public bool VerifySignature(BigInteger hash, ECSignature signature)
{
hash = Curve.TruncateHash(hash);
var w = signature.S.ModInverse(Curve.Order);
var u1 = (hash * w) % Curve.Order;
var u2 = (signature.R * w) % Curve.Order;
var p = Curve.G * u1 + Point * u2;
return(BigIntegerExt.ModEqual(signature.R, p.X, Curve.Order));
}
public bool Has(ECPoint p)
{
if (p == ECPoint.Infinity)
{
return(true);
}
var left = p.Y * p.Y;
var right = p.X * p.X * p.X + A * p.X + B;
return(BigIntegerExt.ModEqual(left, right, Modulus));
}