permutations.c

#include "permutations.h"

#include "round.h"

#if !ASCON_UNROLL_LOOPS || ASCON_SINGLE_PERM

const uint8_t constants[][2] = {{0xc, 0xc}, {0x9, 0xc}, {0xc, 0x9}, {0x9, 0x9},
                                {0x6, 0xc}, {0x3, 0xc}, {0x6, 0x9}, {0x3, 0x9},
                                {0xc, 0x6}, {0x9, 0x6}, {0xc, 0x3}, {0x9, 0x3}};

#endif

#if ASCON_INLINE_PERM

#elif ASCON_SINGLE_PERM

void P(state_t* s, uint8_t rounds) {
  printstate(" permutation input", s);
  for (int i = START(rounds); i < 12; i++)
    ROUND(s, constants[i][0], constants[i][1]);
}

#else /* !ASCON_INLINE_PERM && !ASCON_SINGLE_PERM */

void P12(state_t* s) { P12ROUNDS(s); }

#if defined(CRYPTO_ABYTES) && ASCON_RATE == 16
void P8(state_t* s) { P8ROUNDS(s); }
#endif

#if defined(CRYPTO_ABYTES) && ASCON_RATE == 8
void P6(state_t* s) { P6ROUNDS(s); }
#endif

#endif