public static bool VerifySignature(uint256 message, UnblindedSignature signature, PubKey signerPubKey)
{
var P = signerPubKey.ECKey.GetPublicKeyParameters().Q;
var sG = Secp256k1.G.Multiply(signature.S);
var cP = P.Multiply(signature.C);
var R = cP.Add(sG).Normalize();
var t = R.AffineXCoord.ToBigInteger().Mod(Secp256k1.N);
var c = new BigInteger(1, Hashes.SHA256(message.ToBytes(false).Concat(Utils.BigIntegerToBytes(t, 32))));
return(c.Equals(signature.C));
}
public bool VerifyUnblindedSignature(UnblindedSignature signature, byte[] data)
{
var hash = new uint256(Hashes.SHA256(data));
return(SchnorrBlinding.VerifySignature(hash, signature, Key.PubKey));
}
public bool VerifyUnblindedSignature(UnblindedSignature signature, uint256 dataHash)
{
return(SchnorrBlinding.VerifySignature(dataHash, signature, Key.PubKey));
}