diff options
Diffstat (limited to 'digest.c')
| -rw-r--r-- | digest.c | 51 |
1 files changed, 16 insertions, 35 deletions
@@ -2,34 +2,15 @@ #include "common.h" -/** - * X-macro-enabled listing of all intergers in [0, 4] - */ -#define LIST_5 X(0) X(1) X(2) X(3) X(4) - -/** - * X-macro-enabled listing of all intergers in [0, 7] - */ -#define LIST_8 LIST_5 X(5) X(6) X(7) - -/** - * X-macro-enabled listing of all intergers in [0, 24] - */ -#define LIST_25 LIST_8 X(8) X(9) X(10) X(11) X(12) X(13) X(14) X(15)\ - X(16) X(17) X(18) X(19) X(20) X(21) X(22) X(23) X(24) - - - -#define X(N) (N % 5) * 5 + N / 5, +#define X(N) (N % 5) * 5 + N / 5 /** * The order the lanes should be read when absorbing or squeezing, * it transposes the lanes in the sponge */ -static const long int LANE_TRANSPOSE_MAP[] = { LIST_25 }; +static const long int LANE_TRANSPOSE_MAP[] = { LIST_25(X, COMMA) }; #undef X - /** * Keccak-f round constants */ @@ -83,8 +64,8 @@ libkeccak_f_round(register struct libkeccak_state *state, register int_fast64_t long int w = state->w; /* θ step (step 1 of 3). */ -#define X(N) C[N] = A[N * 5] ^ A[N * 5 + 1] ^ A[N * 5 + 2] ^ A[N * 5 + 3] ^ A[N * 5 + 4]; - LIST_5 +#define X(N) C[N] = A[N * 5] ^ A[N * 5 + 1] ^ A[N * 5 + 2] ^ A[N * 5 + 3] ^ A[N * 5 + 4] + LIST_5(X, ;); #undef X /* θ step (step 2 of 3). */ @@ -104,8 +85,8 @@ libkeccak_f_round(register struct libkeccak_state *state, register int_fast64_t #undef X /* ξ step. */ -#define X(N) A[N] = B[N] ^ ((~(B[(N + 5) % 25])) & B[(N + 10) % 25]); - LIST_25 +#define X(N) A[N] = B[N] ^ ((~(B[(N + 5) % 25])) & B[(N + 10) % 25]) + LIST_25(X, ;); #undef X /* ι step. */ @@ -129,8 +110,8 @@ libkeccak_f_round64(register struct libkeccak_state *state, register int_fast64_ int_fast64_t da, db, dc, dd, de; /* θ step (step 1 of 3). */ -#define X(N) C[N] = A[N * 5] ^ A[N * 5 + 1] ^ A[N * 5 + 2] ^ A[N * 5 + 3] ^ A[N * 5 + 4]; - LIST_5 +#define X(N) C[N] = A[N * 5] ^ A[N * 5 + 1] ^ A[N * 5 + 2] ^ A[N * 5 + 3] ^ A[N * 5 + 4] + LIST_5(X, ;); #undef X /* θ step (step 2 of 3). */ @@ -150,8 +131,8 @@ libkeccak_f_round64(register struct libkeccak_state *state, register int_fast64_ #undef X /* ξ step. */ -#define X(N) A[N] = B[N] ^ ((~(B[(N + 5) % 25])) & B[(N + 10) % 25]); - LIST_25 +#define X(N) A[N] = B[N] ^ ((~(B[(N + 5) % 25])) & B[(N + 10) % 25]) + LIST_25(X, ;); #undef X /* ι step. */ @@ -224,8 +205,8 @@ libkeccak_to_lane64(register const unsigned char *message, register size_t msgle int_fast64_t rc = 0; message += off; #define X(N) if (__builtin_expect(N < n, 1)) rc |= (int_fast64_t)(unsigned char)(message[N]) << (N * 8);\ - else return rc; - LIST_8 + else return rc + LIST_8(X, ;); #undef X return rc; } @@ -284,8 +265,8 @@ libkeccak_absorption_phase(register struct libkeccak_state *restrict state, register long int n = (long)len / rr; if (__builtin_expect(ww >= 8, 1)) { /* ww > 8 is impossible, it is just for optimisation possibilities. */ while (n--) { -#define X(N) state->S[N] ^= libkeccak_to_lane64(message, len, rr, (size_t)(LANE_TRANSPOSE_MAP[N] * 8)); - LIST_25 +#define X(N) state->S[N] ^= libkeccak_to_lane64(message, len, rr, (size_t)(LANE_TRANSPOSE_MAP[N] * 8)) + LIST_25(X, ;); #undef X libkeccak_f(state); message += (size_t)rr; @@ -293,8 +274,8 @@ libkeccak_absorption_phase(register struct libkeccak_state *restrict state, } } else { while (n--) { -#define X(N) state->S[N] ^= libkeccak_to_lane(message, len, rr, ww, (size_t)(LANE_TRANSPOSE_MAP[N] * ww)); - LIST_25 +#define X(N) state->S[N] ^= libkeccak_to_lane(message, len, rr, ww, (size_t)(LANE_TRANSPOSE_MAP[N] * ww)) + LIST_25(X, ;); #undef X libkeccak_f(state); message += (size_t)rr; |