| private static KeccakInitializeRhoOffsets ( ) : int[] | ||
| return | int[] | |
private static int[] KeccakInitializeRhoOffsets()
{
int[] keccakRhoOffsets = new int[25];
int x, y, t, newX, newY;
int rhoOffset = 0;
keccakRhoOffsets[(((0) % 5) + 5 * ((0) % 5))] = rhoOffset;
x = 1;
y = 0;
for (t = 1; t < 25; t++)
{
//rhoOffset = ((t + 1) * (t + 2) / 2) % 64;
rhoOffset = (rhoOffset + t) & 63;
keccakRhoOffsets[(((x) % 5) + 5 * ((y) % 5))] = rhoOffset;
newX = (0 * x + 1 * y) % 5;
newY = (2 * x + 3 * y) % 5;
x = newX;
y = newY;
}
return keccakRhoOffsets;
}