1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
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>
AesNI_Aes_Block __fastcall aesni_aes192_encrypt_block_(
AesNI_Aes_Block plaintext,
const AesNI_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]);
}
AesNI_Aes_Block __fastcall aesni_aes192_decrypt_block_(
AesNI_Aes_Block ciphertext,
const AesNI_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 aesni_aes192_expand_key_assist(
AesNI_Aes_Block* prev_lo,
AesNI_Aes_Block* prev_hi,
AesNI_Aes_Block hwgen)
{
AesNI_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 aesni_aes192_expand_key_(
AesNI_Aes_Block key_lo,
AesNI_Aes_Block key_hi,
AesNI_Aes192_RoundKeys* encryption_keys)
{
encryption_keys->keys[0] = key_lo;
encryption_keys->keys[1] = key_hi;
aesni_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));
aesni_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;
aesni_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));
aesni_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;
aesni_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));
aesni_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;
aesni_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));
aesni_aes192_expand_key_assist(&key_lo, &key_hi, _mm_aeskeygenassist_si128(key_hi, 0x80));
encryption_keys->keys[12] = key_lo;
}
void __fastcall aesni_aes192_derive_decryption_keys_(
const AesNI_Aes192_RoundKeys* encryption_keys,
AesNI_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];
}
|
