func TestNewED25519Signature(t *testing.T) {
testData := primitives.Sha([]byte("sig first half one")).Bytes()
priv := testHelper.NewPrivKey(0)
sig := NewED25519Signature(priv, testData)
pub := testHelper.PrivateKeyToEDPub(priv)
pub2 := [32]byte{}
copy(pub2[:], pub)
s := sig.Signature
valid := ed25519.VerifyCanonical(&pub2, testData, &s)
if valid == false {
t.Errorf("Signature is invalid - %v", valid)
}
priv2 := [64]byte{}
copy(priv2[:], append(priv, pub...)[:])
sig2 := ed25519.Sign(&priv2, testData)
valid = ed25519.VerifyCanonical(&pub2, testData, sig2)
if valid == false {
t.Errorf("Test signature is invalid - %v", valid)
}
}
func (auth *Authority) VerifySignature(msg []byte, sig *[constants.SIGNATURE_LENGTH]byte) (bool, error) {
//return true, nil // Testing
var pub [32]byte
tmp, err := auth.SigningKey.MarshalBinary()
if err != nil {
return false, err
} else {
copy(pub[:], tmp)
valid := ed.VerifyCanonical(&pub, msg, sig)
if !valid {
for _, histKey := range auth.KeyHistory {
histTemp, err := histKey.SigningKey.MarshalBinary()
if err != nil {
continue
}
copy(pub[:], histTemp)
if ed.VerifyCanonical(&pub, msg, sig) {
return true, nil
}
}
} else {
return true, nil
}
}
return false, nil
}
func (this *State) ExchangeRateAuthorityIsValid(e interfaces.IEBEntry) bool {
// convert the conf quthority address into a
authorityAddress := base58.Decode(this.ExchangeRateAuthorityAddress)
ecPubPrefix := []byte{0x59, 0x2a}
if !bytes.Equal(authorityAddress[:2], ecPubPrefix) {
fmt.Errorf("Invalid Entry Credit Private Address")
return false
}
pub := new([32]byte)
copy(pub[:], authorityAddress[2:34])
// in case verify can't handle empty public key
if this.ExchangeRateAuthorityAddress == "" {
return false
}
sig := new([64]byte)
externalIds := e.ExternalIDs()
// check for number of ext ids
if len(externalIds) < 1 {
return false
}
copy(sig[:], externalIds[0]) // First ext id needs to be the signature of the content
if !ed.VerifyCanonical(pub, e.GetContent(), sig) {
return false
}
return true
}
func (c *CommitEntry) IsValid() bool {
//double check the credits in the commit
if c.Credits < 1 || c.Version != 0 {
return false
}
return ed.VerifyCanonical((*[32]byte)(c.ECPubKey), c.CommitMsg(), (*[64]byte)(c.Sig))
}
func (c *CommitChain) IsValid() bool {
//double check the credits in the commit
if c.Credits < 1 || c.Version != 0 {
return false
}
return ed.VerifyCanonical(c.ECPubKey, c.CommitMsg(), c.Sig)
}
func (id *Identity) VerifySignature(msg []byte, sig *[constants.SIGNATURE_LENGTH]byte) (bool, error) {
//return true, nil // Testing
var pub [32]byte
tmp, err := id.SigningKey.MarshalBinary()
if err != nil {
return false, err
} else {
copy(pub[:], tmp)
valid := ed.VerifyCanonical(&pub, msg, sig)
if !valid {
} else {
return true, nil
}
}
return false, nil
}
// Sig is signed message, msg is raw message
func CheckSig(idKey interfaces.IHash, pub []byte, msg []byte, sig []byte) bool {
var pubFix [32]byte
var sigFix [64]byte
copy(pubFix[:], pub[:32])
copy(sigFix[:], sig[:64])
pre := make([]byte, 0)
pre = append(pre, []byte{0x01}...)
pre = append(pre, pubFix[:]...)
id := primitives.Shad(pre)
if id.IsSameAs(idKey) {
return ed.VerifyCanonical(&pubFix, msg, &sigFix)
} else {
return false
}
}
func (w RCD_1) CheckSig(trans interfaces.ITransaction, sigblk interfaces.ISignatureBlock) bool {
if sigblk == nil {
return false
}
data, err := trans.MarshalBinarySig()
if err != nil {
return false
}
signature := sigblk.GetSignature(0)
if signature == nil {
return false
}
cryptosig := signature.GetSignature()
if cryptosig == nil {
return false
}
return ed25519.VerifyCanonical(&w.PublicKey, data, cryptosig)
}
func TestSignatureBlock(t *testing.T) {
priv := testHelper.NewPrivKey(0)
testData, err := hex.DecodeString("00112233445566778899")
if err != nil {
t.Error(err)
}
sig := NewSingleSignatureBlock(priv, testData)
rcd := testHelper.NewFactoidRCDAddress(0)
pub := rcd.(*RCD_1).GetPublicKey()
pub2 := [32]byte{}
copy(pub2[:], pub)
s := sig.Signatures[0].(*FactoidSignature).Signature
valid := ed25519.VerifyCanonical(&pub2, testData, &s)
if valid == false {
t.Error("Invalid signature")
}
}
func VerifySignature(data, publicKey, signature []byte) error {
pub := [32]byte{}
sig := [64]byte{}
if len(publicKey) == 32 {
copy(pub[:], publicKey[:])
} else {
return fmt.Errorf("Invalid public key length")
}
if len(signature) == 64 {
copy(sig[:], signature[:])
} else {
return fmt.Errorf("Invalid signature length")
}
valid := ed25519.VerifyCanonical(&pub, data, &sig)
if valid == false {
return fmt.Errorf("Invalid signature")
}
return nil
}
// Verify returns true iff sig is a valid signature of message by publicKey.
func Verify(publicKey *[ed25519.PublicKeySize]byte, message []byte, sig *[ed25519.SignatureSize]byte) bool {
return ed25519.VerifyCanonical(publicKey, message, sig)
}
func (k *PublicKey) Verify(msg []byte, sig *[ed25519.SignatureSize]byte) bool {
return ed25519.VerifyCanonical((*[32]byte)(k), msg, sig)
}
// Verify returns true iff sig is a valid signature of msg by PublicKey.
func (sig *Signature) Verify(msg []byte) bool {
return ed25519.VerifyCanonical((*[32]byte)(sig.Pub), msg, (*[ed25519.SignatureSize]byte)(sig.Sig))
}
// Verify returns true iff sig is a valid signature of msg by PublicKey.
func (sig Signature) Verify(msg []byte) bool {
return ed25519.VerifyCanonical(sig.Pub.Key, msg, sig.Sig)
}
func (k PublicKey) Verify(msg []byte, sig *[ed25519.SignatureSize]byte) bool {
return ed25519.VerifyCanonical(k.Key, msg, sig)
}
func (c *CommitEntry) IsValid() bool {
return ed.VerifyCanonical(c.ECPubKey, c.CommitMsg(), c.Sig)
}
