diff options
Diffstat (limited to '')
| -rw-r--r-- | libblake_blake2s_init.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/libblake_blake2s_init.c b/libblake_blake2s_init.c new file mode 100644 index 0000000..d33ce5c --- /dev/null +++ b/libblake_blake2s_init.c @@ -0,0 +1,58 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + +void +libblake_blake2s_init(struct libblake_blake2s_state *state, const struct libblake_blake2s_params *params, const unsigned char *key) +{ + state->h[0] = UINT_LEAST32_C(0x6A09E667); + state->h[1] = UINT_LEAST32_C(0xBB67AE85); + state->h[2] = UINT_LEAST32_C(0x3C6EF372); + state->h[3] = UINT_LEAST32_C(0xA54FF53A); + state->h[4] = UINT_LEAST32_C(0x510E527F); + state->h[5] = UINT_LEAST32_C(0x9B05688C); + state->h[6] = UINT_LEAST32_C(0x1F83D9AB); + state->h[7] = UINT_LEAST32_C(0x5BE0CD19); + + state->t[0] = 0; + state->t[1] = 0; + state->f[0] = 0; + state->f[1] = 0; + + state->h[0] ^= ((uint_least32_t)params->digest_len & 255) << 0; + state->h[0] ^= ((uint_least32_t)params->key_len & 255) << 8; + state->h[0] ^= ((uint_least32_t)params->fanout & 255) << 16; + state->h[0] ^= ((uint_least32_t)params->depth & 255) << 24; + state->h[1] ^= ((uint_least32_t)(params->leaf_len >> 0) & 255) << 0; + state->h[1] ^= ((uint_least32_t)(params->leaf_len >> 8) & 255) << 8; + state->h[1] ^= ((uint_least32_t)(params->leaf_len >> 16) & 255) << 16; + state->h[1] ^= ((uint_least32_t)(params->leaf_len >> 24) & 255) << 24; + state->h[2] ^= ((uint_least32_t)(params->node_offset >> 0) & 255) << 0; + state->h[2] ^= ((uint_least32_t)(params->node_offset >> 8) & 255) << 8; + state->h[2] ^= ((uint_least32_t)(params->node_offset >> 16) & 255) << 16; + state->h[2] ^= ((uint_least32_t)(params->node_offset >> 24) & 255) << 24; + state->h[3] ^= ((uint_least32_t)(params->xof_len >> 0) & 255) << 0; + state->h[3] ^= ((uint_least32_t)(params->xof_len >> 8) & 255) << 8; + state->h[3] ^= ((uint_least32_t)params->node_depth & 255) << 16; + state->h[3] ^= ((uint_least32_t)params->inner_len & 255) << 24; + state->h[4] ^= ((uint_least32_t)params->salt[0] & 255) << 0; + state->h[4] ^= ((uint_least32_t)params->salt[1] & 255) << 8; + state->h[4] ^= ((uint_least32_t)params->salt[2] & 255) << 16; + state->h[4] ^= ((uint_least32_t)params->salt[3] & 255) << 24; + state->h[5] ^= ((uint_least32_t)params->salt[4] & 255) << 0; + state->h[5] ^= ((uint_least32_t)params->salt[5] & 255) << 8; + state->h[5] ^= ((uint_least32_t)params->salt[6] & 255) << 16; + state->h[5] ^= ((uint_least32_t)params->salt[7] & 255) << 24; + state->h[6] ^= ((uint_least32_t)params->pepper[0] & 255) << 0; + state->h[6] ^= ((uint_least32_t)params->pepper[1] & 255) << 8; + state->h[6] ^= ((uint_least32_t)params->pepper[2] & 255) << 16; + state->h[6] ^= ((uint_least32_t)params->pepper[3] & 255) << 24; + state->h[7] ^= ((uint_least32_t)params->pepper[4] & 255) << 0; + state->h[7] ^= ((uint_least32_t)params->pepper[5] & 255) << 8; + state->h[7] ^= ((uint_least32_t)params->pepper[6] & 255) << 16; + state->h[7] ^= ((uint_least32_t)params->pepper[7] & 255) << 24; + + if (params->key_len) { + state->t[0] = 32; + libblake_internal_blake2s_compress(state, key); + } +} |