diff options
Diffstat (limited to 'src/block')
| -rw-r--r-- | src/block/aes_intel/aes_intel.cpp | 42 |
1 files changed, 18 insertions, 24 deletions
diff --git a/src/block/aes_intel/aes_intel.cpp b/src/block/aes_intel/aes_intel.cpp index 0dc44de9a..057728e72 100644 --- a/src/block/aes_intel/aes_intel.cpp +++ b/src/block/aes_intel/aes_intel.cpp @@ -14,17 +14,11 @@ namespace { __m128i aes_128_key_expansion(__m128i key, __m128i key_with_rcon) { - key_with_rcon = _mm_shuffle_epi32(key_with_rcon, 0xff); - - __m128i T = _mm_slli_si128 (key, 0x4); - key = _mm_xor_si128 (key, T); - T = _mm_slli_si128 (T, 0x4); - key = _mm_xor_si128 (key, T); - T = _mm_slli_si128 (T, 0x4); - - key = _mm_xor_si128 (key, T); - key = _mm_xor_si128 (key, key_with_rcon); - return key; + key_with_rcon = _mm_shuffle_epi32(key_with_rcon, _MM_SHUFFLE(3,3,3,3)); + key = _mm_xor_si128(key, _mm_slli_si128(key, 4)); + key = _mm_xor_si128(key, _mm_slli_si128(key, 4)); + key = _mm_xor_si128(key, _mm_slli_si128(key, 4)); + return _mm_xor_si128(key, key_with_rcon); } } @@ -124,23 +118,23 @@ void AES_128_Intel::decrypt_n(const byte in[], byte out[], u32bit blocks) const /** * AES Key Schedule */ -void AES_128_Intel::key_schedule(const byte key[], u32bit) +void AES_128_Intel::key_schedule(const byte key[], u32bit length) { -#define AES_128_key_exp_with_rcon(K, RCON) \ - aes_128_key_expansion(K, _mm_aeskeygenassist_si128(K, RCON)); + #define AES_128_key_exp(K, RCON) \ + aes_128_key_expansion(K, _mm_aeskeygenassist_si128(K, RCON)) __m128i K0 = _mm_loadu_si128((const __m128i*)key); - __m128i K1 = AES_128_key_exp_with_rcon(K0, 0x01); - __m128i K2 = AES_128_key_exp_with_rcon(K1, 0x02); - __m128i K3 = AES_128_key_exp_with_rcon(K2, 0x04); - __m128i K4 = AES_128_key_exp_with_rcon(K3, 0x08); - __m128i K5 = AES_128_key_exp_with_rcon(K4, 0x10); - __m128i K6 = AES_128_key_exp_with_rcon(K5, 0x20); - __m128i K7 = AES_128_key_exp_with_rcon(K6, 0x40); - __m128i K8 = AES_128_key_exp_with_rcon(K7, 0x80); - __m128i K9 = AES_128_key_exp_with_rcon(K8, 0x1B); - __m128i K10 = AES_128_key_exp_with_rcon(K9, 0x36); + __m128i K1 = AES_128_key_exp(K0, 0x01); + __m128i K2 = AES_128_key_exp(K1, 0x02); + __m128i K3 = AES_128_key_exp(K2, 0x04); + __m128i K4 = AES_128_key_exp(K3, 0x08); + __m128i K5 = AES_128_key_exp(K4, 0x10); + __m128i K6 = AES_128_key_exp(K5, 0x20); + __m128i K7 = AES_128_key_exp(K6, 0x40); + __m128i K8 = AES_128_key_exp(K7, 0x80); + __m128i K9 = AES_128_key_exp(K8, 0x1B); + __m128i K10 = AES_128_key_exp(K9, 0x36); __m128i* EK_mm = (__m128i*)&EK[0]; _mm_storeu_si128(EK_mm , K0); |