1 /* crypto/aes/aes_core.c -*- mode:C; c-file-style: "eay" -*- */
5 * @version 3.0 (December 2000)
7 * Optimised ANSI C code for the Rijndael cipher (now AES)
9 * @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>
10 * @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be>
11 * @author Paulo Barreto <paulo.barreto@terra.com.br>
13 * This code is hereby placed in the public domain.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
24 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
25 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 * This is experimental x86[_64] derivative. It assumes little-endian
30 * byte order and expects CPU to sustain unaligned memory references.
31 * It is used as playground for cache-time attack mitigations and
32 * serves as reference C implementation for x86[_64] assembler.
34 * <appro@fy.chalmers.se>
46 #include <openssl/aes.h>
50 * These two parameters control which table, 256-byte or 2KB, is
51 * referenced in outer and respectively inner rounds.
53 #define AES_COMPACT_IN_OUTER_ROUNDS
54 #ifdef AES_COMPACT_IN_OUTER_ROUNDS
55 /* AES_COMPACT_IN_OUTER_ROUNDS costs ~30% in performance, while
56 * adding AES_COMPACT_IN_INNER_ROUNDS reduces benchmark *further*
58 # undef AES_COMPACT_IN_INNER_ROUNDS
62 static void prefetch256(const void *table)
64 volatile unsigned long *t=(void *)table,ret;
68 /* 32 is common least cache-line size */
69 for (sum=0,i=0;i<256/sizeof(t[0]);i+=32/sizeof(t[0])) sum ^= t[i];
74 # define prefetch256(t)
78 #define GETU32(p) (*((u32*)(p)))
80 #if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
81 typedef unsigned __int64 u64;
82 #define U64(C) C##UI64
83 #elif defined(__arch64__)
84 typedef unsigned long u64;
87 typedef unsigned long long u64;
93 # define ROTATE(a,n) _lrotl(a,n)
95 # define ROTATE(a,n) _rotl(a,n)
96 #elif defined(__GNUC__) && __GNUC__>=2
97 # if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
98 # define ROTATE(a,n) ({ register unsigned int ret; \
109 Te [x] = S [x].[02, 01, 01, 03, 02, 01, 01, 03];
110 Te0[x] = S [x].[02, 01, 01, 03];
111 Te1[x] = S [x].[03, 02, 01, 01];
112 Te2[x] = S [x].[01, 03, 02, 01];
113 Te3[x] = S [x].[01, 01, 03, 02];
115 #define Te0 (u32)((u64*)((u8*)Te+0))
116 #define Te1 (u32)((u64*)((u8*)Te+3))
117 #define Te2 (u32)((u64*)((u8*)Te+2))
118 #define Te3 (u32)((u64*)((u8*)Te+1))
120 Td [x] = Si[x].[0e, 09, 0d, 0b, 0e, 09, 0d, 0b];
121 Td0[x] = Si[x].[0e, 09, 0d, 0b];
122 Td1[x] = Si[x].[0b, 0e, 09, 0d];
123 Td2[x] = Si[x].[0d, 0b, 0e, 09];
124 Td3[x] = Si[x].[09, 0d, 0b, 0e];
127 #define Td0 (u32)((u64*)((u8*)Td+0))
128 #define Td1 (u32)((u64*)((u8*)Td+3))
129 #define Td2 (u32)((u64*)((u8*)Td+2))
130 #define Td3 (u32)((u64*)((u8*)Td+1))
132 static const u64 Te[256] = {
133 U64(0xa56363c6a56363c6), U64(0x847c7cf8847c7cf8),
134 U64(0x997777ee997777ee), U64(0x8d7b7bf68d7b7bf6),
135 U64(0x0df2f2ff0df2f2ff), U64(0xbd6b6bd6bd6b6bd6),
136 U64(0xb16f6fdeb16f6fde), U64(0x54c5c59154c5c591),
137 U64(0x5030306050303060), U64(0x0301010203010102),
138 U64(0xa96767cea96767ce), U64(0x7d2b2b567d2b2b56),
139 U64(0x19fefee719fefee7), U64(0x62d7d7b562d7d7b5),
140 U64(0xe6abab4de6abab4d), U64(0x9a7676ec9a7676ec),
141 U64(0x45caca8f45caca8f), U64(0x9d82821f9d82821f),
142 U64(0x40c9c98940c9c989), U64(0x877d7dfa877d7dfa),
143 U64(0x15fafaef15fafaef), U64(0xeb5959b2eb5959b2),
144 U64(0xc947478ec947478e), U64(0x0bf0f0fb0bf0f0fb),
145 U64(0xecadad41ecadad41), U64(0x67d4d4b367d4d4b3),
146 U64(0xfda2a25ffda2a25f), U64(0xeaafaf45eaafaf45),
147 U64(0xbf9c9c23bf9c9c23), U64(0xf7a4a453f7a4a453),
148 U64(0x967272e4967272e4), U64(0x5bc0c09b5bc0c09b),
149 U64(0xc2b7b775c2b7b775), U64(0x1cfdfde11cfdfde1),
150 U64(0xae93933dae93933d), U64(0x6a26264c6a26264c),
151 U64(0x5a36366c5a36366c), U64(0x413f3f7e413f3f7e),
152 U64(0x02f7f7f502f7f7f5), U64(0x4fcccc834fcccc83),
153 U64(0x5c3434685c343468), U64(0xf4a5a551f4a5a551),
154 U64(0x34e5e5d134e5e5d1), U64(0x08f1f1f908f1f1f9),
155 U64(0x937171e2937171e2), U64(0x73d8d8ab73d8d8ab),
156 U64(0x5331316253313162), U64(0x3f15152a3f15152a),
157 U64(0x0c0404080c040408), U64(0x52c7c79552c7c795),
158 U64(0x6523234665232346), U64(0x5ec3c39d5ec3c39d),
159 U64(0x2818183028181830), U64(0xa1969637a1969637),
160 U64(0x0f05050a0f05050a), U64(0xb59a9a2fb59a9a2f),
161 U64(0x0907070e0907070e), U64(0x3612122436121224),
162 U64(0x9b80801b9b80801b), U64(0x3de2e2df3de2e2df),
163 U64(0x26ebebcd26ebebcd), U64(0x6927274e6927274e),
164 U64(0xcdb2b27fcdb2b27f), U64(0x9f7575ea9f7575ea),
165 U64(0x1b0909121b090912), U64(0x9e83831d9e83831d),
166 U64(0x742c2c58742c2c58), U64(0x2e1a1a342e1a1a34),
167 U64(0x2d1b1b362d1b1b36), U64(0xb26e6edcb26e6edc),
168 U64(0xee5a5ab4ee5a5ab4), U64(0xfba0a05bfba0a05b),
169 U64(0xf65252a4f65252a4), U64(0x4d3b3b764d3b3b76),
170 U64(0x61d6d6b761d6d6b7), U64(0xceb3b37dceb3b37d),
171 U64(0x7b2929527b292952), U64(0x3ee3e3dd3ee3e3dd),
172 U64(0x712f2f5e712f2f5e), U64(0x9784841397848413),
173 U64(0xf55353a6f55353a6), U64(0x68d1d1b968d1d1b9),
174 U64(0x0000000000000000), U64(0x2cededc12cededc1),
175 U64(0x6020204060202040), U64(0x1ffcfce31ffcfce3),
176 U64(0xc8b1b179c8b1b179), U64(0xed5b5bb6ed5b5bb6),
177 U64(0xbe6a6ad4be6a6ad4), U64(0x46cbcb8d46cbcb8d),
178 U64(0xd9bebe67d9bebe67), U64(0x4b3939724b393972),
179 U64(0xde4a4a94de4a4a94), U64(0xd44c4c98d44c4c98),
180 U64(0xe85858b0e85858b0), U64(0x4acfcf854acfcf85),
181 U64(0x6bd0d0bb6bd0d0bb), U64(0x2aefefc52aefefc5),
182 U64(0xe5aaaa4fe5aaaa4f), U64(0x16fbfbed16fbfbed),
183 U64(0xc5434386c5434386), U64(0xd74d4d9ad74d4d9a),
184 U64(0x5533336655333366), U64(0x9485851194858511),
185 U64(0xcf45458acf45458a), U64(0x10f9f9e910f9f9e9),
186 U64(0x0602020406020204), U64(0x817f7ffe817f7ffe),
187 U64(0xf05050a0f05050a0), U64(0x443c3c78443c3c78),
188 U64(0xba9f9f25ba9f9f25), U64(0xe3a8a84be3a8a84b),
189 U64(0xf35151a2f35151a2), U64(0xfea3a35dfea3a35d),
190 U64(0xc0404080c0404080), U64(0x8a8f8f058a8f8f05),
191 U64(0xad92923fad92923f), U64(0xbc9d9d21bc9d9d21),
192 U64(0x4838387048383870), U64(0x04f5f5f104f5f5f1),
193 U64(0xdfbcbc63dfbcbc63), U64(0xc1b6b677c1b6b677),
194 U64(0x75dadaaf75dadaaf), U64(0x6321214263212142),
195 U64(0x3010102030101020), U64(0x1affffe51affffe5),
196 U64(0x0ef3f3fd0ef3f3fd), U64(0x6dd2d2bf6dd2d2bf),
197 U64(0x4ccdcd814ccdcd81), U64(0x140c0c18140c0c18),
198 U64(0x3513132635131326), U64(0x2fececc32fececc3),
199 U64(0xe15f5fbee15f5fbe), U64(0xa2979735a2979735),
200 U64(0xcc444488cc444488), U64(0x3917172e3917172e),
201 U64(0x57c4c49357c4c493), U64(0xf2a7a755f2a7a755),
202 U64(0x827e7efc827e7efc), U64(0x473d3d7a473d3d7a),
203 U64(0xac6464c8ac6464c8), U64(0xe75d5dbae75d5dba),
204 U64(0x2b1919322b191932), U64(0x957373e6957373e6),
205 U64(0xa06060c0a06060c0), U64(0x9881811998818119),
206 U64(0xd14f4f9ed14f4f9e), U64(0x7fdcdca37fdcdca3),
207 U64(0x6622224466222244), U64(0x7e2a2a547e2a2a54),
208 U64(0xab90903bab90903b), U64(0x8388880b8388880b),
209 U64(0xca46468cca46468c), U64(0x29eeeec729eeeec7),
210 U64(0xd3b8b86bd3b8b86b), U64(0x3c1414283c141428),
211 U64(0x79dedea779dedea7), U64(0xe25e5ebce25e5ebc),
212 U64(0x1d0b0b161d0b0b16), U64(0x76dbdbad76dbdbad),
213 U64(0x3be0e0db3be0e0db), U64(0x5632326456323264),
214 U64(0x4e3a3a744e3a3a74), U64(0x1e0a0a141e0a0a14),
215 U64(0xdb494992db494992), U64(0x0a06060c0a06060c),
216 U64(0x6c2424486c242448), U64(0xe45c5cb8e45c5cb8),
217 U64(0x5dc2c29f5dc2c29f), U64(0x6ed3d3bd6ed3d3bd),
218 U64(0xefacac43efacac43), U64(0xa66262c4a66262c4),
219 U64(0xa8919139a8919139), U64(0xa4959531a4959531),
220 U64(0x37e4e4d337e4e4d3), U64(0x8b7979f28b7979f2),
221 U64(0x32e7e7d532e7e7d5), U64(0x43c8c88b43c8c88b),
222 U64(0x5937376e5937376e), U64(0xb76d6ddab76d6dda),
223 U64(0x8c8d8d018c8d8d01), U64(0x64d5d5b164d5d5b1),
224 U64(0xd24e4e9cd24e4e9c), U64(0xe0a9a949e0a9a949),
225 U64(0xb46c6cd8b46c6cd8), U64(0xfa5656acfa5656ac),
226 U64(0x07f4f4f307f4f4f3), U64(0x25eaeacf25eaeacf),
227 U64(0xaf6565caaf6565ca), U64(0x8e7a7af48e7a7af4),
228 U64(0xe9aeae47e9aeae47), U64(0x1808081018080810),
229 U64(0xd5baba6fd5baba6f), U64(0x887878f0887878f0),
230 U64(0x6f25254a6f25254a), U64(0x722e2e5c722e2e5c),
231 U64(0x241c1c38241c1c38), U64(0xf1a6a657f1a6a657),
232 U64(0xc7b4b473c7b4b473), U64(0x51c6c69751c6c697),
233 U64(0x23e8e8cb23e8e8cb), U64(0x7cdddda17cdddda1),
234 U64(0x9c7474e89c7474e8), U64(0x211f1f3e211f1f3e),
235 U64(0xdd4b4b96dd4b4b96), U64(0xdcbdbd61dcbdbd61),
236 U64(0x868b8b0d868b8b0d), U64(0x858a8a0f858a8a0f),
237 U64(0x907070e0907070e0), U64(0x423e3e7c423e3e7c),
238 U64(0xc4b5b571c4b5b571), U64(0xaa6666ccaa6666cc),
239 U64(0xd8484890d8484890), U64(0x0503030605030306),
240 U64(0x01f6f6f701f6f6f7), U64(0x120e0e1c120e0e1c),
241 U64(0xa36161c2a36161c2), U64(0x5f35356a5f35356a),
242 U64(0xf95757aef95757ae), U64(0xd0b9b969d0b9b969),
243 U64(0x9186861791868617), U64(0x58c1c19958c1c199),
244 U64(0x271d1d3a271d1d3a), U64(0xb99e9e27b99e9e27),
245 U64(0x38e1e1d938e1e1d9), U64(0x13f8f8eb13f8f8eb),
246 U64(0xb398982bb398982b), U64(0x3311112233111122),
247 U64(0xbb6969d2bb6969d2), U64(0x70d9d9a970d9d9a9),
248 U64(0x898e8e07898e8e07), U64(0xa7949433a7949433),
249 U64(0xb69b9b2db69b9b2d), U64(0x221e1e3c221e1e3c),
250 U64(0x9287871592878715), U64(0x20e9e9c920e9e9c9),
251 U64(0x49cece8749cece87), U64(0xff5555aaff5555aa),
252 U64(0x7828285078282850), U64(0x7adfdfa57adfdfa5),
253 U64(0x8f8c8c038f8c8c03), U64(0xf8a1a159f8a1a159),
254 U64(0x8089890980898909), U64(0x170d0d1a170d0d1a),
255 U64(0xdabfbf65dabfbf65), U64(0x31e6e6d731e6e6d7),
256 U64(0xc6424284c6424284), U64(0xb86868d0b86868d0),
257 U64(0xc3414182c3414182), U64(0xb0999929b0999929),
258 U64(0x772d2d5a772d2d5a), U64(0x110f0f1e110f0f1e),
259 U64(0xcbb0b07bcbb0b07b), U64(0xfc5454a8fc5454a8),
260 U64(0xd6bbbb6dd6bbbb6d), U64(0x3a16162c3a16162c)
263 static const u8 Te4[256] = {
264 0x63U, 0x7cU, 0x77U, 0x7bU, 0xf2U, 0x6bU, 0x6fU, 0xc5U,
265 0x30U, 0x01U, 0x67U, 0x2bU, 0xfeU, 0xd7U, 0xabU, 0x76U,
266 0xcaU, 0x82U, 0xc9U, 0x7dU, 0xfaU, 0x59U, 0x47U, 0xf0U,
267 0xadU, 0xd4U, 0xa2U, 0xafU, 0x9cU, 0xa4U, 0x72U, 0xc0U,
268 0xb7U, 0xfdU, 0x93U, 0x26U, 0x36U, 0x3fU, 0xf7U, 0xccU,
269 0x34U, 0xa5U, 0xe5U, 0xf1U, 0x71U, 0xd8U, 0x31U, 0x15U,
270 0x04U, 0xc7U, 0x23U, 0xc3U, 0x18U, 0x96U, 0x05U, 0x9aU,
271 0x07U, 0x12U, 0x80U, 0xe2U, 0xebU, 0x27U, 0xb2U, 0x75U,
272 0x09U, 0x83U, 0x2cU, 0x1aU, 0x1bU, 0x6eU, 0x5aU, 0xa0U,
273 0x52U, 0x3bU, 0xd6U, 0xb3U, 0x29U, 0xe3U, 0x2fU, 0x84U,
274 0x53U, 0xd1U, 0x00U, 0xedU, 0x20U, 0xfcU, 0xb1U, 0x5bU,
275 0x6aU, 0xcbU, 0xbeU, 0x39U, 0x4aU, 0x4cU, 0x58U, 0xcfU,
276 0xd0U, 0xefU, 0xaaU, 0xfbU, 0x43U, 0x4dU, 0x33U, 0x85U,
277 0x45U, 0xf9U, 0x02U, 0x7fU, 0x50U, 0x3cU, 0x9fU, 0xa8U,
278 0x51U, 0xa3U, 0x40U, 0x8fU, 0x92U, 0x9dU, 0x38U, 0xf5U,
279 0xbcU, 0xb6U, 0xdaU, 0x21U, 0x10U, 0xffU, 0xf3U, 0xd2U,
280 0xcdU, 0x0cU, 0x13U, 0xecU, 0x5fU, 0x97U, 0x44U, 0x17U,
281 0xc4U, 0xa7U, 0x7eU, 0x3dU, 0x64U, 0x5dU, 0x19U, 0x73U,
282 0x60U, 0x81U, 0x4fU, 0xdcU, 0x22U, 0x2aU, 0x90U, 0x88U,
283 0x46U, 0xeeU, 0xb8U, 0x14U, 0xdeU, 0x5eU, 0x0bU, 0xdbU,
284 0xe0U, 0x32U, 0x3aU, 0x0aU, 0x49U, 0x06U, 0x24U, 0x5cU,
285 0xc2U, 0xd3U, 0xacU, 0x62U, 0x91U, 0x95U, 0xe4U, 0x79U,
286 0xe7U, 0xc8U, 0x37U, 0x6dU, 0x8dU, 0xd5U, 0x4eU, 0xa9U,
287 0x6cU, 0x56U, 0xf4U, 0xeaU, 0x65U, 0x7aU, 0xaeU, 0x08U,
288 0xbaU, 0x78U, 0x25U, 0x2eU, 0x1cU, 0xa6U, 0xb4U, 0xc6U,
289 0xe8U, 0xddU, 0x74U, 0x1fU, 0x4bU, 0xbdU, 0x8bU, 0x8aU,
290 0x70U, 0x3eU, 0xb5U, 0x66U, 0x48U, 0x03U, 0xf6U, 0x0eU,
291 0x61U, 0x35U, 0x57U, 0xb9U, 0x86U, 0xc1U, 0x1dU, 0x9eU,
292 0xe1U, 0xf8U, 0x98U, 0x11U, 0x69U, 0xd9U, 0x8eU, 0x94U,
293 0x9bU, 0x1eU, 0x87U, 0xe9U, 0xceU, 0x55U, 0x28U, 0xdfU,
294 0x8cU, 0xa1U, 0x89U, 0x0dU, 0xbfU, 0xe6U, 0x42U, 0x68U,
295 0x41U, 0x99U, 0x2dU, 0x0fU, 0xb0U, 0x54U, 0xbbU, 0x16U
298 static const u64 Td[256] = {
299 U64(0x50a7f45150a7f451), U64(0x5365417e5365417e),
300 U64(0xc3a4171ac3a4171a), U64(0x965e273a965e273a),
301 U64(0xcb6bab3bcb6bab3b), U64(0xf1459d1ff1459d1f),
302 U64(0xab58faacab58faac), U64(0x9303e34b9303e34b),
303 U64(0x55fa302055fa3020), U64(0xf66d76adf66d76ad),
304 U64(0x9176cc889176cc88), U64(0x254c02f5254c02f5),
305 U64(0xfcd7e54ffcd7e54f), U64(0xd7cb2ac5d7cb2ac5),
306 U64(0x8044352680443526), U64(0x8fa362b58fa362b5),
307 U64(0x495ab1de495ab1de), U64(0x671bba25671bba25),
308 U64(0x980eea45980eea45), U64(0xe1c0fe5de1c0fe5d),
309 U64(0x02752fc302752fc3), U64(0x12f04c8112f04c81),
310 U64(0xa397468da397468d), U64(0xc6f9d36bc6f9d36b),
311 U64(0xe75f8f03e75f8f03), U64(0x959c9215959c9215),
312 U64(0xeb7a6dbfeb7a6dbf), U64(0xda595295da595295),
313 U64(0x2d83bed42d83bed4), U64(0xd3217458d3217458),
314 U64(0x2969e0492969e049), U64(0x44c8c98e44c8c98e),
315 U64(0x6a89c2756a89c275), U64(0x78798ef478798ef4),
316 U64(0x6b3e58996b3e5899), U64(0xdd71b927dd71b927),
317 U64(0xb64fe1beb64fe1be), U64(0x17ad88f017ad88f0),
318 U64(0x66ac20c966ac20c9), U64(0xb43ace7db43ace7d),
319 U64(0x184adf63184adf63), U64(0x82311ae582311ae5),
320 U64(0x6033519760335197), U64(0x457f5362457f5362),
321 U64(0xe07764b1e07764b1), U64(0x84ae6bbb84ae6bbb),
322 U64(0x1ca081fe1ca081fe), U64(0x942b08f9942b08f9),
323 U64(0x5868487058684870), U64(0x19fd458f19fd458f),
324 U64(0x876cde94876cde94), U64(0xb7f87b52b7f87b52),
325 U64(0x23d373ab23d373ab), U64(0xe2024b72e2024b72),
326 U64(0x578f1fe3578f1fe3), U64(0x2aab55662aab5566),
327 U64(0x0728ebb20728ebb2), U64(0x03c2b52f03c2b52f),
328 U64(0x9a7bc5869a7bc586), U64(0xa50837d3a50837d3),
329 U64(0xf2872830f2872830), U64(0xb2a5bf23b2a5bf23),
330 U64(0xba6a0302ba6a0302), U64(0x5c8216ed5c8216ed),
331 U64(0x2b1ccf8a2b1ccf8a), U64(0x92b479a792b479a7),
332 U64(0xf0f207f3f0f207f3), U64(0xa1e2694ea1e2694e),
333 U64(0xcdf4da65cdf4da65), U64(0xd5be0506d5be0506),
334 U64(0x1f6234d11f6234d1), U64(0x8afea6c48afea6c4),
335 U64(0x9d532e349d532e34), U64(0xa055f3a2a055f3a2),
336 U64(0x32e18a0532e18a05), U64(0x75ebf6a475ebf6a4),
337 U64(0x39ec830b39ec830b), U64(0xaaef6040aaef6040),
338 U64(0x069f715e069f715e), U64(0x51106ebd51106ebd),
339 U64(0xf98a213ef98a213e), U64(0x3d06dd963d06dd96),
340 U64(0xae053eddae053edd), U64(0x46bde64d46bde64d),
341 U64(0xb58d5491b58d5491), U64(0x055dc471055dc471),
342 U64(0x6fd406046fd40604), U64(0xff155060ff155060),
343 U64(0x24fb981924fb9819), U64(0x97e9bdd697e9bdd6),
344 U64(0xcc434089cc434089), U64(0x779ed967779ed967),
345 U64(0xbd42e8b0bd42e8b0), U64(0x888b8907888b8907),
346 U64(0x385b19e7385b19e7), U64(0xdbeec879dbeec879),
347 U64(0x470a7ca1470a7ca1), U64(0xe90f427ce90f427c),
348 U64(0xc91e84f8c91e84f8), U64(0x0000000000000000),
349 U64(0x8386800983868009), U64(0x48ed2b3248ed2b32),
350 U64(0xac70111eac70111e), U64(0x4e725a6c4e725a6c),
351 U64(0xfbff0efdfbff0efd), U64(0x5638850f5638850f),
352 U64(0x1ed5ae3d1ed5ae3d), U64(0x27392d3627392d36),
353 U64(0x64d90f0a64d90f0a), U64(0x21a65c6821a65c68),
354 U64(0xd1545b9bd1545b9b), U64(0x3a2e36243a2e3624),
355 U64(0xb1670a0cb1670a0c), U64(0x0fe757930fe75793),
356 U64(0xd296eeb4d296eeb4), U64(0x9e919b1b9e919b1b),
357 U64(0x4fc5c0804fc5c080), U64(0xa220dc61a220dc61),
358 U64(0x694b775a694b775a), U64(0x161a121c161a121c),
359 U64(0x0aba93e20aba93e2), U64(0xe52aa0c0e52aa0c0),
360 U64(0x43e0223c43e0223c), U64(0x1d171b121d171b12),
361 U64(0x0b0d090e0b0d090e), U64(0xadc78bf2adc78bf2),
362 U64(0xb9a8b62db9a8b62d), U64(0xc8a91e14c8a91e14),
363 U64(0x8519f1578519f157), U64(0x4c0775af4c0775af),
364 U64(0xbbdd99eebbdd99ee), U64(0xfd607fa3fd607fa3),
365 U64(0x9f2601f79f2601f7), U64(0xbcf5725cbcf5725c),
366 U64(0xc53b6644c53b6644), U64(0x347efb5b347efb5b),
367 U64(0x7629438b7629438b), U64(0xdcc623cbdcc623cb),
368 U64(0x68fcedb668fcedb6), U64(0x63f1e4b863f1e4b8),
369 U64(0xcadc31d7cadc31d7), U64(0x1085634210856342),
370 U64(0x4022971340229713), U64(0x2011c6842011c684),
371 U64(0x7d244a857d244a85), U64(0xf83dbbd2f83dbbd2),
372 U64(0x1132f9ae1132f9ae), U64(0x6da129c76da129c7),
373 U64(0x4b2f9e1d4b2f9e1d), U64(0xf330b2dcf330b2dc),
374 U64(0xec52860dec52860d), U64(0xd0e3c177d0e3c177),
375 U64(0x6c16b32b6c16b32b), U64(0x99b970a999b970a9),
376 U64(0xfa489411fa489411), U64(0x2264e9472264e947),
377 U64(0xc48cfca8c48cfca8), U64(0x1a3ff0a01a3ff0a0),
378 U64(0xd82c7d56d82c7d56), U64(0xef903322ef903322),
379 U64(0xc74e4987c74e4987), U64(0xc1d138d9c1d138d9),
380 U64(0xfea2ca8cfea2ca8c), U64(0x360bd498360bd498),
381 U64(0xcf81f5a6cf81f5a6), U64(0x28de7aa528de7aa5),
382 U64(0x268eb7da268eb7da), U64(0xa4bfad3fa4bfad3f),
383 U64(0xe49d3a2ce49d3a2c), U64(0x0d9278500d927850),
384 U64(0x9bcc5f6a9bcc5f6a), U64(0x62467e5462467e54),
385 U64(0xc2138df6c2138df6), U64(0xe8b8d890e8b8d890),
386 U64(0x5ef7392e5ef7392e), U64(0xf5afc382f5afc382),
387 U64(0xbe805d9fbe805d9f), U64(0x7c93d0697c93d069),
388 U64(0xa92dd56fa92dd56f), U64(0xb31225cfb31225cf),
389 U64(0x3b99acc83b99acc8), U64(0xa77d1810a77d1810),
390 U64(0x6e639ce86e639ce8), U64(0x7bbb3bdb7bbb3bdb),
391 U64(0x097826cd097826cd), U64(0xf418596ef418596e),
392 U64(0x01b79aec01b79aec), U64(0xa89a4f83a89a4f83),
393 U64(0x656e95e6656e95e6), U64(0x7ee6ffaa7ee6ffaa),
394 U64(0x08cfbc2108cfbc21), U64(0xe6e815efe6e815ef),
395 U64(0xd99be7bad99be7ba), U64(0xce366f4ace366f4a),
396 U64(0xd4099fead4099fea), U64(0xd67cb029d67cb029),
397 U64(0xafb2a431afb2a431), U64(0x31233f2a31233f2a),
398 U64(0x3094a5c63094a5c6), U64(0xc066a235c066a235),
399 U64(0x37bc4e7437bc4e74), U64(0xa6ca82fca6ca82fc),
400 U64(0xb0d090e0b0d090e0), U64(0x15d8a73315d8a733),
401 U64(0x4a9804f14a9804f1), U64(0xf7daec41f7daec41),
402 U64(0x0e50cd7f0e50cd7f), U64(0x2ff691172ff69117),
403 U64(0x8dd64d768dd64d76), U64(0x4db0ef434db0ef43),
404 U64(0x544daacc544daacc), U64(0xdf0496e4df0496e4),
405 U64(0xe3b5d19ee3b5d19e), U64(0x1b886a4c1b886a4c),
406 U64(0xb81f2cc1b81f2cc1), U64(0x7f5165467f516546),
407 U64(0x04ea5e9d04ea5e9d), U64(0x5d358c015d358c01),
408 U64(0x737487fa737487fa), U64(0x2e410bfb2e410bfb),
409 U64(0x5a1d67b35a1d67b3), U64(0x52d2db9252d2db92),
410 U64(0x335610e9335610e9), U64(0x1347d66d1347d66d),
411 U64(0x8c61d79a8c61d79a), U64(0x7a0ca1377a0ca137),
412 U64(0x8e14f8598e14f859), U64(0x893c13eb893c13eb),
413 U64(0xee27a9ceee27a9ce), U64(0x35c961b735c961b7),
414 U64(0xede51ce1ede51ce1), U64(0x3cb1477a3cb1477a),
415 U64(0x59dfd29c59dfd29c), U64(0x3f73f2553f73f255),
416 U64(0x79ce141879ce1418), U64(0xbf37c773bf37c773),
417 U64(0xeacdf753eacdf753), U64(0x5baafd5f5baafd5f),
418 U64(0x146f3ddf146f3ddf), U64(0x86db447886db4478),
419 U64(0x81f3afca81f3afca), U64(0x3ec468b93ec468b9),
420 U64(0x2c3424382c342438), U64(0x5f40a3c25f40a3c2),
421 U64(0x72c31d1672c31d16), U64(0x0c25e2bc0c25e2bc),
422 U64(0x8b493c288b493c28), U64(0x41950dff41950dff),
423 U64(0x7101a8397101a839), U64(0xdeb30c08deb30c08),
424 U64(0x9ce4b4d89ce4b4d8), U64(0x90c1566490c15664),
425 U64(0x6184cb7b6184cb7b), U64(0x70b632d570b632d5),
426 U64(0x745c6c48745c6c48), U64(0x4257b8d04257b8d0)
428 static const u8 Td4[256] = {
429 0x52U, 0x09U, 0x6aU, 0xd5U, 0x30U, 0x36U, 0xa5U, 0x38U,
430 0xbfU, 0x40U, 0xa3U, 0x9eU, 0x81U, 0xf3U, 0xd7U, 0xfbU,
431 0x7cU, 0xe3U, 0x39U, 0x82U, 0x9bU, 0x2fU, 0xffU, 0x87U,
432 0x34U, 0x8eU, 0x43U, 0x44U, 0xc4U, 0xdeU, 0xe9U, 0xcbU,
433 0x54U, 0x7bU, 0x94U, 0x32U, 0xa6U, 0xc2U, 0x23U, 0x3dU,
434 0xeeU, 0x4cU, 0x95U, 0x0bU, 0x42U, 0xfaU, 0xc3U, 0x4eU,
435 0x08U, 0x2eU, 0xa1U, 0x66U, 0x28U, 0xd9U, 0x24U, 0xb2U,
436 0x76U, 0x5bU, 0xa2U, 0x49U, 0x6dU, 0x8bU, 0xd1U, 0x25U,
437 0x72U, 0xf8U, 0xf6U, 0x64U, 0x86U, 0x68U, 0x98U, 0x16U,
438 0xd4U, 0xa4U, 0x5cU, 0xccU, 0x5dU, 0x65U, 0xb6U, 0x92U,
439 0x6cU, 0x70U, 0x48U, 0x50U, 0xfdU, 0xedU, 0xb9U, 0xdaU,
440 0x5eU, 0x15U, 0x46U, 0x57U, 0xa7U, 0x8dU, 0x9dU, 0x84U,
441 0x90U, 0xd8U, 0xabU, 0x00U, 0x8cU, 0xbcU, 0xd3U, 0x0aU,
442 0xf7U, 0xe4U, 0x58U, 0x05U, 0xb8U, 0xb3U, 0x45U, 0x06U,
443 0xd0U, 0x2cU, 0x1eU, 0x8fU, 0xcaU, 0x3fU, 0x0fU, 0x02U,
444 0xc1U, 0xafU, 0xbdU, 0x03U, 0x01U, 0x13U, 0x8aU, 0x6bU,
445 0x3aU, 0x91U, 0x11U, 0x41U, 0x4fU, 0x67U, 0xdcU, 0xeaU,
446 0x97U, 0xf2U, 0xcfU, 0xceU, 0xf0U, 0xb4U, 0xe6U, 0x73U,
447 0x96U, 0xacU, 0x74U, 0x22U, 0xe7U, 0xadU, 0x35U, 0x85U,
448 0xe2U, 0xf9U, 0x37U, 0xe8U, 0x1cU, 0x75U, 0xdfU, 0x6eU,
449 0x47U, 0xf1U, 0x1aU, 0x71U, 0x1dU, 0x29U, 0xc5U, 0x89U,
450 0x6fU, 0xb7U, 0x62U, 0x0eU, 0xaaU, 0x18U, 0xbeU, 0x1bU,
451 0xfcU, 0x56U, 0x3eU, 0x4bU, 0xc6U, 0xd2U, 0x79U, 0x20U,
452 0x9aU, 0xdbU, 0xc0U, 0xfeU, 0x78U, 0xcdU, 0x5aU, 0xf4U,
453 0x1fU, 0xddU, 0xa8U, 0x33U, 0x88U, 0x07U, 0xc7U, 0x31U,
454 0xb1U, 0x12U, 0x10U, 0x59U, 0x27U, 0x80U, 0xecU, 0x5fU,
455 0x60U, 0x51U, 0x7fU, 0xa9U, 0x19U, 0xb5U, 0x4aU, 0x0dU,
456 0x2dU, 0xe5U, 0x7aU, 0x9fU, 0x93U, 0xc9U, 0x9cU, 0xefU,
457 0xa0U, 0xe0U, 0x3bU, 0x4dU, 0xaeU, 0x2aU, 0xf5U, 0xb0U,
458 0xc8U, 0xebU, 0xbbU, 0x3cU, 0x83U, 0x53U, 0x99U, 0x61U,
459 0x17U, 0x2bU, 0x04U, 0x7eU, 0xbaU, 0x77U, 0xd6U, 0x26U,
460 0xe1U, 0x69U, 0x14U, 0x63U, 0x55U, 0x21U, 0x0cU, 0x7dU
463 static const u32 rcon[] = {
464 0x00000001U, 0x00000002U, 0x00000004U, 0x00000008U,
465 0x00000010U, 0x00000020U, 0x00000040U, 0x00000080U,
466 0x0000001bU, 0x00000036U, /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */
470 * Expand the cipher key into the encryption key schedule.
472 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
479 if (!userKey || !key)
481 if (bits != 128 && bits != 192 && bits != 256)
493 rk[0] = GETU32(userKey );
494 rk[1] = GETU32(userKey + 4);
495 rk[2] = GETU32(userKey + 8);
496 rk[3] = GETU32(userKey + 12);
501 (Te4[(temp >> 8) & 0xff] ) ^
502 (Te4[(temp >> 16) & 0xff] << 8) ^
503 (Te4[(temp >> 24) ] << 16) ^
504 (Te4[(temp ) & 0xff] << 24) ^
506 rk[5] = rk[1] ^ rk[4];
507 rk[6] = rk[2] ^ rk[5];
508 rk[7] = rk[3] ^ rk[6];
515 rk[4] = GETU32(userKey + 16);
516 rk[5] = GETU32(userKey + 20);
521 (Te4[(temp >> 8) & 0xff] ) ^
522 (Te4[(temp >> 16) & 0xff] << 8) ^
523 (Te4[(temp >> 24) ] << 16) ^
524 (Te4[(temp ) & 0xff] << 24) ^
526 rk[ 7] = rk[ 1] ^ rk[ 6];
527 rk[ 8] = rk[ 2] ^ rk[ 7];
528 rk[ 9] = rk[ 3] ^ rk[ 8];
532 rk[10] = rk[ 4] ^ rk[ 9];
533 rk[11] = rk[ 5] ^ rk[10];
537 rk[6] = GETU32(userKey + 24);
538 rk[7] = GETU32(userKey + 28);
543 (Te4[(temp >> 8) & 0xff] ) ^
544 (Te4[(temp >> 16) & 0xff] << 8) ^
545 (Te4[(temp >> 24) ] << 16) ^
546 (Te4[(temp ) & 0xff] << 24) ^
548 rk[ 9] = rk[ 1] ^ rk[ 8];
549 rk[10] = rk[ 2] ^ rk[ 9];
550 rk[11] = rk[ 3] ^ rk[10];
556 (Te4[(temp ) & 0xff] ) ^
557 (Te4[(temp >> 8) & 0xff] << 8) ^
558 (Te4[(temp >> 16) & 0xff] << 16) ^
559 (Te4[(temp >> 24) ] << 24);
560 rk[13] = rk[ 5] ^ rk[12];
561 rk[14] = rk[ 6] ^ rk[13];
562 rk[15] = rk[ 7] ^ rk[14];
571 * Expand the cipher key into the decryption key schedule.
573 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
580 /* first, start with an encryption schedule */
581 status = AES_set_encrypt_key(userKey, bits, key);
587 /* invert the order of the round keys: */
588 for (i = 0, j = 4*(key->rounds); i < j; i += 4, j -= 4) {
589 temp = rk[i ]; rk[i ] = rk[j ]; rk[j ] = temp;
590 temp = rk[i + 1]; rk[i + 1] = rk[j + 1]; rk[j + 1] = temp;
591 temp = rk[i + 2]; rk[i + 2] = rk[j + 2]; rk[j + 2] = temp;
592 temp = rk[i + 3]; rk[i + 3] = rk[j + 3]; rk[j + 3] = temp;
594 /* apply the inverse MixColumn transform to all round keys but the first and the last: */
595 for (i = 1; i < (key->rounds); i++) {
598 for (j = 0; j < 4; j++) {
599 u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;
602 m = tp1 & 0x80808080;
603 tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
604 ((m - (m >> 7)) & 0x1b1b1b1b);
605 m = tp2 & 0x80808080;
606 tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
607 ((m - (m >> 7)) & 0x1b1b1b1b);
608 m = tp4 & 0x80808080;
609 tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
610 ((m - (m >> 7)) & 0x1b1b1b1b);
614 tpe = tp8 ^ tp4 ^ tp2;
616 rk[j] = tpe ^ ROTATE(tpd,16) ^
617 ROTATE(tp9,8) ^ ROTATE(tpb,24);
619 rk[j] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
620 (tp9 >> 24) ^ (tp9 << 8) ^
621 (tpb >> 8) ^ (tpb << 24);
626 Td0[Te2[(rk[0] ) & 0xff] & 0xff] ^
627 Td1[Te2[(rk[0] >> 8) & 0xff] & 0xff] ^
628 Td2[Te2[(rk[0] >> 16) & 0xff] & 0xff] ^
629 Td3[Te2[(rk[0] >> 24) ] & 0xff];
631 Td0[Te2[(rk[1] ) & 0xff] & 0xff] ^
632 Td1[Te2[(rk[1] >> 8) & 0xff] & 0xff] ^
633 Td2[Te2[(rk[1] >> 16) & 0xff] & 0xff] ^
634 Td3[Te2[(rk[1] >> 24) ] & 0xff];
636 Td0[Te2[(rk[2] ) & 0xff] & 0xff] ^
637 Td1[Te2[(rk[2] >> 8) & 0xff] & 0xff] ^
638 Td2[Te2[(rk[2] >> 16) & 0xff] & 0xff] ^
639 Td3[Te2[(rk[2] >> 24) ] & 0xff];
641 Td0[Te2[(rk[3] ) & 0xff] & 0xff] ^
642 Td1[Te2[(rk[3] >> 8) & 0xff] & 0xff] ^
643 Td2[Te2[(rk[3] >> 16) & 0xff] & 0xff] ^
644 Td3[Te2[(rk[3] >> 24) ] & 0xff];
651 * Encrypt a single block
652 * in and out can overlap
654 void AES_encrypt(const unsigned char *in, unsigned char *out,
655 const AES_KEY *key) {
658 u32 s0, s1, s2, s3, t[4];
661 assert(in && out && key);
665 * map byte array block to cipher state
666 * and add initial round key:
668 s0 = GETU32(in ) ^ rk[0];
669 s1 = GETU32(in + 4) ^ rk[1];
670 s2 = GETU32(in + 8) ^ rk[2];
671 s3 = GETU32(in + 12) ^ rk[3];
673 #if defined(AES_COMPACT_IN_OUTER_ROUNDS)
676 t[0] = Te4[(s0 ) & 0xff] ^
677 Te4[(s1 >> 8) & 0xff] << 8 ^
678 Te4[(s2 >> 16) & 0xff] << 16 ^
679 Te4[(s3 >> 24) ] << 24;
680 t[1] = Te4[(s1 ) & 0xff] ^
681 Te4[(s2 >> 8) & 0xff] << 8 ^
682 Te4[(s3 >> 16) & 0xff] << 16 ^
683 Te4[(s0 >> 24) ] << 24;
684 t[2] = Te4[(s2 ) & 0xff] ^
685 Te4[(s3 >> 8) & 0xff] << 8 ^
686 Te4[(s0 >> 16) & 0xff] << 16 ^
687 Te4[(s1 >> 24) ] << 24;
688 t[3] = Te4[(s3 ) & 0xff] ^
689 Te4[(s0 >> 8) & 0xff] << 8 ^
690 Te4[(s1 >> 16) & 0xff] << 16 ^
691 Te4[(s2 >> 24) ] << 24;
693 /* now do the linear transform using words */
697 for (i = 0; i < 4; i++) {
699 r1 = r0 & 0x80808080;
700 r2 = ((r0 & 0x7f7f7f7f) << 1) ^
701 ((r1 - (r1 >> 7)) & 0x1b1b1b1b);
703 t[i] = r2 ^ ROTATE(r2,24) ^ ROTATE(r0,24) ^
704 ROTATE(r0,16) ^ ROTATE(r0,8);
706 t[i] = r2 ^ ((r2 ^ r0) << 24) ^ ((r2 ^ r0) >> 8) ^
707 (r0 << 16) ^ (r0 >> 16) ^
708 (r0 << 8) ^ (r0 >> 24);
714 t[0] = Te0[(s0 ) & 0xff] ^
715 Te1[(s1 >> 8) & 0xff] ^
716 Te2[(s2 >> 16) & 0xff] ^
719 t[1] = Te0[(s1 ) & 0xff] ^
720 Te1[(s2 >> 8) & 0xff] ^
721 Te2[(s3 >> 16) & 0xff] ^
724 t[2] = Te0[(s2 ) & 0xff] ^
725 Te1[(s3 >> 8) & 0xff] ^
726 Te2[(s0 >> 16) & 0xff] ^
729 t[3] = Te0[(s3 ) & 0xff] ^
730 Te1[(s0 >> 8) & 0xff] ^
731 Te2[(s1 >> 16) & 0xff] ^
735 s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
738 * Nr - 2 full rounds:
740 for (rk+=8,r=key->rounds-2; r>0; rk+=4,r--) {
741 #if defined(AES_COMPACT_IN_INNER_ROUNDS)
742 t[0] = Te4[(s0 ) & 0xff] ^
743 Te4[(s1 >> 8) & 0xff] << 8 ^
744 Te4[(s2 >> 16) & 0xff] << 16 ^
745 Te4[(s3 >> 24) ] << 24;
746 t[1] = Te4[(s1 ) & 0xff] ^
747 Te4[(s2 >> 8) & 0xff] << 8 ^
748 Te4[(s3 >> 16) & 0xff] << 16 ^
749 Te4[(s0 >> 24) ] << 24;
750 t[2] = Te4[(s2 ) & 0xff] ^
751 Te4[(s3 >> 8) & 0xff] << 8 ^
752 Te4[(s0 >> 16) & 0xff] << 16 ^
753 Te4[(s1 >> 24) ] << 24;
754 t[3] = Te4[(s3 ) & 0xff] ^
755 Te4[(s0 >> 8) & 0xff] << 8 ^
756 Te4[(s1 >> 16) & 0xff] << 16 ^
757 Te4[(s2 >> 24) ] << 24;
759 /* now do the linear transform using words */
763 for (i = 0; i < 4; i++) {
765 r1 = r0 & 0x80808080;
766 r2 = ((r0 & 0x7f7f7f7f) << 1) ^
767 ((r1 - (r1 >> 7)) & 0x1b1b1b1b);
769 t[i] = r2 ^ ROTATE(r2,24) ^ ROTATE(r0,24) ^
770 ROTATE(r0,16) ^ ROTATE(r0,8);
772 t[i] = r2 ^ ((r2 ^ r0) << 24) ^ ((r2 ^ r0) >> 8) ^
773 (r0 << 16) ^ (r0 >> 16) ^
774 (r0 << 8) ^ (r0 >> 24);
780 t[0] = Te0[(s0 ) & 0xff] ^
781 Te1[(s1 >> 8) & 0xff] ^
782 Te2[(s2 >> 16) & 0xff] ^
785 t[1] = Te0[(s1 ) & 0xff] ^
786 Te1[(s2 >> 8) & 0xff] ^
787 Te2[(s3 >> 16) & 0xff] ^
790 t[2] = Te0[(s2 ) & 0xff] ^
791 Te1[(s3 >> 8) & 0xff] ^
792 Te2[(s0 >> 16) & 0xff] ^
795 t[3] = Te0[(s3 ) & 0xff] ^
796 Te1[(s0 >> 8) & 0xff] ^
797 Te2[(s1 >> 16) & 0xff] ^
801 s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
804 * apply last round and
805 * map cipher state to byte array block:
807 #if defined(AES_COMPACT_IN_OUTER_ROUNDS)
812 Te4[(s1 >> 8) & 0xff] << 8 ^
813 Te4[(s2 >> 16) & 0xff] << 16 ^
814 Te4[(s3 >> 24) ] << 24 ^
818 Te4[(s2 >> 8) & 0xff] << 8 ^
819 Te4[(s3 >> 16) & 0xff] << 16 ^
820 Te4[(s0 >> 24) ] << 24 ^
824 Te4[(s3 >> 8) & 0xff] << 8 ^
825 Te4[(s0 >> 16) & 0xff] << 16 ^
826 Te4[(s1 >> 24) ] << 24 ^
830 Te4[(s0 >> 8) & 0xff] << 8 ^
831 Te4[(s1 >> 16) & 0xff] << 16 ^
832 Te4[(s2 >> 24) ] << 24 ^
836 (Te2[(s0 ) & 0xff] & 0x000000ffU) ^
837 (Te3[(s1 >> 8) & 0xff] & 0x0000ff00U) ^
838 (Te0[(s2 >> 16) & 0xff] & 0x00ff0000U) ^
839 (Te1[(s3 >> 24) ] & 0xff000000U) ^
842 (Te2[(s1 ) & 0xff] & 0x000000ffU) ^
843 (Te3[(s2 >> 8) & 0xff] & 0x0000ff00U) ^
844 (Te0[(s3 >> 16) & 0xff] & 0x00ff0000U) ^
845 (Te1[(s0 >> 24) ] & 0xff000000U) ^
848 (Te2[(s2 ) & 0xff] & 0x000000ffU) ^
849 (Te3[(s3 >> 8) & 0xff] & 0x0000ff00U) ^
850 (Te0[(s0 >> 16) & 0xff] & 0x00ff0000U) ^
851 (Te1[(s1 >> 24) ] & 0xff000000U) ^
854 (Te2[(s3 ) & 0xff] & 0x000000ffU) ^
855 (Te3[(s0 >> 8) & 0xff] & 0x0000ff00U) ^
856 (Te0[(s1 >> 16) & 0xff] & 0x00ff0000U) ^
857 (Te1[(s2 >> 24) ] & 0xff000000U) ^
863 * Decrypt a single block
864 * in and out can overlap
866 void AES_decrypt(const unsigned char *in, unsigned char *out,
867 const AES_KEY *key) {
870 u32 s0, s1, s2, s3, t[4];
873 assert(in && out && key);
877 * map byte array block to cipher state
878 * and add initial round key:
880 s0 = GETU32(in ) ^ rk[0];
881 s1 = GETU32(in + 4) ^ rk[1];
882 s2 = GETU32(in + 8) ^ rk[2];
883 s3 = GETU32(in + 12) ^ rk[3];
885 #if defined(AES_COMPACT_IN_OUTER_ROUNDS)
888 t[0] = Td4[(s0 ) & 0xff] ^
889 Td4[(s3 >> 8) & 0xff] << 8 ^
890 Td4[(s2 >> 16) & 0xff] << 16 ^
891 Td4[(s1 >> 24) ] << 24;
892 t[1] = Td4[(s1 ) & 0xff] ^
893 Td4[(s0 >> 8) & 0xff] << 8 ^
894 Td4[(s3 >> 16) & 0xff] << 16 ^
895 Td4[(s2 >> 24) ] << 24;
896 t[2] = Td4[(s2 ) & 0xff] ^
897 Td4[(s1 >> 8) & 0xff] << 8 ^
898 Td4[(s0 >> 16) & 0xff] << 16 ^
899 Td4[(s3 >> 24) ] << 24;
900 t[3] = Td4[(s3 ) & 0xff] ^
901 Td4[(s2 >> 8) & 0xff] << 8 ^
902 Td4[(s1 >> 16) & 0xff] << 16 ^
903 Td4[(s0 >> 24) ] << 24;
905 /* now do the linear transform using words */
907 u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;
909 for (i = 0; i < 4; i++) {
911 m = tp1 & 0x80808080;
912 tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
913 ((m - (m >> 7)) & 0x1b1b1b1b);
914 m = tp2 & 0x80808080;
915 tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
916 ((m - (m >> 7)) & 0x1b1b1b1b);
917 m = tp4 & 0x80808080;
918 tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
919 ((m - (m >> 7)) & 0x1b1b1b1b);
923 tpe = tp8 ^ tp4 ^ tp2;
925 t[i] = tpe ^ ROTATE(tpd,16) ^
926 ROTATE(tp9,8) ^ ROTATE(tpb,24);
928 t[i] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
929 (tp9 >> 24) ^ (tp9 << 8) ^
930 (tpb >> 8) ^ (tpb << 24);
936 t[0] = Td0[(s0 ) & 0xff] ^
937 Td1[(s3 >> 8) & 0xff] ^
938 Td2[(s2 >> 16) & 0xff] ^
941 t[1] = Td0[(s1 ) & 0xff] ^
942 Td1[(s0 >> 8) & 0xff] ^
943 Td2[(s3 >> 16) & 0xff] ^
946 t[2] = Td0[(s2 ) & 0xff] ^
947 Td1[(s1 >> 8) & 0xff] ^
948 Td2[(s0 >> 16) & 0xff] ^
951 t[3] = Td0[(s3 ) & 0xff] ^
952 Td1[(s2 >> 8) & 0xff] ^
953 Td2[(s1 >> 16) & 0xff] ^
957 s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
960 * Nr - 2 full rounds:
962 for (rk+=8,r=key->rounds-2; r>0; rk+=4,r--) {
963 #if defined(AES_COMPACT_IN_INNER_ROUNDS)
964 t[0] = Td4[(s0 ) & 0xff] ^
965 Td4[(s3 >> 8) & 0xff] << 8 ^
966 Td4[(s2 >> 16) & 0xff] << 16 ^
967 Td4[(s1 >> 24) ] << 24;
968 t[1] = Td4[(s1 ) & 0xff] ^
969 Td4[(s0 >> 8) & 0xff] << 8 ^
970 Td4[(s3 >> 16) & 0xff] << 16 ^
971 Td4[(s2 >> 24) ] << 24;
972 t[2] = Td4[(s2 ) & 0xff] ^
973 Td4[(s1 >> 8) & 0xff] << 8 ^
974 Td4[(s0 >> 16) & 0xff] << 16 ^
975 Td4[(s3 >> 24) ] << 24;
976 t[3] = Td4[(s3 ) & 0xff] ^
977 Td4[(s2 >> 8) & 0xff] << 8 ^
978 Td4[(s1 >> 16) & 0xff] << 16 ^
979 Td4[(s0 >> 24) ] << 24;
981 /* now do the linear transform using words */
983 u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;
985 for (i = 0; i < 4; i++) {
987 m = tp1 & 0x80808080;
988 tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
989 ((m - (m >> 7)) & 0x1b1b1b1b);
990 m = tp2 & 0x80808080;
991 tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
992 ((m - (m >> 7)) & 0x1b1b1b1b);
993 m = tp4 & 0x80808080;
994 tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
995 ((m - (m >> 7)) & 0x1b1b1b1b);
999 tpe = tp8 ^ tp4 ^ tp2;
1001 t[i] = tpe ^ ROTATE(tpd,16) ^
1002 ROTATE(tp9,8) ^ ROTATE(tpb,24);
1004 t[i] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
1005 (tp9 >> 24) ^ (tp9 << 8) ^
1006 (tpb >> 8) ^ (tpb << 24);
1012 t[0] = Td0[(s0 ) & 0xff] ^
1013 Td1[(s3 >> 8) & 0xff] ^
1014 Td2[(s2 >> 16) & 0xff] ^
1017 t[1] = Td0[(s1 ) & 0xff] ^
1018 Td1[(s0 >> 8) & 0xff] ^
1019 Td2[(s3 >> 16) & 0xff] ^
1022 t[2] = Td0[(s2 ) & 0xff] ^
1023 Td1[(s1 >> 8) & 0xff] ^
1024 Td2[(s0 >> 16) & 0xff] ^
1027 t[3] = Td0[(s3 ) & 0xff] ^
1028 Td1[(s2 >> 8) & 0xff] ^
1029 Td2[(s1 >> 16) & 0xff] ^
1033 s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
1036 * apply last round and
1037 * map cipher state to byte array block:
1042 (Td4[(s0 ) & 0xff]) ^
1043 (Td4[(s3 >> 8) & 0xff] << 8) ^
1044 (Td4[(s2 >> 16) & 0xff] << 16) ^
1045 (Td4[(s1 >> 24) ] << 24) ^
1048 (Td4[(s1 ) & 0xff]) ^
1049 (Td4[(s0 >> 8) & 0xff] << 8) ^
1050 (Td4[(s3 >> 16) & 0xff] << 16) ^
1051 (Td4[(s2 >> 24) ] << 24) ^
1054 (Td4[(s2 ) & 0xff]) ^
1055 (Td4[(s1 >> 8) & 0xff] << 8) ^
1056 (Td4[(s0 >> 16) & 0xff] << 16) ^
1057 (Td4[(s3 >> 24) ] << 24) ^
1060 (Td4[(s3 ) & 0xff]) ^
1061 (Td4[(s2 >> 8) & 0xff] << 8) ^
1062 (Td4[(s1 >> 16) & 0xff] << 16) ^
1063 (Td4[(s0 >> 24) ] << 24) ^