEle.Value.(uint8)
+       flagList.Remove(flagEle)
+       switch flag {
+       case FlagAssist:
+               {
+                       hash := hashList.Front()
+                       hashList.Remove(hash)
+                       return hash.Value.(bc.Hash)
+               }
+       case FlagTxLeaf:
+               {
+                       if merkleHashes.Len() == 0 {
+                               return bc.EmptyStringHash
+                       }
+                       hashEle := hashList.Front()
+                       hash := hashEle.Value.(bc.Hash)
+                       relatedHashEle := merkleHashes.Front()
+                       relatedHash := relatedHashEle.Value.(bc.Hash)
+                       if hash == relatedHash {
+                               hashList.Remove(hashEle)
+                               merkleHashes.Remove(relatedHashEle)
+                               return hash
+                       }
+               }
+       case FlagTxParent:
+               {
+                       leftHash := getMerkleRootByProof(hashList, flagList, merkleHashes)
+                       rightHash := getMerkleRootByProof(hashList, flagList, merkleHashes)
+                       hash := interiorMerkleHash(&leftHash, &rightHash)
+                       return hash
+               }
+       }
+       return bc.EmptyStringHash
+}
+
+func newMerkleTreeNode(merkleHash bc.Hash, left *merkleTreeNode, right *merkleTreeNode) *merkleTreeNode {
+       return &merkleTreeNode{
+               hash:  merkleHash,
+               left:  left,
+               right: right,
+       }
+}
+
+// ValidateMerkleTreeProof caculate the merkle root according to the hash of node and the flags
+// only if the merkle root by caculated equals to the specify merkle root, and the merkle tree
+// contains all of the related raw datas, the validate result will be true.
+func validateMerkleTreeProof(hashes []*bc.Hash, flags []uint8, relatedNodes []merkleNode, merkleRoot bc.Hash) bool {
+       merkleHashes := list.New()
+       for _, relatedNode := range relatedNodes {
+               merkleHashes.PushBack(leafMerkleHash(relatedNode))
+       }
+       hashList := list.New()
+       for _, hash := range hashes {
+               hashList.PushBack(*hash)
+       }
+       flagList := list.New()
+       for _, flag := range flags {
+               flagList.PushBack(flag)
+       }
+       root := getMerkleRootByProof(hashList, flagList, merkleHashes)
+       return root == merkleRoot && merkleHashes.Len() == 0
+}
+
+// ValidateTxMerkleTreeProof validate the merkle tree of transactions
+func ValidateTxMerkleTreeProof(hashes []*bc.Hash, flags []uint8, relatedHashes []*bc.Hash, merkleRoot bc.Hash) bool {
+       var relatedNodes []merkleNode
+       for _, hash := range relatedHashes {
+               relatedNodes = append(relatedNodes, hash)
+       }
+       return validateMerkleTreeProof(hashes, flags, relatedNodes, merkleRoot)
+}
+
+// ValidateStatusMerkleTreeProof validate the merkle tree of transaction status
+func ValidateStatusMerkleTreeProof(hashes []*bc.Hash, flags []uint8, relatedStatus []*bc.TxVerifyResult, merkleRoot bc.Hash) bool {
+       var relatedNodes []merkleNode
+       for _, result := range relatedStatus {
+               relatedNodes = append(relatedNodes, result)
+       }
+       return validateMerkleTreeProof(hashes, flags, relatedNodes, merkleRoot)
+}
+
+// TxStatusMerkleRoot creates a merkle tree from a slice of bc.TxVerifyResult
+func TxStatusMerkleRoot(tvrs []*bc.TxVerifyResult) (root bc.Hash, err error) {
+       nodes := []merkleNode{}
+       for _, tvr := range tvrs {
+               nodes = append(nodes, tvr)
+       }
+       return merkleRoot(nodes)
+}
+
+// TxMerkleRoot creates a merkle tree from a slice of transactions
+// and returns the root hash of the tree.
+func TxMerkleRoot(transactions []*bc.Tx) (root bc.Hash, err error) {
+       nodes := []merkleNode{}
+       for _, tx := range transactions {
+               nodes = append(nodes, &tx.ID)
+       }
+       return merkleRoot(nodes)
+}
+
+// prevPowerOfTwo returns the largest power of two that is smaller than a given number.
+// In other words, for some input n, the prevPowerOfTwo k is a power of two such that
+// k < n <= 2k. This is a helper function used during the calculation of a merkle tree.
+func prevPowerOfTwo(n int) int {
+       // If the number is a power of two, divide it by 2 and return.
+       if n&(n-1) == 0 {
+               return n / 2
+       }
+
+       // Otherwise, find the previous PoT.
+       exponent := uint(math.Log2(float64(n)))
+       return 1 << exponent // 2^exponent
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/merkle_test.go b/vendor/github.com/bytom/protocol/bc/types/merkle_test.go
new file mode 100644 (file)
index 0000000..deeb222
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/merkle_test.go
@@ -0,0 +1,489 @@
+package types
+
+import (
+       "encoding/hex"
+
+       "math/rand"
+       "testing"
+       "time"
+
+       "github.com/bytom/protocol/bc"
+       "github.com/bytom/protocol/vm"
+       "github.com/bytom/testutil"
+)
+
+func TestMerkleRoot(t *testing.T) {
+       cases := []struct {
+               witnesses [][][]byte
+               want      bc.Hash
+       }{{
+               witnesses: [][][]byte{
+                       {
+                               {1},
+                               []byte("00000"),
+                       },
+               },
+               want: testutil.MustDecodeHash("fe34dbd5da0ce3656f423fd7aad7fc7e879353174d33a6446c2ed0e3f3512101"),
+       }, {
+               witnesses: [][][]byte{
+                       {
+                               {1},
+                               []byte("000000"),
+                       },
+                       {
+                               {1},
+                               []byte("111111"),
+                       },
+               },
+               want: testutil.MustDecodeHash("0e4b4c1af18b8f59997804d69f8f66879ad5e30027346ee003ff7c7a512e5554"),
+       }, {
+               witnesses: [][][]byte{
+                       {
+                               {1},
+                               []byte("000000"),
+                       },
+                       {
+                               {2},
+                               []byte("111111"),
+                               []byte("222222"),
+                       },
+               },
+               want: testutil.MustDecodeHash("0e4b4c1af18b8f59997804d69f8f66879ad5e30027346ee003ff7c7a512e5554"),
+       }}
+
+       for _, c := range cases {
+               var txs []*bc.Tx
+               for _, wit := range c.witnesses {
+                       txs = append(txs, NewTx(TxData{
+                               Inputs: []*TxInput{
+                                       &TxInput{
+                                               AssetVersion: 1,
+                                               TypedInput: &SpendInput{
+                                                       Arguments: wit,
+                                                       SpendCommitment: SpendCommitment{
+                                                               AssetAmount: bc.AssetAmount{
+                                                                       AssetId: &bc.AssetID{V0: 0},
+                                                               },
+                                                       },
+                                               },
+                                       },
+                               },
+                       }).Tx)
+               }
+               got, err := TxMerkleRoot(txs)
+               if err != nil {
+                       t.Fatalf("unexpected error %s", err)
+               }
+               if got != c.want {
+                       t.Log("witnesses", c.witnesses)
+                       t.Errorf("got merkle root = %x want %x", got.Bytes(), c.want.Bytes())
+               }
+       }
+}
+
+func TestMerkleRootRealTx(t *testing.T) {
+       rawTxs := []string{
+               "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",
+               "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",
+               "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",
+               "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",
+               "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",
+       }
+       wantMerkleRoot := "0f07b8a453771c2dc628f3895ebb33fea82a8de42e11aa588bec26419af22065"
+
+       var txs []*bc.Tx
+       for _, rawTx := range rawTxs {
+               tx := Tx{}              
+               if err := tx.UnmarshalText([]byte(rawTx)); err != nil {
+                       t.Fatal(err)
+               }
+
+               txs = append(txs, tx.Tx)
+       }
+
+       gotMerkleRoot, err := TxMerkleRoot(txs)
+       if err != nil {
+               t.Fatal(err)
+       }
+
+       if wantMerkleRoot != gotMerkleRoot.String() {
+               t.Errorf("got merkle root:%s, want merkle root:%s", gotMerkleRoot.String(), wantMerkleRoot)
+       }
+}
+
+func TestDuplicateLeaves(t *testing.T) {
+       trueProg := []byte{byte(vm.OP_TRUE)}
+       assetID := bc.ComputeAssetID(trueProg, 1, &bc.EmptyStringHash)
+       txs := make([]*bc.Tx, 6)
+       for i := uint64(0); i < 6; i++ {
+               now := []byte(time.Now().String())
+               txs[i] = NewTx(TxData{
+                       Version: 1,
+                       Inputs:  []*TxInput{NewIssuanceInput(now, i, trueProg, nil, nil)},
+                       Outputs: []*TxOutput{NewTxOutput(assetID, i, trueProg)},
+               }).Tx
+       }
+
+       // first, get the root of an unbalanced tree
+       txns := []*bc.Tx{txs[5], txs[4], txs[3], txs[2], txs[1], txs[0]}
+       root1, err := TxMerkleRoot(txns)
+       if err != nil {
+               t.Fatalf("unexpected error %s", err)
+       }
+
+       // now, get the root of a balanced tree that repeats leaves 0 and 1
+       txns = []*bc.Tx{txs[5], txs[4], txs[3], txs[2], txs[1], txs[0], txs[1], txs[0]}
+       root2, err := TxMerkleRoot(txns)
+       if err != nil {
+               t.Fatalf("unexpected error %s", err)
+       }
+
+       if root1 == root2 {
+               t.Error("forged merkle tree by duplicating some leaves")
+       }
+}
+
+func TestAllDuplicateLeaves(t *testing.T) {
+       trueProg := []byte{byte(vm.OP_TRUE)}
+       assetID := bc.ComputeAssetID(trueProg, 1, &bc.EmptyStringHash)
+       now := []byte(time.Now().String())
+       issuanceInp := NewIssuanceInput(now, 1, trueProg, nil, nil)
+
+       tx := NewTx(TxData{
+               Version: 1,
+               Inputs:  []*TxInput{issuanceInp},
+               Outputs: []*TxOutput{NewTxOutput(assetID, 1, trueProg)},
+       }).Tx
+       tx1, tx2, tx3, tx4, tx5, tx6 := tx, tx, tx, tx, tx, tx
+
+       // first, get the root of an unbalanced tree
+       txs := []*bc.Tx{tx6, tx5, tx4, tx3, tx2, tx1}
+       root1, err := TxMerkleRoot(txs)
+       if err != nil {
+               t.Fatalf("unexpected error %s", err)
+       }
+
+       // now, get the root of a balanced tree that repeats leaves 5 and 6
+       txs = []*bc.Tx{tx6, tx5, tx6, tx5, tx4, tx3, tx2, tx1}
+       root2, err := TxMerkleRoot(txs)
+       if err != nil {
+               t.Fatalf("unexpected error %s", err)
+       }
+
+       if root1 == root2 {
+               t.Error("forged merkle tree with all duplicate leaves")
+       }
+}
+
+func TestTxMerkleProof(t *testing.T) {
+       cases := []struct {
+               txCount          int
+               relatedTxIndexes []int
+               expectHashLen    int
+               expectFlags      []uint8
+       }{
+               {
+                       txCount:          10,
+                       relatedTxIndexes: []int{0, 3, 7, 8},
+                       expectHashLen:    9,
+                       expectFlags:      []uint8{1, 1, 1, 1, 2, 0, 1, 0, 2, 1, 0, 1, 0, 2, 1, 2, 0},
+               },
+               {
+                       txCount:          10,
+                       relatedTxIndexes: []int{},
+                       expectHashLen:    1,
+                       expectFlags:      []uint8{0},
+               },
+               {
+                       txCount:          1,
+                       relatedTxIndexes: []int{0},
+                       expectHashLen:    1,
+                       expectFlags:      []uint8{2},
+               },
+               {
+                       txCount:          19,
+                       relatedTxIndexes: []int{1, 3, 5, 7, 11, 15},
+                       expectHashLen:    15,
+                       expectFlags:      []uint8{1, 1, 1, 1, 1, 0, 2, 1, 0, 2, 1, 1, 0, 2, 1, 0, 2, 1, 1, 0, 1, 0, 2, 1, 0, 1, 0, 2, 0},
+               },
+       }
+       for _, c := range cases {
+               txs, bcTxs := mockTransactions(c.txCount)
+
+               var nodes []merkleNode
+               for _, tx := range txs {
+                       nodes = append(nodes, tx.ID)
+               }
+               tree := buildMerkleTree(nodes)
+               root, err := TxMerkleRoot(bcTxs)
+               if err != nil {
+                       t.Fatalf("unexpected error %s", err)
+               }
+               if tree.hash != root {
+                       t.Error("build tree fail")
+               }
+
+               var relatedTx []*Tx
+               for _, index := range c.relatedTxIndexes {
+                       relatedTx = append(relatedTx, txs[index])
+               }
+               proofHashes, flags := GetTxMerkleTreeProof(txs, relatedTx)
+               if !testutil.DeepEqual(flags, c.expectFlags) {
+                       t.Error("The flags is not equals expect flags", flags, c.expectFlags)
+               }
+               if len(proofHashes) != c.expectHashLen {
+                       t.Error("The length proof hashes is not equals expect length")
+               }
+               var ids []*bc.Hash
+               for _, tx := range relatedTx {
+                       ids = append(ids, &tx.ID)
+               }
+               if !ValidateTxMerkleTreeProof(proofHashes, flags, ids, root) {
+                       t.Error("Merkle tree validate fail")
+               }
+       }
+}
+
+func TestStatusMerkleProof(t *testing.T) {
+       cases := []struct {
+               statusCount    int
+               relatedIndexes []int
+               flags          []uint8
+               expectHashLen  int
+       }{
+               {
+                       statusCount:    10,
+                       relatedIndexes: []int{0, 3, 7, 8},
+                       flags:          []uint8{1, 1, 1, 1, 2, 0, 1, 0, 2, 1, 0, 1, 0, 2, 1, 2, 0},
+                       expectHashLen:  9,
+               },
+               {
+                       statusCount:    10,
+                       relatedIndexes: []int{},
+                       flags:          []uint8{0},
+                       expectHashLen:  1,
+               },
+               {
+                       statusCount:    1,
+                       relatedIndexes: []int{0},
+                       flags:          []uint8{2},
+                       expectHashLen:  1,
+               },
+               {
+                       statusCount:    19,
+                       relatedIndexes: []int{1, 3, 5, 7, 11, 15},
+                       flags:          []uint8{1, 1, 1, 1, 1, 0, 2, 1, 0, 2, 1, 1, 0, 2, 1, 0, 2, 1, 1, 0, 1, 0, 2, 1, 0, 1, 0, 2, 0},
+                       expectHashLen:  15,
+               },
+       }
+       for _, c := range cases {
+               statuses := mockStatuses(c.statusCount)
+               var relatedStatuses []*bc.TxVerifyResult
+               for _, index := range c.relatedIndexes {
+                       relatedStatuses = append(relatedStatuses, statuses[index])
+               }
+               hashes := GetStatusMerkleTreeProof(statuses, c.flags)
+               if len(hashes) != c.expectHashLen {
+                       t.Error("The length proof hashes is not equals expect length")
+               }
+               root, _ := TxStatusMerkleRoot(statuses)
+               if !ValidateStatusMerkleTreeProof(hashes, c.flags, relatedStatuses, root) {
+                       t.Error("Merkle tree validate fail")
+               }
+       }
+}
+
+func TestUglyValidateTxMerkleProof(t *testing.T) {
+       cases := []struct {
+               hashes        []string
+               flags         []uint8
+               relatedHashes []string
+               root          string
+               expectResult  bool
+       }{
+               {
+                       hashes:        []string{},
+                       flags:         []uint8{},
+                       relatedHashes: []string{},
+                       root:          "",
+                       expectResult:  false,
+               },
+               {
+                       hashes:        []string{},
+                       flags:         []uint8{1, 1, 1, 1, 2, 0, 1, 0, 2, 1, 0, 1, 0, 2, 1, 2, 0},
+                       relatedHashes: []string{},
+                       root:          "",
+                       expectResult:  false,
+               },
+               {
+                       hashes: []string{
+                               "0093370a8e19f8f131fd7e75c576615950d5672ee5e18c63f105a95bcab4332c",
+                               "c9b7779847fb7ab74cf4b1e7f4557133918faa2bc130042753417dfb62b12dfa",
+                       },
+                       flags:         []uint8{},
+                       relatedHashes: []string{},
+                       root:          "",
+                       expectResult:  false,
+               },
+               {
+                       hashes: []string{},
+                       flags:  []uint8{},
+                       relatedHashes: []string{
+                               "0093370a8e19f8f131fd7e75c576615950d5672ee5e18c63f105a95bcab4332c",
+                               "c9b7779847fb7ab74cf4b1e7f4557133918faa2bc130042753417dfb62b12dfa",
+                       },
+                       root:         "",
+                       expectResult: false,
+               },
+               {
+                       hashes: []string{},
+                       flags:  []uint8{1, 1, 0, 2, 1, 2, 1, 0, 1},
+                       relatedHashes: []string{
+                               "0093370a8e19f8f131fd7e75c576615950d5672ee5e18c63f105a95bcab4332c",
+                               "c9b7779847fb7ab74cf4b1e7f4557133918faa2bc130042753417dfb62b12dfa",
+                       },
+                       root: "281138e0a9ea19505844bd61a2f5843787035782c093da74d12b5fba73eeeb07",
+               },
+               {
+                       hashes: []string{
+                               "68f03ea2b02a21ad944d1a43ad6152a7fa6a7ed4101d59be62594dd30ef2a558",
+                       },
+                       flags: []uint8{},
+                       relatedHashes: []string{
+                               "0093370a8e19f8f131fd7e75c576615950d5672ee5e18c63f105a95bcab4332c",
+                               "c9b7779847fb7ab74cf4b1e7f4557133918faa2bc130042753417dfb62b12dfa",
+                       },
+                       root:         "281138e0a9ea19505844bd61a2f5843787035782c093da74d12b5fba73eeeb07",
+                       expectResult: false,
+               },
+               {
+                       hashes: []string{
+                               "8ec3ee7589f95eee9b534f71fcd37142bcc839a0dbfe78124df9663827b90c35",
+                               "011bd3380852b2946df507e0c6234222c559eec8f545e4bc58a89e960892259b",
+                               "c205988d9c864083421f1bdb95e6cf8b52070facfcc87e46a6e8197f5389fca2",
+                       },
+                       flags: []uint8{1, 1, 0, 2, 0},
+                       relatedHashes: []string{
+                               "504af455e328e7dd39bbc059529851946d54ee8b459b11b3aac4a0feeb474487",
+                       },
+                       root:         "aff81a46fe79204ef9007243f374d54104a59762b9f74d80d56b5291753db6fb",
+                       expectResult: true,
+               },
+               // flags and hashes is correct, but relatedHashes has hash that does not exist
+               {
+                       hashes: []string{
+                               "8ec3ee7589f95eee9b534f71fcd37142bcc839a0dbfe78124df9663827b90c35",
+                               "011bd3380852b2946df507e0c6234222c559eec8f545e4bc58a89e960892259b",
+                               "c205988d9c864083421f1bdb95e6cf8b52070facfcc87e46a6e8197f5389fca2",
+                       },
+                       flags: []uint8{1, 1, 0, 2, 0},
+                       relatedHashes: []string{
+                               "504af455e328e7dd39bbc059529851946d54ee8b459b11b3aac4a0feeb474487",
+                               "281138e0a9ea19505844bd61a2f5843787035782c093da74d12b5fba73eeeb07",
+                       },
+                       root:         "aff81a46fe79204ef9007243f374d54104a59762b9f74d80d56b5291753db6fb",
+                       expectResult: false,
+               },
+               // flags and hashes is correct, but relatedHashes is not enough
+               {
+                       hashes: []string{
+                               "8ec3ee7589f95eee9b534f71fcd37142bcc839a0dbfe78124df9663827b90c35",
+                               "011bd3380852b2946df507e0c6234222c559eec8f545e4bc58a89e960892259b",
+                               "c205988d9c864083421f1bdb95e6cf8b52070facfcc87e46a6e8197f5389fca2",
+                       },
+                       flags:         []uint8{1, 1, 0, 2, 0},
+                       relatedHashes: []string{},
+                       root:          "aff81a46fe79204ef9007243f374d54104a59762b9f74d80d56b5291753db6fb",
+                       expectResult:  false,
+               },
+               // flags is correct, but hashes has additional hash at the end
+               {
+                       hashes: []string{
+                               "8ec3ee7589f95eee9b534f71fcd37142bcc839a0dbfe78124df9663827b90c35",
+                               "011bd3380852b2946df507e0c6234222c559eec8f545e4bc58a89e960892259b",
+                               "c205988d9c864083421f1bdb95e6cf8b52070facfcc87e46a6e8197f5389fca2",
+                               "5a06c90136e81c0f9cad29725e69edc6d21bd6fb0641265f9c4b6bb6840b37dd",
+                       },
+                       flags: []uint8{1, 1, 0, 2, 0},
+                       relatedHashes: []string{
+                               "504af455e328e7dd39bbc059529851946d54ee8b459b11b3aac4a0feeb474487",
+                       },
+                       root:         "aff81a46fe79204ef9007243f374d54104a59762b9f74d80d56b5291753db6fb",
+                       expectResult: true,
+               },
+       }
+
+       for _, c := range cases {
+               var hashes, relatedHashes []*bc.Hash
+               var hashBytes, rootBytes [32]byte
+               var err error
+               for _, hashStr := range c.hashes {
+                       if hashBytes, err = convertHashStr2Bytes(hashStr); err != nil {
+                               t.Fatal(err)
+                       }
+
+                       hash := bc.NewHash(hashBytes)
+                       hashes = append(hashes, &hash)
+               }
+               for _, hashStr := range c.relatedHashes {
+                       if hashBytes, err = convertHashStr2Bytes(hashStr); err != nil {
+                               t.Fatal(err)
+                       }
+
+                       hash := bc.NewHash(hashBytes)
+                       relatedHashes = append(relatedHashes, &hash)
+               }
+               if rootBytes, err = convertHashStr2Bytes(c.root); err != nil {
+                       t.Fatal(err)
+               }
+
+               root := bc.NewHash(rootBytes)
+               if ValidateTxMerkleTreeProof(hashes, c.flags, relatedHashes, root) != c.expectResult {
+                       t.Error("Validate merkle tree proof fail")
+               }
+       }
+}
+
+func convertHashStr2Bytes(hashStr string) ([32]byte, error) {
+       var result [32]byte
+       hashBytes, err := hex.DecodeString(hashStr)
+       if err != nil {
+               return result, err
+       }
+       copy(result[:], hashBytes)
+       return result, nil
+}
+
+func mockTransactions(txCount int) ([]*Tx, []*bc.Tx) {
+       var txs []*Tx
+       var bcTxs []*bc.Tx
+       trueProg := []byte{byte(vm.OP_TRUE)}
+       assetID := bc.ComputeAssetID(trueProg, 1, &bc.EmptyStringHash)
+       for i := 0; i < txCount; i++ {
+               now := []byte(time.Now().String())
+               issuanceInp := NewIssuanceInput(now, 1, trueProg, nil, nil)
+               tx := NewTx(TxData{
+                       Version: 1,
+                       Inputs:  []*TxInput{issuanceInp},
+                       Outputs: []*TxOutput{NewTxOutput(assetID, 1, trueProg)},
+               })
+               txs = append(txs, tx)
+               bcTxs = append(bcTxs, tx.Tx)
+       }
+       return txs, bcTxs
+}
+
+func mockStatuses(statusCount int) []*bc.TxVerifyResult {
+       var statuses []*bc.TxVerifyResult
+       for i := 0; i < statusCount; i++ {
+               status := &bc.TxVerifyResult{}
+               fail := rand.Intn(2)
+               if fail == 0 {
+                       status.StatusFail = true
+               } else {
+                       status.StatusFail = false
+               }
+               statuses = append(statuses, status)
+       }
+       return statuses
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/output_commitment.go b/vendor/github.com/bytom/protocol/bc/types/output_commitment.go
new file mode 100644 (file)
index 0000000..413a27b
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/output_commitment.go
@@ -0,0 +1,72 @@
+package types
+
+import (
+       "fmt"
+       "io"
+
+       "github.com/bytom/crypto/sha3pool"
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/errors"
+       "github.com/bytom/protocol/bc"
+)
+
+// OutputCommitment contains the commitment data for a transaction output.
+type OutputCommitment struct {
+       bc.AssetAmount
+       VMVersion      uint64
+       ControlProgram []byte
+}
+
+func (oc *OutputCommitment) writeExtensibleString(w io.Writer, suffix []byte, assetVersion uint64) error {
+       _, err := blockchain.WriteExtensibleString(w, suffix, func(w io.Writer) error {
+               return oc.writeContents(w, suffix, assetVersion)
+       })
+       return err
+}
+
+func (oc *OutputCommitment) writeContents(w io.Writer, suffix []byte, assetVersion uint64) (err error) {
+       if assetVersion == 1 {
+               if _, err = oc.AssetAmount.WriteTo(w); err != nil {
+                       return errors.Wrap(err, "writing asset amount")
+               }
+               if _, err = blockchain.WriteVarint63(w, oc.VMVersion); err != nil {
+                       return errors.Wrap(err, "writing vm version")
+               }
+               if _, err = blockchain.WriteVarstr31(w, oc.ControlProgram); err != nil {
+                       return errors.Wrap(err, "writing control program")
+               }
+       }
+       if len(suffix) > 0 {
+               _, err = w.Write(suffix)
+       }
+       return errors.Wrap(err, "writing suffix")
+}
+
+func (oc *OutputCommitment) readFrom(r *blockchain.Reader, assetVersion uint64) (suffix []byte, err error) {
+       return blockchain.ReadExtensibleString(r, func(r *blockchain.Reader) error {
+               if assetVersion == 1 {
+                       if err := oc.AssetAmount.ReadFrom(r); err != nil {
+                               return errors.Wrap(err, "reading asset+amount")
+                       }
+                       oc.VMVersion, err = blockchain.ReadVarint63(r)
+                       if err != nil {
+                               return errors.Wrap(err, "reading VM version")
+                       }
+                       if oc.VMVersion != 1 {
+                               return fmt.Errorf("unrecognized VM version %d for asset version 1", oc.VMVersion)
+                       }
+                       oc.ControlProgram, err = blockchain.ReadVarstr31(r)
+                       return errors.Wrap(err, "reading control program")
+               }
+               return nil
+       })
+}
+
+// Hash convert suffix && assetVersion to bc.Hash
+func (oc *OutputCommitment) Hash(suffix []byte, assetVersion uint64) (outputhash bc.Hash) {
+       h := sha3pool.Get256()
+       defer sha3pool.Put256(h)
+       oc.writeExtensibleString(h, suffix, assetVersion)
+       outputhash.ReadFrom(h)
+       return outputhash
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/output_commitment_test.go b/vendor/github.com/bytom/protocol/bc/types/output_commitment_test.go
new file mode 100644 (file)
index 0000000..bf26c7d
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/output_commitment_test.go
@@ -0,0 +1,59 @@
+package types
+
+import (
+       "bytes"
+       "encoding/hex"
+       "testing"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/protocol/bc"
+       "github.com/bytom/testutil"
+)
+
+func TestReadWriteOutputCommitment(t *testing.T) {
+       btmAssetID := testutil.MustDecodeAsset("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
+       cases := []struct {
+               oc           *OutputCommitment
+               encodeString string
+       }{
+               {
+                       oc: &OutputCommitment{
+                               AssetAmount:    bc.AssetAmount{AssetId: &btmAssetID, Amount: 100},
+                               VMVersion:      1,
+                               ControlProgram: testutil.MustDecodeHexString("00140876db6ca8f4542a836f0edd42b87d095d081182"),
+                       },
+                       encodeString: "39ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff64011600140876db6ca8f4542a836f0edd42b87d095d081182",
+               },
+               {
+                       oc: &OutputCommitment{
+                               AssetAmount:    bc.AssetAmount{AssetId: &btmAssetID, Amount: 50},
+                               VMVersion:      1,
+                               ControlProgram: testutil.MustDecodeHexString("00148bf7800b2333afd8414d6e903d58c4908b9bbcc7"),
+                       },
+                       encodeString: "39ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff32011600148bf7800b2333afd8414d6e903d58c4908b9bbcc7",
+               },
+       }
+
+       for _, c := range cases {
+               buff := []byte{}
+               buffer := bytes.NewBuffer(buff)
+               if err := c.oc.writeExtensibleString(buffer, nil, 1); err != nil {
+                       t.Fatal(err)
+               }
+
+               got := hex.EncodeToString(buffer.Bytes())
+               if got != c.encodeString {
+                       t.Errorf("got:%s, want:%s", got, c.encodeString)
+               }
+
+               oc := &OutputCommitment{}
+               _, err := oc.readFrom(blockchain.NewReader(buffer.Bytes()), 1)
+               if err != nil {
+                       t.Fatal(err)
+               }
+
+               if !testutil.DeepEqual(*oc, *c.oc) {
+                       t.Errorf("got:%v, want:%v", *oc, *c.oc)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/spend.go b/vendor/github.com/bytom/protocol/bc/types/spend.go
new file mode 100644 (file)
index 0000000..2fb26cd
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/spend.go
@@ -0,0 +1,36 @@
+package types
+
+import (
+       "github.com/bytom/protocol/bc"
+)
+
+// SpendInput satisfies the TypedInput interface and represents a spend transaction.
+type SpendInput struct {
+       SpendCommitmentSuffix []byte   // The unconsumed suffix of the output commitment
+       Arguments             [][]byte // Witness
+       SpendCommitment
+}
+
+// NewSpendInput create a new SpendInput struct.
+func NewSpendInput(arguments [][]byte, sourceID bc.Hash, assetID bc.AssetID, amount, sourcePos uint64, controlProgram []byte) *TxInput {
+       sc := SpendCommitment{
+               AssetAmount: bc.AssetAmount{
+                       AssetId: &assetID,
+                       Amount:  amount,
+               },
+               SourceID:       sourceID,
+               SourcePosition: sourcePos,
+               VMVersion:      1,
+               ControlProgram: controlProgram,
+       }
+       return &TxInput{
+               AssetVersion: 1,
+               TypedInput: &SpendInput{
+                       SpendCommitment: sc,
+                       Arguments:       arguments,
+               },
+       }
+}
+
+// InputType is the interface function for return the input type.
+func (si *SpendInput) InputType() uint8 { return SpendInputType }

diff --git a/vendor/github.com/bytom/protocol/bc/types/spend_commitment.go b/vendor/github.com/bytom/protocol/bc/types/spend_commitment.go
new file mode 100644 (file)
index 0000000..08a35ea
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/spend_commitment.go
@@ -0,0 +1,77 @@
+package types
+
+import (
+       "fmt"
+       "io"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/errors"
+       "github.com/bytom/protocol/bc"
+)
+
+// SpendCommitment contains the commitment data for a transaction output.
+type SpendCommitment struct {
+       bc.AssetAmount
+       SourceID       bc.Hash
+       SourcePosition uint64
+       VMVersion      uint64
+       ControlProgram []byte
+}
+
+func (sc *SpendCommitment) writeExtensibleString(w io.Writer, suffix []byte, assetVersion uint64) error {
+       _, err := blockchain.WriteExtensibleString(w, suffix, func(w io.Writer) error {
+               return sc.writeContents(w, suffix, assetVersion)
+       })
+       return err
+}
+
+func (sc *SpendCommitment) writeContents(w io.Writer, suffix []byte, assetVersion uint64) (err error) {
+       if assetVersion == 1 {
+               if _, err = sc.SourceID.WriteTo(w); err != nil {
+                       return errors.Wrap(err, "writing source id")
+               }
+               if _, err = sc.AssetAmount.WriteTo(w); err != nil {
+                       return errors.Wrap(err, "writing asset amount")
+               }
+               if _, err = blockchain.WriteVarint63(w, sc.SourcePosition); err != nil {
+                       return errors.Wrap(err, "writing source position")
+               }
+               if _, err = blockchain.WriteVarint63(w, sc.VMVersion); err != nil {
+                       return errors.Wrap(err, "writing vm version")
+               }
+               if _, err = blockchain.WriteVarstr31(w, sc.ControlProgram); err != nil {
+                       return errors.Wrap(err, "writing control program")
+               }
+       }
+       if len(suffix) > 0 {
+               _, err = w.Write(suffix)
+       }
+       return errors.Wrap(err, "writing suffix")
+}
+
+func (sc *SpendCommitment) readFrom(r *blockchain.Reader, assetVersion uint64) (suffix []byte, err error) {
+       return blockchain.ReadExtensibleString(r, func(r *blockchain.Reader) error {
+               if assetVersion == 1 {
+                       if _, err := sc.SourceID.ReadFrom(r); err != nil {
+                               return errors.Wrap(err, "reading source id")
+                       }
+                       if err = sc.AssetAmount.ReadFrom(r); err != nil {
+                               return errors.Wrap(err, "reading asset+amount")
+                       }
+                       if sc.SourcePosition, err = blockchain.ReadVarint63(r); err != nil {
+                               return errors.Wrap(err, "reading source position")
+                       }
+                       if sc.VMVersion, err = blockchain.ReadVarint63(r); err != nil {
+                               return errors.Wrap(err, "reading VM version")
+                       }
+                       if sc.VMVersion != 1 {
+                               return fmt.Errorf("unrecognized VM version %d for asset version 1", sc.VMVersion)
+                       }
+                       if sc.ControlProgram, err = blockchain.ReadVarstr31(r); err != nil {
+                               return errors.Wrap(err, "reading control program")
+                       }
+                       return nil
+               }
+               return nil
+       })
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/spend_commitment_test.go b/vendor/github.com/bytom/protocol/bc/types/spend_commitment_test.go
new file mode 100644 (file)
index 0000000..73cf114
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/spend_commitment_test.go
@@ -0,0 +1,69 @@
+package types
+
+import (
+       "bytes"
+       "encoding/hex"
+       "testing"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/protocol/bc"
+       "github.com/bytom/testutil"
+)
+
+func TestReadWriteSpendCommitment(t *testing.T) {
+       btmAssetID := testutil.MustDecodeAsset("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
+       cases := []struct {
+               sc           *SpendCommitment
+               encodeString string
+       }{
+               {
+                       sc: &SpendCommitment{
+                               AssetAmount: bc.AssetAmount{
+                                       AssetId: &btmAssetID,
+                                       Amount:  100,
+                               },
+                               SourceID:       testutil.MustDecodeHash("3160fb24f97e06ad5a9717cd47fe2b65c7409903216b39120b10550282b20e99"),
+                               SourcePosition: 0,
+                               VMVersion:      1,
+                               ControlProgram: testutil.MustDecodeHexString("0014d927424f4e8c242460b538f04c2676b97842e9a7"),
+                       },
+                       encodeString: "5a3160fb24f97e06ad5a9717cd47fe2b65c7409903216b39120b10550282b20e99ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff640001160014d927424f4e8c242460b538f04c2676b97842e9a7",
+               },
+               {
+                       sc: &SpendCommitment{
+                               AssetAmount: bc.AssetAmount{
+                                       AssetId: &btmAssetID,
+                                       Amount:  999,
+                               },
+                               SourceID:       testutil.MustDecodeHash("4b5cb973f5bef4eadde4c89b92ee73312b940e84164da0594149554cc8a2adea"),
+                               SourcePosition: 2,
+                               VMVersion:      1,
+                               ControlProgram: testutil.MustDecodeHexString("001418549d84daf53344d32563830c7cf979dc19d5c0"),
+                       },
+                       encodeString: "5b4b5cb973f5bef4eadde4c89b92ee73312b940e84164da0594149554cc8a2adeaffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe707020116001418549d84daf53344d32563830c7cf979dc19d5c0",
+               },
+       }
+
+       for _, c := range cases {
+               buff := []byte{}
+               buffer := bytes.NewBuffer(buff)
+               if err := c.sc.writeExtensibleString(buffer, nil, 1); err != nil {
+                       t.Fatal(err)
+               }
+
+               got := hex.EncodeToString(buffer.Bytes())
+               if got != c.encodeString {
+                       t.Errorf("test write spend commitment fail, got:%s, want:%s", got, c.encodeString)
+               }
+
+               sc := &SpendCommitment{}
+               _, err := sc.readFrom(blockchain.NewReader(buffer.Bytes()), 1)
+               if err != nil {
+                       t.Fatal(err)
+               }
+
+               if !testutil.DeepEqual(*sc, *c.sc) {
+                       t.Errorf("test read spend commitment fail, got:%v, want:%v", *sc, *c.sc)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/spend_test.go b/vendor/github.com/bytom/protocol/bc/types/spend_test.go
new file mode 100644 (file)
index 0000000..f451a5e
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/spend_test.go
@@ -0,0 +1,70 @@
+package types
+
+import (
+       "bytes"
+       "encoding/hex"
+       "strings"
+       "testing"
+
+       "github.com/davecgh/go-spew/spew"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/protocol/bc"
+       "github.com/bytom/testutil"
+)
+
+func TestSerializationSpendCommitment(t *testing.T) {
+       assetID := testutil.MustDecodeAsset("81756fdab39a17163b0ce582ee4ee256fb4d1e156c692b997d608a42ecb38d47")
+       sc := &SpendCommitment{
+               AssetAmount: bc.AssetAmount{
+                       AssetId: &assetID,
+                       Amount:  254354,
+               },
+               SourceID:       testutil.MustDecodeHash("bef8ff450b877df84174ac5c279fc97da0f507ffe7beef7badf116ea9e2ff041"),
+               SourcePosition: 3,
+               VMVersion:      1,
+               ControlProgram: []byte("TestSerializationSpendCommitment"),
+       }
+
+       wantHex := strings.Join([]string{
+               "66", // serialization length
+               "bef8ff450b877df84174ac5c279fc97da0f507ffe7beef7badf116ea9e2ff041", // sourceID
+               "81756fdab39a17163b0ce582ee4ee256fb4d1e156c692b997d608a42ecb38d47", // assetID
+               "92c30f", // amount
+               "03",     // position
+               "01",     // version
+               "20",     // control program length
+               "5465737453657269616c697a6174696f6e5370656e64436f6d6d69746d656e74", // control program
+       }, "")
+
+       // Test convert struct to hex
+       var buffer bytes.Buffer
+       suffix := []byte{}
+       if err := sc.writeExtensibleString(&buffer, suffix, 1); err != nil {
+               t.Fatal(err)
+       } else if len(suffix) != 0 {
+               t.Errorf("spend commitment write to got garbage hex left")
+       }
+
+       gotHex := hex.EncodeToString(buffer.Bytes())
+       if gotHex != wantHex {
+               t.Errorf("serialization bytes = %s want %s", gotHex, wantHex)
+       }
+
+       // Test convert hex to struct
+       var gotSC SpendCommitment
+       decodeHex, err := hex.DecodeString(wantHex)
+       if err != nil {
+               t.Fatal(err)
+       }
+
+       if getSuffix, err := gotSC.readFrom(blockchain.NewReader(decodeHex), 1); err != nil {
+               t.Fatal(err)
+       } else if len(getSuffix) != 0 {
+               t.Errorf("spend commitment read from got garbage hex left")
+       }
+
+       if !testutil.DeepEqual(*sc, gotSC) {
+               t.Errorf("expected marshaled/unmarshaled spend commitment to be:\n%sgot:\n%s", spew.Sdump(*sc), spew.Sdump(gotSC))
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/transaction.go b/vendor/github.com/bytom/protocol/bc/types/transaction.go
new file mode 100644 (file)
index 0000000..765df5d
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/transaction.go
@@ -0,0 +1,184 @@
+package types
+
+import (
+       "bytes"
+       "encoding/hex"
+       "fmt"
+       "io"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/errors"
+       "github.com/bytom/protocol/bc"
+)
+
+const serRequired = 0x7 // Bit mask accepted serialization flag.
+
+// Tx holds a transaction along with its hash.
+type Tx struct {
+       TxData
+       *bc.Tx `json:"-"`
+}
+
+// NewTx returns a new Tx containing data and its hash. If you have already
+// computed the hash, use struct literal notation to make a Tx object directly.
+func NewTx(data TxData) *Tx {
+       return &Tx{
+               TxData: data,
+               Tx:     MapTx(&data),
+       }
+}
+
+// OutputID return the hash of the output position
+func (tx *Tx) OutputID(outputIndex int) *bc.Hash {
+       return tx.ResultIds[outputIndex]
+}
+
+// UnmarshalText fulfills the encoding.TextUnmarshaler interface.
+func (tx *Tx) UnmarshalText(p []byte) error {
+       if err := tx.TxData.UnmarshalText(p); err != nil {
+               return err
+       }
+
+       tx.Tx = MapTx(&tx.TxData)
+       return nil
+}
+
+// SetInputArguments sets the Arguments field in input n.
+func (tx *Tx) SetInputArguments(n uint32, args [][]byte) {
+       tx.Inputs[n].SetArguments(args)
+       id := tx.Tx.InputIDs[n]
+       e := tx.Entries[id]
+       switch e := e.(type) {
+       case *bc.Issuance:
+               e.WitnessArguments = args
+       case *bc.Spend:
+               e.WitnessArguments = args
+       }
+}
+
+// TxData encodes a transaction in the blockchain.
+type TxData struct {
+       Version        uint64
+       SerializedSize uint64
+       TimeRange      uint64
+       Inputs         []*TxInput
+       Outputs        []*TxOutput
+}
+
+// MarshalText fulfills the json.Marshaler interface.
+func (tx *TxData) MarshalText() ([]byte, error) {
+       var buf bytes.Buffer
+       if _, err := tx.WriteTo(&buf); err != nil {
+               return nil, err
+       }
+
+       b := make([]byte, hex.EncodedLen(buf.Len()))
+       hex.Encode(b, buf.Bytes())
+       return b, nil
+}
+
+// UnmarshalText fulfills the encoding.TextUnmarshaler interface.
+func (tx *TxData) UnmarshalText(p []byte) error {
+       b := make([]byte, hex.DecodedLen(len(p)))
+       if _, err := hex.Decode(b, p); err != nil {
+               return err
+       }
+
+       r := blockchain.NewReader(b)
+       if err := tx.readFrom(r); err != nil {
+               return err
+       }
+
+       if trailing := r.Len(); trailing > 0 {
+               return fmt.Errorf("trailing garbage (%d bytes)", trailing)
+       }
+       return nil
+}
+
+func (tx *TxData) readFrom(r *blockchain.Reader) (err error) {
+       startSerializedSize := r.Len()
+       var serflags [1]byte
+       if _, err = io.ReadFull(r, serflags[:]); err != nil {
+               return errors.Wrap(err, "reading serialization flags")
+       }
+       if serflags[0] != serRequired {
+               return fmt.Errorf("unsupported serflags %#x", serflags[0])
+       }
+
+       if tx.Version, err = blockchain.ReadVarint63(r); err != nil {
+               return errors.Wrap(err, "reading transaction version")
+       }
+       if tx.TimeRange, err = blockchain.ReadVarint63(r); err != nil {
+               return err
+       }
+
+       n, err := blockchain.ReadVarint31(r)
+       if err != nil {
+               return errors.Wrap(err, "reading number of transaction inputs")
+       }
+
+       for ; n > 0; n-- {
+               ti := new(TxInput)
+               if err = ti.readFrom(r); err != nil {
+                       return errors.Wrapf(err, "reading input %d", len(tx.Inputs))
+               }
+               tx.Inputs = append(tx.Inputs, ti)
+       }
+
+       n, err = blockchain.ReadVarint31(r)
+       if err != nil {
+               return errors.Wrap(err, "reading number of transaction outputs")
+       }
+
+       for ; n > 0; n-- {
+               to := new(TxOutput)
+               if err = to.readFrom(r); err != nil {
+                       return errors.Wrapf(err, "reading output %d", len(tx.Outputs))
+               }
+               tx.Outputs = append(tx.Outputs, to)
+       }
+       tx.SerializedSize = uint64(startSerializedSize - r.Len())
+       return nil
+}
+
+// WriteTo writes tx to w.
+func (tx *TxData) WriteTo(w io.Writer) (int64, error) {
+       ew := errors.NewWriter(w)
+       if err := tx.writeTo(ew, serRequired); err != nil {
+               return 0, err
+       }
+       return ew.Written(), ew.Err()
+}
+
+func (tx *TxData) writeTo(w io.Writer, serflags byte) error {
+       if _, err := w.Write([]byte{serflags}); err != nil {
+               return errors.Wrap(err, "writing serialization flags")
+       }
+       if _, err := blockchain.WriteVarint63(w, tx.Version); err != nil {
+               return errors.Wrap(err, "writing transaction version")
+       }
+       if _, err := blockchain.WriteVarint63(w, tx.TimeRange); err != nil {
+               return errors.Wrap(err, "writing transaction maxtime")
+       }
+
+       if _, err := blockchain.WriteVarint31(w, uint64(len(tx.Inputs))); err != nil {
+               return errors.Wrap(err, "writing tx input count")
+       }
+
+       for i, ti := range tx.Inputs {
+               if err := ti.writeTo(w); err != nil {
+                       return errors.Wrapf(err, "writing tx input %d", i)
+               }
+       }
+
+       if _, err := blockchain.WriteVarint31(w, uint64(len(tx.Outputs))); err != nil {
+               return errors.Wrap(err, "writing tx output count")
+       }
+
+       for i, to := range tx.Outputs {
+               if err := to.writeTo(w); err != nil {
+                       return errors.Wrapf(err, "writing tx output %d", i)
+               }
+       }
+       return nil
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/transaction_test.go b/vendor/github.com/bytom/protocol/bc/types/transaction_test.go
new file mode 100644 (file)
index 0000000..c3a7d4c
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/transaction_test.go
@@ -0,0 +1,335 @@
+package types
+
+import (
+       "bytes"
+       "encoding/hex"
+       "encoding/json"
+       "io/ioutil"
+       "strings"
+       "testing"
+
+       "github.com/davecgh/go-spew/spew"
+
+       "github.com/bytom/consensus"
+       "github.com/bytom/errors"
+       "github.com/bytom/protocol/bc"
+       "github.com/bytom/testutil"
+)
+
+func TestTransaction(t *testing.T) {
+       cases := []struct {
+               tx   *Tx
+               hex  string
+               hash bc.Hash
+       }{
+               {
+                       tx: NewTx(TxData{
+                               Version:        1,
+                               SerializedSize: uint64(5),
+                               Inputs:         nil,
+                               Outputs:        nil,
+                       }),
+                       hex: strings.Join([]string{
+                               "07", // serflags
+                               "01", // transaction version
+                               "00", // tx time range
+                               "00", // inputs count
+                               "00", // outputs count
+                       }, ""),
+                       hash: testutil.MustDecodeHash("8e88b9cb4615128c7209dff695f68b8de5b38648bf3d44d2d0e6a674848539c9"),
+               },
+               {
+                       tx: NewTx(TxData{
+                               Version:        1,
+                               SerializedSize: uint64(261),
+                               TimeRange:      654,
+                               Inputs: []*TxInput{
+                                       NewIssuanceInput([]byte("nonce"), 254354, []byte("issuanceProgram"), [][]byte{[]byte("arguments1"), []byte("arguments2")}, []byte("assetDefinition")),
+                                       NewSpendInput([][]byte{[]byte("arguments3"), []byte("arguments4")}, testutil.MustDecodeHash("fad5195a0c8e3b590b86a3c0a95e7529565888508aecca96e9aeda633002f409"), *consensus.BTMAssetID, 254354, 3, []byte("spendProgram")),
+                               },
+                               Outputs: []*TxOutput{
+                                       NewTxOutput(testutil.MustDecodeAsset("a69849e11add96ac7053aad22ba2349a4abf5feb0475a0afcadff4e128be76cf"), 254354, []byte("true")),
+                               },
+                       }),
+                       hex: strings.Join([]string{
+                               "07",         // serflags
+                               "01",         // transaction version
+                               "8e05",       // tx time range
+                               "02",         // inputs count
+                               "01",         // input 0: asset version
+                               "2a",         // input 0: serialization length
+                               "00",         // input 0: issuance type flag
+                               "05",         // input 0: nonce length
+                               "6e6f6e6365", // input 0: nonce
+                               "a69849e11add96ac7053aad22ba2349a4abf5feb0475a0afcadff4e128be76cf", // input 0: assetID
+                               "92c30f", // input 0: amount
+                               "38",     // input 0: input witness length
+                               "0f",     // input 0: asset definition length
+                               "6173736574446566696e6974696f6e", // input 0: asset definition
+                               "01", // input 0: vm version
+                               "0f", // input 0: issuanceProgram length
+                               "69737375616e636550726f6772616d", // input 0: issuance program
+                               "02", // input 0: argument array length
+                               "0a", // input 0: first argument length
+                               "617267756d656e747331", // input 0: first argument data
+                               "0a", // input 0: second argument length
+                               "617267756d656e747332", // input 0: second argument data
+                               "01", // input 1: asset version
+                               "54", // input 1: input commitment length
+                               "01", // input 1: spend type flag
+                               "52", // input 1: spend commitment length
+                               "fad5195a0c8e3b590b86a3c0a95e7529565888508aecca96e9aeda633002f409", // input 1: source id
+                               "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", // input 1: assetID
+                               "92c30f", // input 1: amount
+                               "03",     // input 1: source position
+                               "01",     // input 1: vm version
+                               "0c",     // input 1: spend program length
+                               "7370656e6450726f6772616d", // input 1: spend program
+                               "17", // input 1: witness length
+                               "02", // input 1: argument array length
+                               "0a", // input 1: first argument length
+                               "617267756d656e747333", // input 1: first argument data
+                               "0a", // input 1: second argument length
+                               "617267756d656e747334", // input 1: second argument data
+                               "01", // outputs count
+                               "01", // output 0: asset version
+                               "29", // output 0: serialization length
+                               "a69849e11add96ac7053aad22ba2349a4abf5feb0475a0afcadff4e128be76cf", // output 0: assetID
+                               "92c30f",   // output 0: amount
+                               "01",       // output 0: version
+                               "04",       // output 0: control program length
+                               "74727565", // output 0: control program
+                               "00",       // output 0: witness length
+                       }, ""),
+                       hash: testutil.MustDecodeHash("a0ece5ca48dca27708394852599cb4d04af22c36538c03cb72663f3091406c17"),
+               },
+               {
+                       tx: NewTx(TxData{
+                               Version:        1,
+                               SerializedSize: uint64(108),
+                               Inputs: []*TxInput{
+                                       NewCoinbaseInput([]byte("arbitrary")),
+                               },
+                               Outputs: []*TxOutput{
+                                       NewTxOutput(*consensus.BTMAssetID, 254354, []byte("true")),
+                                       NewTxOutput(*consensus.BTMAssetID, 254354, []byte("false")),
+                               },
+                       }),
+                       hex: strings.Join([]string{
+                               "07",                 // serflags
+                               "01",                 // transaction version
+                               "00",                 // tx time range
+                               "01",                 // inputs count
+                               "01",                 // input 0: asset version
+                               "0b",                 // input 0: input commitment length
+                               "02",                 // input 0: coinbase type flag
+                               "09",                 // input 0: arbitrary length
+                               "617262697472617279", // input 0: arbitrary data
+                               "00",                 // input 0: witness length
+                               "02",                 // outputs count
+                               "01",                 // output 0: asset version
+                               "29",                 // output 0: serialization length
+                               "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", // output 0: assetID
+                               "92c30f",   // output 0: amount
+                               "01",       // output 0: version
+                               "04",       // output 0: control program length
+                               "74727565", // output 0: control program
+                               "00",       // output 0: witness length
+                               "01",       // output 1: asset version
+                               "2a",       // output 1: serialization length
+                               "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", // output 1: assetID
+                               "92c30f",     // output 1: amount
+                               "01",         // output 1: version
+                               "05",         // output 1: control program length
+                               "66616c7365", // output 1: control program
+                               "00",         // output 1: witness length
+                       }, ""),
+                       hash: testutil.MustDecodeHash("c2e2f388706fc06cca6aba5e85e0e85029f772872e1b6e6c32a70da22d0309dc"),
+               },
+       }
+       for i, test := range cases {
+               got := testutil.Serialize(t, test.tx)
+               want, err := hex.DecodeString(test.hex)
+               if err != nil {
+                       t.Fatal(err)
+               }
+
+               if !bytes.Equal(got, want) {
+                       t.Errorf("test %d: bytes = %x want %x", i, got, want)
+               }
+               if test.tx.ID != test.hash {
+                       t.Errorf("test %d: hash = %x want %x", i, test.tx.ID.Bytes(), test.hash.Bytes())
+               }
+
+               txJSON, err := json.Marshal(test.tx)
+               if err != nil {
+                       t.Errorf("test %d: error marshaling tx to json: %s", i, err)
+               }
+               txFromJSON := Tx{}
+               if err := json.Unmarshal(txJSON, &txFromJSON); err != nil {
+                       t.Errorf("test %d: error unmarshaling tx from json: %s", i, err)
+               }
+               if !testutil.DeepEqual(test.tx.TxData, txFromJSON.TxData) {
+                       t.Errorf("test %d: types.TxData -> json -> types.TxData: got:\n%s\nwant:\n%s", i, spew.Sdump(txFromJSON.TxData), spew.Sdump(test.tx.TxData))
+               }
+
+               tx1 := new(TxData)
+               if err := tx1.UnmarshalText([]byte(test.hex)); err != nil {
+                       t.Errorf("test %d: unexpected err %v", i, err)
+               }
+               if !testutil.DeepEqual(*tx1, test.tx.TxData) {
+                       t.Errorf("test %d: tx1 is:\n%swant:\n%s", i, spew.Sdump(*tx1), spew.Sdump(test.tx.TxData))
+               }
+       }
+}
+
+func TestTransactionTrailingGarbage(t *testing.T) {
+       // validTxHex is a valid tx, we don't care what's inside as long as it's valid
+       validTxHex := `07010001012b00030a0908916133a0d64d1d973b631e226ef95338ad4a536b95635f32f0d04708a6f2a26380a094a58d1d09000101010103010203010129000000000000000000000000000000000000000000000000000000000000000080a094a58d1d01010100`
+       validTx := Tx{}
+       if err := validTx.UnmarshalText([]byte(validTxHex)); err != nil {
+               t.Fatal(err)
+       }
+
+       invalidTxHex := validTxHex + strings.Repeat("00", 10)
+       invalidTx := Tx{}
+       if err := invalidTx.UnmarshalText([]byte(invalidTxHex)); err == nil {
+               t.Fatal("expected error with trailing garbage but got nil")
+       }
+}
+
+func TestInvalidIssuance(t *testing.T) {
+       hex := strings.Join([]string{
+               "07",     // serflags
+               "01",     // transaction version
+               "00",     // tx maxtime
+               "01",     // inputs count
+               "01",     // input 0, asset version
+               "2b",     // input 0, input commitment length prefix
+               "00",     // input 0, input commitment, "issuance" type
+               "03",     // input 0, input commitment, nonce length prefix
+               "0a0908", // input 0, input commitment, nonce
+               "0000000000000000000000000000000000000000000000000000000000000000", // input 0, input commitment, WRONG asset id
+               "80a094a58d1d", // input 0, input commitment, amount
+               "29",           // input 0, issuance input witness length prefix
+               "03deff1d4319d67baa10a6d26c1fea9c3e8d30e33474efee1a610a9bb49d758d", // input 0, issuance input witness, initial block
+               "00",     // input 0, issuance input witness, asset definition
+               "01",     // input 0, issuance input witness, vm version
+               "01",     // input 0, issuance input witness, issuance program length prefix
+               "01",     // input 0, issuance input witness, issuance program
+               "01",     // input 0, issuance input witness, arguments count
+               "03",     // input 0, issuance input witness, argument 0 length prefix
+               "010203", // input 0, issuance input witness, argument 0
+               "01",     // outputs count
+               "01",     // output 0, asset version
+               "29",     // output 0, output commitment length
+               "0000000000000000000000000000000000000000000000000000000000000000", // output 0, output commitment, asset id
+               "80a094a58d1d",   // output 0, output commitment, amount
+               "01",             // output 0, output commitment, vm version
+               "0101",           // output 0, output commitment, control program
+               "066f7574707574", // output 0, reference data
+               "00",             // output 0, output witness
+               "0869737375616e6365",
+       }, "")
+
+       tx := new(TxData)
+       if err := tx.UnmarshalText([]byte(hex)); errors.Root(err) != errBadAssetID {
+               t.Errorf("want errBadAssetID, got %v", err)
+       }
+}
+
+func TestFuzzUnknownAssetVersion(t *testing.T) {
+       rawTx := `07010001012b00030a0908916133a0d64d1d973b631e226ef95338ad4a536b95635f32f0d04708a6f2a26380a094a58d1d09000101010103010203010129000000000000000000000000000000000000000000000000000000000000000080a094a58d1d01010100`
+       want := Tx{}
+       if err := want.UnmarshalText([]byte(rawTx)); err != nil {
+               t.Fatal(err)
+       }
+
+       b, err := want.MarshalText()
+       if err != nil {
+               t.Fatal(err)
+       }
+
+       got := Tx{}
+       if err = got.UnmarshalText(b); err != nil {
+               t.Fatal(err)
+       }
+       if got.ID.String() != want.ID.String() {
+               t.Errorf("tx id changed to %s", got.ID.String())
+       }
+}
+
+func BenchmarkTxWriteToTrue(b *testing.B) {
+       tx := &Tx{}
+       for i := 0; i < b.N; i++ {
+               tx.writeTo(ioutil.Discard, 0)
+       }
+}
+
+func BenchmarkTxWriteToFalse(b *testing.B) {
+       tx := &Tx{}
+       for i := 0; i < b.N; i++ {
+               tx.writeTo(ioutil.Discard, serRequired)
+       }
+}
+
+func BenchmarkTxWriteToTrue200(b *testing.B) {
+       tx := &Tx{}
+       for i := 0; i < 200; i++ {
+               tx.Inputs = append(tx.Inputs, NewSpendInput(nil, bc.Hash{}, bc.AssetID{}, 0, 0, nil))
+               tx.Outputs = append(tx.Outputs, NewTxOutput(bc.AssetID{}, 0, nil))
+       }
+       for i := 0; i < b.N; i++ {
+               tx.writeTo(ioutil.Discard, 0)
+       }
+}
+
+func BenchmarkTxWriteToFalse200(b *testing.B) {
+       tx := &Tx{}
+       for i := 0; i < 200; i++ {
+               tx.Inputs = append(tx.Inputs, NewSpendInput(nil, bc.Hash{}, bc.AssetID{}, 0, 0, nil))
+               tx.Outputs = append(tx.Outputs, NewTxOutput(bc.AssetID{}, 0, nil))
+       }
+       for i := 0; i < b.N; i++ {
+               tx.writeTo(ioutil.Discard, serRequired)
+       }
+}
+
+func BenchmarkTxInputWriteToTrue(b *testing.B) {
+       input := NewSpendInput(nil, bc.Hash{}, bc.AssetID{}, 0, 0, nil)
+       ew := errors.NewWriter(ioutil.Discard)
+       for i := 0; i < b.N; i++ {
+               input.writeTo(ew)
+       }
+}
+
+func BenchmarkTxInputWriteToFalse(b *testing.B) {
+       input := NewSpendInput(nil, bc.Hash{}, bc.AssetID{}, 0, 0, nil)
+       ew := errors.NewWriter(ioutil.Discard)
+       for i := 0; i < b.N; i++ {
+               input.writeTo(ew)
+       }
+}
+
+func BenchmarkTxOutputWriteToTrue(b *testing.B) {
+       output := NewTxOutput(bc.AssetID{}, 0, nil)
+       ew := errors.NewWriter(ioutil.Discard)
+       for i := 0; i < b.N; i++ {
+               output.writeTo(ew)
+       }
+}
+
+func BenchmarkTxOutputWriteToFalse(b *testing.B) {
+       output := NewTxOutput(bc.AssetID{}, 0, nil)
+       ew := errors.NewWriter(ioutil.Discard)
+       for i := 0; i < b.N; i++ {
+               output.writeTo(ew)
+       }
+}
+
+func BenchmarkAssetAmountWriteTo(b *testing.B) {
+       aa := bc.AssetAmount{}
+       for i := 0; i < b.N; i++ {
+               aa.WriteTo(ioutil.Discard)
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/txinput.go b/vendor/github.com/bytom/protocol/bc/types/txinput.go
new file mode 100644 (file)
index 0000000..9820ee0
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/txinput.go
@@ -0,0 +1,286 @@
+package types
+
+import (
+       "fmt"
+       "io"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/errors"
+       "github.com/bytom/protocol/bc"
+)
+
+// serflag variables for input types.
+const (
+       IssuanceInputType uint8 = iota
+       SpendInputType
+       CoinbaseInputType
+)
+
+type (
+       // TxInput is the top level struct of tx input.
+       TxInput struct {
+               AssetVersion uint64
+               TypedInput
+               CommitmentSuffix []byte
+               WitnessSuffix    []byte
+       }
+
+       // TypedInput return the txinput type.
+       TypedInput interface {
+               InputType() uint8
+       }
+)
+
+var errBadAssetID = errors.New("asset ID does not match other issuance parameters")
+
+// AssetAmount return the asset id and amount of the txinput.
+func (t *TxInput) AssetAmount() bc.AssetAmount {
+       switch inp := t.TypedInput.(type) {
+       case *IssuanceInput:
+               assetID := inp.AssetID()
+               return bc.AssetAmount{
+                       AssetId: &assetID,
+                       Amount:  inp.Amount,
+               }
+       case *SpendInput:
+               return inp.AssetAmount
+       }
+       return bc.AssetAmount{}
+}
+
+// AssetID return the assetID of the txinput
+func (t *TxInput) AssetID() bc.AssetID {
+       switch inp := t.TypedInput.(type) {
+       case *IssuanceInput:
+               return inp.AssetID()
+       case *SpendInput:
+               return *inp.AssetId
+
+       }
+       return bc.AssetID{}
+}
+
+// Amount return the asset amount of the txinput
+func (t *TxInput) Amount() uint64 {
+       switch inp := t.TypedInput.(type) {
+       case *IssuanceInput:
+               return inp.Amount
+       case *SpendInput:
+               return inp.Amount
+       }
+       return 0
+}
+
+// ControlProgram return the control program of the spend input
+func (t *TxInput) ControlProgram() []byte {
+       if si, ok := t.TypedInput.(*SpendInput); ok {
+               return si.ControlProgram
+       }
+       return nil
+}
+
+// IssuanceProgram return the control program of the issuance input
+func (t *TxInput) IssuanceProgram() []byte {
+       if ii, ok := t.TypedInput.(*IssuanceInput); ok {
+               return ii.IssuanceProgram
+       }
+       return nil
+}
+
+// AssetDefinition return the asset definition of the issuance input
+func (t *TxInput) AssetDefinition() []byte {
+       if ii, ok := t.TypedInput.(*IssuanceInput); ok {
+               return ii.AssetDefinition
+       }
+       return nil
+}
+
+// Arguments get the args for the input
+func (t *TxInput) Arguments() [][]byte {
+       switch inp := t.TypedInput.(type) {
+       case *IssuanceInput:
+               return inp.Arguments
+       case *SpendInput:
+               return inp.Arguments
+       }
+       return nil
+}
+
+// SetArguments set the args for the input
+func (t *TxInput) SetArguments(args [][]byte) {
+       switch inp := t.TypedInput.(type) {
+       case *IssuanceInput:
+               inp.Arguments = args
+       case *SpendInput:
+               inp.Arguments = args
+       }
+}
+
+// SpentOutputID calculate the hash of spended output
+func (t *TxInput) SpentOutputID() (o bc.Hash, err error) {
+       if si, ok := t.TypedInput.(*SpendInput); ok {
+               o, err = ComputeOutputID(&si.SpendCommitment)
+       }
+       return o, err
+}
+
+func (t *TxInput) readFrom(r *blockchain.Reader) (err error) {
+       if t.AssetVersion, err = blockchain.ReadVarint63(r); err != nil {
+               return err
+       }
+
+       var assetID bc.AssetID
+       t.CommitmentSuffix, err = blockchain.ReadExtensibleString(r, func(r *blockchain.Reader) error {
+               if t.AssetVersion != 1 {
+                       return nil
+               }
+               var icType [1]byte
+               if _, err = io.ReadFull(r, icType[:]); err != nil {
+                       return errors.Wrap(err, "reading input commitment type")
+               }
+               switch icType[0] {
+               case IssuanceInputType:
+                       ii := new(IssuanceInput)
+                       t.TypedInput = ii
+
+                       if ii.Nonce, err = blockchain.ReadVarstr31(r); err != nil {
+                               return err
+                       }
+                       if _, err = assetID.ReadFrom(r); err != nil {
+                               return err
+                       }
+                       if ii.Amount, err = blockchain.ReadVarint63(r); err != nil {
+                               return err
+                       }
+
+               case SpendInputType:
+                       si := new(SpendInput)
+                       t.TypedInput = si
+                       if si.SpendCommitmentSuffix, err = si.SpendCommitment.readFrom(r, 1); err != nil {
+                               return err
+                       }
+
+               case CoinbaseInputType:
+                       ci := new(CoinbaseInput)
+                       t.TypedInput = ci
+                       if ci.Arbitrary, err = blockchain.ReadVarstr31(r); err != nil {
+                               return err
+                       }
+
+               default:
+                       return fmt.Errorf("unsupported input type %d", icType[0])
+               }
+               return nil
+       })
+       if err != nil {
+               return err
+       }
+
+       t.WitnessSuffix, err = blockchain.ReadExtensibleString(r, func(r *blockchain.Reader) error {
+               if t.AssetVersion != 1 {
+                       return nil
+               }
+
+               switch inp := t.TypedInput.(type) {
+               case *IssuanceInput:
+                       if inp.AssetDefinition, err = blockchain.ReadVarstr31(r); err != nil {
+                               return err
+                       }
+                       if inp.VMVersion, err = blockchain.ReadVarint63(r); err != nil {
+                               return err
+                       }
+                       if inp.IssuanceProgram, err = blockchain.ReadVarstr31(r); err != nil {
+                               return err
+                       }
+                       if inp.AssetID() != assetID {
+                               return errBadAssetID
+                       }
+                       if inp.Arguments, err = blockchain.ReadVarstrList(r); err != nil {
+                               return err
+                       }
+
+               case *SpendInput:
+                       if inp.Arguments, err = blockchain.ReadVarstrList(r); err != nil {
+                               return err
+                       }
+               }
+               return nil
+       })
+
+       return err
+}
+
+func (t *TxInput) writeTo(w io.Writer) error {
+       if _, err := blockchain.WriteVarint63(w, t.AssetVersion); err != nil {
+               return errors.Wrap(err, "writing asset version")
+       }
+
+       if _, err := blockchain.WriteExtensibleString(w, t.CommitmentSuffix, t.writeInputCommitment); err != nil {
+               return errors.Wrap(err, "writing input commitment")
+       }
+
+       _, err := blockchain.WriteExtensibleString(w, t.WitnessSuffix, t.writeInputWitness)
+       return errors.Wrap(err, "writing input witness")
+}
+
+func (t *TxInput) writeInputCommitment(w io.Writer) (err error) {
+       if t.AssetVersion != 1 {
+               return nil
+       }
+
+       switch inp := t.TypedInput.(type) {
+       case *IssuanceInput:
+               if _, err = w.Write([]byte{IssuanceInputType}); err != nil {
+                       return err
+               }
+               if _, err = blockchain.WriteVarstr31(w, inp.Nonce); err != nil {
+                       return err
+               }
+               assetID := t.AssetID()
+               if _, err = assetID.WriteTo(w); err != nil {
+                       return err
+               }
+               _, err = blockchain.WriteVarint63(w, inp.Amount)
+               return err
+
+       case *SpendInput:
+               if _, err = w.Write([]byte{SpendInputType}); err != nil {
+                       return err
+               }
+               return inp.SpendCommitment.writeExtensibleString(w, inp.SpendCommitmentSuffix, t.AssetVersion)
+
+       case *CoinbaseInput:
+               if _, err = w.Write([]byte{CoinbaseInputType}); err != nil {
+                       return err
+               }
+               if _, err = blockchain.WriteVarstr31(w, inp.Arbitrary); err != nil {
+                       return errors.Wrap(err, "writing coinbase arbitrary")
+               }
+       }
+       return nil
+}
+
+func (t *TxInput) writeInputWitness(w io.Writer) error {
+       if t.AssetVersion != 1 {
+               return nil
+       }
+       switch inp := t.TypedInput.(type) {
+       case *IssuanceInput:
+               if _, err := blockchain.WriteVarstr31(w, inp.AssetDefinition); err != nil {
+                       return err
+               }
+               if _, err := blockchain.WriteVarint63(w, inp.VMVersion); err != nil {
+                       return err
+               }
+               if _, err := blockchain.WriteVarstr31(w, inp.IssuanceProgram); err != nil {
+                       return err
+               }
+               _, err := blockchain.WriteVarstrList(w, inp.Arguments)
+               return err
+
+       case *SpendInput:
+               _, err := blockchain.WriteVarstrList(w, inp.Arguments)
+               return err
+       }
+       return nil
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/txinput_test.go b/vendor/github.com/bytom/protocol/bc/types/txinput_test.go
new file mode 100644 (file)
index 0000000..2286573
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/txinput_test.go
@@ -0,0 +1,160 @@
+package types
+
+import (
+       "bytes"
+       "encoding/hex"
+       "strings"
+       "testing"
+
+       "github.com/davecgh/go-spew/spew"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/testutil"
+)
+
+func TestSerializationIssuance(t *testing.T) {
+       arguments := [][]byte{
+               []byte("arguments1"),
+               []byte("arguments2"),
+       }
+       issuance := NewIssuanceInput([]byte("nonce"), 254354, []byte("issuanceProgram"), arguments, []byte("assetDefinition"))
+
+       wantHex := strings.Join([]string{
+               "01",         // asset version
+               "2a",         // serialization length
+               "00",         // issuance type flag
+               "05",         // nonce length
+               "6e6f6e6365", // nonce
+               "a69849e11add96ac7053aad22ba2349a4abf5feb0475a0afcadff4e128be76cf", // assetID
+               "92c30f", // amount
+               "38",     // input witness length
+               "0f",     // asset definition length
+               "6173736574446566696e6974696f6e", // asset definition
+               "01", // vm version
+               "0f", // issuanceProgram length
+               "69737375616e636550726f6772616d", // issuance program
+               "02", // argument array length
+               "0a", // first argument length
+               "617267756d656e747331", // first argument data
+               "0a", // second argument length
+               "617267756d656e747332", // second argument data
+       }, "")
+
+       // Test convert struct to hex
+       var buffer bytes.Buffer
+       if err := issuance.writeTo(&buffer); err != nil {
+               t.Fatal(err)
+       }
+
+       gotHex := hex.EncodeToString(buffer.Bytes())
+       if gotHex != wantHex {
+               t.Errorf("serialization bytes = %s want %s", gotHex, wantHex)
+       }
+
+       // Test convert hex to struct
+       var gotIssuance TxInput
+       decodeHex, err := hex.DecodeString(wantHex)
+       if err != nil {
+               t.Fatal(err)
+       }
+
+       if err := gotIssuance.readFrom(blockchain.NewReader(decodeHex)); err != nil {
+               t.Fatal(err)
+       }
+
+       if !testutil.DeepEqual(*issuance, gotIssuance) {
+               t.Errorf("expected marshaled/unmarshaled txinput to be:\n%sgot:\n%s", spew.Sdump(*issuance), spew.Sdump(gotIssuance))
+       }
+}
+
+func TestSerializationSpend(t *testing.T) {
+       arguments := [][]byte{
+               []byte("arguments1"),
+               []byte("arguments2"),
+       }
+       spend := NewSpendInput(arguments, testutil.MustDecodeHash("fad5195a0c8e3b590b86a3c0a95e7529565888508aecca96e9aeda633002f409"), testutil.MustDecodeAsset("fe9791d71b67ee62515e08723c061b5ccb952a80d804417c8aeedf7f633c524a"), 254354, 3, []byte("spendProgram"))
+
+       wantHex := strings.Join([]string{
+               "01", // asset version
+               "54", // input commitment length
+               "01", // spend type flag
+               "52", // spend commitment length
+               "fad5195a0c8e3b590b86a3c0a95e7529565888508aecca96e9aeda633002f409", // source id
+               "fe9791d71b67ee62515e08723c061b5ccb952a80d804417c8aeedf7f633c524a", // assetID
+               "92c30f", // amount
+               "03",     // source position
+               "01",     // vm version
+               "0c",     // spend program length
+               "7370656e6450726f6772616d", // spend program
+               "17", // witness length
+               "02", // argument array length
+               "0a", // first argument length
+               "617267756d656e747331", // first argument data
+               "0a", // second argument length
+               "617267756d656e747332", // second argument data
+       }, "")
+
+       // Test convert struct to hex
+       var buffer bytes.Buffer
+       if err := spend.writeTo(&buffer); err != nil {
+               t.Fatal(err)
+       }
+
+       gotHex := hex.EncodeToString(buffer.Bytes())
+       if gotHex != wantHex {
+               t.Errorf("serialization bytes = %s want %s", gotHex, wantHex)
+       }
+
+       // Test convert hex to struct
+       var gotSpend TxInput
+       decodeHex, err := hex.DecodeString(wantHex)
+       if err != nil {
+               t.Fatal(err)
+       }
+
+       if err := gotSpend.readFrom(blockchain.NewReader(decodeHex)); err != nil {
+               t.Fatal(err)
+       }
+
+       if !testutil.DeepEqual(*spend, gotSpend) {
+               t.Errorf("expected marshaled/unmarshaled txinput to be:\n%sgot:\n%s", spew.Sdump(*spend), spew.Sdump(gotSpend))
+       }
+}
+
+func TestSerializationCoinbase(t *testing.T) {
+       coinbase := NewCoinbaseInput([]byte("arbitrary"))
+       wantHex := strings.Join([]string{
+               "01",                 // asset version
+               "0b",                 // input commitment length
+               "02",                 // coinbase type flag
+               "09",                 // arbitrary length
+               "617262697472617279", // arbitrary data
+               "00",                 // witness length
+       }, "")
+
+       // Test convert struct to hex
+       var buffer bytes.Buffer
+       if err := coinbase.writeTo(&buffer); err != nil {
+               t.Fatal(err)
+       }
+
+       gotHex := hex.EncodeToString(buffer.Bytes())
+       if gotHex != wantHex {
+               t.Errorf("serialization bytes = %s want %s", gotHex, wantHex)
+       }
+
+       // Test convert hex to struct
+       var gotCoinbase TxInput
+       decodeHex, err := hex.DecodeString(wantHex)
+       if err != nil {
+               t.Fatal(err)
+       }
+
+       if err := gotCoinbase.readFrom(blockchain.NewReader(decodeHex)); err != nil {
+               t.Fatal(err)
+       }
+
+       if !testutil.DeepEqual(*coinbase, gotCoinbase) {
+               t.Errorf("expected marshaled/unmarshaled txinput to be:\n%sgot:\n%s", spew.Sdump(*coinbase), spew.Sdump(gotCoinbase))
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/txoutput.go b/vendor/github.com/bytom/protocol/bc/types/txoutput.go
new file mode 100644 (file)
index 0000000..2df28e8
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/txoutput.go
@@ -0,0 +1,84 @@
+package types
+
+import (
+       "io"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/errors"
+       "github.com/bytom/protocol/bc"
+)
+
+// TxOutput is the top level struct of tx output.
+type TxOutput struct {
+       AssetVersion uint64
+       OutputCommitment
+       // Unconsumed suffixes of the commitment and witness extensible strings.
+       CommitmentSuffix []byte
+}
+
+// NewTxOutput create a new output struct
+func NewTxOutput(assetID bc.AssetID, amount uint64, controlProgram []byte) *TxOutput {
+       return &TxOutput{
+               AssetVersion: 1,
+               OutputCommitment: OutputCommitment{
+                       AssetAmount: bc.AssetAmount{
+                               AssetId: &assetID,
+                               Amount:  amount,
+                       },
+                       VMVersion:      1,
+                       ControlProgram: controlProgram,
+               },
+       }
+}
+
+func (to *TxOutput) readFrom(r *blockchain.Reader) (err error) {
+       if to.AssetVersion, err = blockchain.ReadVarint63(r); err != nil {
+               return errors.Wrap(err, "reading asset version")
+       }
+
+       if to.CommitmentSuffix, err = to.OutputCommitment.readFrom(r, to.AssetVersion); err != nil {
+               return errors.Wrap(err, "reading output commitment")
+       }
+
+       // read and ignore the (empty) output witness
+       _, err = blockchain.ReadVarstr31(r)
+       return errors.Wrap(err, "reading output witness")
+}
+
+func (to *TxOutput) writeTo(w io.Writer) error {
+       if _, err := blockchain.WriteVarint63(w, to.AssetVersion); err != nil {
+               return errors.Wrap(err, "writing asset version")
+       }
+
+       if err := to.writeCommitment(w); err != nil {
+               return errors.Wrap(err, "writing output commitment")
+       }
+
+       if _, err := blockchain.WriteVarstr31(w, nil); err != nil {
+               return errors.Wrap(err, "writing witness")
+       }
+       return nil
+}
+
+func (to *TxOutput) writeCommitment(w io.Writer) error {
+       return to.OutputCommitment.writeExtensibleString(w, to.CommitmentSuffix, to.AssetVersion)
+}
+
+// ComputeOutputID assembles an output entry given a spend commitment and
+// computes and returns its corresponding entry ID.
+func ComputeOutputID(sc *SpendCommitment) (h bc.Hash, err error) {
+       defer func() {
+               if r, ok := recover().(error); ok {
+                       err = r
+               }
+       }()
+       src := &bc.ValueSource{
+               Ref:      &sc.SourceID,
+               Value:    &sc.AssetAmount,
+               Position: sc.SourcePosition,
+       }
+       o := bc.NewOutput(src, &bc.Program{VmVersion: sc.VMVersion, Code: sc.ControlProgram}, 0)
+
+       h = bc.EntryID(o)
+       return h, nil
+}

diff --git a/vendor/github.com/bytom/protocol/bc/types/txoutput_test.go b/vendor/github.com/bytom/protocol/bc/types/txoutput_test.go
new file mode 100644 (file)
index 0000000..d229e7c
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/bc/types/txoutput_test.go
@@ -0,0 +1,96 @@
+package types
+
+import (
+       "bytes"
+       "encoding/hex"
+       "strings"
+       "testing"
+
+       "github.com/davecgh/go-spew/spew"
+
+       "github.com/bytom/encoding/blockchain"
+       "github.com/bytom/protocol/bc"
+       "github.com/bytom/testutil"
+)
+
+func TestSerializationTxOutput(t *testing.T) {
+       assetID := testutil.MustDecodeAsset("81756fdab39a17163b0ce582ee4ee256fb4d1e156c692b997d608a42ecb38d47")
+       txOutput := NewTxOutput(assetID, 254354, []byte("TestSerializationTxOutput"))
+
+       wantHex := strings.Join([]string{
+               "01", // asset version
+               "3e", // serialization length
+               "81756fdab39a17163b0ce582ee4ee256fb4d1e156c692b997d608a42ecb38d47", // assetID
+               "92c30f", // amount
+               "01",     // version
+               "19",     // control program length
+               "5465737453657269616c697a6174696f6e54784f7574707574", // control program
+               "00", // witness length
+       }, "")
+
+       // Test convert struct to hex
+       var buffer bytes.Buffer
+       if err := txOutput.writeTo(&buffer); err != nil {
+               t.Fatal(err)
+       }
+
+       gotHex := hex.EncodeToString(buffer.Bytes())
+       if gotHex != wantHex {
+               t.Errorf("serialization bytes = %s want %s", gotHex, wantHex)
+       }
+
+       // Test convert hex to struct
+       var gotTxOutput TxOutput
+       decodeHex, err := hex.DecodeString(wantHex)
+       if err != nil {
+               t.Fatal(err)
+       }
+
+       if err := gotTxOutput.readFrom(blockchain.NewReader(decodeHex)); err != nil {
+               t.Fatal(err)
+       }
+
+       if !testutil.DeepEqual(*txOutput, gotTxOutput) {
+               t.Errorf("expected marshaled/unmarshaled txoutput to be:\n%sgot:\n%s", spew.Sdump(*txOutput), spew.Sdump(gotTxOutput))
+       }
+}
+
+func TestComputeOutputID(t *testing.T) {
+       btmAssetID := testutil.MustDecodeAsset("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
+       cases := []struct {
+               sc           *SpendCommitment
+               wantOutputID string
+       }{
+               {
+                       sc: &SpendCommitment{
+                               AssetAmount:    bc.AssetAmount{AssetId: &btmAssetID, Amount: 1000},
+                               SourceID:       testutil.MustDecodeHash("4b5cb973f5bef4eadde4c89b92ee73312b940e84164da0594149554cc8a2adea"),
+                               SourcePosition: 2,
+                               VMVersion:      1,
+                               ControlProgram: testutil.MustDecodeHexString("0014cb9f2391bafe2bc1159b2c4c8a0f17ba1b4dd94e"),
+                       },
+                       wantOutputID: "c9902bad769008917d14710d60391a43fe6cbd255c839045425c65f749c39d81",
+               },
+               {
+                       sc: &SpendCommitment{
+                               AssetAmount:    bc.AssetAmount{AssetId: &btmAssetID, Amount: 999},
+                               SourceID:       testutil.MustDecodeHash("9e74e35362ffc73c8967aa0008da8fcbc62a21d35673fb970445b5c2972f8603"),
+                               SourcePosition: 2,
+                               VMVersion:      1,
+                               ControlProgram: testutil.MustDecodeHexString("001418549d84daf53344d32563830c7cf979dc19d5c0"),
+                       },
+                       wantOutputID: "4d038eed93338f4dfc8603101bc70f4b8e662e69828c6dadf4207b5dfaf66275",
+               },
+       }
+
+       for _, c := range cases {
+               outputID, err := ComputeOutputID(c.sc)
+               if err != nil {
+                       t.Fatal(err)
+               }
+
+               if c.wantOutputID != outputID.String() {
+                       t.Errorf("test compute output id fail, got:%s, want:%s", outputID.String(), c.wantOutputID)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/vm/assemble.go b/vendor/github.com/bytom/protocol/vm/assemble.go
new file mode 100644 (file)
index 0000000..bd4d50c
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/assemble.go
@@ -0,0 +1,228 @@
+package vm
+
+import (
+       "bufio"
+       "encoding/binary"
+       "encoding/hex"
+       "fmt"
+       "math"
+       "strconv"
+       "strings"
+       "unicode"
+
+       "github.com/bytom/errors"
+)
+
+// Assemble converts a string like "2 3 ADD 5 NUMEQUAL" into 0x525393559c.
+// The input should not include PUSHDATA (or OP_<num>) ops; those will
+// be inferred.
+// Input may include jump-target labels of the form $foo, which can
+// then be used as JUMP:$foo or JUMPIF:$foo.
+func Assemble(s string) (res []byte, err error) {
+       // maps labels to the location each refers to
+       locations := make(map[string]uint32)
+
+       // maps unresolved uses of labels to the locations that need to be filled in
+       unresolved := make(map[string][]int)
+
+       handleJump := func(addrStr string, opcode Op) error {
+               res = append(res, byte(opcode))
+               l := len(res)
+
+               var fourBytes [4]byte
+               res = append(res, fourBytes[:]...)
+
+               if strings.HasPrefix(addrStr, "$") {
+                       unresolved[addrStr] = append(unresolved[addrStr], l)
+                       return nil
+               }
+
+               address, err := strconv.ParseUint(addrStr, 10, 32)
+               if err != nil {
+                       return err
+               }
+               binary.LittleEndian.PutUint32(res[l:], uint32(address))
+               return nil
+       }
+
+       scanner := bufio.NewScanner(strings.NewReader(s))
+       scanner.Split(split)
+       for scanner.Scan() {
+               token := scanner.Text()
+               if info, ok := opsByName[token]; ok {
+                       if strings.HasPrefix(token, "PUSHDATA") || strings.HasPrefix(token, "JUMP") {
+                               return nil, errors.Wrap(ErrToken, token)
+                       }
+                       res = append(res, byte(info.op))
+               } else if strings.HasPrefix(token, "JUMP:") {
+                       // TODO (Dan): add IF/ELSE/ENDIF and BEGIN/WHILE/REPEAT
+                       err = handleJump(strings.TrimPrefix(token, "JUMP:"), OP_JUMP)
+                       if err != nil {
+                               return nil, err
+                       }
+               } else if strings.HasPrefix(token, "JUMPIF:") {
+                       err = handleJump(strings.TrimPrefix(token, "JUMPIF:"), OP_JUMPIF)
+                       if err != nil {
+                               return nil, err
+                       }
+               } else if strings.HasPrefix(token, "$") {
+                       if _, seen := locations[token]; seen {
+                               return nil, fmt.Errorf("label %s redefined", token)
+                       }
+                       if len(res) > math.MaxInt32 {
+                               return nil, fmt.Errorf("program too long")
+                       }
+                       locations[token] = uint32(len(res))
+               } else if strings.HasPrefix(token, "0x") {
+                       bytes, err := hex.DecodeString(strings.TrimPrefix(token, "0x"))
+                       if err != nil {
+                               return nil, err
+                       }
+                       res = append(res, PushdataBytes(bytes)...)
+               } else if len(token) >= 2 && token[0] == '\'' && token[len(token)-1] == '\'' {
+                       bytes := make([]byte, 0, len(token)-2)
+                       var b int
+                       for i := 1; i < len(token)-1; i++ {
+                               if token[i] == '\\' {
+                                       i++
+                               }
+                               bytes = append(bytes, token[i])
+                               b++
+                       }
+                       res = append(res, PushdataBytes(bytes)...)
+               } else if num, err := strconv.ParseInt(token, 10, 64); err == nil {
+                       res = append(res, PushdataInt64(num)...)
+               } else {
+                       return nil, errors.Wrap(ErrToken, token)
+               }
+       }
+       err = scanner.Err()
+       if err != nil {
+               return nil, err
+       }
+
+       for label, uses := range unresolved {
+               location, ok := locations[label]
+               if !ok {
+                       return nil, fmt.Errorf("undefined label %s", label)
+               }
+               for _, use := range uses {
+                       binary.LittleEndian.PutUint32(res[use:], location)
+               }
+       }
+
+       return res, nil
+}
+
+func Disassemble(prog []byte) (string, error) {
+       var (
+               insts []Instruction
+
+               // maps program locations (used as jump targets) to a label for each
+               labels = make(map[uint32]string)
+       )
+
+       // first pass: look for jumps
+       for i := uint32(0); i < uint32(len(prog)); {
+               inst, err := ParseOp(prog, i)
+               if err != nil {
+                       return "", err
+               }
+               switch inst.Op {
+               case OP_JUMP, OP_JUMPIF:
+                       addr := binary.LittleEndian.Uint32(inst.Data)
+                       if _, ok := labels[addr]; !ok {
+                               labelNum := len(labels)
+                               label := words[labelNum%len(words)]
+                               if labelNum >= len(words) {
+                                       label += fmt.Sprintf("%d", labelNum/len(words)+1)
+                               }
+                               labels[addr] = label
+                       }
+               }
+               insts = append(insts, inst)
+               i += inst.Len
+       }
+
+       var (
+               loc  uint32
+               strs []string
+       )
+
+       for _, inst := range insts {
+               if label, ok := labels[loc]; ok {
+                       strs = append(strs, "$"+label)
+               }
+
+               var str string
+               switch inst.Op {
+               case OP_JUMP, OP_JUMPIF:
+                       addr := binary.LittleEndian.Uint32(inst.Data)
+                       str = fmt.Sprintf("%s:$%s", inst.Op.String(), labels[addr])
+               default:
+                       if len(inst.Data) > 0 {
+                               str = fmt.Sprintf("0x%x", inst.Data)
+                       } else {
+                               str = inst.Op.String()
+                       }
+               }
+               strs = append(strs, str)
+
+               loc += inst.Len
+       }
+
+       if label, ok := labels[loc]; ok {
+               strs = append(strs, "$"+label)
+       }
+
+       return strings.Join(strs, " "), nil
+}
+
+// split is a bufio.SplitFunc for scanning the input to Compile.
+// It starts like bufio.ScanWords but adjusts the return value to
+// account for quoted strings.
+func split(inp []byte, atEOF bool) (advance int, token []byte, err error) {
+       advance, token, err = bufio.ScanWords(inp, atEOF)
+       if err != nil {
+               return
+       }
+       if len(token) > 1 && token[0] != '\'' {
+               return
+       }
+       var start int
+       for ; start < len(inp); start++ {
+               if !unicode.IsSpace(rune(inp[start])) {
+                       break
+               }
+       }
+       if start == len(inp) || inp[start] != '\'' {
+               return
+       }
+       var escape bool
+       for i := start + 1; i < len(inp); i++ {
+               if escape {
+                       escape = false
+               } else {
+                       switch inp[i] {
+                       case '\'':
+                               advance = i + 1
+                               token = inp[start:advance]
+                               return
+                       case '\\':
+                               escape = true
+                       }
+               }
+       }
+       // Reached the end of the input with no closing quote.
+       if atEOF {
+               return 0, nil, ErrToken
+       }
+       return 0, nil, nil
+}
+
+var words = []string{
+       "alpha", "bravo", "charlie", "delta", "echo", "foxtrot", "golf", "hotel",
+       "india", "juliet", "kilo", "lima", "mike", "november", "oscar", "papa",
+       "quebec", "romeo", "sierra", "tango", "uniform", "victor", "whisky", "xray",
+       "yankee", "zulu",
+}

diff --git a/vendor/github.com/bytom/protocol/vm/assemble_test.go b/vendor/github.com/bytom/protocol/vm/assemble_test.go
new file mode 100644 (file)
index 0000000..5a141e2
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/assemble_test.go
@@ -0,0 +1,82 @@
+package vm
+
+import (
+       "bytes"
+       "encoding/hex"
+       "testing"
+
+       "github.com/bytom/errors"
+)
+
+func TestAssemble(t *testing.T) {
+       cases := []struct {
+               plain   string
+               want    []byte
+               wantErr error
+       }{
+               {"2 3 ADD 5 NUMEQUAL", mustDecodeHex("525393559c"), nil},
+               {"0x02 3 ADD 5 NUMEQUAL", mustDecodeHex("01025393559c"), nil},
+               {"19 14 SUB 5 NUMEQUAL", mustDecodeHex("01135e94559c"), nil},
+               {"'Hello' 'WORLD' CAT 'HELLOWORLD' EQUAL", mustDecodeHex("0548656c6c6f05574f524c447e0a48454c4c4f574f524c4487"), nil},
+               {`'H\'E' 'W' CAT 'H\'EW' EQUAL`, mustDecodeHex("0348274501577e044827455787"), nil},
+               {`'HELLO '  'WORLD' CAT 'HELLO WORLD' EQUAL`, mustDecodeHex("0648454c4c4f2005574f524c447e0b48454c4c4f20574f524c4487"), nil},
+               {`0x1`, nil, hex.ErrLength},
+               {`BADTOKEN`, nil, ErrToken},
+               {`'Unterminated quote`, nil, ErrToken},
+       }
+
+       for _, c := range cases {
+               got, gotErr := Assemble(c.plain)
+
+               if errors.Root(gotErr) != c.wantErr {
+                       t.Errorf("Compile(%s) err = %v want %v", c.plain, errors.Root(gotErr), c.wantErr)
+                       continue
+               }
+
+               if c.wantErr != nil {
+                       continue
+               }
+
+               if !bytes.Equal(got, c.want) {
+                       t.Errorf("Compile(%s) = %x want %x", c.plain, got, c.want)
+               }
+       }
+}
+
+func TestDisassemble(t *testing.T) {
+       cases := []struct {
+               raw     []byte
+               want    string
+               wantErr error
+       }{
+               {mustDecodeHex("525393559c"), "0x02 0x03 ADD 0x05 NUMEQUAL", nil},
+               {mustDecodeHex("01135e94559c"), "0x13 0x0e SUB 0x05 NUMEQUAL", nil},
+               {mustDecodeHex("6300000000"), "$alpha JUMP:$alpha", nil},
+               {[]byte{0xff}, "NOPxff", nil},
+       }
+
+       for _, c := range cases {
+               got, gotErr := Disassemble(c.raw)
+
+               if errors.Root(gotErr) != c.wantErr {
+                       t.Errorf("Decompile(%x) err = %v want %v", c.raw, errors.Root(gotErr), c.wantErr)
+                       continue
+               }
+
+               if c.wantErr != nil {
+                       continue
+               }
+
+               if got != c.want {
+                       t.Errorf("Decompile(%x) = %s want %s", c.raw, got, c.want)
+               }
+       }
+}
+
+func mustDecodeHex(h string) []byte {
+       bits, err := hex.DecodeString(h)
+       if err != nil {
+               panic(err)
+       }
+       return bits
+}

diff --git a/vendor/github.com/bytom/protocol/vm/bitwise.go b/vendor/github.com/bytom/protocol/vm/bitwise.go
new file mode 100644 (file)
index 0000000..1d20dcf
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/bitwise.go
@@ -0,0 +1,150 @@
+package vm
+
+import "bytes"
+
+func opInvert(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       top, err := vm.top()
+       if err != nil {
+               return err
+       }
+       err = vm.applyCost(int64(len(top)))
+       if err != nil {
+               return err
+       }
+       // Could rewrite top in place but maybe it's a shared data
+       // structure?
+       newTop := make([]byte, 0, len(top))
+       for _, b := range top {
+               newTop = append(newTop, ^b)
+       }
+       vm.dataStack[len(vm.dataStack)-1] = newTop
+       return nil
+}
+
+func opAnd(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       b, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       a, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       min, max := len(a), len(b)
+       if min > max {
+               min, max = max, min
+       }
+       err = vm.applyCost(int64(min))
+       if err != nil {
+               return err
+       }
+       res := make([]byte, 0, min)
+       for i := 0; i < min; i++ {
+               res = append(res, a[i]&b[i])
+       }
+       return vm.push(res, true)
+}
+
+func opOr(vm *virtualMachine) error {
+       return doOr(vm, false)
+}
+
+func opXor(vm *virtualMachine) error {
+       return doOr(vm, true)
+}
+
+func doOr(vm *virtualMachine, xor bool) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       b, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       a, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       min, max := len(a), len(b)
+       if min > max {
+               min, max = max, min
+       }
+       err = vm.applyCost(int64(max))
+       if err != nil {
+               return err
+       }
+       res := make([]byte, 0, max)
+       for i := 0; i < max; i++ {
+               var aByte, bByte, resByte byte
+               if i >= len(a) {
+                       aByte = 0
+               } else {
+                       aByte = a[i]
+               }
+               if i >= len(b) {
+                       bByte = 0
+               } else {
+                       bByte = b[i]
+               }
+               if xor {
+                       resByte = aByte ^ bByte
+               } else {
+                       resByte = aByte | bByte
+               }
+
+               res = append(res, resByte)
+       }
+       return vm.push(res, true)
+}
+
+func opEqual(vm *virtualMachine) error {
+       res, err := doEqual(vm)
+       if err != nil {
+               return err
+       }
+       return vm.pushBool(res, true)
+}
+
+func opEqualVerify(vm *virtualMachine) error {
+       res, err := doEqual(vm)
+       if err != nil {
+               return err
+       }
+       if res {
+               return nil
+       }
+       return ErrVerifyFailed
+}
+
+func doEqual(vm *virtualMachine) (bool, error) {
+       err := vm.applyCost(1)
+       if err != nil {
+               return false, err
+       }
+       b, err := vm.pop(true)
+       if err != nil {
+               return false, err
+       }
+       a, err := vm.pop(true)
+       if err != nil {
+               return false, err
+       }
+       min, max := len(a), len(b)
+       if min > max {
+               min, max = max, min
+       }
+       err = vm.applyCost(int64(min))
+       if err != nil {
+               return false, err
+       }
+       return bytes.Equal(a, b), nil
+}

diff --git a/vendor/github.com/bytom/protocol/vm/bitwise_test.go b/vendor/github.com/bytom/protocol/vm/bitwise_test.go
new file mode 100644 (file)
index 0000000..a4fe1ab
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/bitwise_test.go
@@ -0,0 +1,269 @@
+package vm
+
+import (
+       "testing"
+
+       "github.com/bytom/testutil"
+)
+
+func TestBitwiseOps(t *testing.T) {
+       type testStruct struct {
+               op      Op
+               startVM *virtualMachine
+               wantErr error
+               wantVM  *virtualMachine
+       }
+       cases := []testStruct{{
+               op: OP_INVERT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{255}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{{0}},
+               },
+       }, {
+               op: OP_INVERT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{255, 0}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49997,
+                       dataStack: [][]byte{{0, 255}},
+               },
+       }, {
+               op: OP_AND,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0x80}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{0x80}},
+               },
+       }, {
+               op: OP_AND,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0x80, 0xff}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -10,
+                       dataStack:    [][]byte{{0x80}},
+               },
+       }, {
+               op: OP_AND,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0x80, 0xff}, {0xff}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -10,
+                       dataStack:    [][]byte{{0x80}},
+               },
+       }, {
+               op: OP_OR,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0x80}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{0xff}},
+               },
+       }, {
+               op: OP_OR,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0x80, 0x10}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49997,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{0xff, 0x10}},
+               },
+       }, {
+               op: OP_OR,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff, 0x10}, {0x80}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49997,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{0xff, 0x10}},
+               },
+       }, {
+               op: OP_XOR,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0x80}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{0x7f}},
+               },
+       }, {
+               op: OP_XOR,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0x80, 0x10}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49997,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{0x7f, 0x10}},
+               },
+       }, {
+               op: OP_XOR,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff, 0x10}, {0x80}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49997,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{0x7f, 0x10}},
+               },
+       }, {
+               op: OP_EQUAL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0xff}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_EQUAL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff, 0x10}, {0xff, 0x10}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49997,
+                       deferredCost: -11,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_EQUAL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0x80}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -10,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_EQUAL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0xff, 0x80}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -11,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_EQUAL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff, 0x80}, {0xff}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -11,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_EQUALVERIFY,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0xff}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -18,
+                       dataStack:    [][]byte{},
+               },
+       }, {
+               op: OP_EQUALVERIFY,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff, 0x10}, {0xff, 0x10}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49997,
+                       deferredCost: -20,
+                       dataStack:    [][]byte{},
+               },
+       }, {
+               op: OP_EQUALVERIFY,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0x80}},
+               },
+               wantErr: ErrVerifyFailed,
+       }, {
+               op: OP_EQUALVERIFY,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0xff, 0x80}},
+               },
+               wantErr: ErrVerifyFailed,
+       }, {
+               op: OP_EQUALVERIFY,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff, 0x80}, {0xff}},
+               },
+               wantErr: ErrVerifyFailed,
+       }}
+
+       bitops := []Op{OP_INVERT, OP_AND, OP_OR, OP_XOR, OP_EQUAL, OP_EQUALVERIFY}
+       for _, op := range bitops {
+               cases = append(cases, testStruct{
+                       op: op,
+                       startVM: &virtualMachine{
+                               runLimit:  0,
+                               dataStack: [][]byte{{0xff}, {0xff}},
+                       },
+                       wantErr: ErrRunLimitExceeded,
+               }, testStruct{
+                       op: op,
+                       startVM: &virtualMachine{
+                               runLimit:  1,
+                               dataStack: [][]byte{{0xff}, {0xff}},
+                       },
+                       wantErr: ErrRunLimitExceeded,
+               })
+       }
+
+       for i, c := range cases {
+               err := ops[c.op].fn(c.startVM)
+
+               if err != c.wantErr {
+                       t.Errorf("case %d, op %s: got err = %v want %v", i, ops[c.op].name, err, c.wantErr)
+                       continue
+               }
+               if c.wantErr != nil {
+                       continue
+               }
+
+               if !testutil.DeepEqual(c.startVM, c.wantVM) {
+                       t.Errorf("case %d, op %s: unexpected vm result\n\tgot:  %+v\n\twant: %+v\n", i, ops[c.op].name, c.startVM, c.wantVM)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/vm/context.go b/vendor/github.com/bytom/protocol/vm/context.go
new file mode 100644 (file)
index 0000000..853e91c
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/context.go
@@ -0,0 +1,35 @@
+package vm
+
+// Context contains the execution context for the virtual machine.
+//
+// Most fields are pointers and are not required to be present in all
+// cases. A nil pointer means the value is absent in that context. If
+// an opcode executes that requires an absent field to be present, it
+// will return ErrContext.
+//
+// By convention, variables of this type have the name context, _not_
+// ctx (to avoid confusion with context.Context).
+type Context struct {
+       VMVersion uint64
+       Code      []byte
+       Arguments [][]byte
+
+       EntryID []byte
+
+       // TxVersion must be present when verifying transaction components
+       // (such as spends and issuances).
+       TxVersion   *uint64
+       BlockHeight *uint64
+
+       // Fields below this point are required by particular opcodes when
+       // verifying transaction components.
+
+       NumResults    *uint64
+       AssetID       *[]byte
+       Amount        *uint64
+       DestPos       *uint64
+       SpentOutputID *[]byte
+
+       TxSigHash   func() []byte
+       CheckOutput func(index uint64, amount uint64, assetID []byte, vmVersion uint64, code []byte, expansion bool) (bool, error)
+}

diff --git a/vendor/github.com/bytom/protocol/vm/control.go b/vendor/github.com/bytom/protocol/vm/control.go
new file mode 100644 (file)
index 0000000..946b369
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/control.go
@@ -0,0 +1,108 @@
+package vm
+
+import (
+       "encoding/binary"
+)
+
+func opVerify(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       p, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       if AsBool(p) {
+               return nil
+       }
+       return ErrVerifyFailed
+}
+
+func opFail(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       return ErrReturn
+}
+
+func opCheckPredicate(vm *virtualMachine) error {
+       err := vm.applyCost(256)
+       if err != nil {
+               return err
+       }
+       vm.deferCost(-256 + 64) // get most of that cost back at the end
+       limit, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       predicate, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       n, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if limit < 0 {
+               return ErrBadValue
+       }
+       l := int64(len(vm.dataStack))
+       if n < 0 {
+               n = l
+       }
+       if n > l {
+               return ErrDataStackUnderflow
+       }
+       if limit == 0 {
+               limit = vm.runLimit
+       }
+       err = vm.applyCost(limit)
+       if err != nil {
+               return err
+       }
+
+       childVM := virtualMachine{
+               context:   vm.context,
+               program:   predicate,
+               runLimit:  limit,
+               depth:     vm.depth + 1,
+               dataStack: append([][]byte{}, vm.dataStack[l-n:]...),
+       }
+       vm.dataStack = vm.dataStack[:l-n]
+
+       childErr := childVM.run()
+
+       vm.deferCost(-childVM.runLimit)
+       vm.deferCost(-stackCost(childVM.dataStack))
+       vm.deferCost(-stackCost(childVM.altStack))
+
+       return vm.pushBool(childErr == nil && !childVM.falseResult(), true)
+}
+
+func opJump(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       address := binary.LittleEndian.Uint32(vm.data)
+       vm.nextPC = address
+       return nil
+}
+
+func opJumpIf(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       p, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       if AsBool(p) {
+               address := binary.LittleEndian.Uint32(vm.data)
+               vm.nextPC = address
+       }
+       return nil
+}

diff --git a/vendor/github.com/bytom/protocol/vm/control_test.go b/vendor/github.com/bytom/protocol/vm/control_test.go
new file mode 100644 (file)
index 0000000..2c134df
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/control_test.go
@@ -0,0 +1,220 @@
+package vm
+
+import (
+       "testing"
+
+       "github.com/bytom/testutil"
+)
+
+func TestControlOps(t *testing.T) {
+       type testStruct struct {
+               op      Op
+               startVM *virtualMachine
+               wantErr error
+               wantVM  *virtualMachine
+       }
+       cases := []testStruct{{
+               op: OP_JUMP,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       pc:       0,
+                       nextPC:   1,
+                       data:     []byte{0x05, 0x00, 0x00, 0x00},
+               },
+               wantErr: nil,
+               wantVM: &virtualMachine{
+                       runLimit: 49999,
+                       pc:       0,
+                       nextPC:   5,
+                       data:     []byte{0x05, 0x00, 0x00, 0x00},
+               },
+       }, {
+               op: OP_JUMP,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       pc:       0,
+                       nextPC:   1,
+                       data:     []byte{0xff, 0xff, 0xff, 0xff},
+               },
+               wantErr: nil,
+               wantVM: &virtualMachine{
+                       runLimit: 49999,
+                       pc:       0,
+                       nextPC:   4294967295,
+                       data:     []byte{0xff, 0xff, 0xff, 0xff},
+               },
+       }, {
+               op: OP_JUMPIF,
+               startVM: &virtualMachine{
+                       runLimit:     50000,
+                       pc:           0,
+                       nextPC:       1,
+                       deferredCost: 0,
+                       dataStack:    [][]byte{{1}},
+                       data:         []byte{0x05, 0x00, 0x00, 0x00},
+               },
+               wantErr: nil,
+               wantVM: &virtualMachine{
+                       runLimit:     49999,
+                       pc:           0,
+                       nextPC:       5,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{},
+                       data:         []byte{0x05, 0x00, 0x00, 0x00},
+               },
+       }, {
+               op: OP_JUMPIF,
+               startVM: &virtualMachine{
+                       runLimit:     50000,
+                       pc:           0,
+                       nextPC:       1,
+                       deferredCost: 0,
+                       dataStack:    [][]byte{{}},
+                       data:         []byte{0x05, 0x00, 0x00, 0x00},
+               },
+               wantErr: nil,
+               wantVM: &virtualMachine{
+                       runLimit:     49999,
+                       pc:           0,
+                       nextPC:       1,
+                       deferredCost: -8,
+                       dataStack:    [][]byte{},
+                       data:         []byte{0x05, 0x00, 0x00, 0x00},
+               },
+       }, {
+               op: OP_VERIFY,
+               startVM: &virtualMachine{
+                       pc:           0,
+                       runLimit:     50000,
+                       deferredCost: 0,
+                       dataStack:    [][]byte{{1}},
+               },
+               wantErr: nil,
+               wantVM: &virtualMachine{
+                       runLimit:     49999,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{},
+               },
+       }, {
+               op: OP_VERIFY,
+               startVM: &virtualMachine{
+                       runLimit:     50000,
+                       deferredCost: 0,
+                       dataStack:    [][]byte{{1, 1}},
+               },
+               wantErr: nil,
+               wantVM: &virtualMachine{
+                       runLimit:     49999,
+                       deferredCost: -10,
+                       dataStack:    [][]byte{},
+               },
+       }, {
+               op: OP_VERIFY,
+               startVM: &virtualMachine{
+                       runLimit:     50000,
+                       deferredCost: 0,
+                       dataStack:    [][]byte{{}},
+               },
+               wantErr: ErrVerifyFailed,
+       }, {
+               startVM: &virtualMachine{runLimit: 50000},
+               op:      OP_FAIL,
+               wantErr: ErrReturn,
+       }, {
+               op: OP_CHECKPREDICATE,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{}, {byte(OP_TRUE)}, {}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     0,
+                       deferredCost: -49951,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_CHECKPREDICATE,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{}, {}, {}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     0,
+                       deferredCost: -49952,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_CHECKPREDICATE,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{}, {byte(OP_FAIL)}, {}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     0,
+                       deferredCost: -49952,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_CHECKPREDICATE,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{}, {}, Int64Bytes(-1)},
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_CHECKPREDICATE,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{}, {}, Int64Bytes(50000)},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_CHECKPREDICATE,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0x05}, {0x07}, {0x02}, {byte(OP_ADD), byte(OP_12), byte(OP_NUMEQUAL)}, {}},
+               },
+               wantVM: &virtualMachine{
+                       deferredCost: -49968,
+                       dataStack:    [][]byte{{0x01}},
+               },
+       }, {
+               // stack underflow in child vm should produce false result in parent vm
+               op: OP_CHECKPREDICATE,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0x05}, {0x07}, {0x01}, {byte(OP_ADD), byte(OP_DATA_12), byte(OP_NUMEQUAL)}, {}},
+               },
+               wantVM: &virtualMachine{
+                       deferredCost: -49954,
+                       dataStack:    [][]byte{{0x05}, {}},
+               },
+       }}
+
+       limitChecks := []Op{
+               OP_CHECKPREDICATE, OP_VERIFY, OP_FAIL,
+       }
+
+       for _, op := range limitChecks {
+               cases = append(cases, testStruct{
+                       op:      op,
+                       startVM: &virtualMachine{runLimit: 0},
+                       wantErr: ErrRunLimitExceeded,
+               })
+       }
+
+       for i, c := range cases {
+               err := ops[c.op].fn(c.startVM)
+
+               if err != c.wantErr {
+                       t.Errorf("case %d, op %s: got err = %v want %v", i, c.op.String(), err, c.wantErr)
+                       continue
+               }
+               if c.wantErr != nil {
+                       continue
+               }
+
+               if !testutil.DeepEqual(c.startVM, c.wantVM) {
+                       t.Errorf("case %d, op %s: unexpected vm result\n\tgot:  %+v\n\twant: %+v\n", i, c.op.String(), c.startVM, c.wantVM)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/vm/crypto.go b/vendor/github.com/bytom/protocol/vm/crypto.go
new file mode 100644 (file)
index 0000000..38da2af
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/crypto.go
@@ -0,0 +1,158 @@
+package vm
+
+import (
+       "crypto/sha256"
+       "hash"
+
+       "golang.org/x/crypto/sha3"
+
+       "github.com/bytom/crypto"
+       "github.com/bytom/crypto/ed25519"
+       "github.com/bytom/crypto/sm3"
+       "github.com/bytom/math/checked"
+)
+
+func opSha256(vm *virtualMachine) error {
+       return doHash(vm, sha256.New)
+}
+
+func opSha3(vm *virtualMachine) error {
+       return doHash(vm, sha3.New256)
+}
+
+func doHash(vm *virtualMachine, hashFactory func() hash.Hash) error {
+       x, err := vm.pop(false)
+       if err != nil {
+               return err
+       }
+       cost := int64(len(x))
+       if cost < 64 {
+               cost = 64
+       }
+       err = vm.applyCost(cost)
+       if err != nil {
+               return err
+       }
+       h := hashFactory()
+       _, err = h.Write(x)
+       if err != nil {
+               return err
+       }
+       return vm.push(h.Sum(nil), false)
+}
+
+func opCheckSig(vm *virtualMachine) error {
+       err := vm.applyCost(1024)
+       if err != nil {
+               return err
+       }
+       pubkeyBytes, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       msg, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       sig, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       if len(msg) != 32 {
+               return ErrBadValue
+       }
+       if len(pubkeyBytes) != ed25519.PublicKeySize {
+               return vm.pushBool(false, true)
+       }
+       return vm.pushBool(ed25519.Verify(ed25519.PublicKey(pubkeyBytes), msg, sig), true)
+}
+
+func opCheckMultiSig(vm *virtualMachine) error {
+       numPubkeys, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       pubCost, ok := checked.MulInt64(numPubkeys, 1024)
+       if numPubkeys < 0 || !ok {
+               return ErrBadValue
+       }
+       err = vm.applyCost(pubCost)
+       if err != nil {
+               return err
+       }
+       numSigs, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if numSigs < 0 || numSigs > numPubkeys || (numPubkeys > 0 && numSigs == 0) {
+               return ErrBadValue
+       }
+       pubkeyByteses := make([][]byte, 0, numPubkeys)
+       for i := int64(0); i < numPubkeys; i++ {
+               pubkeyBytes, err := vm.pop(true)
+               if err != nil {
+                       return err
+               }
+               pubkeyByteses = append(pubkeyByteses, pubkeyBytes)
+       }
+       msg, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       if len(msg) != 32 {
+               return ErrBadValue
+       }
+       sigs := make([][]byte, 0, numSigs)
+       for i := int64(0); i < numSigs; i++ {
+               sig, err := vm.pop(true)
+               if err != nil {
+                       return err
+               }
+               sigs = append(sigs, sig)
+       }
+
+       pubkeys := make([]ed25519.PublicKey, 0, numPubkeys)
+       for _, p := range pubkeyByteses {
+               if len(p) != ed25519.PublicKeySize {
+                       return vm.pushBool(false, true)
+               }
+               pubkeys = append(pubkeys, ed25519.PublicKey(p))
+       }
+
+       for len(sigs) > 0 && len(pubkeys) > 0 {
+               if ed25519.Verify(pubkeys[0], msg, sigs[0]) {
+                       sigs = sigs[1:]
+               }
+               pubkeys = pubkeys[1:]
+       }
+       return vm.pushBool(len(sigs) == 0, true)
+}
+
+func opTxSigHash(vm *virtualMachine) error {
+       err := vm.applyCost(256)
+       if err != nil {
+               return err
+       }
+       if vm.context.TxSigHash == nil {
+               return ErrContext
+       }
+       return vm.push(vm.context.TxSigHash(), false)
+}
+
+func opHash160(vm *virtualMachine) error {
+       data, err := vm.pop(false)
+       if err != nil {
+               return err
+       }
+
+       cost := int64(len(data) + 64)
+       if err = vm.applyCost(cost); err != nil {
+               return err
+       }
+
+       return vm.push(crypto.Ripemd160(data), false)
+}
+
+func opSm3(vm *virtualMachine) error {
+       return doHash(vm, sm3.New)
+}

diff --git a/vendor/github.com/bytom/protocol/vm/crypto_test.go b/vendor/github.com/bytom/protocol/vm/crypto_test.go
new file mode 100644 (file)
index 0000000..6551348
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/crypto_test.go
@@ -0,0 +1,488 @@
+package vm
+
+import (
+       "testing"
+
+       "github.com/bytom/testutil"
+)
+
+func TestCheckSig(t *testing.T) {
+       cases := []struct {
+               prog    string
+               ok, err bool
+       }{
+               {
+                       // This one's OK
+                       "0x26ced30b1942b89ef5332a9f22f1a61e5a6a3f8a5bc33b2fc58b1daf78c81bf1d5c8add19cea050adeb37da3a7bf8f813c6a6922b42934a6441fa6bb1c7fc208 0x0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20 0xdbca6fb13badb7cfdf76510070ffad15b85f9934224a9e11202f5e8f86b584a6 CHECKSIG",
+                       true, false,
+               },
+               {
+                       // This one has a wrong-length signature
+                       "0x26ced30b1942b89ef5332a9f22f1a61e5a6a3f8a5bc33b2fc58b1daf78c81bf1d5c8add19cea050adeb37da3a7bf8f813c6a6922b42934a6441fa6bb1c7fc2 0x0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20 0xdbca6fb13badb7cfdf76510070ffad15b85f9934224a9e11202f5e8f86b584a6 CHECKSIG",
+                       false, false,
+               },
+               {
+                       // This one has a wrong-length message
+                       "0x26ced30b1942b89ef5332a9f22f1a61e5a6a3f8a5bc33b2fc58b1daf78c81bf1d5c8add19cea050adeb37da3a7bf8f813c6a6922b42934a6441fa6bb1c7fc208 0x0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f 0xdbca6fb13badb7cfdf76510070ffad15b85f9934224a9e11202f5e8f86b584a6 CHECKSIG",
+                       false, true,
+               },
+               {
+                       // This one has a wrong-length pubkey
+                       "0x26ced30b1942b89ef5332a9f22f1a61e5a6a3f8a5bc33b2fc58b1daf78c81bf1d5c8add19cea050adeb37da3a7bf8f813c6a6922b42934a6441fa6bb1c7fc208 0x0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20 0xdbca6fb13badb7cfdf76510070ffad15b85f9934224a9e11202f5e8f86b584 CHECKSIG",
+                       false, false,
+               },
+               {
+                       // This one has a wrong byte in the signature
+                       "0x00ced30b1942b89ef5332a9f22f1a61e5a6a3f8a5bc33b2fc58b1daf78c81bf1d5c8add19cea050adeb37da3a7bf8f813c6a6922b42934a6441fa6bb1c7fc208 0x0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20 0xdbca6fb13badb7cfdf76510070ffad15b85f9934224a9e11202f5e8f86b584a6 CHECKSIG",
+                       false, false,
+               },
+               {
+                       // This one has a wrong byte in the message
+                       "0x26ced30b1942b89ef5332a9f22f1a61e5a6a3f8a5bc33b2fc58b1daf78c81bf1d5c8add19cea050adeb37da3a7bf8f813c6a6922b42934a6441fa6bb1c7fc208 0x0002030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20 0xdbca6fb13badb7cfdf76510070ffad15b85f9934224a9e11202f5e8f86b584a6 CHECKSIG",
+                       false, false,
+               },
+               {
+                       // This one has a wrong byte in the pubkey
+                       "0x26ced30b1942b89ef5332a9f22f1a61e5a6a3f8a5bc33b2fc58b1daf78c81bf1d5c8add19cea050adeb37da3a7bf8f813c6a6922b42934a6441fa6bb1c7fc208 0x0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20 0x00ca6fb13badb7cfdf76510070ffad15b85f9934224a9e11202f5e8f86b584a6 CHECKSIG",
+                       false, false,
+               },
+               {
+                       "0x010203 0x0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20 0x040506 1 1 CHECKMULTISIG",
+                       false, false,
+               },
+               {
+                       "0x010203 0x0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f 0x040506 1 1 CHECKMULTISIG",
+                       false, true,
+               },
+               {
+                       "0x26ced30b1942b89ef5332a9f22f1a61e5a6a3f8a5bc33b2fc58b1daf78c81bf1d5c8add19cea050adeb37da3a7bf8f813c6a6922b42934a6441fa6bb1c7fc208 0x0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20 0xdbca6fb13badb7cfdf76510070ffad15b85f9934224a9e11202f5e8f86b584a6 1 1 CHECKMULTISIG",
+                       true, false,
+               },
+       }
+
+       for i, c := range cases {
+               prog, err := Assemble(c.prog)
+               if err != nil {
+                       t.Fatalf("case %d: %s", i, err)
+               }
+               vm := &virtualMachine{
+                       program:  prog,
+                       runLimit: 50000,
+               }
+               err = vm.run()
+               if c.err {
+                       if err == nil {
+                               t.Errorf("case %d: expected error, got ok result", i)
+                       }
+               } else if c.ok {
+                       if err != nil {
+                               t.Errorf("case %d: expected ok result, got error %s", i, err)
+                       }
+               } else if !vm.falseResult() {
+                       t.Errorf("case %d: expected false VM result, got error %s", i, err)
+               }
+       }
+}
+
+func TestCryptoOps(t *testing.T) {
+       OP_SM3 := Op(0xb0)
+       ops[OP_SM3] = opInfo{OP_SM3, "SM3", opSm3}
+
+       type testStruct struct {
+               op      Op
+               startVM *virtualMachine
+               wantErr error
+               wantVM  *virtualMachine
+       }
+       cases := []testStruct{{
+               op: OP_SHA256,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit: 49905,
+                       dataStack: [][]byte{{
+                               75, 245, 18, 47, 52, 69, 84, 197, 59, 222, 46, 187, 140, 210, 183, 227,
+                               209, 96, 10, 214, 49, 195, 133, 165, 215, 204, 226, 60, 119, 133, 69, 154,
+                       }},
+               },
+       }, {
+               op: OP_SHA256,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{make([]byte, 65)},
+               },
+               wantVM: &virtualMachine{
+                       runLimit: 49968,
+                       dataStack: [][]byte{{
+                               152, 206, 66, 222, 239, 81, 212, 2, 105, 213, 66, 245, 49, 75, 239, 44,
+                               116, 104, 212, 1, 173, 93, 133, 22, 139, 250, 180, 192, 16, 143, 117, 247,
+                       }},
+               },
+       }, {
+               op: OP_SHA3,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit: 49905,
+                       dataStack: [][]byte{{
+                               39, 103, 241, 92, 138, 242, 242, 199, 34, 93, 82, 115, 253, 214, 131, 237,
+                               199, 20, 17, 10, 152, 125, 16, 84, 105, 124, 52, 138, 237, 78, 108, 199,
+                       }},
+               },
+       }, {
+               op: OP_SHA3,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{make([]byte, 65)},
+               },
+               wantVM: &virtualMachine{
+                       runLimit: 49968,
+                       dataStack: [][]byte{{
+                               65, 106, 167, 181, 192, 224, 101, 48, 102, 167, 198, 77, 189, 208, 0, 157,
+                               190, 132, 56, 97, 81, 254, 3, 159, 217, 66, 250, 162, 219, 97, 114, 235,
+                       }},
+               },
+       }, {
+               op: OP_HASH160,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit: 49916,
+                       dataStack: [][]byte{{
+                               242, 145, 186, 80, 21, 223, 52, 140, 128, 133, 63, 165, 187, 15, 121, 70, 245, 201, 225, 179,
+                       }},
+               },
+       }, {
+               op: OP_HASH160,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{make([]byte, 65)},
+               },
+               wantVM: &virtualMachine{
+                       runLimit: 49916,
+                       dataStack: [][]byte{{
+                               171, 60, 102, 205, 10, 63, 18, 180, 244, 250, 235, 84, 138, 85, 22, 7, 148, 250, 215, 6,
+                       }},
+               },
+       }, {
+               op: OP_SM3,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit: 49905,
+                       dataStack: [][]byte{{
+                               121, 155, 113, 154, 192, 49, 252, 137, 198, 216, 146, 90, 72, 125, 173, 7,
+                               48, 143, 131, 123, 122, 183, 187, 199, 206, 189, 58, 65, 24, 253, 47, 56,
+                       }},
+               },
+       }, {
+               op: OP_SM3,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{make([]byte, 65)},
+               },
+               wantVM: &virtualMachine{
+                       runLimit: 49968,
+                       dataStack: [][]byte{{
+                               177, 247, 110, 45, 29, 65, 214, 241, 187, 59, 9, 192, 155, 130, 25, 218,
+                               251, 173, 112, 13, 242, 72, 34, 32, 200, 146, 190, 65, 68, 90, 34, 255,
+                       }},
+               },
+       }, {
+               op: OP_CHECKSIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("af5abdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851" +
+                                       "fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("916f0027a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                       },
+               },
+               wantVM: &virtualMachine{
+                       deferredCost: -143,
+                       runLimit:     48976,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_CHECKSIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("af5abdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851" +
+                                       "fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("badda7a7a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                       },
+               },
+               wantVM: &virtualMachine{
+                       deferredCost: -144,
+                       runLimit:     48976,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_CHECKSIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("af5abdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851" +
+                                       "fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("916f0027a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               mustDecodeHex("bad220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                       },
+               },
+               wantVM: &virtualMachine{
+                       deferredCost: -144,
+                       runLimit:     48976,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_CHECKSIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("badabdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851" +
+                                       "fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("916f0027a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                       },
+               },
+               wantVM: &virtualMachine{
+                       deferredCost: -144,
+                       runLimit:     48976,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_CHECKSIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("af5abdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851" +
+                                       "fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("badbad"),
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                       },
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_CHECKSIG,
+               startVM: &virtualMachine{
+                       runLimit: 0,
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_CHECKMULTISIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("af5abdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("916f0027a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                               {1},
+                               {1},
+                       },
+               },
+               wantVM: &virtualMachine{
+                       deferredCost: -161,
+                       runLimit:     48976,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_CHECKMULTISIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("badabdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("916f0027a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                               {1},
+                               {1},
+                       },
+               },
+               wantVM: &virtualMachine{
+                       deferredCost: -162,
+                       runLimit:     48976,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_CHECKMULTISIG,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{},
+               },
+               wantErr: ErrDataStackUnderflow,
+       }, {
+               op: OP_CHECKMULTISIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               {1},
+                               {1},
+                       },
+               },
+               wantErr: ErrDataStackUnderflow,
+       }, {
+               op: OP_CHECKMULTISIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("916f0027a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               {1},
+                               {1},
+                       },
+               },
+               wantErr: ErrDataStackUnderflow,
+       }, {
+               op: OP_CHECKMULTISIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                               mustDecodeHex("916f0027a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               {1},
+                               {1},
+                       },
+               },
+               wantErr: ErrDataStackUnderflow,
+       }, {
+               op: OP_CHECKMULTISIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("af5abdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("badbad"),
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                               {1},
+                               {1},
+                       },
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_CHECKMULTISIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("af5abdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("916f0027a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                               {1},
+                               {0},
+                       },
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_CHECKMULTISIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("af5abdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("916f0027a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                               {0},
+                               {1},
+                       },
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_CHECKMULTISIG,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       dataStack: [][]byte{
+                               mustDecodeHex("af5abdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("916f0027a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                               {2},
+                               {1},
+                       },
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_CHECKMULTISIG,
+               startVM: &virtualMachine{
+                       runLimit: 0,
+                       dataStack: [][]byte{
+                               mustDecodeHex("af5abdf4bbb34f4a089efc298234f84fd909def662a8df03b4d7d40372728851fbd3bf59920af5a7c361a4851967714271d1727e3be417a60053c30969d8860c"),
+                               mustDecodeHex("916f0027a575074ce72a331777c3478d6513f786a591bd892da1a577bf2335f9"),
+                               mustDecodeHex("ab3220d065dc875c6a5b4ecc39809b5f24eb0a605e9eef5190457edbf1e3b866"),
+                               {1},
+                               {1},
+                       },
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_TXSIGHASH,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       context: &Context{
+                               TxSigHash: func() []byte {
+                                       return []byte{
+                                               0x2f, 0x00, 0x3c, 0xdd, 0x64, 0x42, 0x7b, 0x5e,
+                                               0xed, 0xd6, 0xcc, 0xb5, 0x85, 0x47, 0x02, 0x0b,
+                                               0x02, 0xde, 0xf2, 0x2d, 0xc5, 0x99, 0x7e, 0x9d,
+                                               0xa9, 0xac, 0x40, 0x49, 0xc3, 0x4a, 0x58, 0xd8,
+                                       }
+                               },
+                       },
+               },
+               wantVM: &virtualMachine{
+                       runLimit: 49704,
+                       dataStack: [][]byte{{
+                               47, 0, 60, 221, 100, 66, 123, 94,
+                               237, 214, 204, 181, 133, 71, 2, 11,
+                               2, 222, 242, 45, 197, 153, 126, 157,
+                               169, 172, 64, 73, 195, 74, 88, 216,
+                       }},
+               },
+       }, {
+               op: OP_TXSIGHASH,
+               startVM: &virtualMachine{
+                       runLimit: 0,
+                       context:  &Context{},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }}
+
+       hashOps := []Op{OP_SHA256, OP_SHA3, OP_SM3}
+       for _, op := range hashOps {
+               cases = append(cases, testStruct{
+                       op: op,
+                       startVM: &virtualMachine{
+                               runLimit:  0,
+                               dataStack: [][]byte{{1}},
+                       },
+                       wantErr: ErrRunLimitExceeded,
+               })
+       }
+
+       for i, c := range cases {
+               t.Logf("case %d", i)
+
+               err := ops[c.op].fn(c.startVM)
+               gotVM := c.startVM
+
+               if err != c.wantErr {
+                       t.Errorf("case %d, op %s: got err = %v want %v", i, ops[c.op].name, err, c.wantErr)
+                       continue
+               }
+               if c.wantErr != nil {
+                       continue
+               }
+
+               // Hack: the context objects will otherwise compare unequal
+               // sometimes (because of the function pointer within?) and we
+               // don't care
+               c.wantVM.context = gotVM.context
+
+               if !testutil.DeepEqual(gotVM, c.wantVM) {
+                       t.Errorf("case %d, op %s: unexpected vm result\n\tgot:  %+v\n\twant: %+v\n", i, ops[c.op].name, gotVM, c.wantVM)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/vm/errors.go b/vendor/github.com/bytom/protocol/vm/errors.go
new file mode 100644 (file)
index 0000000..4d08f9a
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/errors.go
@@ -0,0 +1,22 @@
+package vm
+
+import "errors"
+
+var (
+       ErrAltStackUnderflow  = errors.New("alt stack underflow")
+       ErrBadValue           = errors.New("bad value")
+       ErrContext            = errors.New("wrong context")
+       ErrDataStackUnderflow = errors.New("data stack underflow")
+       ErrDisallowedOpcode   = errors.New("disallowed opcode")
+       ErrDivZero            = errors.New("division by zero")
+       ErrFalseVMResult      = errors.New("false VM result")
+       ErrLongProgram        = errors.New("program size exceeds maxint32")
+       ErrRange              = errors.New("range error")
+       ErrReturn             = errors.New("RETURN executed")
+       ErrRunLimitExceeded   = errors.New("run limit exceeded")
+       ErrShortProgram       = errors.New("unexpected end of program")
+       ErrToken              = errors.New("unrecognized token")
+       ErrUnexpected         = errors.New("unexpected error")
+       ErrUnsupportedVM      = errors.New("unsupported VM")
+       ErrVerifyFailed       = errors.New("VERIFY failed")
+)

diff --git a/vendor/github.com/bytom/protocol/vm/introspection.go b/vendor/github.com/bytom/protocol/vm/introspection.go
new file mode 100644 (file)
index 0000000..72aaab0
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/introspection.go
@@ -0,0 +1,125 @@
+package vm
+
+func opCheckOutput(vm *virtualMachine) error {
+       err := vm.applyCost(16)
+       if err != nil {
+               return err
+       }
+
+       code, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       vmVersion, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if vmVersion < 0 {
+               return ErrBadValue
+       }
+       assetID, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       amount, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if amount < 0 {
+               return ErrBadValue
+       }
+       index, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if index < 0 {
+               return ErrBadValue
+       }
+
+       if vm.context.CheckOutput == nil {
+               return ErrContext
+       }
+
+       ok, err := vm.context.CheckOutput(uint64(index), uint64(amount), assetID, uint64(vmVersion), code, vm.expansionReserved)
+       if err != nil {
+               return err
+       }
+       return vm.pushBool(ok, true)
+}
+
+func opAsset(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+
+       if vm.context.AssetID == nil {
+               return ErrContext
+       }
+       return vm.push(*vm.context.AssetID, true)
+}
+
+func opAmount(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+
+       if vm.context.Amount == nil {
+               return ErrContext
+       }
+       return vm.pushInt64(int64(*vm.context.Amount), true)
+}
+
+func opProgram(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+
+       return vm.push(vm.context.Code, true)
+}
+
+func opIndex(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+
+       if vm.context.DestPos == nil {
+               return ErrContext
+       }
+       return vm.pushInt64(int64(*vm.context.DestPos), true)
+}
+
+func opEntryID(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       return vm.push(vm.context.EntryID, true)
+}
+
+func opOutputID(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+
+       if vm.context.SpentOutputID == nil {
+               return ErrContext
+       }
+       return vm.push(*vm.context.SpentOutputID, true)
+}
+
+func opBlockHeight(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+
+       if vm.context.BlockHeight == nil {
+               return ErrContext
+       }
+       return vm.pushInt64(int64(*vm.context.BlockHeight), true)
+}

diff --git a/vendor/github.com/bytom/protocol/vm/introspection_test.go b/vendor/github.com/bytom/protocol/vm/introspection_test.go
new file mode 100644 (file)
index 0000000..d2a2885
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/introspection_test.go
@@ -0,0 +1,309 @@
+package vm
+
+import (
+       "testing"
+
+       "github.com/davecgh/go-spew/spew"
+
+       "github.com/bytom/errors"
+       "github.com/bytom/testutil"
+)
+
+func TestOutputIDAndNonceOp(t *testing.T) {
+       // arbitrary
+       outputID := mustDecodeHex("0a60f9b12950c84c221012a808ef7782823b7e16b71fe2ba01811cda96a217df")
+
+       prog := []byte{uint8(OP_OUTPUTID)}
+       vm := &virtualMachine{
+               runLimit: 50000,
+               program:  prog,
+               context:  &Context{SpentOutputID: &outputID},
+       }
+       err := vm.step()
+       if err != nil {
+               t.Fatal(err)
+       }
+       gotVM := vm
+
+       expectedStack := [][]byte{outputID}
+       if !testutil.DeepEqual(gotVM.dataStack, expectedStack) {
+               t.Errorf("expected stack %v, got %v; vm is:\n%s", expectedStack, gotVM.dataStack, spew.Sdump(vm))
+       }
+
+       prog = []byte{uint8(OP_OUTPUTID)}
+       vm = &virtualMachine{
+               runLimit: 50000,
+               program:  prog,
+               context:  &Context{SpentOutputID: nil},
+       }
+       err = vm.step()
+       if err != ErrContext {
+               t.Errorf("expected ErrContext, got %v", err)
+       }
+}
+
+func TestBlockHeight(t *testing.T) {
+       var blockHeight uint64 = 6666
+
+       prog, err := Assemble("BLOCKHEIGHT 6666 NUMEQUAL")
+       if err != nil {
+               t.Fatal(err)
+       }
+       vm := &virtualMachine{
+               runLimit: 50000,
+               program:  prog,
+               context:  &Context{BlockHeight: &blockHeight},
+       }
+       err = vm.run()
+       if err != nil {
+               t.Errorf("got error %s, expected none", err)
+       }
+       if vm.falseResult() {
+               t.Error("result is false, want success")
+       }
+
+       prog, err = Assemble("BLOCKHEIGHT 7777 NUMEQUAL")
+       if err != nil {
+               t.Fatal(err)
+       }
+       vm = &virtualMachine{
+               runLimit: 50000,
+               program:  prog,
+               context:  &Context{BlockHeight: &blockHeight},
+       }
+       err = vm.run()
+       if err == nil && vm.falseResult() {
+               err = ErrFalseVMResult
+       }
+       switch err {
+       case nil:
+               t.Error("got ok result, expected failure")
+       case ErrFalseVMResult:
+               // ok
+       default:
+               t.Errorf("got error %s, expected ErrFalseVMResult", err)
+       }
+}
+
+func TestIntrospectionOps(t *testing.T) {
+       // arbitrary
+       entryID := mustDecodeHex("2e68d78cdeaa98944c12512cf9c719eb4881e9afb61e4b766df5f369aee6392c")
+       assetID := mustDecodeHex("0100000000000000000000000000000000000000000000000000000000000000")
+
+       type testStruct struct {
+               op      Op
+               startVM *virtualMachine
+               wantErr error
+               wantVM  *virtualMachine
+       }
+       cases := []testStruct{{
+               op: OP_CHECKOUTPUT,
+               startVM: &virtualMachine{
+                       dataStack: [][]byte{
+                               {0},
+                               {1},
+                               append([]byte{9}, make([]byte, 31)...),
+                               {1},
+                               []byte("missingprog"),
+                       },
+                       context: &Context{
+                               CheckOutput: func(uint64, uint64, []byte, uint64, []byte, bool) (bool, error) {
+                                       return false, nil
+                               },
+                       },
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     50062,
+                       deferredCost: -78,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_CHECKOUTPUT,
+               startVM: &virtualMachine{
+                       dataStack: [][]byte{
+                               {4},
+                               mustDecodeHex("1f2a05f881ed9fa0c9068a84823677409f863891a2196eb55dbfbb677a566374"),
+                               {7},
+                               append([]byte{2}, make([]byte, 31)...),
+                               Int64Bytes(-1),
+                               []byte("controlprog"),
+                       },
+                       context: &Context{},
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_CHECKOUTPUT,
+               startVM: &virtualMachine{
+                       dataStack: [][]byte{
+                               {4},
+                               mustDecodeHex("1f2a05f881ed9fa0c9068a84823677409f863891a2196eb55dbfbb677a566374"),
+                               Int64Bytes(-1),
+                               append([]byte{2}, make([]byte, 31)...),
+                               {1},
+                               []byte("controlprog"),
+                       },
+                       context: &Context{},
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_CHECKOUTPUT,
+               startVM: &virtualMachine{
+                       dataStack: [][]byte{
+                               Int64Bytes(-1),
+                               mustDecodeHex("1f2a05f881ed9fa0c9068a84823677409f863891a2196eb55dbfbb677a566374"),
+                               {7},
+                               append([]byte{2}, make([]byte, 31)...),
+                               {1},
+                               []byte("controlprog"),
+                       },
+                       context: &Context{},
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_CHECKOUTPUT,
+               startVM: &virtualMachine{
+                       dataStack: [][]byte{
+                               {5},
+                               mustDecodeHex("1f2a05f881ed9fa0c9068a84823677409f863891a2196eb55dbfbb677a566374"),
+                               {7},
+                               append([]byte{2}, make([]byte, 31)...),
+                               {1},
+                               []byte("controlprog"),
+                       },
+                       context: &Context{
+                               CheckOutput: func(uint64, uint64, []byte, uint64, []byte, bool) (bool, error) {
+                                       return false, ErrBadValue
+                               },
+                       },
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_CHECKOUTPUT,
+               startVM: &virtualMachine{
+                       runLimit: 0,
+                       dataStack: [][]byte{
+                               {4},
+                               mustDecodeHex("1f2a05f881ed9fa0c9068a84823677409f863891a2196eb55dbfbb677a566374"),
+                               {7},
+                               append([]byte{2}, make([]byte, 31)...),
+                               {1},
+                               []byte("controlprog"),
+                       },
+                       context: &Context{},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_ASSET,
+               startVM: &virtualMachine{
+                       context: &Context{AssetID: &assetID},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49959,
+                       deferredCost: 40,
+                       dataStack:    [][]byte{assetID},
+               },
+       }, {
+               op: OP_AMOUNT,
+               startVM: &virtualMachine{
+                       context: &Context{Amount: uint64ptr(5)},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49990,
+                       deferredCost: 9,
+                       dataStack:    [][]byte{{5}},
+               },
+       }, {
+               op: OP_PROGRAM,
+               startVM: &virtualMachine{
+                       program: []byte("spendprog"),
+                       context: &Context{Code: []byte("spendprog")},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49982,
+                       deferredCost: 17,
+                       dataStack:    [][]byte{[]byte("spendprog")},
+               },
+       }, {
+               op: OP_PROGRAM,
+               startVM: &virtualMachine{
+                       program:  []byte("issueprog"),
+                       runLimit: 50000,
+                       context:  &Context{Code: []byte("issueprog")},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49982,
+                       deferredCost: 17,
+                       dataStack:    [][]byte{[]byte("issueprog")},
+               },
+       }, {
+               op: OP_INDEX,
+               startVM: &virtualMachine{
+                       context: &Context{DestPos: new(uint64)},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49991,
+                       deferredCost: 8,
+                       dataStack:    [][]byte{[]byte{}},
+               },
+       }, {
+               op: OP_ENTRYID,
+               startVM: &virtualMachine{
+                       context: &Context{EntryID: entryID},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49959,
+                       deferredCost: 40,
+                       dataStack:    [][]byte{entryID},
+               },
+       }}
+
+       txops := []Op{
+               OP_CHECKOUTPUT, OP_ASSET, OP_AMOUNT, OP_PROGRAM,
+               OP_INDEX, OP_OUTPUTID,
+       }
+
+       for _, op := range txops {
+               cases = append(cases, testStruct{
+                       op: op,
+                       startVM: &virtualMachine{
+                               runLimit: 0,
+                               context:  &Context{},
+                       },
+                       wantErr: ErrRunLimitExceeded,
+               })
+       }
+
+       for i, c := range cases {
+               t.Logf("case %d", i)
+               prog := []byte{byte(c.op)}
+               vm := c.startVM
+               if c.wantErr != ErrRunLimitExceeded {
+                       vm.runLimit = 50000
+               }
+               vm.program = prog
+               err := vm.run()
+               switch errors.Root(err) {
+               case c.wantErr:
+                       // ok
+               case nil:
+                       t.Errorf("case %d, op %s: got no error, want %v", i, ops[c.op].name, c.wantErr)
+               default:
+                       t.Errorf("case %d, op %s: got err = %v want %v", i, ops[c.op].name, err, c.wantErr)
+               }
+               if c.wantErr != nil {
+                       continue
+               }
+               gotVM := vm
+
+               c.wantVM.program = prog
+               c.wantVM.pc = 1
+               c.wantVM.nextPC = 1
+               c.wantVM.context = gotVM.context
+
+               if !testutil.DeepEqual(gotVM, c.wantVM) {
+                       t.Errorf("case %d, op %s: unexpected vm result\n\tgot:  %+v\n\twant: %+v\nstartVM is:\n%s", i, ops[c.op].name, gotVM, c.wantVM, spew.Sdump(c.startVM))
+               }
+       }
+}
+
+func uint64ptr(n uint64) *uint64 { return &n }

diff --git a/vendor/github.com/bytom/protocol/vm/numeric.go b/vendor/github.com/bytom/protocol/vm/numeric.go
new file mode 100644 (file)
index 0000000..09486d2
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/numeric.go
@@ -0,0 +1,459 @@
+package vm
+
+import (
+       "math"
+
+       "github.com/bytom/math/checked"
+)
+
+func op1Add(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       n, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       res, ok := checked.AddInt64(n, 1)
+       if !ok {
+               return ErrRange
+       }
+       return vm.pushInt64(res, true)
+}
+
+func op1Sub(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       n, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       res, ok := checked.SubInt64(n, 1)
+       if !ok {
+               return ErrRange
+       }
+       return vm.pushInt64(res, true)
+}
+
+func op2Mul(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       n, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       res, ok := checked.MulInt64(n, 2)
+       if !ok {
+               return ErrRange
+       }
+       return vm.pushInt64(res, true)
+}
+
+func op2Div(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       n, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       return vm.pushInt64(n>>1, true)
+}
+
+func opNegate(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       n, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       res, ok := checked.NegateInt64(n)
+       if !ok {
+               return ErrRange
+       }
+       return vm.pushInt64(res, true)
+}
+
+func opAbs(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       n, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if n == math.MinInt64 {
+               return ErrRange
+       }
+       if n < 0 {
+               n = -n
+       }
+       return vm.pushInt64(n, true)
+}
+
+func opNot(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       n, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       return vm.pushBool(n == 0, true)
+}
+
+func op0NotEqual(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       n, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       return vm.pushBool(n != 0, true)
+}
+
+func opAdd(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       y, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       res, ok := checked.AddInt64(x, y)
+       if !ok {
+               return ErrRange
+       }
+       return vm.pushInt64(res, true)
+}
+
+func opSub(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       y, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       res, ok := checked.SubInt64(x, y)
+       if !ok {
+               return ErrRange
+       }
+       return vm.pushInt64(res, true)
+}
+
+func opMul(vm *virtualMachine) error {
+       err := vm.applyCost(8)
+       if err != nil {
+               return err
+       }
+       y, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       res, ok := checked.MulInt64(x, y)
+       if !ok {
+               return ErrRange
+       }
+       return vm.pushInt64(res, true)
+}
+
+func opDiv(vm *virtualMachine) error {
+       err := vm.applyCost(8)
+       if err != nil {
+               return err
+       }
+       y, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if y == 0 {
+               return ErrDivZero
+       }
+       res, ok := checked.DivInt64(x, y)
+       if !ok {
+               return ErrRange
+       }
+       return vm.pushInt64(res, true)
+}
+
+func opMod(vm *virtualMachine) error {
+       err := vm.applyCost(8)
+       if err != nil {
+               return err
+       }
+       y, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if y == 0 {
+               return ErrDivZero
+       }
+
+       res, ok := checked.ModInt64(x, y)
+       if !ok {
+               return ErrRange
+       }
+
+       // Go's modulus operator produces the wrong result for mixed-sign
+       // operands
+       if res != 0 && (x >= 0) != (y >= 0) {
+               res += y
+       }
+
+       return vm.pushInt64(res, true)
+}
+
+func opLshift(vm *virtualMachine) error {
+       err := vm.applyCost(8)
+       if err != nil {
+               return err
+       }
+       y, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if y < 0 {
+               return ErrBadValue
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if x == 0 || y == 0 {
+               return vm.pushInt64(x, true)
+       }
+
+       res, ok := checked.LshiftInt64(x, y)
+       if !ok {
+               return ErrRange
+       }
+
+       return vm.pushInt64(res, true)
+}
+
+func opRshift(vm *virtualMachine) error {
+       err := vm.applyCost(8)
+       if err != nil {
+               return err
+       }
+       y, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if y < 0 {
+               return ErrBadValue
+       }
+       return vm.pushInt64(x>>uint64(y), true)
+}
+
+func opBoolAnd(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       b, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       a, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       return vm.pushBool(AsBool(a) && AsBool(b), true)
+}
+
+func opBoolOr(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       b, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       a, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       return vm.pushBool(AsBool(a) || AsBool(b), true)
+}
+
+const (
+       cmpLess = iota
+       cmpLessEqual
+       cmpGreater
+       cmpGreaterEqual
+       cmpEqual
+       cmpNotEqual
+)
+
+func opNumEqual(vm *virtualMachine) error {
+       return doNumCompare(vm, cmpEqual)
+}
+
+func opNumEqualVerify(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       y, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if x == y {
+               return nil
+       }
+       return ErrVerifyFailed
+}
+
+func opNumNotEqual(vm *virtualMachine) error {
+       return doNumCompare(vm, cmpNotEqual)
+}
+
+func opLessThan(vm *virtualMachine) error {
+       return doNumCompare(vm, cmpLess)
+}
+
+func opGreaterThan(vm *virtualMachine) error {
+       return doNumCompare(vm, cmpGreater)
+}
+
+func opLessThanOrEqual(vm *virtualMachine) error {
+       return doNumCompare(vm, cmpLessEqual)
+}
+
+func opGreaterThanOrEqual(vm *virtualMachine) error {
+       return doNumCompare(vm, cmpGreaterEqual)
+}
+
+func doNumCompare(vm *virtualMachine, op int) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       y, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       var res bool
+       switch op {
+       case cmpLess:
+               res = x < y
+       case cmpLessEqual:
+               res = x <= y
+       case cmpGreater:
+               res = x > y
+       case cmpGreaterEqual:
+               res = x >= y
+       case cmpEqual:
+               res = x == y
+       case cmpNotEqual:
+               res = x != y
+       }
+       return vm.pushBool(res, true)
+}
+
+func opMin(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       y, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if x > y {
+               x = y
+       }
+       return vm.pushInt64(x, true)
+}
+
+func opMax(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       y, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if x < y {
+               x = y
+       }
+       return vm.pushInt64(x, true)
+}
+
+func opWithin(vm *virtualMachine) error {
+       err := vm.applyCost(4)
+       if err != nil {
+               return err
+       }
+       max, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       min, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       x, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       return vm.pushBool(x >= min && x < max, true)
+}

diff --git a/vendor/github.com/bytom/protocol/vm/numeric_test.go b/vendor/github.com/bytom/protocol/vm/numeric_test.go
new file mode 100644 (file)
index 0000000..0c7ac48
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/numeric_test.go
@@ -0,0 +1,565 @@
+package vm
+
+import (
+       "fmt"
+       "math"
+       "testing"
+
+       "github.com/bytom/testutil"
+)
+
+func TestNumericOps(t *testing.T) {
+       type testStruct struct {
+               op      Op
+               startVM *virtualMachine
+               wantErr error
+               wantVM  *virtualMachine
+       }
+       cases := []testStruct{{
+               op: OP_1ADD,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{{3}},
+               },
+       }, {
+               op: OP_1SUB,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{{1}},
+               },
+       }, {
+               op: OP_2MUL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{{4}},
+               },
+       }, {
+               op: OP_2DIV,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{{1}},
+               },
+       }, {
+               op: OP_2DIV,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{Int64Bytes(-2)},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{Int64Bytes(-1)},
+               },
+       }, {
+               op: OP_2DIV,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{Int64Bytes(-1)},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{Int64Bytes(-1)},
+               },
+       }, {
+               op: OP_NEGATE,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: 7,
+                       dataStack:    [][]byte{Int64Bytes(-2)},
+               },
+       }, {
+               op: OP_ABS,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{{2}},
+               },
+       }, {
+               op: OP_ABS,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{Int64Bytes(-2)},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -7,
+                       dataStack:    [][]byte{{2}},
+               },
+       }, {
+               op: OP_NOT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -1,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_0NOTEQUAL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{{1}},
+               },
+       }, {
+               op: OP_ADD,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{3}},
+               },
+       }, {
+               op: OP_SUB,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_MUL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49992,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{2}},
+               },
+       }, {
+               op: OP_DIV,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49992,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{2}},
+               },
+       }, {
+               op: OP_DIV,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{Int64Bytes(-2), {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49992,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{Int64Bytes(-2)},
+               },
+       }, {
+               op: OP_DIV,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{Int64Bytes(-2), Int64Bytes(-1)},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49992,
+                       deferredCost: -23,
+                       dataStack:    [][]byte{{2}},
+               },
+       }, {
+               op: OP_DIV,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{Int64Bytes(-3), Int64Bytes(2)},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49992,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{Int64Bytes(-1)},
+               },
+       }, {
+               op: OP_DIV,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {}},
+               },
+               wantErr: ErrDivZero,
+       }, {
+               op: OP_MOD,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49992,
+                       deferredCost: -10,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_MOD,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{Int64Bytes(-12), {10}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49992,
+                       deferredCost: -16,
+                       dataStack:    [][]byte{{8}},
+               },
+       }, {
+               op: OP_MOD,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {0}},
+               },
+               wantErr: ErrDivZero,
+       }, {
+               op: OP_LSHIFT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49992,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{4}},
+               },
+       }, {
+               op: OP_LSHIFT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{Int64Bytes(-2), {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49992,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{Int64Bytes(-4)},
+               },
+       }, {
+               op: OP_RSHIFT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49992,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_RSHIFT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{Int64Bytes(-2), {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49992,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{Int64Bytes(-1)},
+               },
+       }, {
+               op: OP_BOOLAND,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_BOOLOR,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_NUMEQUAL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -10,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_NUMEQUALVERIFY,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -18,
+                       dataStack:    [][]byte{},
+               },
+       }, {
+               op: OP_NUMEQUALVERIFY,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}, {2}},
+               },
+               wantErr: ErrVerifyFailed,
+       }, {
+               op: OP_NUMNOTEQUAL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_LESSTHAN,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -10,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_LESSTHANOREQUAL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -10,
+                       dataStack:    [][]byte{{}},
+               },
+       }, {
+               op: OP_GREATERTHAN,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_GREATERTHANOREQUAL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_MIN,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_MIN,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}, {2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{1}},
+               },
+       }, {
+               op: OP_MAX,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{2}},
+               },
+       }, {
+               op: OP_MAX,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}, {2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49998,
+                       deferredCost: -9,
+                       dataStack:    [][]byte{{2}},
+               },
+       }, {
+               op: OP_WITHIN,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}, {1}, {2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49996,
+                       deferredCost: -18,
+                       dataStack:    [][]byte{{1}},
+               },
+       }}
+
+       numops := []Op{
+               OP_1ADD, OP_1SUB, OP_2MUL, OP_2DIV, OP_NEGATE, OP_ABS, OP_NOT, OP_0NOTEQUAL,
+               OP_ADD, OP_SUB, OP_MUL, OP_DIV, OP_MOD, OP_LSHIFT, OP_RSHIFT, OP_BOOLAND,
+               OP_BOOLOR, OP_NUMEQUAL, OP_NUMEQUALVERIFY, OP_NUMNOTEQUAL, OP_LESSTHAN,
+               OP_LESSTHANOREQUAL, OP_GREATERTHAN, OP_GREATERTHANOREQUAL, OP_MIN, OP_MAX, OP_WITHIN,
+       }
+
+       for _, op := range numops {
+               cases = append(cases, testStruct{
+                       op: op,
+                       startVM: &virtualMachine{
+                               runLimit:  0,
+                               dataStack: [][]byte{{2}, {2}, {2}},
+                       },
+                       wantErr: ErrRunLimitExceeded,
+               })
+       }
+
+       for i, c := range cases {
+               err := ops[c.op].fn(c.startVM)
+
+               if err != c.wantErr {
+                       t.Errorf("case %d, op %s: got err = %v want %v", i, ops[c.op].name, err, c.wantErr)
+                       continue
+               }
+               if c.wantErr != nil {
+                       continue
+               }
+
+               if !testutil.DeepEqual(c.startVM, c.wantVM) {
+                       t.Errorf("case %d, op %s: unexpected vm result\n\tgot:  %+v\n\twant: %+v\n", i, ops[c.op].name, c.startVM, c.wantVM)
+               }
+       }
+}
+
+func TestRangeErrs(t *testing.T) {
+       cases := []struct {
+               prog           string
+               expectRangeErr bool
+       }{
+               {"0 1ADD", false},
+               {fmt.Sprintf("%d 1ADD", int64(math.MinInt64)), false},
+               {fmt.Sprintf("%d 1ADD", int64(math.MaxInt64)-1), false},
+               {fmt.Sprintf("%d 1ADD", int64(math.MaxInt64)), true},
+               {"0 1SUB", false},
+               {fmt.Sprintf("%d 1SUB", int64(math.MaxInt64)), false},
+               {fmt.Sprintf("%d 1SUB", int64(math.MinInt64)+1), false},
+               {fmt.Sprintf("%d 1SUB", int64(math.MinInt64)), true},
+               {"1 2MUL", false},
+               {fmt.Sprintf("%d 2MUL", int64(math.MaxInt64)/2-1), false},
+               {fmt.Sprintf("%d 2MUL", int64(math.MaxInt64)/2+1), true},
+               {fmt.Sprintf("%d 2MUL", int64(math.MinInt64)/2+1), false},
+               {fmt.Sprintf("%d 2MUL", int64(math.MinInt64)/2-1), true},
+               {"1 NEGATE", false},
+               {"-1 NEGATE", false},
+               {fmt.Sprintf("%d NEGATE", int64(math.MaxInt64)), false},
+               {fmt.Sprintf("%d NEGATE", int64(math.MinInt64)), true},
+               {"1 ABS", false},
+               {"-1 ABS", false},
+               {fmt.Sprintf("%d ABS", int64(math.MaxInt64)), false},
+               {fmt.Sprintf("%d ABS", int64(math.MinInt64)), true},
+               {"2 3 ADD", false},
+               {fmt.Sprintf("%d %d ADD", int64(math.MinInt64), int64(math.MaxInt64)), false},
+               {fmt.Sprintf("%d %d ADD", int64(math.MaxInt64)/2-1, int64(math.MaxInt64)/2-2), false},
+               {fmt.Sprintf("%d %d ADD", int64(math.MaxInt64)/2+1, int64(math.MaxInt64)/2+2), true},
+               {fmt.Sprintf("%d %d ADD", int64(math.MinInt64)/2+1, int64(math.MinInt64)/2+2), false},
+               {fmt.Sprintf("%d %d ADD", int64(math.MinInt64)/2-1, int64(math.MinInt64)/2-2), true},
+               {"2 3 SUB", false},
+               {fmt.Sprintf("1 %d SUB", int64(math.MaxInt64)), false},
+               {fmt.Sprintf("-1 %d SUB", int64(math.MinInt64)), false},
+               {fmt.Sprintf("1 %d SUB", int64(math.MinInt64)), true},
+               {fmt.Sprintf("-1 %d SUB", int64(math.MaxInt64)), false},
+               {fmt.Sprintf("-2 %d SUB", int64(math.MaxInt64)), true},
+               {"1 2 LSHIFT", false},
+               {"-1 2 LSHIFT", false},
+               {"-1 63 LSHIFT", false},
+               {"-1 64 LSHIFT", true},
+               {"0 64 LSHIFT", false},
+               {"1 62 LSHIFT", false},
+               {"1 63 LSHIFT", true},
+               {fmt.Sprintf("%d 0 LSHIFT", int64(math.MaxInt64)), false},
+               {fmt.Sprintf("%d 1 LSHIFT", int64(math.MaxInt64)), true},
+               {fmt.Sprintf("%d 1 LSHIFT", int64(math.MaxInt64)/2), false},
+               {fmt.Sprintf("%d 2 LSHIFT", int64(math.MaxInt64)/2), true},
+               {fmt.Sprintf("%d 0 LSHIFT", int64(math.MinInt64)), false},
+               {fmt.Sprintf("%d 1 LSHIFT", int64(math.MinInt64)), true},
+               {fmt.Sprintf("%d 1 LSHIFT", int64(math.MinInt64)/2), false},
+               {fmt.Sprintf("%d 2 LSHIFT", int64(math.MinInt64)/2), true},
+       }
+
+       for i, c := range cases {
+               prog, _ := Assemble(c.prog)
+               vm := &virtualMachine{
+                       program:  prog,
+                       runLimit: 50000,
+               }
+               err := vm.run()
+               switch err {
+               case nil:
+                       if c.expectRangeErr {
+                               t.Errorf("case %d (%s): expected range error, got none", i, c.prog)
+                       }
+               case ErrRange:
+                       if !c.expectRangeErr {
+                               t.Errorf("case %d (%s): got unexpected range error", i, c.prog)
+                       }
+               default:
+                       if c.expectRangeErr {
+                               t.Errorf("case %d (%s): expected range error, got %s", i, c.prog, err)
+                       } else {
+                               t.Errorf("case %d (%s): got unexpected error %s", i, c.prog, err)
+                       }
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/vm/ops.go b/vendor/github.com/bytom/protocol/vm/ops.go
new file mode 100644 (file)
index 0000000..8a2b6f3
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/ops.go
@@ -0,0 +1,490 @@
+package vm
+
+import (
+       "encoding/binary"
+       "fmt"
+       "math"
+       "reflect"
+
+       "github.com/bytom/errors"
+       "github.com/bytom/math/checked"
+)
+
+type Op uint8
+
+func (op Op) String() string {
+       return ops[op].name
+}
+
+type Instruction struct {
+       Op   Op
+       Len  uint32
+       Data []byte
+}
+
+const (
+       OP_FALSE Op = 0x00
+       OP_0     Op = 0x00 // synonym
+
+       OP_1    Op = 0x51
+       OP_TRUE Op = 0x51 // synonym
+
+       OP_2  Op = 0x52
+       OP_3  Op = 0x53
+       OP_4  Op = 0x54
+       OP_5  Op = 0x55
+       OP_6  Op = 0x56
+       OP_7  Op = 0x57
+       OP_8  Op = 0x58
+       OP_9  Op = 0x59
+       OP_10 Op = 0x5a
+       OP_11 Op = 0x5b
+       OP_12 Op = 0x5c
+       OP_13 Op = 0x5d
+       OP_14 Op = 0x5e
+       OP_15 Op = 0x5f
+       OP_16 Op = 0x60
+
+       OP_DATA_1  Op = 0x01
+       OP_DATA_2  Op = 0x02
+       OP_DATA_3  Op = 0x03
+       OP_DATA_4  Op = 0x04
+       OP_DATA_5  Op = 0x05
+       OP_DATA_6  Op = 0x06
+       OP_DATA_7  Op = 0x07
+       OP_DATA_8  Op = 0x08
+       OP_DATA_9  Op = 0x09
+       OP_DATA_10 Op = 0x0a
+       OP_DATA_11 Op = 0x0b
+       OP_DATA_12 Op = 0x0c
+       OP_DATA_13 Op = 0x0d
+       OP_DATA_14 Op = 0x0e
+       OP_DATA_15 Op = 0x0f
+       OP_DATA_16 Op = 0x10
+       OP_DATA_17 Op = 0x11
+       OP_DATA_18 Op = 0x12
+       OP_DATA_19 Op = 0x13
+       OP_DATA_20 Op = 0x14
+       OP_DATA_21 Op = 0x15
+       OP_DATA_22 Op = 0x16
+       OP_DATA_23 Op = 0x17
+       OP_DATA_24 Op = 0x18
+       OP_DATA_25 Op = 0x19
+       OP_DATA_26 Op = 0x1a
+       OP_DATA_27 Op = 0x1b
+       OP_DATA_28 Op = 0x1c
+       OP_DATA_29 Op = 0x1d
+       OP_DATA_30 Op = 0x1e
+       OP_DATA_31 Op = 0x1f
+       OP_DATA_32 Op = 0x20
+       OP_DATA_33 Op = 0x21
+       OP_DATA_34 Op = 0x22
+       OP_DATA_35 Op = 0x23
+       OP_DATA_36 Op = 0x24
+       OP_DATA_37 Op = 0x25
+       OP_DATA_38 Op = 0x26
+       OP_DATA_39 Op = 0x27
+       OP_DATA_40 Op = 0x28
+       OP_DATA_41 Op = 0x29
+       OP_DATA_42 Op = 0x2a
+       OP_DATA_43 Op = 0x2b
+       OP_DATA_44 Op = 0x2c
+       OP_DATA_45 Op = 0x2d
+       OP_DATA_46 Op = 0x2e
+       OP_DATA_47 Op = 0x2f
+       OP_DATA_48 Op = 0x30
+       OP_DATA_49 Op = 0x31
+       OP_DATA_50 Op = 0x32
+       OP_DATA_51 Op = 0x33
+       OP_DATA_52 Op = 0x34
+       OP_DATA_53 Op = 0x35
+       OP_DATA_54 Op = 0x36
+       OP_DATA_55 Op = 0x37
+       OP_DATA_56 Op = 0x38
+       OP_DATA_57 Op = 0x39
+       OP_DATA_58 Op = 0x3a
+       OP_DATA_59 Op = 0x3b
+       OP_DATA_60 Op = 0x3c
+       OP_DATA_61 Op = 0x3d
+       OP_DATA_62 Op = 0x3e
+       OP_DATA_63 Op = 0x3f
+       OP_DATA_64 Op = 0x40
+       OP_DATA_65 Op = 0x41
+       OP_DATA_66 Op = 0x42
+       OP_DATA_67 Op = 0x43
+       OP_DATA_68 Op = 0x44
+       OP_DATA_69 Op = 0x45
+       OP_DATA_70 Op = 0x46
+       OP_DATA_71 Op = 0x47
+       OP_DATA_72 Op = 0x48
+       OP_DATA_73 Op = 0x49
+       OP_DATA_74 Op = 0x4a
+       OP_DATA_75 Op = 0x4b
+
+       OP_PUSHDATA1 Op = 0x4c
+       OP_PUSHDATA2 Op = 0x4d
+       OP_PUSHDATA4 Op = 0x4e
+       OP_1NEGATE   Op = 0x4f
+       OP_NOP       Op = 0x61
+
+       OP_JUMP           Op = 0x63
+       OP_JUMPIF         Op = 0x64
+       OP_VERIFY         Op = 0x69
+       OP_FAIL           Op = 0x6a
+       OP_CHECKPREDICATE Op = 0xc0
+
+       OP_TOALTSTACK   Op = 0x6b
+       OP_FROMALTSTACK Op = 0x6c
+       OP_2DROP        Op = 0x6d
+       OP_2DUP         Op = 0x6e
+       OP_3DUP         Op = 0x6f
+       OP_2OVER        Op = 0x70
+       OP_2ROT         Op = 0x71
+       OP_2SWAP        Op = 0x72
+       OP_IFDUP        Op = 0x73
+       OP_DEPTH        Op = 0x74
+       OP_DROP         Op = 0x75
+       OP_DUP          Op = 0x76
+       OP_NIP          Op = 0x77
+       OP_OVER         Op = 0x78
+       OP_PICK         Op = 0x79
+       OP_ROLL         Op = 0x7a
+       OP_ROT          Op = 0x7b
+       OP_SWAP         Op = 0x7c
+       OP_TUCK         Op = 0x7d
+
+       OP_CAT         Op = 0x7e
+       OP_SUBSTR      Op = 0x7f
+       OP_LEFT        Op = 0x80
+       OP_RIGHT       Op = 0x81
+       OP_SIZE        Op = 0x82
+       OP_CATPUSHDATA Op = 0x89
+
+       OP_INVERT      Op = 0x83
+       OP_AND         Op = 0x84
+       OP_OR          Op = 0x85
+       OP_XOR         Op = 0x86
+       OP_EQUAL       Op = 0x87
+       OP_EQUALVERIFY Op = 0x88
+
+       OP_1ADD               Op = 0x8b
+       OP_1SUB               Op = 0x8c
+       OP_2MUL               Op = 0x8d
+       OP_2DIV               Op = 0x8e
+       OP_NEGATE             Op = 0x8f
+       OP_ABS                Op = 0x90
+       OP_NOT                Op = 0x91
+       OP_0NOTEQUAL          Op = 0x92
+       OP_ADD                Op = 0x93
+       OP_SUB                Op = 0x94
+       OP_MUL                Op = 0x95
+       OP_DIV                Op = 0x96
+       OP_MOD                Op = 0x97
+       OP_LSHIFT             Op = 0x98
+       OP_RSHIFT             Op = 0x99
+       OP_BOOLAND            Op = 0x9a
+       OP_BOOLOR             Op = 0x9b
+       OP_NUMEQUAL           Op = 0x9c
+       OP_NUMEQUALVERIFY     Op = 0x9d
+       OP_NUMNOTEQUAL        Op = 0x9e
+       OP_LESSTHAN           Op = 0x9f
+       OP_GREATERTHAN        Op = 0xa0
+       OP_LESSTHANOREQUAL    Op = 0xa1
+       OP_GREATERTHANOREQUAL Op = 0xa2
+       OP_MIN                Op = 0xa3
+       OP_MAX                Op = 0xa4
+       OP_WITHIN             Op = 0xa5
+
+       OP_SHA256        Op = 0xa8
+       OP_SHA3          Op = 0xaa
+       OP_HASH160       Op = 0xab
+       OP_CHECKSIG      Op = 0xac
+       OP_CHECKMULTISIG Op = 0xad
+       OP_TXSIGHASH     Op = 0xae
+
+       OP_CHECKOUTPUT Op = 0xc1
+       OP_ASSET       Op = 0xc2
+       OP_AMOUNT      Op = 0xc3
+       OP_PROGRAM     Op = 0xc4
+       OP_INDEX       Op = 0xc9
+       OP_ENTRYID     Op = 0xca
+       OP_OUTPUTID    Op = 0xcb
+       OP_BLOCKHEIGHT Op = 0xcd
+)
+
+type opInfo struct {
+       op   Op
+       name string
+       fn   func(*virtualMachine) error
+}
+
+var (
+       ops = [256]opInfo{
+               // data pushing
+               OP_FALSE: {OP_FALSE, "FALSE", opFalse},
+
+               // sic: the PUSHDATA ops all share an implementation
+               OP_PUSHDATA1: {OP_PUSHDATA1, "PUSHDATA1", opPushdata},
+               OP_PUSHDATA2: {OP_PUSHDATA2, "PUSHDATA2", opPushdata},
+               OP_PUSHDATA4: {OP_PUSHDATA4, "PUSHDATA4", opPushdata},
+
+               OP_1NEGATE: {OP_1NEGATE, "1NEGATE", op1Negate},
+
+               OP_NOP: {OP_NOP, "NOP", opNop},
+
+               // control flow
+               OP_JUMP:   {OP_JUMP, "JUMP", opJump},
+               OP_JUMPIF: {OP_JUMPIF, "JUMPIF", opJumpIf},
+
+               OP_VERIFY: {OP_VERIFY, "VERIFY", opVerify},
+               OP_FAIL:   {OP_FAIL, "FAIL", opFail},
+
+               OP_TOALTSTACK:   {OP_TOALTSTACK, "TOALTSTACK", opToAltStack},
+               OP_FROMALTSTACK: {OP_FROMALTSTACK, "FROMALTSTACK", opFromAltStack},
+               OP_2DROP:        {OP_2DROP, "2DROP", op2Drop},
+               OP_2DUP:         {OP_2DUP, "2DUP", op2Dup},
+               OP_3DUP:         {OP_3DUP, "3DUP", op3Dup},
+               OP_2OVER:        {OP_2OVER, "2OVER", op2Over},
+               OP_2ROT:         {OP_2ROT, "2ROT", op2Rot},
+               OP_2SWAP:        {OP_2SWAP, "2SWAP", op2Swap},
+               OP_IFDUP:        {OP_IFDUP, "IFDUP", opIfDup},
+               OP_DEPTH:        {OP_DEPTH, "DEPTH", opDepth},
+               OP_DROP:         {OP_DROP, "DROP", opDrop},
+               OP_DUP:          {OP_DUP, "DUP", opDup},
+               OP_NIP:          {OP_NIP, "NIP", opNip},
+               OP_OVER:         {OP_OVER, "OVER", opOver},
+               OP_PICK:         {OP_PICK, "PICK", opPick},
+               OP_ROLL:         {OP_ROLL, "ROLL", opRoll},
+               OP_ROT:          {OP_ROT, "ROT", opRot},
+               OP_SWAP:         {OP_SWAP, "SWAP", opSwap},
+               OP_TUCK:         {OP_TUCK, "TUCK", opTuck},
+
+               OP_CAT:         {OP_CAT, "CAT", opCat},
+               OP_SUBSTR:      {OP_SUBSTR, "SUBSTR", opSubstr},
+               OP_LEFT:        {OP_LEFT, "LEFT", opLeft},
+               OP_RIGHT:       {OP_RIGHT, "RIGHT", opRight},
+               OP_SIZE:        {OP_SIZE, "SIZE", opSize},
+               OP_CATPUSHDATA: {OP_CATPUSHDATA, "CATPUSHDATA", opCatpushdata},
+
+               OP_INVERT:      {OP_INVERT, "INVERT", opInvert},
+               OP_AND:         {OP_AND, "AND", opAnd},
+               OP_OR:          {OP_OR, "OR", opOr},
+               OP_XOR:         {OP_XOR, "XOR", opXor},
+               OP_EQUAL:       {OP_EQUAL, "EQUAL", opEqual},
+               OP_EQUALVERIFY: {OP_EQUALVERIFY, "EQUALVERIFY", opEqualVerify},
+
+               OP_1ADD:               {OP_1ADD, "1ADD", op1Add},
+               OP_1SUB:               {OP_1SUB, "1SUB", op1Sub},
+               OP_2MUL:               {OP_2MUL, "2MUL", op2Mul},
+               OP_2DIV:               {OP_2DIV, "2DIV", op2Div},
+               OP_NEGATE:             {OP_NEGATE, "NEGATE", opNegate},
+               OP_ABS:                {OP_ABS, "ABS", opAbs},
+               OP_NOT:                {OP_NOT, "NOT", opNot},
+               OP_0NOTEQUAL:          {OP_0NOTEQUAL, "0NOTEQUAL", op0NotEqual},
+               OP_ADD:                {OP_ADD, "ADD", opAdd},
+               OP_SUB:                {OP_SUB, "SUB", opSub},
+               OP_MUL:                {OP_MUL, "MUL", opMul},
+               OP_DIV:                {OP_DIV, "DIV", opDiv},
+               OP_MOD:                {OP_MOD, "MOD", opMod},
+               OP_LSHIFT:             {OP_LSHIFT, "LSHIFT", opLshift},
+               OP_RSHIFT:             {OP_RSHIFT, "RSHIFT", opRshift},
+               OP_BOOLAND:            {OP_BOOLAND, "BOOLAND", opBoolAnd},
+               OP_BOOLOR:             {OP_BOOLOR, "BOOLOR", opBoolOr},
+               OP_NUMEQUAL:           {OP_NUMEQUAL, "NUMEQUAL", opNumEqual},
+               OP_NUMEQUALVERIFY:     {OP_NUMEQUALVERIFY, "NUMEQUALVERIFY", opNumEqualVerify},
+               OP_NUMNOTEQUAL:        {OP_NUMNOTEQUAL, "NUMNOTEQUAL", opNumNotEqual},
+               OP_LESSTHAN:           {OP_LESSTHAN, "LESSTHAN", opLessThan},
+               OP_GREATERTHAN:        {OP_GREATERTHAN, "GREATERTHAN", opGreaterThan},
+               OP_LESSTHANOREQUAL:    {OP_LESSTHANOREQUAL, "LESSTHANOREQUAL", opLessThanOrEqual},
+               OP_GREATERTHANOREQUAL: {OP_GREATERTHANOREQUAL, "GREATERTHANOREQUAL", opGreaterThanOrEqual},
+               OP_MIN:                {OP_MIN, "MIN", opMin},
+               OP_MAX:                {OP_MAX, "MAX", opMax},
+               OP_WITHIN:             {OP_WITHIN, "WITHIN", opWithin},
+
+               OP_SHA256:        {OP_SHA256, "SHA256", opSha256},
+               OP_SHA3:          {OP_SHA3, "SHA3", opSha3},
+               OP_HASH160:       {OP_HASH160, "HASH160", opHash160},
+               OP_CHECKSIG:      {OP_CHECKSIG, "CHECKSIG", opCheckSig},
+               OP_CHECKMULTISIG: {OP_CHECKMULTISIG, "CHECKMULTISIG", opCheckMultiSig},
+               OP_TXSIGHASH:     {OP_TXSIGHASH, "TXSIGHASH", opTxSigHash},
+
+               OP_CHECKOUTPUT: {OP_CHECKOUTPUT, "CHECKOUTPUT", opCheckOutput},
+               OP_ASSET:       {OP_ASSET, "ASSET", opAsset},
+               OP_AMOUNT:      {OP_AMOUNT, "AMOUNT", opAmount},
+               OP_PROGRAM:     {OP_PROGRAM, "PROGRAM", opProgram},
+               OP_INDEX:       {OP_INDEX, "INDEX", opIndex},
+               OP_ENTRYID:     {OP_ENTRYID, "ENTRYID", opEntryID},
+               OP_OUTPUTID:    {OP_OUTPUTID, "OUTPUTID", opOutputID},
+               OP_BLOCKHEIGHT: {OP_BLOCKHEIGHT, "BLOCKHEIGHT", opBlockHeight},
+       }
+
+       opsByName map[string]opInfo
+)
+
+// ParseOp parses the op at position pc in prog, returning the parsed
+// instruction (opcode plus any associated data).
+func ParseOp(prog []byte, pc uint32) (inst Instruction, err error) {
+       if len(prog) > math.MaxInt32 {
+               err = ErrLongProgram
+       }
+       l := uint32(len(prog))
+       if pc >= l {
+               err = ErrShortProgram
+               return
+       }
+       opcode := Op(prog[pc])
+       inst.Op = opcode
+       inst.Len = 1
+       if opcode >= OP_1 && opcode <= OP_16 {
+               inst.Data = []byte{uint8(opcode-OP_1) + 1}
+               return
+       }
+       if opcode >= OP_DATA_1 && opcode <= OP_DATA_75 {
+               inst.Len += uint32(opcode - OP_DATA_1 + 1)
+               end, ok := checked.AddUint32(pc, inst.Len)
+               if !ok {
+                       err = errors.WithDetail(checked.ErrOverflow, "data length exceeds max program size")
+                       return
+               }
+               if end > l {
+                       err = ErrShortProgram
+                       return
+               }
+               inst.Data = prog[pc+1 : end]
+               return
+       }
+       if opcode == OP_PUSHDATA1 {
+               if pc == l-1 {
+                       err = ErrShortProgram
+                       return
+               }
+               n := prog[pc+1]
+               inst.Len += uint32(n) + 1
+               end, ok := checked.AddUint32(pc, inst.Len)
+               if !ok {
+                       err = errors.WithDetail(checked.ErrOverflow, "data length exceeds max program size")
+               }
+               if end > l {
+                       err = ErrShortProgram
+                       return
+               }
+               inst.Data = prog[pc+2 : end]
+               return
+       }
+       if opcode == OP_PUSHDATA2 {
+               if len(prog) < 3 || pc > l-3 {
+                       err = ErrShortProgram
+                       return
+               }
+               n := binary.LittleEndian.Uint16(prog[pc+1 : pc+3])
+               inst.Len += uint32(n) + 2
+               end, ok := checked.AddUint32(pc, inst.Len)
+               if !ok {
+                       err = errors.WithDetail(checked.ErrOverflow, "data length exceeds max program size")
+                       return
+               }
+               if end > l {
+                       err = ErrShortProgram
+                       return
+               }
+               inst.Data = prog[pc+3 : end]
+               return
+       }
+       if opcode == OP_PUSHDATA4 {
+               if len(prog) < 5 || pc > l-5 {
+                       err = ErrShortProgram
+                       return
+               }
+               inst.Len += 4
+
+               n := binary.LittleEndian.Uint32(prog[pc+1 : pc+5])
+               var ok bool
+               inst.Len, ok = checked.AddUint32(inst.Len, n)
+               if !ok {
+                       err = errors.WithDetail(checked.ErrOverflow, "data length exceeds max program size")
+                       return
+               }
+               end, ok := checked.AddUint32(pc, inst.Len)
+               if !ok {
+                       err = errors.WithDetail(checked.ErrOverflow, "data length exceeds max program size")
+                       return
+               }
+               if end > l {
+                       err = ErrShortProgram
+                       return
+               }
+               inst.Data = prog[pc+5 : end]
+               return
+       }
+       if opcode == OP_JUMP || opcode == OP_JUMPIF {
+               inst.Len += 4
+               end, ok := checked.AddUint32(pc, inst.Len)
+               if !ok {
+                       err = errors.WithDetail(checked.ErrOverflow, "jump target exceeds max program size")
+                       return
+               }
+               if end > l {
+                       err = ErrShortProgram
+                       return
+               }
+               inst.Data = prog[pc+1 : end]
+               return
+       }
+       return
+}
+
+func ParseProgram(prog []byte) ([]Instruction, error) {
+       var result []Instruction
+       for pc := uint32(0); pc < uint32(len(prog)); { // update pc inside the loop
+               inst, err := ParseOp(prog, pc)
+               if err != nil {
+                       return nil, err
+               }
+               result = append(result, inst)
+               var ok bool
+               pc, ok = checked.AddUint32(pc, inst.Len)
+               if !ok {
+                       return nil, errors.WithDetail(checked.ErrOverflow, "program counter exceeds max program size")
+               }
+       }
+       return result, nil
+}
+
+var isExpansion [256]bool
+
+func init() {
+       for i := 1; i <= 75; i++ {
+               ops[i] = opInfo{Op(i), fmt.Sprintf("DATA_%d", i), opPushdata}
+       }
+       for i := uint8(0); i <= 15; i++ {
+               op := uint8(OP_1) + i
+               ops[op] = opInfo{Op(op), fmt.Sprintf("%d", i+1), opPushdata}
+       }
+
+       // This is here to break a dependency cycle
+       ops[OP_CHECKPREDICATE] = opInfo{OP_CHECKPREDICATE, "CHECKPREDICATE", opCheckPredicate}
+
+       opsByName = make(map[string]opInfo)
+       for _, info := range ops {
+               opsByName[info.name] = info
+       }
+       opsByName["0"] = ops[OP_FALSE]
+       opsByName["TRUE"] = ops[OP_1]
+
+       for i := 0; i <= 255; i++ {
+               if ops[i].name == "" {
+                       ops[i] = opInfo{Op(i), fmt.Sprintf("NOPx%02x", i), opNop}
+                       isExpansion[i] = true
+               }
+       }
+}
+
+// IsPushdata judge instruction whether is a pushdata operation(include opFalse operation)
+func (inst *Instruction) IsPushdata() bool {
+       if reflect.ValueOf(ops[inst.Op].fn) == reflect.ValueOf(ops[OP_1].fn) ||
+               reflect.ValueOf(ops[inst.Op].fn) == reflect.ValueOf(ops[OP_0].fn) {
+               return true
+       }
+
+       return false
+}

diff --git a/vendor/github.com/bytom/protocol/vm/ops_test.go b/vendor/github.com/bytom/protocol/vm/ops_test.go
new file mode 100644 (file)
index 0000000..da09cf8
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/ops_test.go
@@ -0,0 +1,179 @@
+package vm
+
+import (
+       "fmt"
+       "reflect"
+       "testing"
+
+       "github.com/bytom/errors"
+       "github.com/bytom/math/checked"
+       "github.com/bytom/testutil"
+)
+
+func TestParseOp(t *testing.T) {
+       cases := []struct {
+               prog    []byte
+               pc      uint32
+               want    Instruction
+               wantErr error
+       }{{
+               prog: []byte{byte(OP_ADD)},
+               want: Instruction{Op: OP_ADD, Len: 1},
+       }, {
+               prog: []byte{byte(OP_16)},
+               want: Instruction{Op: OP_16, Data: []byte{16}, Len: 1},
+       }, {
+               prog: []byte{byte(OP_DATA_5), 1, 1, 1, 1, 1},
+               want: Instruction{Op: OP_DATA_5, Data: []byte{1, 1, 1, 1, 1}, Len: 6},
+       }, {
+               prog: []byte{byte(OP_DATA_5), 1, 1, 1, 1, 1, 255},
+               want: Instruction{Op: OP_DATA_5, Data: []byte{1, 1, 1, 1, 1}, Len: 6},
+       }, {
+               prog: []byte{byte(OP_PUSHDATA1), 1, 1},
+               want: Instruction{Op: OP_PUSHDATA1, Data: []byte{1}, Len: 3},
+       }, {
+               prog: []byte{byte(OP_PUSHDATA1), 1, 1, 255},
+               want: Instruction{Op: OP_PUSHDATA1, Data: []byte{1}, Len: 3},
+       }, {
+               prog: []byte{byte(OP_PUSHDATA2), 1, 0, 1},
+               want: Instruction{Op: OP_PUSHDATA2, Data: []byte{1}, Len: 4},
+       }, {
+               prog: []byte{byte(OP_PUSHDATA2), 1, 0, 1, 255},
+               want: Instruction{Op: OP_PUSHDATA2, Data: []byte{1}, Len: 4},
+       }, {
+               prog: []byte{byte(OP_PUSHDATA4), 1, 0, 0, 0, 1},
+               want: Instruction{Op: OP_PUSHDATA4, Data: []byte{1}, Len: 6},
+       }, {
+               prog: []byte{byte(OP_PUSHDATA4), 1, 0, 0, 0, 1, 255},
+               want: Instruction{Op: OP_PUSHDATA4, Data: []byte{1}, Len: 6},
+       }, {
+               prog:    []byte{},
+               wantErr: ErrShortProgram,
+       }, {
+               prog:    []byte{byte(OP_0)},
+               pc:      1,
+               wantErr: ErrShortProgram,
+       }, {
+               prog:    []byte{byte(OP_DATA_1)},
+               wantErr: ErrShortProgram,
+       }, {
+               prog:    []byte{byte(OP_PUSHDATA1)},
+               wantErr: ErrShortProgram,
+       }, {
+               prog:    []byte{byte(OP_PUSHDATA1), 1},
+               wantErr: ErrShortProgram,
+       }, {
+               prog:    []byte{byte(OP_PUSHDATA2)},
+               wantErr: ErrShortProgram,
+       }, {
+               prog:    []byte{byte(OP_PUSHDATA2), 1, 0},
+               wantErr: ErrShortProgram,
+       }, {
+               prog:    []byte{byte(OP_PUSHDATA4)},
+               wantErr: ErrShortProgram,
+       }, {
+               prog:    []byte{byte(OP_PUSHDATA4), 1, 0, 0, 0},
+               wantErr: ErrShortProgram,
+       }, {
+               pc:      71,
+               prog:    []byte{0x6d, 0x6b, 0xaa, 0x20, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x20, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x0, 0x0, 0x4e, 0xff, 0xff, 0xff, 0xff, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30},
+               wantErr: checked.ErrOverflow,
+       }}
+
+       for _, c := range cases {
+               t.Run(fmt.Sprintf("%d: %x", c.pc, c.prog), func(t *testing.T) {
+                       got, gotErr := ParseOp(c.prog, c.pc)
+
+                       if errors.Root(gotErr) != c.wantErr {
+                               t.Errorf("ParseOp(%x, %d) error = %v want %v", c.prog, c.pc, gotErr, c.wantErr)
+                       }
+
+                       if c.wantErr != nil {
+                               return
+                       }
+
+                       if !testutil.DeepEqual(got, c.want) {
+                               t.Errorf("ParseOp(%x, %d) = %+v want %+v", c.prog, c.pc, got, c.want)
+                       }
+               })
+       }
+}
+
+func TestParseProgram(t *testing.T) {
+       cases := []struct {
+               prog    []byte
+               want    []Instruction
+               wantErr error
+       }{
+               {
+                       prog: []byte{byte(OP_2), byte(OP_3), byte(OP_ADD), byte(OP_5), byte(OP_NUMEQUAL)},
+                       want: []Instruction{
+                               {Op: OP_2, Data: []byte{0x02}, Len: 1},
+                               {Op: OP_3, Data: []byte{0x03}, Len: 1},
+                               {Op: OP_ADD, Len: 1},
+                               {Op: OP_5, Data: []byte{0x05}, Len: 1},
+                               {Op: OP_NUMEQUAL, Len: 1},
+                       },
+               },
+               {
+                       prog: []byte{255},
+                       want: []Instruction{
+                               {Op: 255, Len: 1},
+                       },
+               },
+       }
+
+       for _, c := range cases {
+               got, gotErr := ParseProgram(c.prog)
+
+               if errors.Root(gotErr) != c.wantErr {
+                       t.Errorf("ParseProgram(%x) error = %v want %v", c.prog, gotErr, c.wantErr)
+               }
+
+               if c.wantErr != nil {
+                       continue
+               }
+
+               if !testutil.DeepEqual(got, c.want) {
+                       t.Errorf("ParseProgram(%x) = %+v want %+v", c.prog, got, c.want)
+               }
+       }
+}
+
+func TestIsPushData(t *testing.T) {
+       cases := []struct {
+               want    Instruction
+               wantErr error
+       }{
+               {
+                       want: Instruction{Op: OP_16, Data: []byte{16}, Len: 1},
+               },
+               {
+                       want: Instruction{Op: OP_DATA_32, Data: []byte{16}, Len: 1},
+               },
+               {
+                       want: Instruction{Op: OP_FALSE, Data: []byte{}, Len: 1},
+               },
+               {
+                       want: Instruction{Op: OP_TRUE, Data: []byte{1}, Len: 1},
+               },
+               {
+                       want:    Instruction{Op: OP_JUMP, Data: []byte{0x00000000}, Len: 1},
+                       wantErr: ErrShortProgram,
+               },
+               {
+                       want:    Instruction{Op: OP_ADD, Data: []byte{0x12, 0x56}, Len: 2},
+                       wantErr: ErrShortProgram,
+               },
+       }
+
+       for _, c := range cases {
+               if c.want.IsPushdata() {
+                       t.Logf("check success")
+               } else if c.wantErr != nil {
+                       t.Logf("check err success")
+               } else {
+                       t.Errorf("check false: %v -- %v", reflect.ValueOf(ops[OP_1].fn), reflect.ValueOf(ops[c.want.Op].fn))
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/vm/pushdata.go b/vendor/github.com/bytom/protocol/vm/pushdata.go
new file mode 100644 (file)
index 0000000..0edf329
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/pushdata.go
@@ -0,0 +1,64 @@
+package vm
+
+import "encoding/binary"
+
+func opFalse(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       return vm.pushBool(false, false)
+}
+
+func opPushdata(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       d := make([]byte, len(vm.data))
+       copy(d, vm.data)
+       return vm.push(d, false)
+}
+
+func op1Negate(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       return vm.pushInt64(-1, false)
+}
+
+func opNop(vm *virtualMachine) error {
+       return vm.applyCost(1)
+}
+
+func PushdataBytes(in []byte) []byte {
+       l := len(in)
+       if l == 0 {
+               return []byte{byte(OP_0)}
+       }
+       if l <= 75 {
+               return append([]byte{byte(OP_DATA_1) + uint8(l) - 1}, in...)
+       }
+       if l < 1<<8 {
+               return append([]byte{byte(OP_PUSHDATA1), uint8(l)}, in...)
+       }
+       if l < 1<<16 {
+               var b [2]byte
+               binary.LittleEndian.PutUint16(b[:], uint16(l))
+               return append([]byte{byte(OP_PUSHDATA2), b[0], b[1]}, in...)
+       }
+       var b [4]byte
+       binary.LittleEndian.PutUint32(b[:], uint32(l))
+       return append([]byte{byte(OP_PUSHDATA4), b[0], b[1], b[2], b[3]}, in...)
+}
+
+func PushdataInt64(n int64) []byte {
+       if n == 0 {
+               return []byte{byte(OP_0)}
+       }
+       if n >= 1 && n <= 16 {
+               return []byte{uint8(OP_1) + uint8(n) - 1}
+       }
+       return PushdataBytes(Int64Bytes(n))
+}

diff --git a/vendor/github.com/bytom/protocol/vm/pushdata_test.go b/vendor/github.com/bytom/protocol/vm/pushdata_test.go
new file mode 100644 (file)
index 0000000..25c2523
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/pushdata_test.go
@@ -0,0 +1,188 @@
+package vm
+
+import (
+       "bytes"
+       "testing"
+
+       "github.com/bytom/testutil"
+)
+
+func TestPushdataOps(t *testing.T) {
+       type testStruct struct {
+               op      Op
+               startVM *virtualMachine
+               wantErr error
+               wantVM  *virtualMachine
+       }
+       cases := []testStruct{{
+               op: OP_FALSE,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49991,
+                       dataStack: [][]byte{{}},
+               },
+       }, {
+               op: OP_FALSE,
+               startVM: &virtualMachine{
+                       runLimit:  1,
+                       dataStack: [][]byte{},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_1NEGATE,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49983,
+                       dataStack: [][]byte{Int64Bytes(-1)},
+               },
+       }, {
+               op: OP_1NEGATE,
+               startVM: &virtualMachine{
+                       runLimit:  1,
+                       dataStack: [][]byte{},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }}
+
+       pushdataops := []Op{OP_PUSHDATA1, OP_PUSHDATA2, OP_PUSHDATA4}
+       for i := 1; i <= 75; i++ {
+               pushdataops = append(pushdataops, Op(i))
+       }
+       for _, op := range pushdataops {
+               cases = append(cases, testStruct{
+                       op: op,
+                       startVM: &virtualMachine{
+                               runLimit:  50000,
+                               dataStack: [][]byte{},
+                               data:      []byte("data"),
+                       },
+                       wantVM: &virtualMachine{
+                               runLimit:  49987,
+                               dataStack: [][]byte{[]byte("data")},
+                               data:      []byte("data"),
+                       },
+               }, testStruct{
+                       op: op,
+                       startVM: &virtualMachine{
+                               runLimit:  1,
+                               dataStack: [][]byte{},
+                               data:      []byte("data"),
+                       },
+                       wantErr: ErrRunLimitExceeded,
+               })
+       }
+
+       pushops := append(pushdataops, OP_FALSE, OP_1NEGATE, OP_NOP)
+       for _, op := range pushops {
+               cases = append(cases, testStruct{
+                       op: op,
+                       startVM: &virtualMachine{
+                               runLimit:  0,
+                               dataStack: [][]byte{},
+                       },
+                       wantErr: ErrRunLimitExceeded,
+               })
+       }
+
+       for i, c := range cases {
+               err := ops[c.op].fn(c.startVM)
+
+               if err != c.wantErr {
+                       t.Errorf("case %d, op %s: got err = %v want %v", i, ops[c.op].name, err, c.wantErr)
+                       continue
+               }
+               if c.wantErr != nil {
+                       continue
+               }
+
+               if !testutil.DeepEqual(c.startVM, c.wantVM) {
+                       t.Errorf("case %d, op %s: unexpected vm result\n\tgot:  %+v\n\twant: %+v\n", i, ops[c.op].name, c.startVM, c.wantVM)
+               }
+       }
+}
+
+func TestPushDataBytes(t *testing.T) {
+       type test struct {
+               data []byte
+               want []byte
+       }
+       cases := []test{{
+               data: nil,
+               want: []byte{byte(OP_0)},
+       }, {
+               data: make([]byte, 255),
+               want: append([]byte{byte(OP_PUSHDATA1), 0xff}, make([]byte, 255)...),
+       }, {
+               data: make([]byte, 1<<8),
+               want: append([]byte{byte(OP_PUSHDATA2), 0, 1}, make([]byte, 1<<8)...),
+       }, {
+               data: make([]byte, 1<<16),
+               want: append([]byte{byte(OP_PUSHDATA4), 0, 0, 1, 0}, make([]byte, 1<<16)...),
+       }}
+
+       for i := 1; i <= 75; i++ {
+               cases = append(cases, test{
+                       data: make([]byte, i),
+                       want: append([]byte{byte(OP_DATA_1) - 1 + byte(i)}, make([]byte, i)...),
+               })
+       }
+
+       for _, c := range cases {
+               got := PushdataBytes(c.data)
+
+               dl := len(c.data)
+               if dl > 10 {
+                       dl = 10
+               }
+               if !bytes.Equal(got, c.want) {
+                       t.Errorf("PushdataBytes(%x...) = %x...[%d] want %x...[%d]", c.data[:dl], got[:dl], len(got), c.want[:dl], len(c.want))
+               }
+       }
+}
+
+func TestPushdataInt64(t *testing.T) {
+       type test struct {
+               num  int64
+               want []byte
+       }
+       cases := []test{{
+               num:  0,
+               want: []byte{byte(OP_0)},
+       }, {
+               num:  17,
+               want: []byte{byte(OP_DATA_1), 0x11},
+       }, {
+               num:  255,
+               want: []byte{byte(OP_DATA_1), 0xff},
+       }, {
+               num:  256,
+               want: []byte{byte(OP_DATA_2), 0x00, 0x01},
+       }, {
+               num:  -1,
+               want: []byte{byte(OP_DATA_8), 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+       }, {
+               num:  -2,
+               want: []byte{byte(OP_DATA_8), 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+       }}
+
+       for i := 1; i <= 16; i++ {
+               cases = append(cases, test{
+                       num:  int64(i),
+                       want: []byte{byte(OP_1) - 1 + byte(i)},
+               })
+       }
+
+       for _, c := range cases {
+               got := PushdataInt64(c.num)
+
+               if !bytes.Equal(got, c.want) {
+                       t.Errorf("PushdataInt64(%d) = %x want %x", c.num, got, c.want)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/vm/splice.go b/vendor/github.com/bytom/protocol/vm/splice.go
new file mode 100644 (file)
index 0000000..b426cb4
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/splice.go
@@ -0,0 +1,170 @@
+package vm
+
+import "github.com/bytom/math/checked"
+
+func opCat(vm *virtualMachine) error {
+       err := vm.applyCost(4)
+       if err != nil {
+               return err
+       }
+       b, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       a, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       lens := int64(len(a) + len(b))
+       err = vm.applyCost(lens)
+       if err != nil {
+               return err
+       }
+       vm.deferCost(-lens)
+       err = vm.push(append(a, b...), true)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func opSubstr(vm *virtualMachine) error {
+       err := vm.applyCost(4)
+       if err != nil {
+               return err
+       }
+       size, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if size < 0 {
+               return ErrBadValue
+       }
+       err = vm.applyCost(size)
+       if err != nil {
+               return err
+       }
+       vm.deferCost(-size)
+       offset, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if offset < 0 {
+               return ErrBadValue
+       }
+       str, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       end, ok := checked.AddInt64(offset, size)
+       if !ok || end > int64(len(str)) {
+               return ErrBadValue
+       }
+       err = vm.push(str[offset:end], true)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func opLeft(vm *virtualMachine) error {
+       err := vm.applyCost(4)
+       if err != nil {
+               return err
+       }
+       size, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if size < 0 {
+               return ErrBadValue
+       }
+       err = vm.applyCost(size)
+       if err != nil {
+               return err
+       }
+       vm.deferCost(-size)
+       str, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       if size > int64(len(str)) {
+               return ErrBadValue
+       }
+       err = vm.push(str[:size], true)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func opRight(vm *virtualMachine) error {
+       err := vm.applyCost(4)
+       if err != nil {
+               return err
+       }
+       size, err := vm.popInt64(true)
+       if err != nil {
+               return err
+       }
+       if size < 0 {
+               return ErrBadValue
+       }
+       err = vm.applyCost(size)
+       if err != nil {
+               return err
+       }
+       vm.deferCost(-size)
+       str, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       lstr := int64(len(str))
+       if size > lstr {
+               return ErrBadValue
+       }
+       err = vm.push(str[lstr-size:], true)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func opSize(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       str, err := vm.top()
+       if err != nil {
+               return err
+       }
+       err = vm.pushInt64(int64(len(str)), true)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func opCatpushdata(vm *virtualMachine) error {
+       err := vm.applyCost(4)
+       if err != nil {
+               return err
+       }
+       b, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       a, err := vm.pop(true)
+       if err != nil {
+               return err
+       }
+       lb := len(b)
+       lens := int64(len(a) + lb)
+       err = vm.applyCost(lens)
+       if err != nil {
+               return err
+       }
+       vm.deferCost(-lens)
+       return vm.push(append(a, PushdataBytes(b)...), true)
+}

diff --git a/vendor/github.com/bytom/protocol/vm/splice_test.go b/vendor/github.com/bytom/protocol/vm/splice_test.go
new file mode 100644 (file)
index 0000000..dcc3b1c
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/splice_test.go
@@ -0,0 +1,192 @@
+package vm
+
+import (
+       "testing"
+
+       "github.com/bytom/testutil"
+)
+
+func TestSpliceOps(t *testing.T) {
+       type testStruct struct {
+               op      Op
+               startVM *virtualMachine
+               wantErr error
+               wantVM  *virtualMachine
+       }
+       cases := []testStruct{{
+               op: OP_CAT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("hello"), []byte("world")},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49986,
+                       deferredCost: -18,
+                       dataStack:    [][]byte{[]byte("helloworld")},
+               },
+       }, {
+               op: OP_CAT,
+               startVM: &virtualMachine{
+                       runLimit:  4,
+                       dataStack: [][]byte{[]byte("hello"), []byte("world")},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_SUBSTR,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("helloworld"), {3}, {5}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49991,
+                       deferredCost: -28,
+                       dataStack:    [][]byte{[]byte("lowor")},
+               },
+       }, {
+               op: OP_SUBSTR,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("helloworld"), {3}, Int64Bytes(-1)},
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_SUBSTR,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("helloworld"), Int64Bytes(-1), {5}},
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_SUBSTR,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("helloworld"), {6}, {5}},
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_SUBSTR,
+               startVM: &virtualMachine{
+                       runLimit:  4,
+                       dataStack: [][]byte{[]byte("helloworld"), {3}, {5}},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_LEFT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("helloworld"), {5}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49991,
+                       deferredCost: -19,
+                       dataStack:    [][]byte{[]byte("hello")},
+               },
+       }, {
+               op: OP_LEFT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("helloworld"), Int64Bytes(-1)},
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_LEFT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("helloworld"), {11}},
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_LEFT,
+               startVM: &virtualMachine{
+                       runLimit:  4,
+                       dataStack: [][]byte{[]byte("helloworld"), {5}},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_RIGHT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("helloworld"), {5}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49991,
+                       deferredCost: -19,
+                       dataStack:    [][]byte{[]byte("world")},
+               },
+       }, {
+               op: OP_RIGHT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("helloworld"), Int64Bytes(-1)},
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_RIGHT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("helloworld"), {11}},
+               },
+               wantErr: ErrBadValue,
+       }, {
+               op: OP_RIGHT,
+               startVM: &virtualMachine{
+                       runLimit:  4,
+                       dataStack: [][]byte{[]byte("helloworld"), {5}},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_SIZE,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{[]byte("helloworld")},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49999,
+                       deferredCost: 9,
+                       dataStack:    [][]byte{[]byte("helloworld"), {10}},
+               },
+       }, {
+               op: OP_CATPUSHDATA,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{0xff}, {0xab, 0xcd}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:     49993,
+                       deferredCost: -10,
+                       dataStack:    [][]byte{{0xff, 0x02, 0xab, 0xcd}},
+               },
+       }, {
+               op: OP_CATPUSHDATA,
+               startVM: &virtualMachine{
+                       runLimit:  4,
+                       dataStack: [][]byte{{0xff}, {0xab, 0xcd}},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }}
+
+       spliceops := []Op{OP_CAT, OP_SUBSTR, OP_LEFT, OP_RIGHT, OP_CATPUSHDATA, OP_SIZE}
+       for _, op := range spliceops {
+               cases = append(cases, testStruct{
+                       op:      op,
+                       startVM: &virtualMachine{runLimit: 0},
+                       wantErr: ErrRunLimitExceeded,
+               })
+       }
+
+       for i, c := range cases {
+               err := ops[c.op].fn(c.startVM)
+
+               if err != c.wantErr {
+                       t.Errorf("case %d, op %s: got err = %v want %v", i, ops[c.op].name, err, c.wantErr)
+                       continue
+               }
+               if c.wantErr != nil {
+                       continue
+               }
+
+               if !testutil.DeepEqual(c.startVM, c.wantVM) {
+                       t.Errorf("case %d, op %s: unexpected vm result\n\tgot:  %+v\n\twant: %+v\n", i, ops[c.op].name, c.startVM, c.wantVM)
+               }
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/vm/stack.go b/vendor/github.com/bytom/protocol/vm/stack.go
new file mode 100644 (file)
index 0000000..0c72755
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/stack.go
@@ -0,0 +1,312 @@
+package vm
+
+import "github.com/bytom/math/checked"
+
+func opToAltStack(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       if len(vm.dataStack) == 0 {
+               return ErrDataStackUnderflow
+       }
+       // no standard memory cost accounting here
+       vm.altStack = append(vm.altStack, vm.dataStack[len(vm.dataStack)-1])
+       vm.dataStack = vm.dataStack[:len(vm.dataStack)-1]
+       return nil
+}
+
+func opFromAltStack(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       if len(vm.altStack) == 0 {
+               return ErrAltStackUnderflow
+       }
+       // no standard memory cost accounting here
+       vm.dataStack = append(vm.dataStack, vm.altStack[len(vm.altStack)-1])
+       vm.altStack = vm.altStack[:len(vm.altStack)-1]
+       return nil
+}
+
+func op2Drop(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       for i := 0; i < 2; i++ {
+               _, err = vm.pop(false)
+               if err != nil {
+                       return err
+               }
+       }
+       return nil
+}
+
+func op2Dup(vm *virtualMachine) error {
+       return nDup(vm, 2)
+}
+
+func op3Dup(vm *virtualMachine) error {
+       return nDup(vm, 3)
+}
+
+func nDup(vm *virtualMachine, n int) error {
+       err := vm.applyCost(int64(n))
+       if err != nil {
+               return err
+       }
+       if len(vm.dataStack) < n {
+               return ErrDataStackUnderflow
+       }
+       for i := 0; i < n; i++ {
+               err = vm.push(vm.dataStack[len(vm.dataStack)-n], false)
+               if err != nil {
+                       return err
+               }
+       }
+       return nil
+}
+
+func op2Over(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       if len(vm.dataStack) < 4 {
+               return ErrDataStackUnderflow
+       }
+       for i := 0; i < 2; i++ {
+               err = vm.push(vm.dataStack[len(vm.dataStack)-4], false)
+               if err != nil {
+                       return err
+               }
+       }
+       return nil
+}
+
+func op2Rot(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       if len(vm.dataStack) < 6 {
+               return ErrDataStackUnderflow
+       }
+       newStack := make([][]byte, 0, len(vm.dataStack))
+       newStack = append(newStack, vm.dataStack[:len(vm.dataStack)-6]...)
+       newStack = append(newStack, vm.dataStack[len(vm.dataStack)-4:]...)
+       newStack = append(newStack, vm.dataStack[len(vm.dataStack)-6])
+       newStack = append(newStack, vm.dataStack[len(vm.dataStack)-5])
+       vm.dataStack = newStack
+       return nil
+}
+
+func op2Swap(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       if len(vm.dataStack) < 4 {
+               return ErrDataStackUnderflow
+       }
+       newStack := make([][]byte, 0, len(vm.dataStack))
+       newStack = append(newStack, vm.dataStack[:len(vm.dataStack)-4]...)
+       newStack = append(newStack, vm.dataStack[len(vm.dataStack)-2:]...)
+       newStack = append(newStack, vm.dataStack[len(vm.dataStack)-4])
+       newStack = append(newStack, vm.dataStack[len(vm.dataStack)-3])
+       vm.dataStack = newStack
+       return nil
+}
+
+func opIfDup(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       item, err := vm.top()
+       if err != nil {
+               return err
+       }
+       if AsBool(item) {
+               err = vm.push(item, false)
+               if err != nil {
+                       return err
+               }
+       }
+       return nil
+}
+
+func opDepth(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       err = vm.pushInt64(int64(len(vm.dataStack)), false)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func opDrop(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       _, err = vm.pop(false)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func opDup(vm *virtualMachine) error {
+       return nDup(vm, 1)
+}
+
+func opNip(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       top, err := vm.top()
+       if err != nil {
+               return err
+       }
+       // temporarily pop off the top value with no standard memory accounting
+       vm.dataStack = vm.dataStack[:len(vm.dataStack)-1]
+       _, err = vm.pop(false)
+       if err != nil {
+               return err
+       }
+       // now put the top item back
+       vm.dataStack = append(vm.dataStack, top)
+       return nil
+}
+
+func opOver(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       if len(vm.dataStack) < 2 {
+               return ErrDataStackUnderflow
+       }
+       err = vm.push(vm.dataStack[len(vm.dataStack)-2], false)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func opPick(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       n, err := vm.popInt64(false)
+       if err != nil {
+               return err
+       }
+       if n < 0 {
+               return ErrBadValue
+       }
+       off, ok := checked.AddInt64(n, 1)
+       if !ok {
+               return ErrBadValue
+       }
+       if int64(len(vm.dataStack)) < off {
+               return ErrDataStackUnderflow
+       }
+       err = vm.push(vm.dataStack[int64(len(vm.dataStack))-(off)], false)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func opRoll(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       n, err := vm.popInt64(false)
+       if err != nil {
+               return err
+       }
+       if n < 0 {
+               return ErrBadValue
+       }
+       off, ok := checked.AddInt64(n, 1)
+       if !ok {
+               return ErrBadValue
+       }
+       err = rot(vm, off)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func opRot(vm *virtualMachine) error {
+       err := vm.applyCost(2)
+       if err != nil {
+               return err
+       }
+       err = rot(vm, 3)
+       if err != nil {
+               return err
+       }
+       return nil
+}
+
+func rot(vm *virtualMachine, n int64) error {
+       if n < 1 {
+               return ErrBadValue
+       }
+       if int64(len(vm.dataStack)) < n {
+               return ErrDataStackUnderflow
+       }
+       index := int64(len(vm.dataStack)) - n
+       newStack := make([][]byte, 0, len(vm.dataStack))
+       newStack = append(newStack, vm.dataStack[:index]...)
+       newStack = append(newStack, vm.dataStack[index+1:]...)
+       newStack = append(newStack, vm.dataStack[index])
+       vm.dataStack = newStack
+       return nil
+}
+
+func opSwap(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       l := len(vm.dataStack)
+       if l < 2 {
+               return ErrDataStackUnderflow
+       }
+       vm.dataStack[l-1], vm.dataStack[l-2] = vm.dataStack[l-2], vm.dataStack[l-1]
+       return nil
+}
+
+func opTuck(vm *virtualMachine) error {
+       err := vm.applyCost(1)
+       if err != nil {
+               return err
+       }
+       if len(vm.dataStack) < 2 {
+               return ErrDataStackUnderflow
+       }
+       top2 := make([][]byte, 2)
+       copy(top2, vm.dataStack[len(vm.dataStack)-2:])
+       // temporarily remove the top two items without standard memory accounting
+       vm.dataStack = vm.dataStack[:len(vm.dataStack)-2]
+       err = vm.push(top2[1], false)
+       if err != nil {
+               return err
+       }
+       vm.dataStack = append(vm.dataStack, top2...)
+       return nil
+}

diff --git a/vendor/github.com/bytom/protocol/vm/stack_test.go b/vendor/github.com/bytom/protocol/vm/stack_test.go
new file mode 100644 (file)
index 0000000..559c00d
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/stack_test.go
@@ -0,0 +1,423 @@
+package vm
+
+import (
+       "fmt"
+       "reflect"
+       "runtime"
+       "strings"
+       "testing"
+
+       "github.com/bytom/testutil"
+)
+
+func TestStackOps(t *testing.T) {
+       type testStruct struct {
+               op      Op
+               startVM *virtualMachine
+               wantErr error
+               wantVM  *virtualMachine
+       }
+
+       cases := []testStruct{{
+               op: OP_TOALTSTACK,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{},
+                       altStack:  [][]byte{{1}},
+               },
+       }, {
+               op: OP_FROMALTSTACK,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       altStack: [][]byte{{1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       altStack:  [][]byte{},
+                       dataStack: [][]byte{{1}},
+               },
+       }, {
+               op: OP_FROMALTSTACK,
+               startVM: &virtualMachine{
+                       runLimit: 50000,
+                       altStack: [][]byte{},
+               },
+               wantErr: ErrAltStackUnderflow,
+       }, {
+               op: OP_2DROP,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  50016,
+                       dataStack: [][]byte{},
+               },
+       }, {
+               op: OP_2DUP,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49980,
+                       dataStack: [][]byte{{2}, {1}, {2}, {1}},
+               },
+       }, {
+               op: OP_3DUP,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{3}, {2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49970,
+                       dataStack: [][]byte{{3}, {2}, {1}, {3}, {2}, {1}},
+               },
+       }, {
+               op: OP_2OVER,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{4}, {3}, {2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49980,
+                       dataStack: [][]byte{{4}, {3}, {2}, {1}, {4}, {3}},
+               },
+       }, {
+               op: OP_2OVER,
+               startVM: &virtualMachine{
+                       runLimit:  2,
+                       dataStack: [][]byte{{4}, {3}, {2}, {1}},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_2ROT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{6}, {5}, {4}, {3}, {2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{{4}, {3}, {2}, {1}, {6}, {5}},
+               },
+       }, {
+               op: OP_2SWAP,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{4}, {3}, {2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{{2}, {1}, {4}, {3}},
+               },
+       }, {
+               op: OP_IFDUP,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49990,
+                       dataStack: [][]byte{{1}, {1}},
+               },
+       }, {
+               op: OP_IFDUP,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49999,
+                       dataStack: [][]byte{{}},
+               },
+       }, {
+               op: OP_IFDUP,
+               startVM: &virtualMachine{
+                       runLimit:  1,
+                       dataStack: [][]byte{{1}},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_DEPTH,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49990,
+                       dataStack: [][]byte{{1}, {1}},
+               },
+       }, {
+               op: OP_DEPTH,
+               startVM: &virtualMachine{
+                       runLimit:  1,
+                       dataStack: [][]byte{{1}},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_DROP,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  50008,
+                       dataStack: [][]byte{},
+               },
+       }, {
+               op: OP_DUP,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49990,
+                       dataStack: [][]byte{{1}, {1}},
+               },
+       }, {
+               op: OP_DUP,
+               startVM: &virtualMachine{
+                       runLimit:  1,
+                       dataStack: [][]byte{{1}},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_NIP,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  50008,
+                       dataStack: [][]byte{{1}},
+               },
+       }, {
+               op: OP_OVER,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49990,
+                       dataStack: [][]byte{{2}, {1}, {2}},
+               },
+       }, {
+               op: OP_OVER,
+               startVM: &virtualMachine{
+                       runLimit:  1,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_PICK,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{3}, {2}, {1}, {2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{{3}, {2}, {1}, {3}},
+               },
+       }, {
+               op: OP_PICK,
+               startVM: &virtualMachine{
+                       runLimit:  2,
+                       dataStack: [][]byte{{0xff, 0xff}, {2}, {1}, {2}},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               op: OP_ROLL,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{3}, {2}, {1}, {2}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  50007,
+                       dataStack: [][]byte{{2}, {1}, {3}},
+               },
+       }, {
+               op: OP_ROT,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{3}, {2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49998,
+                       dataStack: [][]byte{{2}, {1}, {3}},
+               },
+       }, {
+               op: OP_SWAP,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49999,
+                       dataStack: [][]byte{{1}, {2}},
+               },
+       }, {
+               op: OP_TUCK,
+               startVM: &virtualMachine{
+                       runLimit:  50000,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantVM: &virtualMachine{
+                       runLimit:  49990,
+                       dataStack: [][]byte{{1}, {2}, {1}},
+               },
+       }, {
+               op: OP_TUCK,
+               startVM: &virtualMachine{
+                       runLimit:  1,
+                       dataStack: [][]byte{{2}, {1}},
+               },
+               wantErr: ErrRunLimitExceeded,
+       }}
+       stackops := []Op{
+               OP_DEPTH, OP_FROMALTSTACK, OP_TOALTSTACK, OP_2DROP, OP_2DUP, OP_3DUP,
+               OP_2OVER, OP_2ROT, OP_2SWAP, OP_IFDUP, OP_DROP, OP_DUP, OP_NIP,
+               OP_OVER, OP_PICK, OP_ROLL, OP_ROT, OP_SWAP, OP_TUCK,
+       }
+       for _, op := range stackops {
+               cases = append(cases, testStruct{
+                       op:      op,
+                       startVM: &virtualMachine{runLimit: 0},
+                       wantErr: ErrRunLimitExceeded,
+               })
+       }
+
+       for i, c := range cases {
+               err := ops[c.op].fn(c.startVM)
+
+               if err != c.wantErr {
+                       t.Errorf("case %d, op %s: got err = %v want %v", i, ops[c.op].name, err, c.wantErr)
+                       continue
+               }
+               if c.wantErr != nil {
+                       continue
+               }
+
+               if !testutil.DeepEqual(c.startVM, c.wantVM) {
+                       t.Errorf("case %d, op %s: unexpected vm result\n\tgot:  %+v\n\twant: %+v\n", i, ops[c.op].name, c.startVM, c.wantVM)
+               }
+       }
+}
+
+func TestStackUnderflow(t *testing.T) {
+       cases := []struct {
+               narg int // number of stack items required
+               op   func(*virtualMachine) error
+       }{
+               // bitwise
+               {1, opInvert},
+               {2, opAnd},
+               {2, opOr},
+               {2, opXor},
+               {2, opEqual},
+               {2, opEqualVerify},
+
+               // control
+               {1, opVerify},
+               {3, opCheckPredicate},
+               {1, opJumpIf},
+
+               // crypto
+               {1, opSha256},
+               {1, opSha3},
+               {3, opCheckSig},
+               {3, opCheckMultiSig}, // special, see also TestCryptoOps
+
+               // introspection
+               {5, opCheckOutput},
+
+               // numeric
+               {1, op1Add},
+               {1, op1Sub},
+               {1, op2Mul},
+               {1, op2Div},
+               {1, opNegate},
+               {1, opAbs},
+               {1, opNot},
+               {1, op0NotEqual},
+               {2, opAdd},
+               {2, opSub},
+               {2, opMul},
+               {2, opDiv},
+               {2, opMod},
+               {2, opLshift},
+               {2, opRshift},
+               {2, opBoolAnd},
+               {2, opBoolOr},
+               {2, opNumEqual},
+               {2, opNumEqualVerify},
+               {2, opNumNotEqual},
+               {2, opLessThan},
+               {2, opGreaterThan},
+               {2, opLessThanOrEqual},
+               {2, opGreaterThanOrEqual},
+               {2, opMin},
+               {2, opMax},
+               {3, opWithin},
+
+               // splice
+               {2, opCat},
+               {3, opSubstr},
+               {2, opLeft},
+               {2, opRight},
+               {1, opSize},
+               {2, opCatpushdata},
+
+               // stack
+               {1, opToAltStack},
+               {2, op2Drop},
+               {2, op2Dup},
+               {3, op3Dup},
+               {4, op2Over},
+               {6, op2Rot},
+               {4, op2Swap},
+               {1, opIfDup},
+               {1, opDrop},
+               {1, opDup},
+               {2, opNip},
+               {2, opOver},
+               {2, opPick}, // TODO(kr): special; check data-dependent # of pops
+               {2, opRoll}, // TODO(kr): special; check data-dependent # of pops
+               {3, opRot},
+               {2, opSwap},
+               {2, opTuck},
+       }
+
+       for _, test := range cases {
+               t.Run(funcName(test.op), func(t *testing.T) {
+
+                       for i := 0; i < test.narg; i++ {
+                               t.Run(fmt.Sprintf("%d args", i), func(t *testing.T) {
+
+                                       vm := &virtualMachine{
+                                               runLimit:  50000,
+                                               dataStack: make([][]byte, i),
+                                       }
+                                       err := test.op(vm)
+                                       if err != ErrDataStackUnderflow {
+                                               t.Errorf("err = %v, want ErrStackUnderflow", err)
+                                       }
+
+                               })
+                       }
+
+               })
+       }
+}
+
+func funcName(f interface{}) string {
+       v := reflect.ValueOf(f)
+       if v.Kind() != reflect.Func {
+               return ""
+       }
+       s := runtime.FuncForPC(v.Pointer()).Name()
+       return s[strings.LastIndex(s, ".")+1:]
+}

diff --git a/vendor/github.com/bytom/protocol/vm/types.go b/vendor/github.com/bytom/protocol/vm/types.go
new file mode 100644 (file)
index 0000000..b92381d
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/types.go
@@ -0,0 +1,52 @@
+package vm
+
+import "encoding/binary"
+
+var trueBytes = []byte{1}
+
+func BoolBytes(b bool) (result []byte) {
+       if b {
+               return trueBytes
+       }
+       return []byte{}
+}
+
+func AsBool(bytes []byte) bool {
+       for _, b := range bytes {
+               if b != 0 {
+                       return true
+               }
+       }
+       return false
+}
+
+func Int64Bytes(n int64) []byte {
+       if n == 0 {
+               return []byte{}
+       }
+       res := make([]byte, 8)
+       // converting int64 to uint64 is a safe operation that
+       // preserves all data
+       binary.LittleEndian.PutUint64(res, uint64(n))
+       for len(res) > 0 && res[len(res)-1] == 0 {
+               res = res[:len(res)-1]
+       }
+       return res
+}
+
+func AsInt64(b []byte) (int64, error) {
+       if len(b) == 0 {
+               return 0, nil
+       }
+       if len(b) > 8 {
+               return 0, ErrBadValue
+       }
+
+       var padded [8]byte
+       copy(padded[:], b)
+
+       res := binary.LittleEndian.Uint64(padded[:])
+       // converting uint64 to int64 is a safe operation that
+       // preserves all data
+       return int64(res), nil
+}

diff --git a/vendor/github.com/bytom/protocol/vm/types_test.go b/vendor/github.com/bytom/protocol/vm/types_test.go
new file mode 100644 (file)
index 0000000..70031bc
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/types_test.go
@@ -0,0 +1,80 @@
+package vm
+
+import (
+       "bytes"
+       "testing"
+)
+
+func TestBoolBytes(t *testing.T) {
+       got := BoolBytes(true)
+       want := []byte{1}
+       if !bytes.Equal(got, want) {
+               t.Errorf("BoolBytes(t) = %x want %x", got, want)
+       }
+
+       got = BoolBytes(false)
+       want = []byte{}
+       if !bytes.Equal(got, want) {
+               t.Errorf("BoolBytes(f) = %x want %x", got, want)
+       }
+}
+
+func TestAsBool(t *testing.T) {
+       cases := []struct {
+               data []byte
+               want bool
+       }{
+               {[]byte{0, 0, 0, 0}, false},
+               {[]byte{0}, false},
+               {[]byte{}, false},
+               {[]byte{1}, true},
+               {[]byte{1, 1, 1, 1}, true},
+               {[]byte{0, 0, 0, 1}, true},
+               {[]byte{1, 0, 0, 0}, true},
+               {[]byte{2}, true},
+       }
+
+       for _, c := range cases {
+               got := AsBool(c.data)
+
+               if got != c.want {
+                       t.Errorf("AsBool(%x) = %v want %v", c.data, got, c.want)
+               }
+       }
+}
+
+func TestInt64(t *testing.T) {
+       cases := []struct {
+               num  int64
+               data []byte
+       }{
+               {0, []byte{}},
+               {1, []byte{0x01}},
+               {255, []byte{0xff}},
+               {256, []byte{0x00, 0x01}},
+               {1 << 16, []byte{0x00, 0x00, 0x01}},
+               {-1, []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}},
+               {-2, []byte{0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}},
+       }
+
+       for _, c := range cases {
+               gotData := Int64Bytes(c.num)
+
+               if !bytes.Equal(gotData, c.data) {
+                       t.Errorf("Int64Bytes(%d) = %x want %x", c.num, gotData, c.data)
+               }
+
+               gotNum, _ := AsInt64(c.data)
+
+               if gotNum != c.num {
+                       t.Errorf("AsInt64(%x) = %d want %d", c.data, gotNum, c.num)
+               }
+       }
+
+       data := []byte{1, 1, 1, 1, 1, 1, 1, 1, 1}
+       _, err := AsInt64(data)
+       want := ErrBadValue
+       if err != want {
+               t.Errorf("AsInt64(%x) = %v want %v", data, err, want)
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/vm/vm.go b/vendor/github.com/bytom/protocol/vm/vm.go
new file mode 100644 (file)
index 0000000..c9f8e13
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/vm.go
@@ -0,0 +1,232 @@
+package vm
+
+import (
+       "encoding/hex"
+       "fmt"
+       "io"
+       "strings"
+
+       "github.com/bytom/errors"
+)
+
+type virtualMachine struct {
+       context *Context
+
+       program      []byte // the program currently executing
+       pc, nextPC   uint32
+       runLimit     int64
+       deferredCost int64
+
+       expansionReserved bool
+
+       // Stores the data parsed out of an opcode. Used as input to
+       // data-pushing opcodes.
+       data []byte
+
+       // CHECKPREDICATE spawns a child vm with depth+1
+       depth int
+
+       // In each of these stacks, stack[len(stack)-1] is the top element.
+       dataStack [][]byte
+       altStack  [][]byte
+}
+
+// TraceOut - if non-nil - will receive trace output during
+// execution.
+var TraceOut io.Writer
+
+// Verify program by running VM
+func Verify(context *Context, gasLimit int64) (gasLeft int64, err error) {
+       defer func() {
+               if r := recover(); r != nil {
+                       if rErr, ok := r.(error); ok {
+                               err = errors.Sub(ErrUnexpected, rErr)
+                       } else {
+                               err = errors.Wrap(ErrUnexpected, r)
+                       }
+               }
+       }()
+
+       if context.VMVersion != 1 {
+               return gasLimit, ErrUnsupportedVM
+       }
+
+       vm := &virtualMachine{
+               expansionReserved: context.TxVersion != nil && *context.TxVersion == 1,
+               program:           context.Code,
+               runLimit:          gasLimit,
+               context:           context,
+       }
+
+       args := context.Arguments
+       for i, arg := range args {
+               err = vm.push(arg, false)
+               if err != nil {
+                       return vm.runLimit, errors.Wrapf(err, "pushing initial argument %d", i)
+               }
+       }
+
+       err = vm.run()
+       if err == nil && vm.falseResult() {
+               err = ErrFalseVMResult
+       }
+
+       return vm.runLimit, wrapErr(err, vm, args)
+}
+
+// falseResult returns true iff the stack is empty or the top
+// item is false
+func (vm *virtualMachine) falseResult() bool {
+       return len(vm.dataStack) == 0 || !AsBool(vm.dataStack[len(vm.dataStack)-1])
+}
+
+func (vm *virtualMachine) run() error {
+       for vm.pc = 0; vm.pc < uint32(len(vm.program)); { // handle vm.pc updates in step
+               err := vm.step()
+               if err != nil {
+                       return err
+               }
+       }
+       return nil
+}
+
+func (vm *virtualMachine) step() error {
+       inst, err := ParseOp(vm.program, vm.pc)
+       if err != nil {
+               return err
+       }
+
+       vm.nextPC = vm.pc + inst.Len
+
+       if TraceOut != nil {
+               opname := inst.Op.String()
+               fmt.Fprintf(TraceOut, "vm %d pc %d limit %d %s", vm.depth, vm.pc, vm.runLimit, opname)
+               if len(inst.Data) > 0 {
+                       fmt.Fprintf(TraceOut, " %x", inst.Data)
+               }
+               fmt.Fprint(TraceOut, "\n")
+       }
+
+       if isExpansion[inst.Op] {
+               if vm.expansionReserved {
+                       return ErrDisallowedOpcode
+               }
+               vm.pc = vm.nextPC
+               return vm.applyCost(1)
+       }
+
+       vm.deferredCost = 0
+       vm.data = inst.Data
+       err = ops[inst.Op].fn(vm)
+       if err != nil {
+               return err
+       }
+       err = vm.applyCost(vm.deferredCost)
+       if err != nil {
+               return err
+       }
+       vm.pc = vm.nextPC
+
+       if TraceOut != nil {
+               for i := len(vm.dataStack) - 1; i >= 0; i-- {
+                       fmt.Fprintf(TraceOut, "  stack %d: %x\n", len(vm.dataStack)-1-i, vm.dataStack[i])
+               }
+       }
+
+       return nil
+}
+
+func (vm *virtualMachine) push(data []byte, deferred bool) error {
+       cost := 8 + int64(len(data))
+       if deferred {
+               vm.deferCost(cost)
+       } else {
+               err := vm.applyCost(cost)
+               if err != nil {
+                       return err
+               }
+       }
+       vm.dataStack = append(vm.dataStack, data)
+       return nil
+}
+
+func (vm *virtualMachine) pushBool(b bool, deferred bool) error {
+       return vm.push(BoolBytes(b), deferred)
+}
+
+func (vm *virtualMachine) pushInt64(n int64, deferred bool) error {
+       return vm.push(Int64Bytes(n), deferred)
+}
+
+func (vm *virtualMachine) pop(deferred bool) ([]byte, error) {
+       if len(vm.dataStack) == 0 {
+               return nil, ErrDataStackUnderflow
+       }
+       res := vm.dataStack[len(vm.dataStack)-1]
+       vm.dataStack = vm.dataStack[:len(vm.dataStack)-1]
+
+       cost := 8 + int64(len(res))
+       if deferred {
+               vm.deferCost(-cost)
+       } else {
+               vm.runLimit += cost
+       }
+
+       return res, nil
+}
+
+func (vm *virtualMachine) popInt64(deferred bool) (int64, error) {
+       bytes, err := vm.pop(deferred)
+       if err != nil {
+               return 0, err
+       }
+       n, err := AsInt64(bytes)
+       return n, err
+}
+
+func (vm *virtualMachine) top() ([]byte, error) {
+       if len(vm.dataStack) == 0 {
+               return nil, ErrDataStackUnderflow
+       }
+       return vm.dataStack[len(vm.dataStack)-1], nil
+}
+
+// positive cost decreases runlimit, negative cost increases it
+func (vm *virtualMachine) applyCost(n int64) error {
+       if n > vm.runLimit {
+               vm.runLimit = 0
+               return ErrRunLimitExceeded
+       }
+       vm.runLimit -= n
+       return nil
+}
+
+func (vm *virtualMachine) deferCost(n int64) {
+       vm.deferredCost += n
+}
+
+func stackCost(stack [][]byte) int64 {
+       result := int64(8 * len(stack))
+       for _, item := range stack {
+               result += int64(len(item))
+       }
+       return result
+}
+
+func wrapErr(err error, vm *virtualMachine, args [][]byte) error {
+       if err == nil {
+               return nil
+       }
+
+       dis, errDis := Disassemble(vm.program)
+       if errDis != nil {
+               dis = "???"
+       }
+
+       dataArgs := make([]string, 0, len(args))
+       for _, a := range args {
+               dataArgs = append(dataArgs, hex.EncodeToString(a))
+       }
+
+       return errors.Wrap(err, fmt.Sprintf("%s [prog %x = %s; args %s]", err.Error(), vm.program, dis, strings.Join(dataArgs, " ")))
+}

diff --git a/vendor/github.com/bytom/protocol/vm/vm_test.go b/vendor/github.com/bytom/protocol/vm/vm_test.go
new file mode 100644 (file)
index 0000000..942a236
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/vm_test.go
@@ -0,0 +1,442 @@
+package vm
+
+import (
+       "bytes"
+       "fmt"
+       "os"
+       "strings"
+       "testing"
+       "testing/quick"
+
+       "github.com/bytom/errors"
+       "github.com/bytom/testutil"
+)
+
+type tracebuf struct {
+       bytes.Buffer
+}
+
+func (t tracebuf) dump() {
+       os.Stdout.Write(t.Bytes())
+}
+
+// Programs that run without error.
+func TestProgramOK(t *testing.T) {
+       doOKNotOK(t, true)
+}
+
+// Programs that return an ErrFalseVMResult.
+func TestProgramNotOK(t *testing.T) {
+       doOKNotOK(t, false)
+}
+
+func doOKNotOK(t *testing.T, expectOK bool) {
+       cases := []struct {
+               prog string
+               args [][]byte
+       }{
+               {"TRUE", nil},
+
+               // bitwise ops
+               {"INVERT 0xfef0 EQUAL", [][]byte{{0x01, 0x0f}}},
+
+               {"AND 0x02 EQUAL", [][]byte{{0x03}, {0x06}}},
+               {"AND 0x02 EQUAL", [][]byte{{0x03, 0xff}, {0x06}}},
+
+               {"OR 0x07 EQUAL", [][]byte{{0x03}, {0x06}}},
+               {"OR 0x07ff EQUAL", [][]byte{{0x03, 0xff}, {0x06}}},
+
+               {"XOR 0x05 EQUAL", [][]byte{{0x03}, {0x06}}},
+               {"XOR 0x05ff EQUAL", [][]byte{{0x03, 0xff}, {0x06}}},
+
+               // numeric and logical ops
+               {"1ADD 2 NUMEQUAL", [][]byte{Int64Bytes(1)}},
+               {"1ADD 0 NUMEQUAL", [][]byte{Int64Bytes(-1)}},
+
+               {"1SUB 1 NUMEQUAL", [][]byte{Int64Bytes(2)}},
+               {"1SUB -1 NUMEQUAL", [][]byte{Int64Bytes(0)}},
+
+               {"2MUL 2 NUMEQUAL", [][]byte{Int64Bytes(1)}},
+               {"2MUL 0 NUMEQUAL", [][]byte{Int64Bytes(0)}},
+               {"2MUL -2 NUMEQUAL", [][]byte{Int64Bytes(-1)}},
+
+               {"2DIV 1 NUMEQUAL", [][]byte{Int64Bytes(2)}},
+               {"2DIV 0 NUMEQUAL", [][]byte{Int64Bytes(1)}},
+               {"2DIV 0 NUMEQUAL", [][]byte{Int64Bytes(0)}},
+               {"2DIV -1 NUMEQUAL", [][]byte{Int64Bytes(-1)}},
+               {"2DIV -1 NUMEQUAL", [][]byte{Int64Bytes(-2)}},
+
+               {"NEGATE -1 NUMEQUAL", [][]byte{Int64Bytes(1)}},
+               {"NEGATE 1 NUMEQUAL", [][]byte{Int64Bytes(-1)}},
+               {"NEGATE 0 NUMEQUAL", [][]byte{Int64Bytes(0)}},
+
+               {"ABS 1 NUMEQUAL", [][]byte{Int64Bytes(1)}},
+               {"ABS 1 NUMEQUAL", [][]byte{Int64Bytes(-1)}},
+               {"ABS 0 NUMEQUAL", [][]byte{Int64Bytes(0)}},
+
+               {"0NOTEQUAL", [][]byte{Int64Bytes(1)}},
+               {"0NOTEQUAL NOT", [][]byte{Int64Bytes(0)}},
+
+               {"ADD 5 NUMEQUAL", [][]byte{Int64Bytes(2), Int64Bytes(3)}},
+
+               {"SUB 2 NUMEQUAL", [][]byte{Int64Bytes(5), Int64Bytes(3)}},
+
+               {"MUL 6 NUMEQUAL", [][]byte{Int64Bytes(2), Int64Bytes(3)}},
+
+               {"DIV 2 NUMEQUAL", [][]byte{Int64Bytes(6), Int64Bytes(3)}},
+
+               {"MOD 0 NUMEQUAL", [][]byte{Int64Bytes(6), Int64Bytes(2)}},
+               {"MOD 0 NUMEQUAL", [][]byte{Int64Bytes(-6), Int64Bytes(2)}},
+               {"MOD 0 NUMEQUAL", [][]byte{Int64Bytes(6), Int64Bytes(-2)}},
+               {"MOD 0 NUMEQUAL", [][]byte{Int64Bytes(-6), Int64Bytes(-2)}},
+               {"MOD 2 NUMEQUAL", [][]byte{Int64Bytes(12), Int64Bytes(10)}},
+               {"MOD 8 NUMEQUAL", [][]byte{Int64Bytes(-12), Int64Bytes(10)}},
+               {"MOD -8 NUMEQUAL", [][]byte{Int64Bytes(12), Int64Bytes(-10)}},
+               {"MOD -2 NUMEQUAL", [][]byte{Int64Bytes(-12), Int64Bytes(-10)}},
+
+               {"LSHIFT 2 NUMEQUAL", [][]byte{Int64Bytes(1), Int64Bytes(1)}},
+               {"LSHIFT 4 NUMEQUAL", [][]byte{Int64Bytes(1), Int64Bytes(2)}},
+               {"LSHIFT -2 NUMEQUAL", [][]byte{Int64Bytes(-1), Int64Bytes(1)}},
+               {"LSHIFT -4 NUMEQUAL", [][]byte{Int64Bytes(-1), Int64Bytes(2)}},
+
+               {"1 1 BOOLAND", nil},
+               {"1 0 BOOLAND NOT", nil},
+               {"0 1 BOOLAND NOT", nil},
+               {"0 0 BOOLAND NOT", nil},
+
+               {"1 1 BOOLOR", nil},
+               {"1 0 BOOLOR", nil},
+               {"0 1 BOOLOR", nil},
+               {"0 0 BOOLOR NOT", nil},
+
+               {"1 2 OR 3 EQUAL", nil},
+
+               // splice ops
+               {"0 CATPUSHDATA 0x0000 EQUAL", [][]byte{{0x00}}},
+               {"0 0xff CATPUSHDATA 0x01ff EQUAL", nil},
+               {"CATPUSHDATA 0x050105 EQUAL", [][]byte{{0x05}, {0x05}}},
+               {"CATPUSHDATA 0xff01ff EQUAL", [][]byte{{0xff}, {0xff}}},
+               {"0 0xcccccc CATPUSHDATA 0x03cccccc EQUAL", nil},
+               {"0x05 0x05 SWAP 0xdeadbeef CATPUSHDATA DROP 0x05 EQUAL", nil},
+               {"0x05 0x05 SWAP 0xdeadbeef CATPUSHDATA DROP 0x05 EQUAL", nil},
+
+               // // control flow ops
+               {"1 JUMP:7 0 1 EQUAL", nil},                                                       // jumps over 0
+               {"1 JUMP:$target 0 $target 1 EQUAL", nil},                                         // jumps over 0
+               {"1 1 JUMPIF:8 0 1 EQUAL", nil},                                                   // jumps over 0
+               {"1 1 JUMPIF:$target 0 $target 1 EQUAL", nil},                                     // jumps over 0
+               {"1 0 JUMPIF:8 0 1 EQUAL NOT", nil},                                               // doesn't jump over 0
+               {"1 0 JUMPIF:$target 0 $target 1 EQUAL NOT", nil},                                 // doesn't jump over 0
+               {"1 0 JUMPIF:1", nil},                                                             // doesn't jump, so no infinite loop
+               {"1 $target 0 JUMPIF:$target", nil},                                               // doesn't jump, so no infinite loop
+               {"4 1 JUMPIF:14 5 EQUAL JUMP:16 4 EQUAL", nil},                                    // if (true) { return x == 4; } else { return x == 5; }
+               {"4 1 JUMPIF:$true 5 EQUAL JUMP:$end $true 4 EQUAL $end", nil},                    // if (true) { return x == 4; } else { return x == 5; }
+               {"5 0 JUMPIF:14 5 EQUAL JUMP:16 4 EQUAL", nil},                                    // if (false) { return x == 4; } else { return x == 5; }
+               {"5 0 JUMPIF:$true 5 EQUAL JUMP:$end $true 4 $test EQUAL $end", nil},              // if (false) { return x == 4; } else { return x == 5; }
+               {"0 1 2 3 4 5 6 JUMP:13 DROP DUP 0 NUMNOTEQUAL JUMPIF:12 1", nil},                 // same as "0 1 2 3 4 5 6 WHILE DROP ENDWHILE 1"
+               {"0 1 2 3 4 5 6 JUMP:$dup $drop DROP $dup DUP 0 NUMNOTEQUAL JUMPIF:$drop 1", nil}, // same as "0 1 2 3 4 5 6 WHILE DROP ENDWHILE 1"
+               {"0 JUMP:7 1ADD DUP 10 LESSTHAN JUMPIF:6 10 NUMEQUAL", nil},                       // fixed version of "0 1 WHILE DROP 1ADD DUP 10 LESSTHAN ENDWHILE 10 NUMEQUAL"
+               {"0 JUMP:$dup $add 1ADD $dup DUP 10 LESSTHAN JUMPIF:$add 10 NUMEQUAL", nil},       // fixed version of "0 1 WHILE DROP 1ADD DUP 10 LESSTHAN ENDWHILE 10 NUMEQUAL"
+
+       }
+       for i, c := range cases {
+               progSrc := c.prog
+               if !expectOK {
+                       progSrc += " NOT"
+               }
+               prog, err := Assemble(progSrc)
+               if err != nil {
+                       t.Fatal(err)
+               }
+               fmt.Printf("* case %d, prog [%s] [%x]\n", i, progSrc, prog)
+               trace := new(tracebuf)
+               TraceOut = trace
+               vm := &virtualMachine{
+                       program:   prog,
+                       runLimit:  int64(10000),
+                       dataStack: append([][]byte{}, c.args...),
+               }
+               err = vm.run()
+               if err == nil && vm.falseResult() {
+                       err = ErrFalseVMResult
+               }
+               if expectOK && err != nil {
+                       trace.dump()
+                       t.Errorf("case %d [%s]: expected success, got error %s", i, progSrc, err)
+               } else if !expectOK && err != ErrFalseVMResult {
+                       trace.dump()
+                       t.Errorf("case %d [%s]: expected ErrFalseVMResult, got %s", i, progSrc, err)
+               }
+       }
+}
+
+func TestVerifyTxInput(t *testing.T) {
+       cases := []struct {
+               vctx    *Context
+               wantErr error
+               gasLeft int64
+       }{
+               {
+                       vctx: &Context{
+                               VMVersion: 1,
+                               Code:      []byte{byte(OP_ADD), byte(OP_5), byte(OP_NUMEQUAL)},
+                               Arguments: [][]byte{{2}, {3}},
+                       },
+                       gasLeft: 9986,
+               },
+               {
+                       vctx:    &Context{VMVersion: 2},
+                       wantErr: ErrUnsupportedVM,
+                       gasLeft: 10000,
+               },
+               {
+                       vctx: &Context{
+                               VMVersion: 1,
+                               Code:      []byte{byte(OP_ADD), byte(OP_5), byte(OP_NUMEQUAL)},
+                               Arguments: [][]byte{make([]byte, 50001)},
+                       },
+                       wantErr: ErrRunLimitExceeded,
+                       gasLeft: 0,
+               },
+       }
+
+       for _, c := range cases {
+               gasLeft, gotErr := Verify(c.vctx, 10000)
+               if errors.Root(gotErr) != c.wantErr {
+                       t.Errorf("VerifyTxInput(%+v) err = %v want %v", c.vctx, gotErr, c.wantErr)
+               }
+               if gasLeft != c.gasLeft {
+                       t.Errorf("VerifyTxInput(%+v) err = gasLeft doesn't match", c.vctx)
+               }
+       }
+}
+
+func TestRun(t *testing.T) {
+       cases := []struct {
+               vm      *virtualMachine
+               wantErr error
+       }{{
+               vm: &virtualMachine{runLimit: 50000, program: []byte{byte(OP_TRUE)}},
+       }, {
+               vm:      &virtualMachine{runLimit: 50000, program: []byte{byte(OP_ADD)}},
+               wantErr: ErrDataStackUnderflow,
+       }}
+
+       for i, c := range cases {
+               gotErr := c.vm.run()
+
+               if gotErr != c.wantErr {
+                       t.Errorf("run test %d: got err = %v want %v", i, gotErr, c.wantErr)
+                       continue
+               }
+
+               if c.wantErr != nil {
+                       continue
+               }
+       }
+}
+
+func TestStep(t *testing.T) {
+       txVMContext := &Context{DestPos: new(uint64)}
+       cases := []struct {
+               startVM *virtualMachine
+               wantVM  *virtualMachine
+               wantErr error
+       }{{
+               startVM: &virtualMachine{
+                       program:  []byte{byte(OP_TRUE)},
+                       runLimit: 50000,
+               },
+               wantVM: &virtualMachine{
+                       program:   []byte{byte(OP_TRUE)},
+                       runLimit:  49990,
+                       dataStack: [][]byte{{1}},
+                       pc:        1,
+                       nextPC:    1,
+                       data:      []byte{1},
+               },
+       }, {
+               startVM: &virtualMachine{
+                       program:   []byte{byte(OP_TRUE), byte(OP_JUMP), byte(0xff), byte(0x00), byte(0x00), byte(0x00)},
+                       runLimit:  49990,
+                       dataStack: [][]byte{},
+                       pc:        1,
+               },
+               wantVM: &virtualMachine{
+                       program:      []byte{byte(OP_TRUE), byte(OP_JUMP), byte(0xff), byte(0x00), byte(0x00), byte(0x00)},
+                       runLimit:     49989,
+                       dataStack:    [][]byte{},
+                       data:         []byte{byte(0xff), byte(0x00), byte(0x00), byte(0x00)},
+                       pc:           255,
+                       nextPC:       255,
+                       deferredCost: 0,
+               },
+       }, {
+               startVM: &virtualMachine{
+                       program:   []byte{byte(OP_TRUE), byte(OP_JUMPIF), byte(0x00), byte(0x00), byte(0x00), byte(0x00)},
+                       runLimit:  49995,
+                       dataStack: [][]byte{{1}},
+                       pc:        1,
+               },
+               wantVM: &virtualMachine{
+                       program:      []byte{byte(OP_TRUE), byte(OP_JUMPIF), byte(0x00), byte(0x00), byte(0x00), byte(0x00)},
+                       runLimit:     50003,
+                       dataStack:    [][]byte{},
+                       pc:           0,
+                       nextPC:       0,
+                       data:         []byte{byte(0x00), byte(0x00), byte(0x00), byte(0x00)},
+                       deferredCost: -9,
+               },
+       }, {
+               startVM: &virtualMachine{
+                       program:   []byte{byte(OP_FALSE), byte(OP_JUMPIF), byte(0x00), byte(0x00), byte(0x00), byte(0x00)},
+                       runLimit:  49995,
+                       dataStack: [][]byte{{}},
+                       pc:        1,
+               },
+               wantVM: &virtualMachine{
+                       program:      []byte{byte(OP_FALSE), byte(OP_JUMPIF), byte(0x00), byte(0x00), byte(0x00), byte(0x00)},
+                       runLimit:     50002,
+                       dataStack:    [][]byte{},
+                       pc:           6,
+                       nextPC:       6,
+                       data:         []byte{byte(0x00), byte(0x00), byte(0x00), byte(0x00)},
+                       deferredCost: -8,
+               },
+       }, {
+               startVM: &virtualMachine{
+                       program:   []byte{255},
+                       runLimit:  50000,
+                       dataStack: [][]byte{},
+               },
+               wantVM: &virtualMachine{
+                       program:   []byte{255},
+                       runLimit:  49999,
+                       pc:        1,
+                       nextPC:    1,
+                       dataStack: [][]byte{},
+               },
+       }, {
+               startVM: &virtualMachine{
+                       program:  []byte{byte(OP_ADD)},
+                       runLimit: 50000,
+               },
+               wantErr: ErrDataStackUnderflow,
+       }, {
+               startVM: &virtualMachine{
+                       program:  []byte{byte(OP_INDEX)},
+                       runLimit: 1,
+                       context:  txVMContext,
+               },
+               wantErr: ErrRunLimitExceeded,
+       }, {
+               startVM: &virtualMachine{
+                       program:           []byte{255},
+                       runLimit:          100,
+                       expansionReserved: true,
+               },
+               wantErr: ErrDisallowedOpcode,
+       }, {
+               startVM: &virtualMachine{
+                       program:  []byte{255},
+                       runLimit: 100,
+               },
+               wantVM: &virtualMachine{
+                       program:  []byte{255},
+                       runLimit: 99,
+                       pc:       1,
+                       nextPC:   1,
+               },
+       }}
+
+       for i, c := range cases {
+               gotErr := c.startVM.step()
+               gotVM := c.startVM
+
+               if gotErr != c.wantErr {
+                       t.Errorf("step test %d: got err = %v want %v", i, gotErr, c.wantErr)
+                       continue
+               }
+
+               if c.wantErr != nil {
+                       continue
+               }
+
+               if !testutil.DeepEqual(gotVM, c.wantVM) {
+                       t.Errorf("step test %d:\n\tgot vm:  %+v\n\twant vm: %+v", i, gotVM, c.wantVM)
+               }
+       }
+}
+
+func decompile(prog []byte) string {
+       var strs []string
+       for i := uint32(0); i < uint32(len(prog)); { // update i inside the loop
+               inst, err := ParseOp(prog, i)
+               if err != nil {
+                       strs = append(strs, fmt.Sprintf("<%x>", prog[i]))
+                       i++
+                       continue
+               }
+               var str string
+               if len(inst.Data) > 0 {
+                       str = fmt.Sprintf("0x%x", inst.Data)
+               } else {
+                       str = inst.Op.String()
+               }
+               strs = append(strs, str)
+               i += inst.Len
+       }
+       return strings.Join(strs, " ")
+}
+
+func TestVerifyTxInputQuickCheck(t *testing.T) {
+       f := func(program []byte, witnesses [][]byte) (ok bool) {
+               defer func() {
+                       if err := recover(); err != nil {
+                               t.Log(decompile(program))
+                               for i := range witnesses {
+                                       t.Logf("witness %d: %x\n", i, witnesses[i])
+                               }
+                               t.Log(err)
+                               ok = false
+                       }
+               }()
+
+               vctx := &Context{
+                       VMVersion: 1,
+                       Code:      program,
+                       Arguments: witnesses,
+               }
+               Verify(vctx, 10000)
+
+               return true
+       }
+       if err := quick.Check(f, nil); err != nil {
+               t.Error(err)
+       }
+}
+
+func TestVerifyBlockHeaderQuickCheck(t *testing.T) {
+       f := func(program []byte, witnesses [][]byte) (ok bool) {
+               defer func() {
+                       if err := recover(); err != nil {
+                               t.Log(decompile(program))
+                               for i := range witnesses {
+                                       t.Logf("witness %d: %x\n", i, witnesses[i])
+                               }
+                               t.Log(err)
+                               ok = false
+                       }
+               }()
+               context := &Context{
+                       VMVersion: 1,
+                       Code:      program,
+                       Arguments: witnesses,
+               }
+               Verify(context, 10000)
+               return true
+       }
+       if err := quick.Check(f, nil); err != nil {
+               t.Error(err)
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/vm/vmutil/builder.go b/vendor/github.com/bytom/protocol/vm/vmutil/builder.go
new file mode 100644 (file)
index 0000000..8f57cd1
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/vmutil/builder.go
@@ -0,0 +1,114 @@
+package vmutil
+
+import (
+       "encoding/binary"
+
+       "github.com/bytom/errors"
+       "github.com/bytom/protocol/vm"
+)
+
+type Builder struct {
+       program     []byte
+       jumpCounter int
+
+       // Maps a jump target number to its absolute address.
+       jumpAddr map[int]uint32
+
+       // Maps a jump target number to the list of places where its
+       // absolute address must be filled in once known.
+       jumpPlaceholders map[int][]int
+}
+
+func NewBuilder() *Builder {
+       return &Builder{
+               jumpAddr:         make(map[int]uint32),
+               jumpPlaceholders: make(map[int][]int),
+       }
+}
+
+// AddInt64 adds a pushdata instruction for an integer value.
+func (b *Builder) AddInt64(n int64) *Builder {
+       b.program = append(b.program, vm.PushdataInt64(n)...)
+       return b
+}
+
+// AddData adds a pushdata instruction for a given byte string.
+func (b *Builder) AddData(data []byte) *Builder {
+       b.program = append(b.program, vm.PushdataBytes(data)...)
+       return b
+}
+
+// AddRawBytes simply appends the given bytes to the program. (It does
+// not introduce a pushdata opcode.)
+func (b *Builder) AddRawBytes(data []byte) *Builder {
+       b.program = append(b.program, data...)
+       return b
+}
+
+// AddOp adds the given opcode to the program.
+func (b *Builder) AddOp(op vm.Op) *Builder {
+       b.program = append(b.program, byte(op))
+       return b
+}
+
+// NewJumpTarget allocates a number that can be used as a jump target
+// in AddJump and AddJumpIf. Call SetJumpTarget to associate the
+// number with a program location.
+func (b *Builder) NewJumpTarget() int {
+       b.jumpCounter++
+       return b.jumpCounter
+}
+
+// AddJump adds a JUMP opcode whose target is the given target
+// number. The actual program location of the target does not need to
+// be known yet, as long as SetJumpTarget is called before Build.
+func (b *Builder) AddJump(target int) *Builder {
+       return b.addJump(vm.OP_JUMP, target)
+}
+
+// AddJump adds a JUMPIF opcode whose target is the given target
+// number. The actual program location of the target does not need to
+// be known yet, as long as SetJumpTarget is called before Build.
+func (b *Builder) AddJumpIf(target int) *Builder {
+       return b.addJump(vm.OP_JUMPIF, target)
+}
+
+func (b *Builder) addJump(op vm.Op, target int) *Builder {
+       b.AddOp(op)
+       b.jumpPlaceholders[target] = append(b.jumpPlaceholders[target], len(b.program))
+       b.AddRawBytes([]byte{0, 0, 0, 0})
+       return b
+}
+
+// SetJumpTarget associates the given jump-target number with the
+// current position in the program - namely, the program's length,
+// such that the first instruction executed by a jump using this
+// target will be whatever instruction is added next. It is legal for
+// SetJumpTarget to be called at the end of the program, causing jumps
+// using that target to fall off the end. There must be a call to
+// SetJumpTarget for every jump target used before any call to Build.
+func (b *Builder) SetJumpTarget(target int) *Builder {
+       b.jumpAddr[target] = uint32(len(b.program))
+       return b
+}
+
+var ErrUnresolvedJump = errors.New("unresolved jump target")
+
+// Build produces the bytecode of the program. It first resolves any
+// jumps in the program by filling in the addresses of their
+// targets. This requires SetJumpTarget to be called prior to Build
+// for each jump target used (in a call to AddJump or AddJumpIf). If
+// any target's address hasn't been set in this way, this function
+// produces ErrUnresolvedJump. There are no other error conditions.
+func (b *Builder) Build() ([]byte, error) {
+       for target, placeholders := range b.jumpPlaceholders {
+               addr, ok := b.jumpAddr[target]
+               if !ok {
+                       return nil, errors.Wrapf(ErrUnresolvedJump, "target %d", target)
+               }
+               for _, placeholder := range placeholders {
+                       binary.LittleEndian.PutUint32(b.program[placeholder:placeholder+4], addr)
+               }
+       }
+       return b.program, nil
+}

diff --git a/vendor/github.com/bytom/protocol/vm/vmutil/builder_test.go b/vendor/github.com/bytom/protocol/vm/vmutil/builder_test.go
new file mode 100644 (file)
index 0000000..3df7f8d
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/vmutil/builder_test.go
@@ -0,0 +1,122 @@
+package vmutil
+
+import (
+       "bytes"
+       "encoding/hex"
+       "testing"
+
+       "github.com/bytom/protocol/vm"
+)
+
+func TestAddJump(t *testing.T) {
+       cases := []struct {
+               name    string
+               wantHex string
+               fn      func(t *testing.T, b *Builder)
+       }{
+               {
+                       "single jump single target not yet defined",
+                       "630600000061",
+                       func(t *testing.T, b *Builder) {
+                               target := b.NewJumpTarget()
+                               b.AddJump(target)
+                               b.AddOp(vm.OP_NOP)
+                               b.SetJumpTarget(target)
+                       },
+               },
+               {
+                       "single jump single target already defined",
+                       "616300000000",
+                       func(t *testing.T, b *Builder) {
+                               target := b.NewJumpTarget()
+                               b.SetJumpTarget(target)
+                               b.AddOp(vm.OP_NOP)
+                               b.AddJump(target)
+                       },
+               },
+               {
+                       "two jumps single target not yet defined",
+                       "630c00000061630c00000061",
+                       func(t *testing.T, b *Builder) {
+                               target := b.NewJumpTarget()
+                               b.AddJump(target)
+                               b.AddOp(vm.OP_NOP)
+                               b.AddJump(target)
+                               b.AddOp(vm.OP_NOP)
+                               b.SetJumpTarget(target)
+                       },
+               },
+               {
+                       "two jumps single target already defined",
+                       "616300000000616300000000",
+                       func(t *testing.T, b *Builder) {
+                               target := b.NewJumpTarget()
+                               b.SetJumpTarget(target)
+                               b.AddOp(vm.OP_NOP)
+                               b.AddJump(target)
+                               b.AddOp(vm.OP_NOP)
+                               b.AddJump(target)
+                       },
+               },
+               {
+                       "two jumps single target, one not yet defined, one already defined",
+                       "630600000061616306000000",
+                       func(t *testing.T, b *Builder) {
+                               target := b.NewJumpTarget()
+                               b.AddJump(target)
+                               b.AddOp(vm.OP_NOP)
+                               b.SetJumpTarget(target)
+                               b.AddOp(vm.OP_NOP)
+                               b.AddJump(target)
+                       },
+               },
+               {
+                       "two jumps, two targets, not yet defined",
+                       "630c00000061630d0000006161",
+                       func(t *testing.T, b *Builder) {
+                               target1 := b.NewJumpTarget()
+                               b.AddJump(target1)
+                               b.AddOp(vm.OP_NOP)
+                               target2 := b.NewJumpTarget()
+                               b.AddJump(target2)
+                               b.AddOp(vm.OP_NOP)
+                               b.SetJumpTarget(target1)
+                               b.AddOp(vm.OP_NOP)
+                               b.SetJumpTarget(target2)
+                       },
+               },
+               {
+                       "two jumps, two targets, already defined",
+                       "6161616301000000616302000000",
+                       func(t *testing.T, b *Builder) {
+                               b.AddOp(vm.OP_NOP)
+                               target1 := b.NewJumpTarget()
+                               b.SetJumpTarget(target1)
+                               b.AddOp(vm.OP_NOP)
+                               target2 := b.NewJumpTarget()
+                               b.SetJumpTarget(target2)
+                               b.AddOp(vm.OP_NOP)
+                               b.AddJump(target1)
+                               b.AddOp(vm.OP_NOP)
+                               b.AddJump(target2)
+                       },
+               },
+       }
+       for _, c := range cases {
+               t.Run(c.name, func(t *testing.T) {
+                       b := NewBuilder()
+                       c.fn(t, b)
+                       prog, err := b.Build()
+                       if err != nil {
+                               t.Fatal(err)
+                       }
+                       want, err := hex.DecodeString(c.wantHex)
+                       if err != nil {
+                               t.Fatal(err)
+                       }
+                       if !bytes.Equal(prog, want) {
+                               t.Errorf("got %x, want %x", prog, want)
+                       }
+               })
+       }
+}

diff --git a/vendor/github.com/bytom/protocol/vm/vmutil/script.go b/vendor/github.com/bytom/protocol/vm/vmutil/script.go
new file mode 100644 (file)
index 0000000..7cef891
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/vmutil/script.go
@@ -0,0 +1,154 @@
+package vmutil
+
+import (
+       "github.com/bytom/crypto/ed25519"
+       "github.com/bytom/errors"
+       "github.com/bytom/protocol/vm"
+)
+
+// pre-define errors
+var (
+       ErrBadValue       = errors.New("bad value")
+       ErrMultisigFormat = errors.New("bad multisig program format")
+)
+
+// IsUnspendable checks if a contorl program is absolute failed
+func IsUnspendable(prog []byte) bool {
+       return len(prog) > 0 && prog[0] == byte(vm.OP_FAIL)
+}
+
+func (b *Builder) addP2SPMultiSig(pubkeys []ed25519.PublicKey, nrequired int) error {
+       if err := checkMultiSigParams(int64(nrequired), int64(len(pubkeys))); err != nil {
+               return err
+       }
+
+       b.AddOp(vm.OP_TXSIGHASH) // stack is now [... NARGS SIG SIG SIG PREDICATEHASH]
+       for _, p := range pubkeys {
+               b.AddData(p)
+       }
+       b.AddInt64(int64(nrequired))    // stack is now [... SIG SIG SIG PREDICATEHASH PUB PUB PUB M]
+       b.AddInt64(int64(len(pubkeys))) // stack is now [... SIG SIG SIG PREDICATEHASH PUB PUB PUB M N]
+       b.AddOp(vm.OP_CHECKMULTISIG)    // stack is now [... NARGS]
+       return nil
+}
+
+// DefaultCoinbaseProgram generates the script for contorl coinbase output
+func DefaultCoinbaseProgram() ([]byte, error) {
+       builder := NewBuilder()
+       builder.AddOp(vm.OP_TRUE)
+       return builder.Build()
+}
+
+// P2WPKHProgram return the segwit pay to public key hash
+func P2WPKHProgram(hash []byte) ([]byte, error) {
+       builder := NewBuilder()
+       builder.AddInt64(0)
+       builder.AddData(hash)
+       return builder.Build()
+}
+
+// P2WSHProgram return the segwit pay to script hash
+func P2WSHProgram(hash []byte) ([]byte, error) {
+       builder := NewBuilder()
+       builder.AddInt64(0)
+       builder.AddData(hash)
+       return builder.Build()
+}
+
+// RetireProgram generates the script for retire output
+func RetireProgram(comment []byte) ([]byte, error) {
+       builder := NewBuilder()
+       builder.AddOp(vm.OP_FAIL)
+       if len(comment) != 0 {
+               builder.AddData(comment)
+       }
+       return builder.Build()
+}
+
+// P2PKHSigProgram generates the script for control with pubkey hash
+func P2PKHSigProgram(pubkeyHash []byte) ([]byte, error) {
+       builder := NewBuilder()
+       builder.AddOp(vm.OP_DUP)
+       builder.AddOp(vm.OP_HASH160)
+       builder.AddData(pubkeyHash)
+       builder.AddOp(vm.OP_EQUALVERIFY)
+       builder.AddOp(vm.OP_TXSIGHASH)
+       builder.AddOp(vm.OP_SWAP)
+       builder.AddOp(vm.OP_CHECKSIG)
+       return builder.Build()
+}
+
+// P2SHProgram generates the script for control with script hash
+func P2SHProgram(scriptHash []byte) ([]byte, error) {
+       builder := NewBuilder()
+       builder.AddOp(vm.OP_DUP)
+       builder.AddOp(vm.OP_SHA3)
+       builder.AddData(scriptHash)
+       builder.AddOp(vm.OP_EQUALVERIFY)
+       builder.AddInt64(-1)
+       builder.AddOp(vm.OP_SWAP)
+       builder.AddInt64(0)
+       builder.AddOp(vm.OP_CHECKPREDICATE)
+       return builder.Build()
+}
+
+// P2SPMultiSigProgram generates the script for control transaction output
+func P2SPMultiSigProgram(pubkeys []ed25519.PublicKey, nrequired int) ([]byte, error) {
+       builder := NewBuilder()
+       if err := builder.addP2SPMultiSig(pubkeys, nrequired); err != nil {
+               return nil, err
+       }
+       return builder.Build()
+}
+
+// P2SPMultiSigProgramWithHeight generates the script with block height for control transaction output
+func P2SPMultiSigProgramWithHeight(pubkeys []ed25519.PublicKey, nrequired int, blockHeight int64) ([]byte, error) {
+       builder := NewBuilder()
+       if blockHeight > 0 {
+               builder.AddInt64(blockHeight)
+               builder.AddOp(vm.OP_BLOCKHEIGHT)
+               builder.AddOp(vm.OP_GREATERTHAN)
+               builder.AddOp(vm.OP_VERIFY)
+       } else if blockHeight < 0 {
+               return nil, errors.WithDetail(ErrBadValue, "negative blockHeight")
+       }
+       if err := builder.addP2SPMultiSig(pubkeys, nrequired); err != nil {
+               return nil, err
+       }
+       return builder.Build()
+}
+
+func checkMultiSigParams(nrequired, npubkeys int64) error {
+       if nrequired < 0 {
+               return errors.WithDetail(ErrBadValue, "negative quorum")
+       }
+       if npubkeys < 0 {
+               return errors.WithDetail(ErrBadValue, "negative pubkey count")
+       }
+       if nrequired > npubkeys {
+               return errors.WithDetail(ErrBadValue, "quorum too big")
+       }
+       if nrequired == 0 && npubkeys > 0 {
+               return errors.WithDetail(ErrBadValue, "quorum empty with non-empty pubkey list")
+       }
+       return nil
+}
+
+// GetIssuanceProgramRestrictHeight return issuance program restrict height
+// if height invalid return 0
+func GetIssuanceProgramRestrictHeight(program []byte) int64 {
+       insts, err := vm.ParseProgram(program)
+       if err != nil {
+               return 0
+       }
+
+       if len(insts) >= 4 && insts[0].IsPushdata() && insts[1].Op == vm.OP_BLOCKHEIGHT && insts[2].Op == vm.OP_GREATERTHAN && insts[3].Op == vm.OP_VERIFY {
+               height, err := vm.AsInt64(insts[0].Data)
+               if err != nil {
+                       return 0
+               }
+
+               return height
+       }
+       return 0
+}

diff --git a/vendor/github.com/bytom/protocol/vm/vmutil/script_test.go b/vendor/github.com/bytom/protocol/vm/vmutil/script_test.go
new file mode 100644 (file)
index 0000000..b5c2b63
--- /dev/null
+++ b/vendor/github.com/bytom/protocol/vm/vmutil/script_test.go
@@ -0,0 +1,222 @@
+package vmutil
+
+import (
+       "encoding/hex"
+       "testing"
+
+       "github.com/bytom/crypto/ed25519"
+       "github.com/bytom/errors"
+)
+
+// TestIsUnspendable ensures the IsUnspendable function returns the expected
+// results.
+func TestIsUnspendable(t *testing.T) {
+       tests := []struct {
+               pkScript []byte
+               expected bool
+       }{
+               {
+                       // Unspendable
+                       pkScript: []byte{0x6a, 0x04, 0x74, 0x65, 0x73, 0x74},
+                       expected: true,
+               },
+               {
+                       // Spendable
+                       pkScript: []byte{0x76, 0xa9, 0x14, 0x29, 0x95, 0xa0,
+                               0xfe, 0x68, 0x43, 0xfa, 0x9b, 0x95, 0x45,
+                               0x97, 0xf0, 0xdc, 0xa7, 0xa4, 0x4d, 0xf6,
+                               0xfa, 0x0b, 0x5c, 0x88, 0xac},
+                       expected: false,
+               },
+       }
+
+       for i, test := range tests {
+               res := IsUnspendable(test.pkScript)
+               if res != test.expected {
+                       t.Errorf("TestIsUnspendable #%d failed: got %v want %v",
+                               i, res, test.expected)
+                       continue
+               }
+       }
+}
+
+func TestP2SPMultiSigProgram(t *testing.T) {
+       pub1, _ := hex.DecodeString("988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb6")
+       pub2, _ := hex.DecodeString("7192bf4eac0789ee19c88dfa87861cf59e215820f7bdb7be02761d9ed92e6c62")
+       pub3, _ := hex.DecodeString("8bcd251d9f4e03877130b6e6f1d577eda562375f07c3cdfad8f1d541002fd1a3")
+
+       tests := []struct {
+               pubkeys     []ed25519.PublicKey
+               nrequired   int
+               wantProgram string
+               wantErr     error
+       }{
+               {
+                       pubkeys:     []ed25519.PublicKey{pub1},
+                       nrequired:   1,
+                       wantProgram: "ae20988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb65151ad",
+               },
+               {
+                       pubkeys:     []ed25519.PublicKey{pub1, pub2},
+                       nrequired:   2,
+                       wantProgram: "ae20988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb6207192bf4eac0789ee19c88dfa87861cf59e215820f7bdb7be02761d9ed92e6c625252ad",
+               },
+               {
+                       pubkeys:     []ed25519.PublicKey{pub1, pub2, pub3},
+                       nrequired:   2,
+                       wantProgram: "ae20988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb6207192bf4eac0789ee19c88dfa87861cf59e215820f7bdb7be02761d9ed92e6c62208bcd251d9f4e03877130b6e6f1d577eda562375f07c3cdfad8f1d541002fd1a35253ad",
+               },
+               {
+                       pubkeys:   []ed25519.PublicKey{pub1},
+                       nrequired: -1,
+                       wantErr:   errors.WithDetail(ErrBadValue, "negative quorum"),
+               },
+               {
+                       pubkeys:   []ed25519.PublicKey{pub1},
+                       nrequired: 0,
+                       wantErr:   errors.WithDetail(ErrBadValue, "quorum empty with non-empty pubkey list"),
+               },
+               {
+                       pubkeys:   []ed25519.PublicKey{pub1, pub2},
+                       nrequired: 3,
+                       wantErr:   errors.WithDetail(ErrBadValue, "quorum too big"),
+               },
+       }
+
+       for i, test := range tests {
+               got, err := P2SPMultiSigProgram(test.pubkeys, test.nrequired)
+               if err != nil {
+                       if test.wantErr != nil && err.Error() != test.wantErr.Error() {
+                               t.Errorf("TestP2SPMultiSigProgram #%d failed: got %v want %v", i, err.Error(), test.wantErr.Error())
+                       } else if test.wantErr == nil {
+                               t.Fatal(err)
+                       }
+               }
+
+               if hex.EncodeToString(got) != test.wantProgram {
+                       t.Errorf("TestP2SPMultiSigProgram #%d failed: got %v want %v", i, hex.EncodeToString(got), test.wantProgram)
+               }
+       }
+}
+
+func TestP2SPMultiSigProgramWithHeight(t *testing.T) {
+       pub1, _ := hex.DecodeString("988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb6")
+       pub2, _ := hex.DecodeString("7192bf4eac0789ee19c88dfa87861cf59e215820f7bdb7be02761d9ed92e6c62")
+       pub3, _ := hex.DecodeString("8bcd251d9f4e03877130b6e6f1d577eda562375f07c3cdfad8f1d541002fd1a3")
+
+       tests := []struct {
+               pubkeys     []ed25519.PublicKey
+               nrequired   int
+               height      int64
+               wantProgram string
+               wantErr     error
+       }{
+               {
+                       pubkeys:     []ed25519.PublicKey{pub1},
+                       nrequired:   1,
+                       wantProgram: "ae20988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb65151ad",
+               },
+               {
+                       pubkeys:     []ed25519.PublicKey{pub1, pub2},
+                       nrequired:   2,
+                       wantProgram: "ae20988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb6207192bf4eac0789ee19c88dfa87861cf59e215820f7bdb7be02761d9ed92e6c625252ad",
+               },
+               {
+                       pubkeys:     []ed25519.PublicKey{pub1, pub2, pub3},
+                       nrequired:   2,
+                       wantProgram: "ae20988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb6207192bf4eac0789ee19c88dfa87861cf59e215820f7bdb7be02761d9ed92e6c62208bcd251d9f4e03877130b6e6f1d577eda562375f07c3cdfad8f1d541002fd1a35253ad",
+               },
+               {
+                       pubkeys:   []ed25519.PublicKey{pub1},
+                       nrequired: 1,
+                       height:    -1,
+                       wantErr:   errors.WithDetail(ErrBadValue, "negative blockHeight"),
+               },
+               {
+                       pubkeys:     []ed25519.PublicKey{pub1},
+                       nrequired:   1,
+                       height:      0,
+                       wantProgram: "ae20988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb65151ad",
+               },
+               {
+                       pubkeys:     []ed25519.PublicKey{pub1},
+                       nrequired:   1,
+                       height:      200,
+                       wantProgram: "01c8cda069ae20988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb65151ad",
+               },
+               {
+                       pubkeys:     []ed25519.PublicKey{pub1, pub2},
+                       nrequired:   2,
+                       height:      200,
+                       wantProgram: "01c8cda069ae20988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb6207192bf4eac0789ee19c88dfa87861cf59e215820f7bdb7be02761d9ed92e6c625252ad",
+               },
+               {
+                       pubkeys:     []ed25519.PublicKey{pub1, pub2, pub3},
+                       nrequired:   2,
+                       height:      200,
+                       wantProgram: "01c8cda069ae20988650ff921c82d47a953527894f792572ba63197c56e5fe79e5df0c444d6bb6207192bf4eac0789ee19c88dfa87861cf59e215820f7bdb7be02761d9ed92e6c62208bcd251d9f4e03877130b6e6f1d577eda562375f07c3cdfad8f1d541002fd1a35253ad",
+               },
+               {
+                       pubkeys:   []ed25519.PublicKey{pub1},
+                       nrequired: -1,
+                       wantErr:   errors.WithDetail(ErrBadValue, "negative quorum"),
+               },
+               {
+                       pubkeys:   []ed25519.PublicKey{pub1},
+                       nrequired: 0,
+                       wantErr:   errors.WithDetail(ErrBadValue, "quorum empty with non-empty pubkey list"),
+               },
+               {
+                       pubkeys:   []ed25519.PublicKey{pub1, pub2},
+                       nrequired: 3,
+                       wantErr:   errors.WithDetail(ErrBadValue, "quorum too big"),
+               },
+       }
+
+       for i, test := range tests {
+               got, err := P2SPMultiSigProgramWithHeight(test.pubkeys, test.nrequired, test.height)
+               if err != nil {
+                       if test.wantErr != nil && err.Error() != test.wantErr.Error() {
+                               t.Errorf("TestP2SPMultiSigProgram #%d failed: got %v want %v", i, err.Error(), test.wantErr.Error())
+                       } else if test.wantErr == nil {
+                               t.Fatal(err)
+                       }
+               }
+
+               if hex.EncodeToString(got) != test.wantProgram {
+                       t.Errorf("TestP2SPMultiSigProgram #%d failed: got %v want %v", i, hex.EncodeToString(got), test.wantProgram)
+               }
+       }
+}
+
+func TestGetIssuanceProgramRestrictHeight(t *testing.T) {
+       tests := []struct {
+               issuanceProgram string
+               wantHeight      int64
+       }{
+               {
+                       issuanceProgram: "",
+                       wantHeight:      0,
+               },
+               {
+                       issuanceProgram: "ae20ac20f5cdb9ada2ae9836bcfff32126d6b885aa3f73ee111a95d1bf37f3904aca5151ad",
+                       wantHeight:      0,
+               },
+               {
+                       issuanceProgram: "01c8cda069ae20f44dd85be89de08b0f894476ccc7b3eebcf0a288c79504fa7e4c8033f5b7338020c86dc682ce3ecac64e165d9b5f8cca9ee05bd0d4df07adbfd11251ad7e88f1685152ad",
+                       wantHeight:      200,
+               },
+       }
+
+       for i, test := range tests {
+               program, err := hex.DecodeString(test.issuanceProgram)
+               if err != nil {
+                       t.Fatal(err)
+               }
+
+               gotHeight := GetIssuanceProgramRestrictHeight(program)
+               if gotHeight != test.wantHeight {
+                       t.Errorf("TestGetIssuanceProgramRestrictHeight #%d failed: got %d want %d", i, gotHeight, test.wantHeight)
+               }
+       }
+}