Merge pull request #24 from O3Labs/verify-signature

added verify

neoutils/btckey/btckey.go

@@ -645,6 +645,9 @@ func Verify(publicKey []byte, signature []byte, hash []byte) bool {
 	p.Curve = elliptic.P256()
 	p.X = pub.X
 	p.Y = pub.Y
+	if p.X == nil || p.Y == nil {
+		return false
+	}
 	rBytes := new(big.Int).SetBytes(signature[0:32])
 	sBytes := new(big.Int).SetBytes(signature[32:64])
 	return ecdsa.Verify(p, hash, rBytes, sBytes)

neoutils/neowallet.go

@@ -136,3 +136,8 @@ func (w *Wallet) ComputeSharedSecret(publicKey []byte) []byte {
 func Sign(data []byte, key string) ([]byte, error) {
 	return btckey.Sign(data, key)
 }
+
+// Verify signed hash using public key
+func Verify(publicKey []byte, signature []byte, hash []byte) bool {
+	return btckey.Verify(publicKey, signature, hash)
+}

neoutils/smartcontract/parser_test.go

@@ -172,7 +172,7 @@ func TestParserNEP5Transfer(t *testing.T) {
 
 func TestParserNEP5TransferAnother(t *testing.T) {
 
-	p := smartcontract.NewParserWithScript("08bc3469730500000014f7eb6fc7827b6f56b92eae3610d041f93e34515214cf319d51f799ce27677782f599d154623c7abf0653c1087472616e7366657267187fc13bec8ff0906c079e7f4cc8276709472913")
+	p := smartcontract.NewParserWithScript("0500f902950014d7d92d13e360f3e8040b572a7d665951bf1ab7fb14b0b382920911028a2f90fcc93a69372375cbb89b53c1087472616e7366657267187fc13bec8ff0906c079e7f4cc8276709472913")
 
 	//the order of your method signature has the be exact to the one
 	//in your deployed smart contract

neoutils/version.go

@@ -1,9 +1,13 @@
 package neoutils
 
 const (
-	VERSION = "1.0.5"
+	VERSION = "1.0.6"
 )
 
+//RELEASE NOTES
+// V. 1.0.6
+// - Added Verify method to verify signed data
+
 //RELEASE NOTES
 // V. 1.0.5
 // - Added NEP6 Wallet format