diff options
Diffstat (limited to 'process.c')
| -rw-r--r-- | process.c | 69 |
1 files changed, 36 insertions, 33 deletions
@@ -6,37 +6,40 @@ * Unified implementation (what can unified without performance impact) * of the chunk processing for all SHA-2 functions * - * @param chunk The data to process - * @param A Wordsize-dependent constant, take a look at the code - * @param B Wordsize-dependent constant, take a look at the code - * @param C Wordsize-dependent constant, take a look at the code - * @param D Wordsize-dependent constant, take a look at the code - * @param E Wordsize-dependent constant, take a look at the code - * @param F Wordsize-dependent constant, take a look at the code - * @param G Wordsize-dependent constant, take a look at the code - * @param H Wordsize-dependent constant, take a look at the code - * @param I Wordsize-dependent constant, take a look at the code - * @param J Wordsize-dependent constant, take a look at the code - * @param K Wordsize-dependent constant, take a look at the code - * @param L Wordsize-dependent constant, take a look at the code - * @param WORD_T `__typeof()` on any wordsize-dependent variable, with exact size - * @param k Round constants - * @param w Words - * @param h Hash values - * @param work_h Space for temporary hash values + * @param chunk The data to process + * @param A Wordsize-dependent constant, take a look at the code + * @param B Wordsize-dependent constant, take a look at the code + * @param C Wordsize-dependent constant, take a look at the code + * @param D Wordsize-dependent constant, take a look at the code + * @param E Wordsize-dependent constant, take a look at the code + * @param F Wordsize-dependent constant, take a look at the code + * @param G Wordsize-dependent constant, take a look at the code + * @param H Wordsize-dependent constant, take a look at the code + * @param I Wordsize-dependent constant, take a look at the code + * @param J Wordsize-dependent constant, take a look at the code + * @param K Wordsize-dependent constant, take a look at the code + * @param L Wordsize-dependent constant, take a look at the code + * @param WORD_T `__typeof()` on any wordsize-dependent variable + * @param WORD_SIZE 4 for 32-bit algorithms and 8 for 64-bit algorithms + * @param TRUNC `TRUNC32` for 32-bit algorithms and `TRUNC64` for 64-bit algorithms + * @param k Round constants + * @param w Words + * @param h Hash values + * @param work_h Space for temporary hash values */ -#define SHA2_IMPLEMENTATION(chunk, A, B, C, D, E, F, G, H, I, J, K, L, WORD_T, k, w, h, work_h)\ +#define SHA2_IMPLEMENTATION(chunk, A, B, C, D, E, F, G, H, I, J, K, L, WORD_T, WORD_SIZE, TRUNC, k, w, h, work_h) \ memcpy(work_h, h, sizeof(work_h));\ \ memset(w, 0, 16 * sizeof(*(w)));\ for (i = 0; i < 16; i++)\ - for (j = 0; j < sizeof(WORD_T); j++)\ - w[i] |= ((WORD_T)(chunk[(i + 1) * sizeof(WORD_T) - j - 1])) << (j << 3);\ + for (j = 0; j < WORD_SIZE; j++)\ + w[i] |= ((WORD_T)(chunk[(i + 1) * WORD_SIZE - j - 1])) << (j << 3);\ \ for (i = 16; i < sizeof(k) / sizeof(*(k)); i++) {\ w[i] = w[i - 16] + w[i - 7];\ w[i] += ROTR(w[i - 15], A) ^ ROTR(w[i - 15], B) ^ (w[i - 15] >> (C));\ w[i] += ROTR(w[i - 2], D) ^ ROTR(w[i - 2], E) ^ (w[i - 2] >> (F));\ + w[i] = TRUNC(w[i]);\ }\ \ for (i = 0; i < sizeof(k) / sizeof(*(k)); i++) {\ @@ -46,30 +49,30 @@ s1 += ROTR(work_h[4], G) ^ ROTR(work_h[4], H) ^ ROTR(work_h[4], I);\ s0 += ROTR(work_h[0], J) ^ ROTR(work_h[0], K) ^ ROTR(work_h[0], L);\ \ - memmove(work_h + 1, work_h, 7 * sizeof(*(work_h)));\ - work_h[4] += s1;\ - work_h[0] = s1 + s0;\ + memmove(&work_h[1], work_h, 7 * sizeof(*(work_h)));\ + work_h[4] = TRUNC(work_h[4] + s1);\ + work_h[0] = TRUNC(s1 + s0);\ }\ \ for (i = 0; i < 8; i++)\ - h[i] += work_h[i] + h[i] = TRUNC(h[i] + work_h[i]); void libsha2_process(struct libsha2_state *restrict state, const unsigned char *restrict chunk) { if (state->algorithm <= LIBSHA2_256) { - uint32_t s0, s1; + uint_least32_t s0, s1; size_t i, j; #if defined(__GNUC__) # pragma GCC diagnostic push # pragma GCC diagnostic ignored "-Wmemset-elt-size" #endif -#define ROTR(X, N) (((X) >> (N)) | ((X) << ((sizeof(uint32_t) * 8) - (N)))) +#define ROTR(X, N) TRUNC32(((X) >> (N)) | ((X) << (32 - (N)))) - SHA2_IMPLEMENTATION(chunk, 7, 18, 3, 17, 19, 10, 6, 11, 25, 2, 13, 22, uint32_t, - state->k.b32, state->w.b32, state->h.b32, state->work_h.b32); + SHA2_IMPLEMENTATION(chunk, 7, 18, 3, 17, 19, 10, 6, 11, 25, 2, 13, 22, uint_least32_t, + 4, TRUNC32, state->k.b32, state->w.b32, state->h.b32, state->work_h.b32); #undef ROTR #if defined(__GNUC__) @@ -77,13 +80,13 @@ libsha2_process(struct libsha2_state *restrict state, const unsigned char *restr #endif } else { - uint64_t s0, s1; + uint_least64_t s0, s1; size_t i, j; -#define ROTR(X, N) (((X) >> (N)) | ((X) << ((sizeof(uint64_t) * 8) - (N)))) +#define ROTR(X, N) TRUNC64(((X) >> (N)) | ((X) << (64 - (N)))) - SHA2_IMPLEMENTATION(chunk, 1, 8, 7, 19, 61, 6, 14, 18, 41, 28, 34, 39, uint64_t, - state->k.b64, state->w.b64, state->h.b64, state->work_h.b64); + SHA2_IMPLEMENTATION(chunk, 1, 8, 7, 19, 61, 6, 14, 18, 41, 28, 34, 39, uint_least64_t, + 8, TRUNC64, state->k.b64, state->w.b64, state->h.b64, state->work_h.b64); #undef ROTR } |