public static long[] Signature(long h)
{
int ek = rnd.Next((int)EllipticCurves.q);
long[] R = EllipticCurves.Multiplication(EllipticCurves.G, ek);
long r = R[0];
long s = EllipticCurves.mod((h + EllipticCurves.d * r) * EllipticCurves.modInverse(ek, EllipticCurves.q), EllipticCurves.q);
return(new long[] { r, s });
}
public static bool SignatureVerification(long h, long[] signature)
{
long r = signature[0];
long s = signature[1];
long w = EllipticCurves.modInverse(s, EllipticCurves.q);
long u1 = EllipticCurves.mod(w * h, EllipticCurves.q);
long u2 = EllipticCurves.mod(w * r, EllipticCurves.q);
long[] P = EllipticCurves.Addition(EllipticCurves.Multiplication(EllipticCurves.G, u1), EllipticCurves.Multiplication(EllipticCurves.pk, u2));
return(EllipticCurves.mod(P[0], EllipticCurves.q) == EllipticCurves.mod(r, EllipticCurves.q));
}