public void ExponentiateX(long pow, byte[] output)
{
// Initial value is little-endian 1
byte[] y = GcmUtilities.OneAsBytes();
if (pow > 0)
{
byte[] powX = Arrays.Clone(x);
do
{
if ((pow & 1L) != 0)
{
GcmUtilities.Multiply(y, powX);
}
GcmUtilities.Multiply(powX, powX);
pow >>= 1;
}while (pow > 0);
}
Array.Copy(y, 0, output, 0, 16);
}
public void MultiplyH(byte[] x)
{
GcmUtilities.Multiply(x, H);
}