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small slow-hash optimization

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This commit is contained in:
Javier Smooth
2015-07-25 02:01:39 -07:00
parent bcf69e1481
commit 6ba75feb51
1 changed files with 9 additions and 8 deletions
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src/crypto/slow-hash.c
+9 -8
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@@ -93,20 +93,20 @@
#define pre_aes() \
j = state_index(a,(light?2:1)); \
_c = _mm_load_si128(R128(&hp_state[j])); \
_c = _mm_load_si128(R128(&hp_state_l[j])); \
_a = _mm_load_si128(R128(a)); \
// dga's optimized scratchpad twiddling
#define post_aes() \
_mm_store_si128(R128(c), _c); \
_b = _mm_xor_si128(_b, _c); \
_mm_store_si128(R128(&hp_state[j]), _b); \
_mm_store_si128(R128(&hp_state_l[j]), _b); \
j = state_index(c,(light?2:1)); \
p = U64(&hp_state[j]); \
p = U64(&hp_state_l[j]); \
b[0] = p[0]; b[1] = p[1]; \
__mul(); \
a[0] += hi; a[1] += lo; \
p = U64(&hp_state[j]); \
p = U64(&hp_state_l[j]); \
p[0] = a[0]; p[1] = a[1]; \
a[0] ^= b[0]; a[1] ^= b[1]; \
_b = _c; \
@@ -392,6 +392,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int light)
// this isn't supposed to happen, but guard against it for now.
if(hp_state == NULL)
slow_hash_allocate_state();
uint8_t *hp_state_l = hp_state;
hash_process(&state.hs, data, length);
memcpy(text, state.init, INIT_SIZE_BYTE);
@@ -402,7 +403,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int light)
for(i = 0; i < MEMORY / (light?2:1) / INIT_SIZE_BYTE; i++)
{
aes_pseudo_round(text, text, expandedKey, INIT_SIZE_BLK);
memcpy(&hp_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE);
memcpy(&hp_state_l[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE);
}
}
else
@@ -414,7 +415,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int light)
for(j = 0; j < INIT_SIZE_BLK; j++)
aesb_pseudo_round(&text[AES_BLOCK_SIZE * j], &text[AES_BLOCK_SIZE * j], aes_ctx->key->exp_data);
memcpy(&hp_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE);
memcpy(&hp_state_l[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE);
}
}
@@ -452,7 +453,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int light)
for(i = 0; i < MEMORY / (light?2:1) / INIT_SIZE_BYTE; i++)
{
// add the xor to the pseudo round
aes_pseudo_round_xor(text, text, expandedKey, &hp_state[i * INIT_SIZE_BYTE], INIT_SIZE_BLK);
aes_pseudo_round_xor(text, text, expandedKey, &hp_state_l[i * INIT_SIZE_BYTE], INIT_SIZE_BLK);
}
}
else
@@ -462,7 +463,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int light)
{
for(j = 0; j < INIT_SIZE_BLK; j++)
{
xor_blocks(&text[j * AES_BLOCK_SIZE], &hp_state[i * INIT_SIZE_BYTE + j * AES_BLOCK_SIZE]);
xor_blocks(&text[j * AES_BLOCK_SIZE], &hp_state_l[i * INIT_SIZE_BYTE + j * AES_BLOCK_SIZE]);
aesb_pseudo_round(&text[AES_BLOCK_SIZE * j], &text[AES_BLOCK_SIZE * j], aes_ctx->key->exp_data);
}
}