本文整理汇总了Golang中github.com/agl/ed25519/edwards25519.ExtendedGroupElement类的典型用法代码示例。如果您正苦于以下问题:Golang ExtendedGroupElement类的具体用法?Golang ExtendedGroupElement怎么用?Golang ExtendedGroupElement使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了ExtendedGroupElement类的10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: Verify
// Verify returns true iff sig is a valid signature of message by publicKey.
func Verify(publicKey *[PublicKeySize]byte, message []byte, sig *[SignatureSize]byte) bool {
if sig[63]&224 != 0 {
return false
}
var A edwards25519.ExtendedGroupElement
if !A.FromBytes(publicKey) {
return false
}
edwards25519.FeNeg(&A.X, &A.X)
edwards25519.FeNeg(&A.T, &A.T)
h := sha512.New()
h.Write(sig[:32])
h.Write(publicKey[:])
h.Write(message)
var digest [64]byte
h.Sum(digest[:0])
var hReduced [32]byte
edwards25519.ScReduce(&hReduced, &digest)
var R edwards25519.ProjectiveGroupElement
var b [32]byte
copy(b[:], sig[32:])
edwards25519.GeDoubleScalarMultVartime(&R, &hReduced, &A, &b)
var checkR [32]byte
R.ToBytes(&checkR)
return subtle.ConstantTimeCompare(sig[:32], checkR[:]) == 1
}
开发者ID:kjplatz,项目名称:vic,代码行数:32,代码来源:ed25519.go
示例2: GenerateKey
// GenerateKey generates a public/private key pair using randomness from rand.
func GenerateKey(rand io.Reader) (publicKey *[PublicKeySize]byte, privateKey *[PrivateKeySize]byte, err error) {
privateKey = new([64]byte)
publicKey = new([32]byte)
_, err = io.ReadFull(rand, privateKey[:32])
if err != nil {
return nil, nil, err
}
h := sha512.New()
h.Write(privateKey[:32])
digest := h.Sum(nil)
digest[0] &= 248
digest[31] &= 127
digest[31] |= 64
var A edwards25519.ExtendedGroupElement
var hBytes [32]byte
copy(hBytes[:], digest)
edwards25519.GeScalarMultBase(&A, &hBytes)
A.ToBytes(publicKey)
copy(privateKey[32:], publicKey[:])
return
}
开发者ID:kjplatz,项目名称:vic,代码行数:26,代码来源:ed25519.go
示例3: PublicKeyToCurve25519
// PublicKeyToCurve25519 converts an Ed25519 public key into the curve25519
// public key that would be generated from the same private key.
func PublicKeyToCurve25519(curve25519Public *[32]byte, publicKey *[32]byte) bool {
var A edwards25519.ExtendedGroupElement
if !A.FromBytes(publicKey) {
return false
}
// A.Z = 1 as a postcondition of FromBytes.
var x edwards25519.FieldElement
edwardsToMontgomeryX(&x, &A.Y)
edwards25519.FeToBytes(curve25519Public, &x)
return true
}
开发者ID:FihlaTV,项目名称:bridge-server,代码行数:14,代码来源:extra25519.go
示例4: TestUnmarshalMarshal
func TestUnmarshalMarshal(t *testing.T) {
pk, _, _ := GenerateKey(rand.Reader)
var A edwards25519.ExtendedGroupElement
ret := A.FromBytes(pk)
var pk2 [32]byte
A.ToBytes(&pk2)
if *pk != pk2 {
_ = ret
t.Errorf("FromBytes(%v)->ToBytes not idempotent:\n%x\nbytes:\n\t%x\n\t%x\ndelta: %x\n", ret, A, *pk, pk2, int(pk[31])-int(pk2[31]))
}
}
开发者ID:yahoo,项目名称:ed25519,代码行数:14,代码来源:marshal_test.go
示例5: TestUnmarshalMarshalNegative
func TestUnmarshalMarshalNegative(t *testing.T) {
pk, _, _ := GenerateKey(rand.Reader)
var A edwards25519.ExtendedGroupElement
ret := A.FromBytes(pk)
var pk2 [32]byte
A.ToBytes(&pk2)
pk2[31] ^= 0x80
if *pk == pk2 {
t.Errorf("flipping sign did not change public key:\n%x\nbytes:\n\t%x\n\t%x\ndelta: %x\n", ret, A, *pk, pk2, int(pk[31])-int(pk2[31]))
}
}
开发者ID:yahoo,项目名称:ed25519,代码行数:14,代码来源:marshal_test.go
示例6: TestUnmarshalMarshal
func TestUnmarshalMarshal(t *testing.T) {
pub, _, _ := GenerateKey(rand.Reader)
var A edwards25519.ExtendedGroupElement
if !A.FromBytes(pub) {
t.Fatalf("ExtendedGroupElement.FromBytes failed")
}
var pub2 [32]byte
A.ToBytes(&pub2)
if *pub != pub2 {
t.Errorf("FromBytes(%v)->ToBytes does not round-trip, got %x\n", *pub, pub2)
}
}
开发者ID:zenododobird,项目名称:horizon,代码行数:15,代码来源:ed25519_test.go
示例7: Ed25519RederivePublic
// Rederive an Ed25519 public key from a private key.
func Ed25519RederivePublic(privateKey *[64]byte) (publicKey *[32]byte) {
h := sha512.New()
h.Write(privateKey[:32])
digest := h.Sum(nil)
digest[0] &= 248
digest[31] &= 127
digest[31] |= 64
var A edwards25519.ExtendedGroupElement
var hBytes [32]byte
copy(hBytes[:], digest)
edwards25519.GeScalarMultBase(&A, &hBytes)
publicKey = new([32]byte)
A.ToBytes(publicKey)
return
}
开发者ID:hlandau,项目名称:degoutils,代码行数:17,代码来源:spki.go
示例8: MakePublicKey
// MakePublicKey makes a publicKey from the first half of privateKey.
func MakePublicKey(privateKey *[PrivateKeySize]byte) (publicKey *[PublicKeySize]byte) {
publicKey = new([32]byte)
h := sha512.New()
h.Write(privateKey[:32])
digest := h.Sum(nil)
digest[0] &= 248
digest[31] &= 127
digest[31] |= 64
var A edwards25519.ExtendedGroupElement
var hBytes [32]byte
copy(hBytes[:], digest)
edwards25519.GeScalarMultBase(&A, &hBytes)
A.ToBytes(publicKey)
copy(privateKey[32:], publicKey[:])
return
}
开发者ID:eris-ltd,项目名称:toadserver,代码行数:21,代码来源:ed25519.go
示例9: Sign
// Sign signs the message with privateKey and returns a signature.
func Sign(privateKey *[PrivateKeySize]byte, message []byte) *[SignatureSize]byte {
h := sha512.New()
h.Write(privateKey[:32])
var digest1, messageDigest, hramDigest [64]byte
var expandedSecretKey [32]byte
h.Sum(digest1[:0])
copy(expandedSecretKey[:], digest1[:])
expandedSecretKey[0] &= 248
expandedSecretKey[31] &= 63
expandedSecretKey[31] |= 64
h.Reset()
h.Write(digest1[32:])
h.Write(message)
h.Sum(messageDigest[:0])
var messageDigestReduced [32]byte
edwards25519.ScReduce(&messageDigestReduced, &messageDigest)
var R edwards25519.ExtendedGroupElement
edwards25519.GeScalarMultBase(&R, &messageDigestReduced)
var encodedR [32]byte
R.ToBytes(&encodedR)
h.Reset()
h.Write(encodedR[:])
h.Write(privateKey[32:])
h.Write(message)
h.Sum(hramDigest[:0])
var hramDigestReduced [32]byte
edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
var s [32]byte
edwards25519.ScMulAdd(&s, &hramDigestReduced, &expandedSecretKey, &messageDigestReduced)
signature := new([64]byte)
copy(signature[:], encodedR[:])
copy(signature[32:], s[:])
return signature
}
开发者ID:kjplatz,项目名称:vic,代码行数:42,代码来源:ed25519.go
示例10: Sign
// Sign signs the message with privateKey and returns a signature.
func Sign(privateKey *[32]byte, message []byte, random [64]byte) *[64]byte {
// Calculate Ed25519 public key from Curve25519 private key
var A edwards25519.ExtendedGroupElement
var publicKey [32]byte
edwards25519.GeScalarMultBase(&A, privateKey)
A.ToBytes(&publicKey)
// Calculate r
diversifier := [32]byte{
0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}
var r [64]byte
h := sha512.New()
h.Write(diversifier[:])
h.Write(privateKey[:])
h.Write(message)
h.Write(random[:])
h.Sum(r[:0])
// Calculate R
var rReduced [32]byte
edwards25519.ScReduce(&rReduced, &r)
var R edwards25519.ExtendedGroupElement
edwards25519.GeScalarMultBase(&R, &rReduced)
var encodedR [32]byte
R.ToBytes(&encodedR)
// Calculate S = r + SHA2-512(R || A_ed || msg) * a (mod L)
var hramDigest [64]byte
h.Reset()
h.Write(encodedR[:])
h.Write(publicKey[:])
h.Write(message)
h.Sum(hramDigest[:0])
var hramDigestReduced [32]byte
edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
var s [32]byte
edwards25519.ScMulAdd(&s, &hramDigestReduced, privateKey, &rReduced)
signature := new([64]byte)
copy(signature[:], encodedR[:])
copy(signature[32:], s[:])
signature[63] |= publicKey[31] & 0x80
return signature
}
开发者ID:mutantmonkey,项目名称:textsecure,代码行数:53,代码来源:curve25519sign.go
注:本文中的github.com/agl/ed25519/edwards25519.ExtendedGroupElement类示例整理自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。 |
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