rho.c

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#include "Keccak.h"

static unsigned char KeccakRhoOffsets[nrLanes] = {
    0,
    1,
    62,
    28,
    27,
    36,
    44,
    6,
    55,
    20,
    3,
    10,
    43,
    25,
    39,
    41,
    45,
    15,
    21,
    8,
    18,
    2,
    61,
    56,
    14
};

void rho(UINT64 *A)
{
    unsigned int x, y;

    for(x=0; x<5; x++) for(y=0; y<5; y++)
        A[index(x, y)] = ROL64(A[index(x, y)], KeccakRhoOffsets[index(x, y)]);
}