public static BigInteger computeZ(byte[] bytes, EllipticCurve theCurve)
{
BitArray hashBitArray = new BitArray(bytes);
hashBitArray.RightShift(hashBitArray.Length - BitOperations.getBits(theCurve.p).Length);
hashBitArray.CopyTo(bytes, 0);
return(new BigInteger(bytes));
}
public static EllipticCurvePoint multiplyPoint(BigInteger prk, EllipticCurvePoint point, EllipticCurve curve)
{
if (prk == 0)
{
return new EllipticCurvePoint {
x = 0, y = 0
}
}
;
int[] bits = BitOperations.getBits(prk);
int index = 0;
EllipticCurvePoint initial = point;
while (bits[index] == 0)
{
initial = PointDoubling.doublePoint(curve, initial);
index++;
}
return(getResult(bits, index + 1, curve, initial));
}
