public string GetPublicKeyFromPrivateKey(string privateKey)
{
BigInteger p = BigInteger.Parse("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F", NumberStyles.HexNumber);
BigInteger b = (BigInteger)7;
BigInteger a = BigInteger.Zero;
BigInteger Gx = BigInteger.Parse("79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798", NumberStyles.HexNumber);
BigInteger Gy = BigInteger.Parse("483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8", NumberStyles.HexNumber);
CryptoCurve curve256 = new CryptoCurve(p, a, b);
CryptoPoint generator256 = new CryptoPoint(curve256, Gx, Gy);
BigInteger secret = BigInteger.Parse(privateKey, NumberStyles.HexNumber);
CryptoPoint pubkeyPoint = generator256 * secret;
return(pubkeyPoint.X.ToString("X") + pubkeyPoint.Y.ToString("X"));
}
public CryptoPoint(CryptoCurve curve, BigInteger x, BigInteger y)
{
this.Curve = curve;
this.X = x;
this.Y = y;
}
