diff options
Diffstat (limited to 'aes/src/c/aes192.c')
| -rw-r--r-- | aes/src/c/aes192.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/aes/src/c/aes192.c b/aes/src/c/aes192.c new file mode 100644 index 0000000..d661b78 --- /dev/null +++ b/aes/src/c/aes192.c @@ -0,0 +1,133 @@ +/* + * Copyright (c) 2015 Egor Tensin <Egor.Tensin@gmail.com> + * This file is part of the "AES tools" project. + * For details, see https://github.com/egor-tensin/aes-tools. + * Distributed under the MIT License. + */ + +#include <aes/all.h> + +#include <emmintrin.h> +#include <wmmintrin.h> + +AES_AES_Block __fastcall aes_AES192_encrypt_block_( + AES_AES_Block plaintext, + const AES_AES192_RoundKeys* encryption_keys) +{ + plaintext = _mm_xor_si128(plaintext, encryption_keys->keys[0]); + plaintext = _mm_aesenc_si128(plaintext, encryption_keys->keys[1]); + plaintext = _mm_aesenc_si128(plaintext, encryption_keys->keys[2]); + plaintext = _mm_aesenc_si128(plaintext, encryption_keys->keys[3]); + plaintext = _mm_aesenc_si128(plaintext, encryption_keys->keys[4]); + plaintext = _mm_aesenc_si128(plaintext, encryption_keys->keys[5]); + plaintext = _mm_aesenc_si128(plaintext, encryption_keys->keys[6]); + plaintext = _mm_aesenc_si128(plaintext, encryption_keys->keys[7]); + plaintext = _mm_aesenc_si128(plaintext, encryption_keys->keys[8]); + plaintext = _mm_aesenc_si128(plaintext, encryption_keys->keys[9]); + plaintext = _mm_aesenc_si128(plaintext, encryption_keys->keys[10]); + plaintext = _mm_aesenc_si128(plaintext, encryption_keys->keys[11]); + return _mm_aesenclast_si128(plaintext, encryption_keys->keys[12]); +} + +AES_AES_Block __fastcall aes_AES192_decrypt_block_( + AES_AES_Block ciphertext, + const AES_AES192_RoundKeys* decryption_keys) +{ + ciphertext = _mm_xor_si128(ciphertext, decryption_keys->keys[0]); + ciphertext = _mm_aesdec_si128(ciphertext, decryption_keys->keys[1]); + ciphertext = _mm_aesdec_si128(ciphertext, decryption_keys->keys[2]); + ciphertext = _mm_aesdec_si128(ciphertext, decryption_keys->keys[3]); + ciphertext = _mm_aesdec_si128(ciphertext, decryption_keys->keys[4]); + ciphertext = _mm_aesdec_si128(ciphertext, decryption_keys->keys[5]); + ciphertext = _mm_aesdec_si128(ciphertext, decryption_keys->keys[6]); + ciphertext = _mm_aesdec_si128(ciphertext, decryption_keys->keys[7]); + ciphertext = _mm_aesdec_si128(ciphertext, decryption_keys->keys[8]); + ciphertext = _mm_aesdec_si128(ciphertext, decryption_keys->keys[9]); + ciphertext = _mm_aesdec_si128(ciphertext, decryption_keys->keys[10]); + ciphertext = _mm_aesdec_si128(ciphertext, decryption_keys->keys[11]); + return _mm_aesdeclast_si128(ciphertext, decryption_keys->keys[12]); +} + +static void __fastcall aes_aes192_expand_key_assist( + AES_AES_Block* prev_lo, + AES_AES_Block* prev_hi, + AES_AES_Block hwgen) +{ + AES_AES_Block 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 aes_AES192_expand_key_( + AES_AES_Block key_lo, + AES_AES_Block key_hi, + AES_AES192_RoundKeys* encryption_keys) +{ + encryption_keys->keys[0] = key_lo; + encryption_keys->keys[1] = key_hi; + + aes_aes192_expand_key_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x01)); + encryption_keys->keys[1] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(encryption_keys->keys[1]), _mm_castsi128_pd(key_lo), 0)); + encryption_keys->keys[2] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_lo), _mm_castsi128_pd(key_hi), 1)); + + aes_aes192_expand_key_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x02)); + encryption_keys->keys[3] = key_lo; + encryption_keys->keys[4] = key_hi; + + aes_aes192_expand_key_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x04)); + encryption_keys->keys[4] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(encryption_keys->keys[4]), _mm_castsi128_pd(key_lo), 0)); + encryption_keys->keys[5] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_lo), _mm_castsi128_pd(key_hi), 1)); + + aes_aes192_expand_key_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x08)); + encryption_keys->keys[6] = key_lo; + encryption_keys->keys[7] = key_hi; + + aes_aes192_expand_key_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x10)); + encryption_keys->keys[7] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(encryption_keys->keys[7]), _mm_castsi128_pd(key_lo), 0)); + encryption_keys->keys[8] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_lo), _mm_castsi128_pd(key_hi), 1)); + + aes_aes192_expand_key_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x20)); + encryption_keys->keys[9] = key_lo; + encryption_keys->keys[10] = key_hi; + + aes_aes192_expand_key_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x40)); + encryption_keys->keys[10] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(encryption_keys->keys[10]), _mm_castsi128_pd(key_lo), 0)); + encryption_keys->keys[11] = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(key_lo), _mm_castsi128_pd(key_hi), 1)); + + aes_aes192_expand_key_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x80)); + encryption_keys->keys[12] = key_lo; +} + +void __fastcall aes_AES192_derive_decryption_keys_( + const AES_AES192_RoundKeys* encryption_keys, + AES_AES192_RoundKeys* decryption_keys) +{ + decryption_keys->keys[0] = encryption_keys->keys[12]; + decryption_keys->keys[1] = _mm_aesimc_si128(encryption_keys->keys[11]); + decryption_keys->keys[2] = _mm_aesimc_si128(encryption_keys->keys[10]); + decryption_keys->keys[3] = _mm_aesimc_si128(encryption_keys->keys[9]); + decryption_keys->keys[4] = _mm_aesimc_si128(encryption_keys->keys[8]); + decryption_keys->keys[5] = _mm_aesimc_si128(encryption_keys->keys[7]); + decryption_keys->keys[6] = _mm_aesimc_si128(encryption_keys->keys[6]); + decryption_keys->keys[7] = _mm_aesimc_si128(encryption_keys->keys[5]); + decryption_keys->keys[8] = _mm_aesimc_si128(encryption_keys->keys[4]); + decryption_keys->keys[9] = _mm_aesimc_si128(encryption_keys->keys[3]); + decryption_keys->keys[10] = _mm_aesimc_si128(encryption_keys->keys[2]); + decryption_keys->keys[11] = _mm_aesimc_si128(encryption_keys->keys[1]); + decryption_keys->keys[12] = encryption_keys->keys[0]; +} |