Golang elliptic.Unmarshal函数代码示例

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本文整理汇总了Golang中crypto/elliptic.Unmarshal函数的典型用法代码示例。如果您正苦于以下问题：Golang Unmarshal函数的具体用法？Golang Unmarshal怎么用？Golang Unmarshal使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了Unmarshal函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: UnmarshalMark

func UnmarshalMark(c elliptic.Curve, bytes []byte) *Mark {
	bytelen := (c.Params().BitSize + 7) >> 3
	pointlen := 1 + 2*bytelen
	if len(bytes) != 2*pointlen {
		return nil
	}
	ret := new(Mark)
	ret.ax, ret.ay = elliptic.Unmarshal(c, bytes[:pointlen])
	ret.bx, ret.by = elliptic.Unmarshal(c, bytes[pointlen:2*pointlen])
	return ret
}

开发者ID:wbl，项目名称:mozvote，代码行数:11，代码来源:checkbox.go

示例2: readECPoint

// Decode Q point from CKA_EC_POINT attribute
func readECPoint(curve elliptic.Curve, ecpoint []byte) (*big.Int, *big.Int) {
	x, y := elliptic.Unmarshal(curve, ecpoint)
	if x == nil {
		// http://docs.oasis-open.org/pkcs11/pkcs11-curr/v2.40/os/pkcs11-curr-v2.40-os.html#_ftn1
		// PKCS#11 v2.20 specified that the CKA_EC_POINT was to be store in a DER-encoded
		// OCTET STRING.
		var point asn1.RawValue
		asn1.Unmarshal(ecpoint, &point)
		if len(point.Bytes) > 0 {
			x, y = elliptic.Unmarshal(curve, point.Bytes)
		}
	}
	return x, y
}

开发者ID:bretthoerner，项目名称:boulder，代码行数:15，代码来源:key.go

示例3: loadPublicKey

func loadPublicKey(csr *CertificateSignatureRequest, req *certificateRequest) bool {
	var pkInfo = req.Info.PKInfo
	var algo = pkInfo.Algorithm.Algorithm
	switch {
	case algo.Equal(asn1RSAEncryption):
		csr.Algo = RSA
		var pub rsa.PublicKey
		_, err := asn1.Unmarshal(pkInfo.Public.Bytes, &pub)
		if err != nil {
			return false
		}
		csr.Public = pub
		return true
	case algo.Equal(asn1ECCEncryption):
		csr.Algo = ECDSA
		var pub ecdsa.PublicKey
		curveOID := decodeOID(req.Info.PKInfo.Algorithm.Parameters.FullBytes)
		if curveOID == nil {
			return false
		}
		pub.Curve = oidToCurve(curveOID)
		if pub.Curve == nil {
			return false
		}
		pub.X, pub.Y = elliptic.Unmarshal(pub.Curve, req.Info.PKInfo.Public.Bytes)
		if pub.X == nil {
			return false
		}
		csr.Public = pub
		return true
	default:
		return false
	}
}

开发者ID:postfix，项目名称:csr，代码行数:34，代码来源:decode.go

示例4: UnmarshalPublic

// Decode a DER-encoded public key.
func UnmarshalPublic(in []byte) (pub *PublicKey, err error) {
	var subj asnSubjectPublicKeyInfo

	if _, err = asn1.Unmarshal(in, &subj); err != nil {
		return
	}
	if !subj.Algorithm.Equal(idEcPublicKeySupplemented) {
		err = ErrInvalidPublicKey
		return
	}
	pub = new(PublicKey)
	pub.Curve = namedCurveFromOID(subj.Supplements.ECDomain)
	x, y := elliptic.Unmarshal(pub.Curve, subj.PublicKey.Bytes)
	if x == nil {
		err = ErrInvalidPublicKey
		return
	}
	pub.X = x
	pub.Y = y
	pub.Params = new(ECIESParams)
	asnECIEStoParams(subj.Supplements.ECCAlgorithms.ECIES, pub.Params)
	asnECDHtoParams(subj.Supplements.ECCAlgorithms.ECDH, pub.Params)
	if pub.Params == nil {
		if pub.Params = ParamsFromCurve(pub.Curve); pub.Params == nil {
			err = ErrInvalidPublicKey
		}
	}
	return
}

开发者ID:j4ustin，项目名称:go-ethereum，代码行数:30，代码来源:asn1.go

示例5: CreateExchangedCipher

func CreateExchangedCipher(peerPub, priv []byte) (Cipher, Cipher, error) {
	x, y := elliptic.Unmarshal(curve, peerPub)

	sx, _ := curve.ScalarMult(x, y, priv)

	secret := cryptohash(sx.Bytes())

	aesKey1 := secret[0:aes.BlockSize]
	aesKey2 := secret[aes.BlockSize : 2*aes.BlockSize]
	vector1 := secret[2*aes.BlockSize : 3*aes.BlockSize]
	vector2 := secret[3*aes.BlockSize : 4*aes.BlockSize]

	block1, err := aes.NewCipher(aesKey1)

	if err != nil {
		return nil, nil, err
	}

	block2, err := aes.NewCipher(aesKey2)

	if err != nil {
		return nil, nil, err
	}

	stream1 := cipher.NewOFB(block1, vector1)
	stream2 := cipher.NewOFB(block2, vector2)

	return stream1, stream2, nil
}

开发者ID:rovaughn，项目名称:nimbus，代码行数:29，代码来源:encryption.go

示例6: VerifyHash

// verify a signature given the hash
func (v *ECDSAVerifier) VerifyHash(h, sig []byte) (err error) {
	r, s := elliptic.Unmarshal(v.c, sig)
	if r == nil || s == nil || !ecdsa.Verify(v.k, h, r, s) {
		err = ErrInvalidSignature
	}
	return
}

开发者ID:majestrate，项目名称:go-i2p，代码行数:8，代码来源:ecdsa.go

示例7: ToECDSAPub

func ToECDSAPub(pub []byte) *ecdsa.PublicKey {
	if len(pub) == 0 {
		return nil
	}
	x, y := elliptic.Unmarshal(secp256k1.S256(), pub)
	return &ecdsa.PublicKey{Curve: secp256k1.S256(), X: x, Y: y}
}

开发者ID:expanse-project，项目名称:go-expanse，代码行数:7，代码来源:crypto.go

示例8: UnmarshalSignerProto

// UnmarshalSignerProto decodes a signing key from a CryptoKey protobuf
// message.
func UnmarshalSignerProto(ck *CryptoKey) (*Signer, error) {
	if *ck.Version != CryptoVersion_CRYPTO_VERSION_1 {
		return nil, newError("bad version")
	}

	if *ck.Purpose != CryptoKey_SIGNING {
		return nil, newError("bad purpose")
	}

	if *ck.Algorithm != CryptoKey_ECDSA_SHA {
		return nil, newError("bad algorithm")
	}

	var k ECDSA_SHA_SigningKeyV1
	defer ZeroBytes(k.EcPrivate)
	if err := proto.Unmarshal(ck.Key, &k); err != nil {
		return nil, err
	}

	if *k.Curve != NamedEllipticCurve_PRIME256_V1 {
		return nil, newError("bad Curve")
	}

	x, y := elliptic.Unmarshal(elliptic.P256(), k.EcPublic)
	pk := &ecdsa.PrivateKey{
		D: new(big.Int).SetBytes(k.EcPrivate),
		PublicKey: ecdsa.PublicKey{
			Curve: elliptic.P256(),
			X:     x,
			Y:     y,
		},
	}

	return &Signer{pk}, nil
}

开发者ID:kevinawalsh，项目名称:cloudproxy，代码行数:37，代码来源:keys.go

示例9: parseECDSA

// parseECDSA parses an ECDSA key according to RFC 5656, section 3.1.
func parseECDSA(in []byte) (out PublicKey, rest []byte, err error) {
	var identifier []byte
	var ok bool
	if identifier, in, ok = parseString(in); !ok {
		return nil, nil, errShortRead
	}

	key := new(ecdsa.PublicKey)

	switch string(identifier) {
	case "nistp256":
		key.Curve = elliptic.P256()
	case "nistp384":
		key.Curve = elliptic.P384()
	case "nistp521":
		key.Curve = elliptic.P521()
	default:
		return nil, nil, errors.New("ssh: unsupported curve")
	}

	var keyBytes []byte
	if keyBytes, in, ok = parseString(in); !ok {
		return nil, nil, errShortRead
	}

	key.X, key.Y = elliptic.Unmarshal(key.Curve, keyBytes)
	if key.X == nil || key.Y == nil {
		return nil, nil, errors.New("ssh: invalid curve point")
	}
	return (*ecdsaPublicKey)(key), in, nil
}

开发者ID:Jitendrakry，项目名称:fleet，代码行数:32，代码来源:keys.go

示例10: UnmarshalBinary

func (p *curvePoint) UnmarshalBinary(buf []byte) error {
	p.x, p.y = elliptic.Unmarshal(p.c, buf)
	if p.x == nil || !p.Valid() {
		return errors.New("invalid elliptic curve point")
	}
	return nil
}

开发者ID:Liamsi，项目名称:crypto，代码行数:7，代码来源:curve.go

示例11: UnmarshalSignerProto

// UnmarshalSignerProto decodes a signing key from a CryptoKey protobuf
// message.
func UnmarshalSignerProto(ck *CryptoKey) (*Signer, error) {
	if *ck.Version != CryptoVersion_CRYPTO_VERSION_1 {
		return nil, newError("bad version")
	}

	if *ck.Purpose != CryptoKey_SIGNING {
		return nil, newError("bad purpose")
	}

	if *ck.Algorithm != CryptoKey_ECDSA_SHA {
		return nil, newError("bad algorithm")
	}

	k := new(ECDSA_SHA_SigningKeyV1)
	defer ZeroBytes(k.EcPrivate)
	if err := proto.Unmarshal(ck.Key, k); err != nil {
		return nil, err
	}

	if *k.Curve != NamedEllipticCurve_PRIME256_V1 {
		return nil, newError("bad Curve")
	}

	s := new(Signer)
	s.ec = new(ecdsa.PrivateKey)
	s.ec.D = new(big.Int).SetBytes(k.EcPrivate)
	s.ec.Curve = elliptic.P256()
	s.ec.X, s.ec.Y = elliptic.Unmarshal(elliptic.P256(), k.EcPublic)
	if s.ec.X == nil || s.ec.Y == nil {
		return nil, fmt.Errorf("failed to unmarshal EC point: X=%v, Y=%v", s.ec.X, s.ec.Y)
	}

	return s, nil
}

开发者ID:tmroeder，项目名称:cloudproxy，代码行数:36，代码来源:keys.go

示例12: Decrypt

// Decrypt authentications and recovers the original message from
// its input using the private key and the ephemeral key included in
// the message.
func Decrypt(priv *ecdsa.PrivateKey, in []byte) (out []byte, err error) {
	ephLen := int(in[0])
	ephPub := in[1 : 1+ephLen]
	ct := in[1+ephLen:]
	if len(ct) < (sha1.Size + aes.BlockSize) {
		return nil, errors.New("Invalid ciphertext")
	}

	x, y := elliptic.Unmarshal(Curve(), ephPub)
	if x == nil {
		return nil, errors.New("Invalid public key")
	}

	x, _ = priv.Curve.ScalarMult(x, y, priv.D.Bytes())
	if x == nil {
		return nil, errors.New("Failed to generate encryption key")
	}
	shared := sha256.Sum256(x.Bytes())

	tagStart := len(ct) - sha1.Size
	h := hmac.New(sha1.New, shared[16:])
	h.Write(ct[:tagStart])
	mac := h.Sum(nil)
	if !hmac.Equal(mac, ct[tagStart:]) {
		return nil, errors.New("Invalid MAC")
	}

	paddedOut, err := symcrypt.DecryptCBC(ct[aes.BlockSize:tagStart], ct[:aes.BlockSize], shared[:16])
	if err != nil {
		return
	}
	out, err = padding.RemovePadding(paddedOut)
	return
}

开发者ID:hannson，项目名称:redoctober，代码行数:37，代码来源:ecdh.go

示例13: parseECDSA

// parseECDSA parses an ECDSA key according to RFC 5656, section 3.1.
func parseECDSA(in []byte) (out *ecdsa.PublicKey, rest []byte, ok bool) {
	var identifier []byte
	if identifier, in, ok = parseString(in); !ok {
		return
	}

	key := new(ecdsa.PublicKey)

	switch string(identifier) {
	case "nistp256":
		key.Curve = elliptic.P256()
	case "nistp384":
		key.Curve = elliptic.P384()
	case "nistp521":
		key.Curve = elliptic.P521()
	default:
		ok = false
		return
	}

	var keyBytes []byte
	if keyBytes, in, ok = parseString(in); !ok {
		return
	}

	key.X, key.Y = elliptic.Unmarshal(key.Curve, keyBytes)
	if key.X == nil || key.Y == nil {
		ok = false
		return
	}
	return key, in, ok
}

开发者ID:yinwer81，项目名称:haproxyconsole，代码行数:33，代码来源:keys.go

示例14: ToECDSAPub

func ToECDSAPub(pub []byte) *ecdsa.PublicKey {
	if len(pub) == 0 {
		return nil
	}
	x, y := elliptic.Unmarshal(S256(), pub)
	return &ecdsa.PublicKey{S256(), x, y}
}

开发者ID:Cisko-Rijken，项目名称:go-expanse，代码行数:7，代码来源:crypto.go

示例15: processServerKeyExchange

func (ka *ecdheKeyAgreement) processServerKeyExchange(config *Config, clientHello *clientHelloMsg, serverHello *serverHelloMsg, cert *x509.Certificate, skx *serverKeyExchangeMsg) error {
	if len(skx.key) < 4 {
		return errServerKeyExchange
	}
	if skx.key[0] != 3 { // named curve
		return errors.New("tls: server selected unsupported curve")
	}
	curveid := CurveID(skx.key[1])<<8 | CurveID(skx.key[2])

	var ok bool
	if ka.curve, ok = curveForCurveID(curveid); !ok {
		return errors.New("tls: server selected unsupported curve")
	}

	publicLen := int(skx.key[3])
	if publicLen+4 > len(skx.key) {
		return errServerKeyExchange
	}
	ka.x, ka.y = elliptic.Unmarshal(ka.curve, skx.key[4:4+publicLen])
	if ka.x == nil {
		return errServerKeyExchange
	}
	serverECDHParams := skx.key[:4+publicLen]
	sig := skx.key[4+publicLen:]

	return ka.auth.verifyParameters(config, clientHello, serverHello, cert, serverECDHParams, sig)
}

开发者ID:hoangmichel，项目名称:webrtc，代码行数:27，代码来源:key_agreement.go

示例16: processClientKeyExchange

func (ka *ecdheKeyAgreement) processClientKeyExchange(config *Config, cert *Certificate, ckx *clientKeyExchangeMsg, version uint16) ([]byte, error) {
	if len(ckx.ciphertext) == 0 || int(ckx.ciphertext[0]) != len(ckx.ciphertext)-1 {
		return nil, errClientKeyExchange
	}

	if ka.curveid == X25519 {
		if len(ckx.ciphertext) != 1+32 {
			return nil, errClientKeyExchange
		}

		var theirPublic, sharedKey, scalar [32]byte
		copy(theirPublic[:], ckx.ciphertext[1:])
		copy(scalar[:], ka.privateKey)
		curve25519.ScalarMult(&sharedKey, &scalar, &theirPublic)
		return sharedKey[:], nil
	}

	curve, ok := curveForCurveID(ka.curveid)
	if !ok {
		panic("internal error")
	}
	x, y := elliptic.Unmarshal(curve, ckx.ciphertext[1:])
	if x == nil {
		return nil, errClientKeyExchange
	}
	if !curve.IsOnCurve(x, y) {
		return nil, errClientKeyExchange
	}
	x, _ = curve.ScalarMult(x, y, ka.privateKey)
	preMasterSecret := make([]byte, (curve.Params().BitSize+7)>>3)
	xBytes := x.Bytes()
	copy(preMasterSecret[len(preMasterSecret)-len(xBytes):], xBytes)

	return preMasterSecret, nil
}

开发者ID:achanda，项目名称:go，代码行数:35，代码来源:key_agreement.go

示例17: UnmarshalVerifierProto

// UnmarshalVerifierProto decodes a verifying key from a CryptoKey protobuf
// message.
func UnmarshalVerifierProto(ck *CryptoKey) (*Verifier, error) {
	if *ck.Version != CryptoVersion_CRYPTO_VERSION_1 {
		return nil, newError("bad version")
	}

	if *ck.Purpose != CryptoKey_VERIFYING {
		return nil, newError("bad purpose")
	}

	if *ck.Algorithm != CryptoKey_ECDSA_SHA {
		return nil, newError("bad algorithm")
	}

	k := new(ECDSA_SHA_VerifyingKeyV1)
	if err := proto.Unmarshal(ck.Key, k); err != nil {
		return nil, err
	}

	if *k.Curve != NamedEllipticCurve_PRIME256_V1 {
		return nil, newError("bad curve")
	}

	s := new(Verifier)
	s.ec = new(ecdsa.PublicKey)
	s.ec.Curve = elliptic.P256()
	s.ec.X, s.ec.Y = elliptic.Unmarshal(elliptic.P256(), k.EcPublic)
	return s, nil
}

开发者ID:tmroeder，项目名称:cloudproxy，代码行数:30，代码来源:keys.go

示例18: parseECDSA

// parseECDSA parses an ECDSA key according to RFC 5656, section 3.1.
func parseECDSA(in []byte) (out PublicKey, rest []byte, err error) {
	var w struct {
		Curve    string
		KeyBytes []byte
		Rest     []byte `ssh:"rest"`
	}

	if err := Unmarshal(in, &w); err != nil {
		return nil, nil, err
	}

	key := new(ecdsa.PublicKey)

	switch w.Curve {
	case "nistp256":
		key.Curve = elliptic.P256()
	case "nistp384":
		key.Curve = elliptic.P384()
	case "nistp521":
		key.Curve = elliptic.P521()
	default:
		return nil, nil, errors.New("ssh: unsupported curve")
	}

	key.X, key.Y = elliptic.Unmarshal(key.Curve, w.KeyBytes)
	if key.X == nil || key.Y == nil {
		return nil, nil, errors.New("ssh: invalid curve point")
	}
	return (*ecdsaPublicKey)(key), w.Rest, nil
}

开发者ID:backkom，项目名称:leanote-all，代码行数:31，代码来源:keys.go

示例19: Encrypt

// Encrypt plainText into an Encrypted Message using the given public key.
func Encrypt(log chan string, dest_pubkey []byte, plainText string) *EncryptedMessage {
	// Generate New Public/Private Key Pair
	D1, X1, Y1 := CreateKey(log)
	// Unmarshal the Destination's Pubkey
	X2, Y2 := elliptic.Unmarshal(elliptic.P256(), dest_pubkey)

	// Point Multiply to get new Pubkey
	PubX, PubY := elliptic.P256().ScalarMult(X2, Y2, D1)

	// Generate Pubkey hashes
	PubHash := sha512.Sum512(elliptic.Marshal(elliptic.P256(), PubX, PubY))
	PubHash_E := PubHash[:32]
	PubHash_M := PubHash[32:64]

	IV, cipherText, _ := SymmetricEncrypt(PubHash_E, plainText)

	// Generate HMAC
	mac := hmac.New(sha256.New, PubHash_M)
	mac.Write(cipherText)
	HMAC := mac.Sum(nil)

	ret := new(EncryptedMessage)
	copy(ret.IV[:], IV[:])
	copy(ret.PublicKey[:], elliptic.Marshal(elliptic.P256(), X1, Y1))
	ret.CipherText = cipherText
	copy(ret.HMAC[:], HMAC)

	return ret
}

开发者ID:kyonetca，项目名称:emp，代码行数:30，代码来源:message.go

示例20: ComputeSharedKey

// ComputeSharedKey computes and returns the shared key based on the local private key and the remote public key.
func (this *p256) ComputeSharedKey(remotePublicKey []byte) (error, []byte) {
	remotePublicX, remotePublicY := elliptic.Unmarshal(this.curve, remotePublicKey)
	if !this.curve.IsOnCurve(remotePublicX, remotePublicY) {
		return errors.New("ECDH : invalid P-256 KeyExchange"), nil
	}
	x, _ := this.curve.ScalarMult(remotePublicX, remotePublicY, this.privateKey)
	return nil, x.Bytes()
}

开发者ID:lewdon，项目名称:quic，代码行数:9，代码来源:p256.go

注：本文中的crypto/elliptic.Unmarshal函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。