2 * Copyright (c) 2017 Thomas Pornin <pornin@bolet.org>
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 #include <wmmintrin.h>
37 /* see bearssl_block.h */
39 br_aes_x86ni_cbcdec_init(br_aes_x86ni_cbcdec_keys
*ctx
,
40 const void *key
, size_t len
)
42 ctx
->vtable
= &br_aes_x86ni_cbcdec_vtable
;
43 ctx
->num_rounds
= br_aes_x86ni_keysched_dec(ctx
->skey
.skni
, key
, len
);
46 /* see bearssl_block.h */
49 br_aes_x86ni_cbcdec_run(const br_aes_x86ni_cbcdec_keys
*ctx
,
50 void *iv
, void *data
, size_t len
)
58 ivx
= _mm_loadu_si128(iv
);
59 num_rounds
= ctx
->num_rounds
;
60 for (u
= 0; u
<= num_rounds
; u
++) {
61 sk
[u
] = _mm_loadu_si128((void *)(ctx
->skey
.skni
+ (u
<< 4)));
64 __m128i x0
, x1
, x2
, x3
, e0
, e1
, e2
, e3
;
66 x0
= _mm_loadu_si128((void *)(buf
+ 0));
68 x1
= _mm_loadu_si128((void *)(buf
+ 16));
69 x2
= _mm_loadu_si128((void *)(buf
+ 32));
70 x3
= _mm_loadu_si128((void *)(buf
+ 48));
72 x0
= _mm_loadu_si128((void *)(buf
+ 0));
74 x1
= _mm_loadu_si128((void *)(buf
+ 16));
91 x0
= _mm_xor_si128(x0
, sk
[0]);
92 x1
= _mm_xor_si128(x1
, sk
[0]);
93 x2
= _mm_xor_si128(x2
, sk
[0]);
94 x3
= _mm_xor_si128(x3
, sk
[0]);
95 x0
= _mm_aesdec_si128(x0
, sk
[1]);
96 x1
= _mm_aesdec_si128(x1
, sk
[1]);
97 x2
= _mm_aesdec_si128(x2
, sk
[1]);
98 x3
= _mm_aesdec_si128(x3
, sk
[1]);
99 x0
= _mm_aesdec_si128(x0
, sk
[2]);
100 x1
= _mm_aesdec_si128(x1
, sk
[2]);
101 x2
= _mm_aesdec_si128(x2
, sk
[2]);
102 x3
= _mm_aesdec_si128(x3
, sk
[2]);
103 x0
= _mm_aesdec_si128(x0
, sk
[3]);
104 x1
= _mm_aesdec_si128(x1
, sk
[3]);
105 x2
= _mm_aesdec_si128(x2
, sk
[3]);
106 x3
= _mm_aesdec_si128(x3
, sk
[3]);
107 x0
= _mm_aesdec_si128(x0
, sk
[4]);
108 x1
= _mm_aesdec_si128(x1
, sk
[4]);
109 x2
= _mm_aesdec_si128(x2
, sk
[4]);
110 x3
= _mm_aesdec_si128(x3
, sk
[4]);
111 x0
= _mm_aesdec_si128(x0
, sk
[5]);
112 x1
= _mm_aesdec_si128(x1
, sk
[5]);
113 x2
= _mm_aesdec_si128(x2
, sk
[5]);
114 x3
= _mm_aesdec_si128(x3
, sk
[5]);
115 x0
= _mm_aesdec_si128(x0
, sk
[6]);
116 x1
= _mm_aesdec_si128(x1
, sk
[6]);
117 x2
= _mm_aesdec_si128(x2
, sk
[6]);
118 x3
= _mm_aesdec_si128(x3
, sk
[6]);
119 x0
= _mm_aesdec_si128(x0
, sk
[7]);
120 x1
= _mm_aesdec_si128(x1
, sk
[7]);
121 x2
= _mm_aesdec_si128(x2
, sk
[7]);
122 x3
= _mm_aesdec_si128(x3
, sk
[7]);
123 x0
= _mm_aesdec_si128(x0
, sk
[8]);
124 x1
= _mm_aesdec_si128(x1
, sk
[8]);
125 x2
= _mm_aesdec_si128(x2
, sk
[8]);
126 x3
= _mm_aesdec_si128(x3
, sk
[8]);
127 x0
= _mm_aesdec_si128(x0
, sk
[9]);
128 x1
= _mm_aesdec_si128(x1
, sk
[9]);
129 x2
= _mm_aesdec_si128(x2
, sk
[9]);
130 x3
= _mm_aesdec_si128(x3
, sk
[9]);
131 if (num_rounds
== 10) {
132 x0
= _mm_aesdeclast_si128(x0
, sk
[10]);
133 x1
= _mm_aesdeclast_si128(x1
, sk
[10]);
134 x2
= _mm_aesdeclast_si128(x2
, sk
[10]);
135 x3
= _mm_aesdeclast_si128(x3
, sk
[10]);
136 } else if (num_rounds
== 12) {
137 x0
= _mm_aesdec_si128(x0
, sk
[10]);
138 x1
= _mm_aesdec_si128(x1
, sk
[10]);
139 x2
= _mm_aesdec_si128(x2
, sk
[10]);
140 x3
= _mm_aesdec_si128(x3
, sk
[10]);
141 x0
= _mm_aesdec_si128(x0
, sk
[11]);
142 x1
= _mm_aesdec_si128(x1
, sk
[11]);
143 x2
= _mm_aesdec_si128(x2
, sk
[11]);
144 x3
= _mm_aesdec_si128(x3
, sk
[11]);
145 x0
= _mm_aesdeclast_si128(x0
, sk
[12]);
146 x1
= _mm_aesdeclast_si128(x1
, sk
[12]);
147 x2
= _mm_aesdeclast_si128(x2
, sk
[12]);
148 x3
= _mm_aesdeclast_si128(x3
, sk
[12]);
150 x0
= _mm_aesdec_si128(x0
, sk
[10]);
151 x1
= _mm_aesdec_si128(x1
, sk
[10]);
152 x2
= _mm_aesdec_si128(x2
, sk
[10]);
153 x3
= _mm_aesdec_si128(x3
, sk
[10]);
154 x0
= _mm_aesdec_si128(x0
, sk
[11]);
155 x1
= _mm_aesdec_si128(x1
, sk
[11]);
156 x2
= _mm_aesdec_si128(x2
, sk
[11]);
157 x3
= _mm_aesdec_si128(x3
, sk
[11]);
158 x0
= _mm_aesdec_si128(x0
, sk
[12]);
159 x1
= _mm_aesdec_si128(x1
, sk
[12]);
160 x2
= _mm_aesdec_si128(x2
, sk
[12]);
161 x3
= _mm_aesdec_si128(x3
, sk
[12]);
162 x0
= _mm_aesdec_si128(x0
, sk
[13]);
163 x1
= _mm_aesdec_si128(x1
, sk
[13]);
164 x2
= _mm_aesdec_si128(x2
, sk
[13]);
165 x3
= _mm_aesdec_si128(x3
, sk
[13]);
166 x0
= _mm_aesdeclast_si128(x0
, sk
[14]);
167 x1
= _mm_aesdeclast_si128(x1
, sk
[14]);
168 x2
= _mm_aesdeclast_si128(x2
, sk
[14]);
169 x3
= _mm_aesdeclast_si128(x3
, sk
[14]);
171 x0
= _mm_xor_si128(x0
, ivx
);
172 x1
= _mm_xor_si128(x1
, e0
);
173 x2
= _mm_xor_si128(x2
, e1
);
174 x3
= _mm_xor_si128(x3
, e2
);
176 _mm_storeu_si128((void *)(buf
+ 0), x0
);
178 _mm_storeu_si128((void *)(buf
+ 16), x1
);
179 _mm_storeu_si128((void *)(buf
+ 32), x2
);
180 _mm_storeu_si128((void *)(buf
+ 48), x3
);
185 _mm_storeu_si128((void *)(buf
+ 16), x1
);
188 (void *)(buf
+ 32), x2
);
194 _mm_storeu_si128(iv
, ivx
);
197 /* see bearssl_block.h */
198 const br_block_cbcdec_class br_aes_x86ni_cbcdec_vtable
= {
199 sizeof(br_aes_x86ni_cbcdec_keys
),
202 (void (*)(const br_block_cbcdec_class
**, const void *, size_t))
203 &br_aes_x86ni_cbcdec_init
,
204 (void (*)(const br_block_cbcdec_class
*const *, void *, void *, size_t))
205 &br_aes_x86ni_cbcdec_run
208 /* see bearssl_block.h */
209 const br_block_cbcdec_class
*
210 br_aes_x86ni_cbcdec_get_vtable(void)
212 return br_aes_x86ni_supported() ? &br_aes_x86ni_cbcdec_vtable
: NULL
;
217 /* see bearssl_block.h */
218 const br_block_cbcdec_class
*
219 br_aes_x86ni_cbcdec_get_vtable(void)