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libblake_blake2s_init.c
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libblake_blake2s_init.c
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/* See LICENSE file for copyright and license details. */
#include "common.h"
#if defined(LITTLE_ENDIAN)
# define le32(X) X
#else
static uint_least32_t
le32(uint_least32_t h)
{
unsigned char r[4];
r[0] = (unsigned char)((h >> 0) & 255);
r[1] = (unsigned char)((h >> 8) & 255);
r[2] = (unsigned char)((h >> 16) & 255);
r[3] = (unsigned char)((h >> 24) & 255);
return *(uint_least32_t *)r;
}
#endif
void
libblake_blake2s_init(struct libblake_blake2s_state *state, const struct libblake_blake2s_params *params)
{
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;
if (CODE_KILLER(offsetof(struct libblake_blake2s_params, inner_len) == 17)) {
#if defined(__clang__)
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wcast-align"
#endif
state->h[0] ^= le32(((const uint_least32_t *)params)[0]);
state->h[1] ^= le32(((const uint_least32_t *)params)[1]);
state->h[2] ^= le32((uint_least32_t)(params->node_offset >> 0));
state->h[3] ^= le32(((uint_least32_t)(params->node_offset >> 32) & UINT_LEAST32_C(0xFFFF)) |
((uint_least32_t)params->node_depth << 16) |
((uint_least32_t)params->inner_len << 24));
state->h[4] ^= le32(*(const uint_least32_t *)¶ms->salt[0]);
state->h[5] ^= le32(*(const uint_least32_t *)¶ms->salt[4]);
state->h[6] ^= le32(*(const uint_least32_t *)¶ms->pepper[0]);
state->h[7] ^= le32(*(const uint_least32_t *)¶ms->pepper[4]);
#if defined(__clang__)
# pragma clang diagnostic pop
#endif
} else {
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] ^= params->leaf_len & UINT_LEAST32_C(0xFFFFffff);
state->h[2] ^= (uint_least32_t)((params->node_offset >> 0) & UINT_LEAST64_C(0xFFFFffff));
state->h[3] ^= (uint_least32_t)((params->node_offset >> 32) & UINT_LEAST64_C(0xFFFF)) << 0;
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;
}
}