// log file name
LogFile string `mapstructure:"log_file"`
+
+ // Cipher Service Provider
+ // CipherServiceProvider string `mapstructure:"csp"`
}
// Default configurable base parameters.
DBPath: "data",
KeysPath: "keystore",
NodeAlias: "",
+ // CipherServiceProvider: "ed25519",
}
}
--- /dev/null
+// csp is a package of cipher service provider
+
+package csp
+
+import (
+ "crypto"
+)
+
+// var currentCrypt XXXXX
+
+// var (
+// currentCrypto map[string]XXXX
+// )
+
+// func init() {
+// currentCrypt = currentCrypto[config。？？？？？]
+// }
+
+type XPrvKeyer interface {
+ // XPub derives an extended public key from a given xprv.
+ XPub() XPubKeyer
+ // 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)...`
+ Derive(path [][]byte) XPrvKeyer
+ // Sign creates an EdDSA signature using expanded private key
+ // derived from the xprv.
+ Sign(msg []byte) []byte
+}
+
+type XPubKeyer interface {
+ // PublicKey extracts the public key from an xpub.
+ PublicKey() crypto.PublicKey
+ // 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)...`
+ Derive(path [][]byte) XPubKeyer
+ // Verify checks an EdDSA signature using public key
+ Verify(msg []byte, sig []byte) bool
+}
+++ /dev/null
-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
-}
+++ /dev/null
-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
-}
+++ /dev/null
-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
-}
+++ /dev/null
-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
-}
+++ /dev/null
-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/vapor/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,
- }
-}
+++ /dev/null
-/*
-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")
- }
- }
-}
+++ /dev/null
-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
-}
+++ /dev/null
-// 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/vapor/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, ¶ms); 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
-}
+++ /dev/null
-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)
-}
+++ /dev/null
-/*
-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)
- }
-}
"github.com/vapor/crypto"
"github.com/vapor/crypto/ed25519"
- "github.com/vapor/crypto/sm3"
"github.com/vapor/math/checked"
)
return vm.push(crypto.Ripemd160(data), false)
}
-
-func opSm3(vm *virtualMachine) error {
- return doHash(vm, sm3.New)
-}
}
func TestCryptoOps(t *testing.T) {
- OP_SM3 := Op(0xb0)
- ops[OP_SM3] = opInfo{OP_SM3, "SM3", opSm3}
-
type testStruct struct {
op Op
startVM *virtualMachine
}},
},
}, {
- 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,
wantErr: ErrRunLimitExceeded,
}}
- hashOps := []Op{OP_SHA256, OP_SHA3, OP_SM3}
+ hashOps := []Op{OP_SHA256, OP_SHA3}
for _, op := range hashOps {
cases = append(cases, testStruct{
op: op,
OSDN Git Service
