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