diff options
Diffstat (limited to 'src/c/aes192.c')
| -rw-r--r-- | src/c/aes192.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/src/c/aes192.c b/src/c/aes192.c new file mode 100644 index 0000000..fec8f06 --- /dev/null +++ b/src/c/aes192.c @@ -0,0 +1,134 @@ +/** + * \file + * \author Egor Tensin <Egor.Tensin@gmail.com> + * \date 2015 + * \copyright This file is licensed under the terms of the MIT License. + * See LICENSE.txt for details. + */ + +#include <aesni/all.h> + +#include <emmintrin.h> +#include <wmmintrin.h> + +AesBlock128 __fastcall raw_aes192_encrypt_block( + AesBlock128 plain, + Aes192KeySchedule* key_schedule) +{ + plain = _mm_xor_si128(plain, key_schedule->keys[0]); + plain = _mm_aesenc_si128(plain, key_schedule->keys[1]); + plain = _mm_aesenc_si128(plain, key_schedule->keys[2]); + plain = _mm_aesenc_si128(plain, key_schedule->keys[3]); + plain = _mm_aesenc_si128(plain, key_schedule->keys[4]); + plain = _mm_aesenc_si128(plain, key_schedule->keys[5]); + plain = _mm_aesenc_si128(plain, key_schedule->keys[6]); + plain = _mm_aesenc_si128(plain, key_schedule->keys[7]); + plain = _mm_aesenc_si128(plain, key_schedule->keys[8]); + plain = _mm_aesenc_si128(plain, key_schedule->keys[9]); + plain = _mm_aesenc_si128(plain, key_schedule->keys[10]); + plain = _mm_aesenc_si128(plain, key_schedule->keys[11]); + return _mm_aesenclast_si128(plain, key_schedule->keys[12]); +} + +AesBlock128 __fastcall raw_aes192_decrypt_block( + AesBlock128 cipher, + Aes192KeySchedule* inverted_schedule) +{ + cipher = _mm_xor_si128(cipher, inverted_schedule->keys[0]); + cipher = _mm_aesdec_si128(cipher, inverted_schedule->keys[1]); + cipher = _mm_aesdec_si128(cipher, inverted_schedule->keys[2]); + cipher = _mm_aesdec_si128(cipher, inverted_schedule->keys[3]); + cipher = _mm_aesdec_si128(cipher, inverted_schedule->keys[4]); + cipher = _mm_aesdec_si128(cipher, inverted_schedule->keys[5]); + cipher = _mm_aesdec_si128(cipher, inverted_schedule->keys[6]); + cipher = _mm_aesdec_si128(cipher, inverted_schedule->keys[7]); + cipher = _mm_aesdec_si128(cipher, inverted_schedule->keys[8]); + cipher = _mm_aesdec_si128(cipher, inverted_schedule->keys[9]); + cipher = _mm_aesdec_si128(cipher, inverted_schedule->keys[10]); + cipher = _mm_aesdec_si128(cipher, inverted_schedule->keys[11]); + return _mm_aesdeclast_si128(cipher, inverted_schedule->keys[12]); +} + +static void __fastcall aes192_keygen_assist( + AesBlock128* prev_lo, + AesBlock128* prev_hi, + AesBlock128 hwgen) +{ + AesBlock128 tmp = *prev_lo; + + tmp = _mm_slli_si128(tmp, 4); + *prev_lo = _mm_xor_si128(*prev_lo, tmp); + tmp = _mm_slli_si128(tmp, 4); + *prev_lo = _mm_xor_si128(*prev_lo, tmp); + tmp = _mm_slli_si128(tmp, 4); + *prev_lo = _mm_xor_si128(*prev_lo, tmp); + + hwgen = _mm_shuffle_epi32(hwgen, 0x55); + *prev_lo = _mm_xor_si128(*prev_lo, hwgen); + + tmp = _mm_shuffle_epi32(*prev_hi, 0xf3); + *prev_hi = _mm_xor_si128(*prev_hi, tmp); + + tmp = _mm_shuffle_epi32(*prev_lo, 0xff); + tmp = _mm_srli_si128(tmp, 8); + *prev_hi = _mm_xor_si128(*prev_hi, tmp); +} + +void __fastcall raw_aes192_expand_key_schedule( + AesBlock128 key_lo, + AesBlock128 key_hi, + Aes192KeySchedule* key_schedule) +{ + key_schedule->keys[0] = key_lo; + key_schedule->keys[1] = key_hi; + + aes192_keygen_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x01)); + key_schedule->keys[1] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_schedule->keys[1]), _mm_castsi128_pd(key_lo), 0)); + key_schedule->keys[2] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_lo), _mm_castsi128_pd(key_hi), 1)); + + aes192_keygen_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x02)); + key_schedule->keys[3] = key_lo; + key_schedule->keys[4] = key_hi; + + aes192_keygen_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x04)); + key_schedule->keys[4] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_schedule->keys[4]), _mm_castsi128_pd(key_lo), 0)); + key_schedule->keys[5] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_lo), _mm_castsi128_pd(key_hi), 1)); + + aes192_keygen_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x08)); + key_schedule->keys[6] = key_lo; + key_schedule->keys[7] = key_hi; + + aes192_keygen_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x10)); + key_schedule->keys[7] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_schedule->keys[7]), _mm_castsi128_pd(key_lo), 0)); + key_schedule->keys[8] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_lo), _mm_castsi128_pd(key_hi), 1)); + + aes192_keygen_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x20)); + key_schedule->keys[9] = key_lo; + key_schedule->keys[10] = key_hi; + + aes192_keygen_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x40)); + key_schedule->keys[10] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_schedule->keys[10]), _mm_castsi128_pd(key_lo), 0)); + key_schedule->keys[11] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_lo), _mm_castsi128_pd(key_hi), 1)); + + aes192_keygen_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x80)); + key_schedule->keys[12] = key_lo; +} + +void __fastcall raw_aes192_invert_key_schedule( + Aes192KeySchedule* key_schedule, + Aes192KeySchedule* inverted_schedule) +{ + inverted_schedule->keys[0] = key_schedule->keys[12]; + inverted_schedule->keys[1] = _mm_aesimc_si128(key_schedule->keys[11]); + inverted_schedule->keys[2] = _mm_aesimc_si128(key_schedule->keys[10]); + inverted_schedule->keys[3] = _mm_aesimc_si128(key_schedule->keys[9]); + inverted_schedule->keys[4] = _mm_aesimc_si128(key_schedule->keys[8]); + inverted_schedule->keys[5] = _mm_aesimc_si128(key_schedule->keys[7]); + inverted_schedule->keys[6] = _mm_aesimc_si128(key_schedule->keys[6]); + inverted_schedule->keys[7] = _mm_aesimc_si128(key_schedule->keys[5]); + inverted_schedule->keys[8] = _mm_aesimc_si128(key_schedule->keys[4]); + inverted_schedule->keys[9] = _mm_aesimc_si128(key_schedule->keys[3]); + inverted_schedule->keys[10] = _mm_aesimc_si128(key_schedule->keys[2]); + inverted_schedule->keys[11] = _mm_aesimc_si128(key_schedule->keys[1]); + inverted_schedule->keys[12] = key_schedule->keys[0]; +} |