public static bool VerifySignature(byte[] message, byte[] signature, byte[] pubkey)
{
//unity dotnet不完整，不能用dotnet自带的ecdsa
var PublicKey = ThinNeo.Cryptography.ECC.ECPoint.DecodePoint(pubkey, ThinNeo.Cryptography.ECC.ECCurve.Secp256r1);
var ecdsa = new ThinNeo.Cryptography.ECC.ECDsa(PublicKey);
var b1 = signature.Take(32).Reverse().Concat(new byte[] { 0x00 }).ToArray();
var b2 = signature.Skip(32).Reverse().Concat(new byte[] { 0x00 }).ToArray();
var num1 = new BigInteger(b1);
var num2 = new BigInteger(b2);
var hash = sha256.ComputeHash(message);
return(ecdsa.VerifySignature(hash, num1, num2));
//var PublicKey = ThinNeo.Cryptography.ECC.ECPoint.DecodePoint(pubkey, ThinNeo.Cryptography.ECC.ECCurve.Secp256r1);
//var usepk = PublicKey.EncodePoint(false).Skip(1).ToArray();
////byte[] first = { 0x45, 0x43, 0x53, 0x31, 0x20, 0x00, 0x00, 0x00 };
////usepk = first.Concat(usepk).ToArray();
////using (System.Security.Cryptography.CngKey key = System.Security.Cryptography.CngKey.Import(usepk, System.Security.Cryptography.CngKeyBlobFormat.EccPublicBlob))
////using (System.Security.Cryptography.ECDsaCng ecdsa = new System.Security.Cryptography.ECDsaCng(key))
//using (var ecdsa = System.Security.Cryptography.ECDsa.Create(new System.Security.Cryptography.ECParameters
//{
// Curve = System.Security.Cryptography.ECCurve.NamedCurves.nistP256,
// Q = new System.Security.Cryptography.ECPoint
// {
// X = usepk.Take(32).ToArray(),
// Y = usepk.Skip(32).ToArray()
// }
//}))
//{
// var hash = sha256.ComputeHash(message);
// return ecdsa.VerifyHash(hash, signature);
//}
}
public bool VerifyHash(byte[] hash, byte[] signature)
{
var b1 = signature.Take(32).Reverse().Concat(new byte[] { 0x00 }).ToArray();
var b2 = signature.Skip(32).Reverse().Concat(new byte[] { 0x00 }).ToArray();
var num1 = new BigInteger(b1);
var num2 = new BigInteger(b2);
return(ecdsa.VerifySignature(hash, num1, num2));
}
public static bool VerifySignature(byte[] message, byte[] signature, byte[] pubkey)
{
//unity dotnet不完整，不能用dotnet自带的ecdsa
var PublicKey = ThinNeo.Cryptography.ECC.ECPoint.DecodePoint(pubkey, ThinNeo.Cryptography.ECC.ECCurve.Secp256r1);
var ecdsa = new ThinNeo.Cryptography.ECC.ECDsa(PublicKey);
var b1 = signature.Take(32).Reverse().Concat(new byte[] { 0x00 }).ToArray();
var b2 = signature.Skip(32).Reverse().Concat(new byte[] { 0x00 }).ToArray();
var num1 = new BigInteger(b1);
var num2 = new BigInteger(b2);
var hash = sha256.ComputeHash(message);
return(ecdsa.VerifySignature(hash, num1, num2));
}
