private void Rho(ulong[] A)
{
for (int x = 0; x < 5; x++)
{
for (int y = 0; y < 5; y++)
{
int index = x + 5 * y;
A[index] = ((KeccakRhoOffsets[index] != 0) ? (((A[index]) << KeccakRhoOffsets[index]) ^ ((A[index]) >> (64 - KeccakRhoOffsets[index]))) : A[index]);
}
}
}