Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / vendor / github.com / tendermint / go-crypto / nano / sign.go

diff --git a/vendor/github.com/tendermint/go-crypto/nano/sign.go b/vendor/github.com/tendermint/go-crypto/nano/sign.go
deleted file mode 100644 (file)
index c408015..0000000
--- a/vendor/github.com/tendermint/go-crypto/nano/sign.go
+++ /dev/null
@@ -1,63 +0,0 @@
-package nano
-
-import (
-       "bytes"
-       "crypto/sha512"
-
-       "github.com/pkg/errors"
-)
-
-const (
-       App       = 0x80
-       Init      = 0x00
-       Update    = 0x01
-       Digest    = 0x02
-       MaxChunk  = 253
-       KeyLength = 32
-       SigLength = 64
-)
-
-var separator = []byte{0, 0xCA, 0xFE, 0}
-
-func generateSignRequests(payload []byte) [][]byte {
-       // nice one-shot
-       digest := []byte{App, Digest}
-       if len(payload) < MaxChunk {
-               return [][]byte{append(digest, payload...)}
-       }
-
-       // large payload is multi-chunk
-       result := [][]byte{{App, Init}}
-       update := []byte{App, Update}
-       for len(payload) > MaxChunk {
-               msg := append(update, payload[:MaxChunk]...)
-               payload = payload[MaxChunk:]
-               result = append(result, msg)
-       }
-       result = append(result, append(update, payload...))
-       result = append(result, digest)
-       return result
-}
-
-func parseDigest(resp []byte) (key, sig []byte, err error) {
-       if resp[0] != App || resp[1] != Digest {
-               return nil, nil, errors.New("Invalid header")
-       }
-       resp = resp[2:]
-       if len(resp) != KeyLength+SigLength+len(separator) {
-               return nil, nil, errors.Errorf("Incorrect length: %d", len(resp))
-       }
-
-       key, resp = resp[:KeyLength], resp[KeyLength:]
-       if !bytes.Equal(separator, resp[:len(separator)]) {
-               return nil, nil, errors.New("Cannot find 0xCAFE")
-       }
-
-       sig = resp[len(separator):]
-       return key, sig, nil
-}
-
-func hashMsg(data []byte) []byte {
-       res := sha512.Sum512(data)
-       return res[:]
-}