4 * @version 3.0 (December 2000)
6 * Optimised ANSI C code for the Rijndael cipher (now AES)
8 * @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>
9 * @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be>
10 * @author Paulo Barreto <paulo.barreto@terra.com.br>
12 * This code is hereby placed in the public domain.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
15 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
21 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
23 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
24 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * This is experimental x86[_64] derivative. It assumes little-endian
29 * byte order and expects CPU to sustain unaligned memory references.
30 * It is used as playground for cache-time attack mitigations and
31 * serves as reference C implementation for x86[_64] assembler.
33 * <appro@fy.chalmers.se>
40 #include <openssl/aes.h>
44 * These two parameters control which table, 256-byte or 2KB, is
45 * referenced in outer and respectively inner rounds.
47 #define AES_COMPACT_IN_OUTER_ROUNDS
48 #ifdef AES_COMPACT_IN_OUTER_ROUNDS
49 /* AES_COMPACT_IN_OUTER_ROUNDS costs ~30% in performance, while
50 * adding AES_COMPACT_IN_INNER_ROUNDS reduces benchmark *further*
52 # undef AES_COMPACT_IN_INNER_ROUNDS
56 static void prefetch256(const void *table)
58 volatile unsigned long *t=(void *)table,ret;
62 /* 32 is common least cache-line size */
63 for (sum=0,i=0;i<256/sizeof(t[0]);i+=32/sizeof(t[0])) sum ^= t[i];
68 # define prefetch256(t)
72 #define GETU32(p) (*((u32*)(p)))
74 #if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
75 typedef unsigned __int64 u64;
76 #define U64(C) C##UI64
77 #elif defined(__arch64__)
78 typedef unsigned long u64;
81 typedef unsigned long long u64;
87 # define ROTATE(a,n) _lrotl(a,n)
89 # define ROTATE(a,n) _rotl(a,n)
90 #elif defined(__GNUC__) && __GNUC__>=2
91 # if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
92 # define ROTATE(a,n) ({ register unsigned int ret; \
103 Te [x] = S [x].[02, 01, 01, 03, 02, 01, 01, 03];
104 Te0[x] = S [x].[02, 01, 01, 03];
105 Te1[x] = S [x].[03, 02, 01, 01];
106 Te2[x] = S [x].[01, 03, 02, 01];
107 Te3[x] = S [x].[01, 01, 03, 02];
109 #define Te0 (u32)((u64*)((u8*)Te+0))
110 #define Te1 (u32)((u64*)((u8*)Te+3))
111 #define Te2 (u32)((u64*)((u8*)Te+2))
112 #define Te3 (u32)((u64*)((u8*)Te+1))
114 Td [x] = Si[x].[0e, 09, 0d, 0b, 0e, 09, 0d, 0b];
115 Td0[x] = Si[x].[0e, 09, 0d, 0b];
116 Td1[x] = Si[x].[0b, 0e, 09, 0d];
117 Td2[x] = Si[x].[0d, 0b, 0e, 09];
118 Td3[x] = Si[x].[09, 0d, 0b, 0e];
121 #define Td0 (u32)((u64*)((u8*)Td+0))
122 #define Td1 (u32)((u64*)((u8*)Td+3))
123 #define Td2 (u32)((u64*)((u8*)Td+2))
124 #define Td3 (u32)((u64*)((u8*)Td+1))
126 static const u64 Te[256] = {
127 U64(0xa56363c6a56363c6), U64(0x847c7cf8847c7cf8),
128 U64(0x997777ee997777ee), U64(0x8d7b7bf68d7b7bf6),
129 U64(0x0df2f2ff0df2f2ff), U64(0xbd6b6bd6bd6b6bd6),
130 U64(0xb16f6fdeb16f6fde), U64(0x54c5c59154c5c591),
131 U64(0x5030306050303060), U64(0x0301010203010102),
132 U64(0xa96767cea96767ce), U64(0x7d2b2b567d2b2b56),
133 U64(0x19fefee719fefee7), U64(0x62d7d7b562d7d7b5),
134 U64(0xe6abab4de6abab4d), U64(0x9a7676ec9a7676ec),
135 U64(0x45caca8f45caca8f), U64(0x9d82821f9d82821f),
136 U64(0x40c9c98940c9c989), U64(0x877d7dfa877d7dfa),
137 U64(0x15fafaef15fafaef), U64(0xeb5959b2eb5959b2),
138 U64(0xc947478ec947478e), U64(0x0bf0f0fb0bf0f0fb),
139 U64(0xecadad41ecadad41), U64(0x67d4d4b367d4d4b3),
140 U64(0xfda2a25ffda2a25f), U64(0xeaafaf45eaafaf45),
141 U64(0xbf9c9c23bf9c9c23), U64(0xf7a4a453f7a4a453),
142 U64(0x967272e4967272e4), U64(0x5bc0c09b5bc0c09b),
143 U64(0xc2b7b775c2b7b775), U64(0x1cfdfde11cfdfde1),
144 U64(0xae93933dae93933d), U64(0x6a26264c6a26264c),
145 U64(0x5a36366c5a36366c), U64(0x413f3f7e413f3f7e),
146 U64(0x02f7f7f502f7f7f5), U64(0x4fcccc834fcccc83),
147 U64(0x5c3434685c343468), U64(0xf4a5a551f4a5a551),
148 U64(0x34e5e5d134e5e5d1), U64(0x08f1f1f908f1f1f9),
149 U64(0x937171e2937171e2), U64(0x73d8d8ab73d8d8ab),
150 U64(0x5331316253313162), U64(0x3f15152a3f15152a),
151 U64(0x0c0404080c040408), U64(0x52c7c79552c7c795),
152 U64(0x6523234665232346), U64(0x5ec3c39d5ec3c39d),
153 U64(0x2818183028181830), U64(0xa1969637a1969637),
154 U64(0x0f05050a0f05050a), U64(0xb59a9a2fb59a9a2f),
155 U64(0x0907070e0907070e), U64(0x3612122436121224),
156 U64(0x9b80801b9b80801b), U64(0x3de2e2df3de2e2df),
157 U64(0x26ebebcd26ebebcd), U64(0x6927274e6927274e),
158 U64(0xcdb2b27fcdb2b27f), U64(0x9f7575ea9f7575ea),
159 U64(0x1b0909121b090912), U64(0x9e83831d9e83831d),
160 U64(0x742c2c58742c2c58), U64(0x2e1a1a342e1a1a34),
161 U64(0x2d1b1b362d1b1b36), U64(0xb26e6edcb26e6edc),
162 U64(0xee5a5ab4ee5a5ab4), U64(0xfba0a05bfba0a05b),
163 U64(0xf65252a4f65252a4), U64(0x4d3b3b764d3b3b76),
164 U64(0x61d6d6b761d6d6b7), U64(0xceb3b37dceb3b37d),
165 U64(0x7b2929527b292952), U64(0x3ee3e3dd3ee3e3dd),
166 U64(0x712f2f5e712f2f5e), U64(0x9784841397848413),
167 U64(0xf55353a6f55353a6), U64(0x68d1d1b968d1d1b9),
168 U64(0x0000000000000000), U64(0x2cededc12cededc1),
169 U64(0x6020204060202040), U64(0x1ffcfce31ffcfce3),
170 U64(0xc8b1b179c8b1b179), U64(0xed5b5bb6ed5b5bb6),
171 U64(0xbe6a6ad4be6a6ad4), U64(0x46cbcb8d46cbcb8d),
172 U64(0xd9bebe67d9bebe67), U64(0x4b3939724b393972),
173 U64(0xde4a4a94de4a4a94), U64(0xd44c4c98d44c4c98),
174 U64(0xe85858b0e85858b0), U64(0x4acfcf854acfcf85),
175 U64(0x6bd0d0bb6bd0d0bb), U64(0x2aefefc52aefefc5),
176 U64(0xe5aaaa4fe5aaaa4f), U64(0x16fbfbed16fbfbed),
177 U64(0xc5434386c5434386), U64(0xd74d4d9ad74d4d9a),
178 U64(0x5533336655333366), U64(0x9485851194858511),
179 U64(0xcf45458acf45458a), U64(0x10f9f9e910f9f9e9),
180 U64(0x0602020406020204), U64(0x817f7ffe817f7ffe),
181 U64(0xf05050a0f05050a0), U64(0x443c3c78443c3c78),
182 U64(0xba9f9f25ba9f9f25), U64(0xe3a8a84be3a8a84b),
183 U64(0xf35151a2f35151a2), U64(0xfea3a35dfea3a35d),
184 U64(0xc0404080c0404080), U64(0x8a8f8f058a8f8f05),
185 U64(0xad92923fad92923f), U64(0xbc9d9d21bc9d9d21),
186 U64(0x4838387048383870), U64(0x04f5f5f104f5f5f1),
187 U64(0xdfbcbc63dfbcbc63), U64(0xc1b6b677c1b6b677),
188 U64(0x75dadaaf75dadaaf), U64(0x6321214263212142),
189 U64(0x3010102030101020), U64(0x1affffe51affffe5),
190 U64(0x0ef3f3fd0ef3f3fd), U64(0x6dd2d2bf6dd2d2bf),
191 U64(0x4ccdcd814ccdcd81), U64(0x140c0c18140c0c18),
192 U64(0x3513132635131326), U64(0x2fececc32fececc3),
193 U64(0xe15f5fbee15f5fbe), U64(0xa2979735a2979735),
194 U64(0xcc444488cc444488), U64(0x3917172e3917172e),
195 U64(0x57c4c49357c4c493), U64(0xf2a7a755f2a7a755),
196 U64(0x827e7efc827e7efc), U64(0x473d3d7a473d3d7a),
197 U64(0xac6464c8ac6464c8), U64(0xe75d5dbae75d5dba),
198 U64(0x2b1919322b191932), U64(0x957373e6957373e6),
199 U64(0xa06060c0a06060c0), U64(0x9881811998818119),
200 U64(0xd14f4f9ed14f4f9e), U64(0x7fdcdca37fdcdca3),
201 U64(0x6622224466222244), U64(0x7e2a2a547e2a2a54),
202 U64(0xab90903bab90903b), U64(0x8388880b8388880b),
203 U64(0xca46468cca46468c), U64(0x29eeeec729eeeec7),
204 U64(0xd3b8b86bd3b8b86b), U64(0x3c1414283c141428),
205 U64(0x79dedea779dedea7), U64(0xe25e5ebce25e5ebc),
206 U64(0x1d0b0b161d0b0b16), U64(0x76dbdbad76dbdbad),
207 U64(0x3be0e0db3be0e0db), U64(0x5632326456323264),
208 U64(0x4e3a3a744e3a3a74), U64(0x1e0a0a141e0a0a14),
209 U64(0xdb494992db494992), U64(0x0a06060c0a06060c),
210 U64(0x6c2424486c242448), U64(0xe45c5cb8e45c5cb8),
211 U64(0x5dc2c29f5dc2c29f), U64(0x6ed3d3bd6ed3d3bd),
212 U64(0xefacac43efacac43), U64(0xa66262c4a66262c4),
213 U64(0xa8919139a8919139), U64(0xa4959531a4959531),
214 U64(0x37e4e4d337e4e4d3), U64(0x8b7979f28b7979f2),
215 U64(0x32e7e7d532e7e7d5), U64(0x43c8c88b43c8c88b),
216 U64(0x5937376e5937376e), U64(0xb76d6ddab76d6dda),
217 U64(0x8c8d8d018c8d8d01), U64(0x64d5d5b164d5d5b1),
218 U64(0xd24e4e9cd24e4e9c), U64(0xe0a9a949e0a9a949),
219 U64(0xb46c6cd8b46c6cd8), U64(0xfa5656acfa5656ac),
220 U64(0x07f4f4f307f4f4f3), U64(0x25eaeacf25eaeacf),
221 U64(0xaf6565caaf6565ca), U64(0x8e7a7af48e7a7af4),
222 U64(0xe9aeae47e9aeae47), U64(0x1808081018080810),
223 U64(0xd5baba6fd5baba6f), U64(0x887878f0887878f0),
224 U64(0x6f25254a6f25254a), U64(0x722e2e5c722e2e5c),
225 U64(0x241c1c38241c1c38), U64(0xf1a6a657f1a6a657),
226 U64(0xc7b4b473c7b4b473), U64(0x51c6c69751c6c697),
227 U64(0x23e8e8cb23e8e8cb), U64(0x7cdddda17cdddda1),
228 U64(0x9c7474e89c7474e8), U64(0x211f1f3e211f1f3e),
229 U64(0xdd4b4b96dd4b4b96), U64(0xdcbdbd61dcbdbd61),
230 U64(0x868b8b0d868b8b0d), U64(0x858a8a0f858a8a0f),
231 U64(0x907070e0907070e0), U64(0x423e3e7c423e3e7c),
232 U64(0xc4b5b571c4b5b571), U64(0xaa6666ccaa6666cc),
233 U64(0xd8484890d8484890), U64(0x0503030605030306),
234 U64(0x01f6f6f701f6f6f7), U64(0x120e0e1c120e0e1c),
235 U64(0xa36161c2a36161c2), U64(0x5f35356a5f35356a),
236 U64(0xf95757aef95757ae), U64(0xd0b9b969d0b9b969),
237 U64(0x9186861791868617), U64(0x58c1c19958c1c199),
238 U64(0x271d1d3a271d1d3a), U64(0xb99e9e27b99e9e27),
239 U64(0x38e1e1d938e1e1d9), U64(0x13f8f8eb13f8f8eb),
240 U64(0xb398982bb398982b), U64(0x3311112233111122),
241 U64(0xbb6969d2bb6969d2), U64(0x70d9d9a970d9d9a9),
242 U64(0x898e8e07898e8e07), U64(0xa7949433a7949433),
243 U64(0xb69b9b2db69b9b2d), U64(0x221e1e3c221e1e3c),
244 U64(0x9287871592878715), U64(0x20e9e9c920e9e9c9),
245 U64(0x49cece8749cece87), U64(0xff5555aaff5555aa),
246 U64(0x7828285078282850), U64(0x7adfdfa57adfdfa5),
247 U64(0x8f8c8c038f8c8c03), U64(0xf8a1a159f8a1a159),
248 U64(0x8089890980898909), U64(0x170d0d1a170d0d1a),
249 U64(0xdabfbf65dabfbf65), U64(0x31e6e6d731e6e6d7),
250 U64(0xc6424284c6424284), U64(0xb86868d0b86868d0),
251 U64(0xc3414182c3414182), U64(0xb0999929b0999929),
252 U64(0x772d2d5a772d2d5a), U64(0x110f0f1e110f0f1e),
253 U64(0xcbb0b07bcbb0b07b), U64(0xfc5454a8fc5454a8),
254 U64(0xd6bbbb6dd6bbbb6d), U64(0x3a16162c3a16162c)
257 static const u8 Te4[256] = {
258 0x63U, 0x7cU, 0x77U, 0x7bU, 0xf2U, 0x6bU, 0x6fU, 0xc5U,
259 0x30U, 0x01U, 0x67U, 0x2bU, 0xfeU, 0xd7U, 0xabU, 0x76U,
260 0xcaU, 0x82U, 0xc9U, 0x7dU, 0xfaU, 0x59U, 0x47U, 0xf0U,
261 0xadU, 0xd4U, 0xa2U, 0xafU, 0x9cU, 0xa4U, 0x72U, 0xc0U,
262 0xb7U, 0xfdU, 0x93U, 0x26U, 0x36U, 0x3fU, 0xf7U, 0xccU,
263 0x34U, 0xa5U, 0xe5U, 0xf1U, 0x71U, 0xd8U, 0x31U, 0x15U,
264 0x04U, 0xc7U, 0x23U, 0xc3U, 0x18U, 0x96U, 0x05U, 0x9aU,
265 0x07U, 0x12U, 0x80U, 0xe2U, 0xebU, 0x27U, 0xb2U, 0x75U,
266 0x09U, 0x83U, 0x2cU, 0x1aU, 0x1bU, 0x6eU, 0x5aU, 0xa0U,
267 0x52U, 0x3bU, 0xd6U, 0xb3U, 0x29U, 0xe3U, 0x2fU, 0x84U,
268 0x53U, 0xd1U, 0x00U, 0xedU, 0x20U, 0xfcU, 0xb1U, 0x5bU,
269 0x6aU, 0xcbU, 0xbeU, 0x39U, 0x4aU, 0x4cU, 0x58U, 0xcfU,
270 0xd0U, 0xefU, 0xaaU, 0xfbU, 0x43U, 0x4dU, 0x33U, 0x85U,
271 0x45U, 0xf9U, 0x02U, 0x7fU, 0x50U, 0x3cU, 0x9fU, 0xa8U,
272 0x51U, 0xa3U, 0x40U, 0x8fU, 0x92U, 0x9dU, 0x38U, 0xf5U,
273 0xbcU, 0xb6U, 0xdaU, 0x21U, 0x10U, 0xffU, 0xf3U, 0xd2U,
274 0xcdU, 0x0cU, 0x13U, 0xecU, 0x5fU, 0x97U, 0x44U, 0x17U,
275 0xc4U, 0xa7U, 0x7eU, 0x3dU, 0x64U, 0x5dU, 0x19U, 0x73U,
276 0x60U, 0x81U, 0x4fU, 0xdcU, 0x22U, 0x2aU, 0x90U, 0x88U,
277 0x46U, 0xeeU, 0xb8U, 0x14U, 0xdeU, 0x5eU, 0x0bU, 0xdbU,
278 0xe0U, 0x32U, 0x3aU, 0x0aU, 0x49U, 0x06U, 0x24U, 0x5cU,
279 0xc2U, 0xd3U, 0xacU, 0x62U, 0x91U, 0x95U, 0xe4U, 0x79U,
280 0xe7U, 0xc8U, 0x37U, 0x6dU, 0x8dU, 0xd5U, 0x4eU, 0xa9U,
281 0x6cU, 0x56U, 0xf4U, 0xeaU, 0x65U, 0x7aU, 0xaeU, 0x08U,
282 0xbaU, 0x78U, 0x25U, 0x2eU, 0x1cU, 0xa6U, 0xb4U, 0xc6U,
283 0xe8U, 0xddU, 0x74U, 0x1fU, 0x4bU, 0xbdU, 0x8bU, 0x8aU,
284 0x70U, 0x3eU, 0xb5U, 0x66U, 0x48U, 0x03U, 0xf6U, 0x0eU,
285 0x61U, 0x35U, 0x57U, 0xb9U, 0x86U, 0xc1U, 0x1dU, 0x9eU,
286 0xe1U, 0xf8U, 0x98U, 0x11U, 0x69U, 0xd9U, 0x8eU, 0x94U,
287 0x9bU, 0x1eU, 0x87U, 0xe9U, 0xceU, 0x55U, 0x28U, 0xdfU,
288 0x8cU, 0xa1U, 0x89U, 0x0dU, 0xbfU, 0xe6U, 0x42U, 0x68U,
289 0x41U, 0x99U, 0x2dU, 0x0fU, 0xb0U, 0x54U, 0xbbU, 0x16U
292 static const u64 Td[256] = {
293 U64(0x50a7f45150a7f451), U64(0x5365417e5365417e),
294 U64(0xc3a4171ac3a4171a), U64(0x965e273a965e273a),
295 U64(0xcb6bab3bcb6bab3b), U64(0xf1459d1ff1459d1f),
296 U64(0xab58faacab58faac), U64(0x9303e34b9303e34b),
297 U64(0x55fa302055fa3020), U64(0xf66d76adf66d76ad),
298 U64(0x9176cc889176cc88), U64(0x254c02f5254c02f5),
299 U64(0xfcd7e54ffcd7e54f), U64(0xd7cb2ac5d7cb2ac5),
300 U64(0x8044352680443526), U64(0x8fa362b58fa362b5),
301 U64(0x495ab1de495ab1de), U64(0x671bba25671bba25),
302 U64(0x980eea45980eea45), U64(0xe1c0fe5de1c0fe5d),
303 U64(0x02752fc302752fc3), U64(0x12f04c8112f04c81),
304 U64(0xa397468da397468d), U64(0xc6f9d36bc6f9d36b),
305 U64(0xe75f8f03e75f8f03), U64(0x959c9215959c9215),
306 U64(0xeb7a6dbfeb7a6dbf), U64(0xda595295da595295),
307 U64(0x2d83bed42d83bed4), U64(0xd3217458d3217458),
308 U64(0x2969e0492969e049), U64(0x44c8c98e44c8c98e),
309 U64(0x6a89c2756a89c275), U64(0x78798ef478798ef4),
310 U64(0x6b3e58996b3e5899), U64(0xdd71b927dd71b927),
311 U64(0xb64fe1beb64fe1be), U64(0x17ad88f017ad88f0),
312 U64(0x66ac20c966ac20c9), U64(0xb43ace7db43ace7d),
313 U64(0x184adf63184adf63), U64(0x82311ae582311ae5),
314 U64(0x6033519760335197), U64(0x457f5362457f5362),
315 U64(0xe07764b1e07764b1), U64(0x84ae6bbb84ae6bbb),
316 U64(0x1ca081fe1ca081fe), U64(0x942b08f9942b08f9),
317 U64(0x5868487058684870), U64(0x19fd458f19fd458f),
318 U64(0x876cde94876cde94), U64(0xb7f87b52b7f87b52),
319 U64(0x23d373ab23d373ab), U64(0xe2024b72e2024b72),
320 U64(0x578f1fe3578f1fe3), U64(0x2aab55662aab5566),
321 U64(0x0728ebb20728ebb2), U64(0x03c2b52f03c2b52f),
322 U64(0x9a7bc5869a7bc586), U64(0xa50837d3a50837d3),
323 U64(0xf2872830f2872830), U64(0xb2a5bf23b2a5bf23),
324 U64(0xba6a0302ba6a0302), U64(0x5c8216ed5c8216ed),
325 U64(0x2b1ccf8a2b1ccf8a), U64(0x92b479a792b479a7),
326 U64(0xf0f207f3f0f207f3), U64(0xa1e2694ea1e2694e),
327 U64(0xcdf4da65cdf4da65), U64(0xd5be0506d5be0506),
328 U64(0x1f6234d11f6234d1), U64(0x8afea6c48afea6c4),
329 U64(0x9d532e349d532e34), U64(0xa055f3a2a055f3a2),
330 U64(0x32e18a0532e18a05), U64(0x75ebf6a475ebf6a4),
331 U64(0x39ec830b39ec830b), U64(0xaaef6040aaef6040),
332 U64(0x069f715e069f715e), U64(0x51106ebd51106ebd),
333 U64(0xf98a213ef98a213e), U64(0x3d06dd963d06dd96),
334 U64(0xae053eddae053edd), U64(0x46bde64d46bde64d),
335 U64(0xb58d5491b58d5491), U64(0x055dc471055dc471),
336 U64(0x6fd406046fd40604), U64(0xff155060ff155060),
337 U64(0x24fb981924fb9819), U64(0x97e9bdd697e9bdd6),
338 U64(0xcc434089cc434089), U64(0x779ed967779ed967),
339 U64(0xbd42e8b0bd42e8b0), U64(0x888b8907888b8907),
340 U64(0x385b19e7385b19e7), U64(0xdbeec879dbeec879),
341 U64(0x470a7ca1470a7ca1), U64(0xe90f427ce90f427c),
342 U64(0xc91e84f8c91e84f8), U64(0x0000000000000000),
343 U64(0x8386800983868009), U64(0x48ed2b3248ed2b32),
344 U64(0xac70111eac70111e), U64(0x4e725a6c4e725a6c),
345 U64(0xfbff0efdfbff0efd), U64(0x5638850f5638850f),
346 U64(0x1ed5ae3d1ed5ae3d), U64(0x27392d3627392d36),
347 U64(0x64d90f0a64d90f0a), U64(0x21a65c6821a65c68),
348 U64(0xd1545b9bd1545b9b), U64(0x3a2e36243a2e3624),
349 U64(0xb1670a0cb1670a0c), U64(0x0fe757930fe75793),
350 U64(0xd296eeb4d296eeb4), U64(0x9e919b1b9e919b1b),
351 U64(0x4fc5c0804fc5c080), U64(0xa220dc61a220dc61),
352 U64(0x694b775a694b775a), U64(0x161a121c161a121c),
353 U64(0x0aba93e20aba93e2), U64(0xe52aa0c0e52aa0c0),
354 U64(0x43e0223c43e0223c), U64(0x1d171b121d171b12),
355 U64(0x0b0d090e0b0d090e), U64(0xadc78bf2adc78bf2),
356 U64(0xb9a8b62db9a8b62d), U64(0xc8a91e14c8a91e14),
357 U64(0x8519f1578519f157), U64(0x4c0775af4c0775af),
358 U64(0xbbdd99eebbdd99ee), U64(0xfd607fa3fd607fa3),
359 U64(0x9f2601f79f2601f7), U64(0xbcf5725cbcf5725c),
360 U64(0xc53b6644c53b6644), U64(0x347efb5b347efb5b),
361 U64(0x7629438b7629438b), U64(0xdcc623cbdcc623cb),
362 U64(0x68fcedb668fcedb6), U64(0x63f1e4b863f1e4b8),
363 U64(0xcadc31d7cadc31d7), U64(0x1085634210856342),
364 U64(0x4022971340229713), U64(0x2011c6842011c684),
365 U64(0x7d244a857d244a85), U64(0xf83dbbd2f83dbbd2),
366 U64(0x1132f9ae1132f9ae), U64(0x6da129c76da129c7),
367 U64(0x4b2f9e1d4b2f9e1d), U64(0xf330b2dcf330b2dc),
368 U64(0xec52860dec52860d), U64(0xd0e3c177d0e3c177),
369 U64(0x6c16b32b6c16b32b), U64(0x99b970a999b970a9),
370 U64(0xfa489411fa489411), U64(0x2264e9472264e947),
371 U64(0xc48cfca8c48cfca8), U64(0x1a3ff0a01a3ff0a0),
372 U64(0xd82c7d56d82c7d56), U64(0xef903322ef903322),
373 U64(0xc74e4987c74e4987), U64(0xc1d138d9c1d138d9),
374 U64(0xfea2ca8cfea2ca8c), U64(0x360bd498360bd498),
375 U64(0xcf81f5a6cf81f5a6), U64(0x28de7aa528de7aa5),
376 U64(0x268eb7da268eb7da), U64(0xa4bfad3fa4bfad3f),
377 U64(0xe49d3a2ce49d3a2c), U64(0x0d9278500d927850),
378 U64(0x9bcc5f6a9bcc5f6a), U64(0x62467e5462467e54),
379 U64(0xc2138df6c2138df6), U64(0xe8b8d890e8b8d890),
380 U64(0x5ef7392e5ef7392e), U64(0xf5afc382f5afc382),
381 U64(0xbe805d9fbe805d9f), U64(0x7c93d0697c93d069),
382 U64(0xa92dd56fa92dd56f), U64(0xb31225cfb31225cf),
383 U64(0x3b99acc83b99acc8), U64(0xa77d1810a77d1810),
384 U64(0x6e639ce86e639ce8), U64(0x7bbb3bdb7bbb3bdb),
385 U64(0x097826cd097826cd), U64(0xf418596ef418596e),
386 U64(0x01b79aec01b79aec), U64(0xa89a4f83a89a4f83),
387 U64(0x656e95e6656e95e6), U64(0x7ee6ffaa7ee6ffaa),
388 U64(0x08cfbc2108cfbc21), U64(0xe6e815efe6e815ef),
389 U64(0xd99be7bad99be7ba), U64(0xce366f4ace366f4a),
390 U64(0xd4099fead4099fea), U64(0xd67cb029d67cb029),
391 U64(0xafb2a431afb2a431), U64(0x31233f2a31233f2a),
392 U64(0x3094a5c63094a5c6), U64(0xc066a235c066a235),
393 U64(0x37bc4e7437bc4e74), U64(0xa6ca82fca6ca82fc),
394 U64(0xb0d090e0b0d090e0), U64(0x15d8a73315d8a733),
395 U64(0x4a9804f14a9804f1), U64(0xf7daec41f7daec41),
396 U64(0x0e50cd7f0e50cd7f), U64(0x2ff691172ff69117),
397 U64(0x8dd64d768dd64d76), U64(0x4db0ef434db0ef43),
398 U64(0x544daacc544daacc), U64(0xdf0496e4df0496e4),
399 U64(0xe3b5d19ee3b5d19e), U64(0x1b886a4c1b886a4c),
400 U64(0xb81f2cc1b81f2cc1), U64(0x7f5165467f516546),
401 U64(0x04ea5e9d04ea5e9d), U64(0x5d358c015d358c01),
402 U64(0x737487fa737487fa), U64(0x2e410bfb2e410bfb),
403 U64(0x5a1d67b35a1d67b3), U64(0x52d2db9252d2db92),
404 U64(0x335610e9335610e9), U64(0x1347d66d1347d66d),
405 U64(0x8c61d79a8c61d79a), U64(0x7a0ca1377a0ca137),
406 U64(0x8e14f8598e14f859), U64(0x893c13eb893c13eb),
407 U64(0xee27a9ceee27a9ce), U64(0x35c961b735c961b7),
408 U64(0xede51ce1ede51ce1), U64(0x3cb1477a3cb1477a),
409 U64(0x59dfd29c59dfd29c), U64(0x3f73f2553f73f255),
410 U64(0x79ce141879ce1418), U64(0xbf37c773bf37c773),
411 U64(0xeacdf753eacdf753), U64(0x5baafd5f5baafd5f),
412 U64(0x146f3ddf146f3ddf), U64(0x86db447886db4478),
413 U64(0x81f3afca81f3afca), U64(0x3ec468b93ec468b9),
414 U64(0x2c3424382c342438), U64(0x5f40a3c25f40a3c2),
415 U64(0x72c31d1672c31d16), U64(0x0c25e2bc0c25e2bc),
416 U64(0x8b493c288b493c28), U64(0x41950dff41950dff),
417 U64(0x7101a8397101a839), U64(0xdeb30c08deb30c08),
418 U64(0x9ce4b4d89ce4b4d8), U64(0x90c1566490c15664),
419 U64(0x6184cb7b6184cb7b), U64(0x70b632d570b632d5),
420 U64(0x745c6c48745c6c48), U64(0x4257b8d04257b8d0)
422 static const u8 Td4[256] = {
423 0x52U, 0x09U, 0x6aU, 0xd5U, 0x30U, 0x36U, 0xa5U, 0x38U,
424 0xbfU, 0x40U, 0xa3U, 0x9eU, 0x81U, 0xf3U, 0xd7U, 0xfbU,
425 0x7cU, 0xe3U, 0x39U, 0x82U, 0x9bU, 0x2fU, 0xffU, 0x87U,
426 0x34U, 0x8eU, 0x43U, 0x44U, 0xc4U, 0xdeU, 0xe9U, 0xcbU,
427 0x54U, 0x7bU, 0x94U, 0x32U, 0xa6U, 0xc2U, 0x23U, 0x3dU,
428 0xeeU, 0x4cU, 0x95U, 0x0bU, 0x42U, 0xfaU, 0xc3U, 0x4eU,
429 0x08U, 0x2eU, 0xa1U, 0x66U, 0x28U, 0xd9U, 0x24U, 0xb2U,
430 0x76U, 0x5bU, 0xa2U, 0x49U, 0x6dU, 0x8bU, 0xd1U, 0x25U,
431 0x72U, 0xf8U, 0xf6U, 0x64U, 0x86U, 0x68U, 0x98U, 0x16U,
432 0xd4U, 0xa4U, 0x5cU, 0xccU, 0x5dU, 0x65U, 0xb6U, 0x92U,
433 0x6cU, 0x70U, 0x48U, 0x50U, 0xfdU, 0xedU, 0xb9U, 0xdaU,
434 0x5eU, 0x15U, 0x46U, 0x57U, 0xa7U, 0x8dU, 0x9dU, 0x84U,
435 0x90U, 0xd8U, 0xabU, 0x00U, 0x8cU, 0xbcU, 0xd3U, 0x0aU,
436 0xf7U, 0xe4U, 0x58U, 0x05U, 0xb8U, 0xb3U, 0x45U, 0x06U,
437 0xd0U, 0x2cU, 0x1eU, 0x8fU, 0xcaU, 0x3fU, 0x0fU, 0x02U,
438 0xc1U, 0xafU, 0xbdU, 0x03U, 0x01U, 0x13U, 0x8aU, 0x6bU,
439 0x3aU, 0x91U, 0x11U, 0x41U, 0x4fU, 0x67U, 0xdcU, 0xeaU,
440 0x97U, 0xf2U, 0xcfU, 0xceU, 0xf0U, 0xb4U, 0xe6U, 0x73U,
441 0x96U, 0xacU, 0x74U, 0x22U, 0xe7U, 0xadU, 0x35U, 0x85U,
442 0xe2U, 0xf9U, 0x37U, 0xe8U, 0x1cU, 0x75U, 0xdfU, 0x6eU,
443 0x47U, 0xf1U, 0x1aU, 0x71U, 0x1dU, 0x29U, 0xc5U, 0x89U,
444 0x6fU, 0xb7U, 0x62U, 0x0eU, 0xaaU, 0x18U, 0xbeU, 0x1bU,
445 0xfcU, 0x56U, 0x3eU, 0x4bU, 0xc6U, 0xd2U, 0x79U, 0x20U,
446 0x9aU, 0xdbU, 0xc0U, 0xfeU, 0x78U, 0xcdU, 0x5aU, 0xf4U,
447 0x1fU, 0xddU, 0xa8U, 0x33U, 0x88U, 0x07U, 0xc7U, 0x31U,
448 0xb1U, 0x12U, 0x10U, 0x59U, 0x27U, 0x80U, 0xecU, 0x5fU,
449 0x60U, 0x51U, 0x7fU, 0xa9U, 0x19U, 0xb5U, 0x4aU, 0x0dU,
450 0x2dU, 0xe5U, 0x7aU, 0x9fU, 0x93U, 0xc9U, 0x9cU, 0xefU,
451 0xa0U, 0xe0U, 0x3bU, 0x4dU, 0xaeU, 0x2aU, 0xf5U, 0xb0U,
452 0xc8U, 0xebU, 0xbbU, 0x3cU, 0x83U, 0x53U, 0x99U, 0x61U,
453 0x17U, 0x2bU, 0x04U, 0x7eU, 0xbaU, 0x77U, 0xd6U, 0x26U,
454 0xe1U, 0x69U, 0x14U, 0x63U, 0x55U, 0x21U, 0x0cU, 0x7dU
457 static const u32 rcon[] = {
458 0x00000001U, 0x00000002U, 0x00000004U, 0x00000008U,
459 0x00000010U, 0x00000020U, 0x00000040U, 0x00000080U,
460 0x0000001bU, 0x00000036U, /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */
464 * Expand the cipher key into the encryption key schedule.
466 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
474 if (!userKey || !key)
476 if (bits != 128 && bits != 192 && bits != 256)
488 rk[0] = GETU32(userKey );
489 rk[1] = GETU32(userKey + 4);
490 rk[2] = GETU32(userKey + 8);
491 rk[3] = GETU32(userKey + 12);
496 ((u32)Te4[(temp >> 8) & 0xff] ) ^
497 ((u32)Te4[(temp >> 16) & 0xff] << 8) ^
498 ((u32)Te4[(temp >> 24) ] << 16) ^
499 ((u32)Te4[(temp ) & 0xff] << 24) ^
501 rk[5] = rk[1] ^ rk[4];
502 rk[6] = rk[2] ^ rk[5];
503 rk[7] = rk[3] ^ rk[6];
510 rk[4] = GETU32(userKey + 16);
511 rk[5] = GETU32(userKey + 20);
516 ((u32)Te4[(temp >> 8) & 0xff] ) ^
517 ((u32)Te4[(temp >> 16) & 0xff] << 8) ^
518 ((u32)Te4[(temp >> 24) ] << 16) ^
519 ((u32)Te4[(temp ) & 0xff] << 24) ^
521 rk[ 7] = rk[ 1] ^ rk[ 6];
522 rk[ 8] = rk[ 2] ^ rk[ 7];
523 rk[ 9] = rk[ 3] ^ rk[ 8];
527 rk[10] = rk[ 4] ^ rk[ 9];
528 rk[11] = rk[ 5] ^ rk[10];
532 rk[6] = GETU32(userKey + 24);
533 rk[7] = GETU32(userKey + 28);
538 ((u32)Te4[(temp >> 8) & 0xff] ) ^
539 ((u32)Te4[(temp >> 16) & 0xff] << 8) ^
540 ((u32)Te4[(temp >> 24) ] << 16) ^
541 ((u32)Te4[(temp ) & 0xff] << 24) ^
543 rk[ 9] = rk[ 1] ^ rk[ 8];
544 rk[10] = rk[ 2] ^ rk[ 9];
545 rk[11] = rk[ 3] ^ rk[10];
551 ((u32)Te4[(temp ) & 0xff] ) ^
552 ((u32)Te4[(temp >> 8) & 0xff] << 8) ^
553 ((u32)Te4[(temp >> 16) & 0xff] << 16) ^
554 ((u32)Te4[(temp >> 24) ] << 24);
555 rk[13] = rk[ 5] ^ rk[12];
556 rk[14] = rk[ 6] ^ rk[13];
557 rk[15] = rk[ 7] ^ rk[14];
566 * Expand the cipher key into the decryption key schedule.
568 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
576 /* first, start with an encryption schedule */
577 status = AES_set_encrypt_key(userKey, bits, key);
583 /* invert the order of the round keys: */
584 for (i = 0, j = 4*(key->rounds); i < j; i += 4, j -= 4) {
585 temp = rk[i ]; rk[i ] = rk[j ]; rk[j ] = temp;
586 temp = rk[i + 1]; rk[i + 1] = rk[j + 1]; rk[j + 1] = temp;
587 temp = rk[i + 2]; rk[i + 2] = rk[j + 2]; rk[j + 2] = temp;
588 temp = rk[i + 3]; rk[i + 3] = rk[j + 3]; rk[j + 3] = temp;
590 /* apply the inverse MixColumn transform to all round keys but the first and the last: */
591 for (i = 1; i < (key->rounds); i++) {
594 for (j = 0; j < 4; j++) {
595 u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;
598 m = tp1 & 0x80808080;
599 tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
600 ((m - (m >> 7)) & 0x1b1b1b1b);
601 m = tp2 & 0x80808080;
602 tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
603 ((m - (m >> 7)) & 0x1b1b1b1b);
604 m = tp4 & 0x80808080;
605 tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
606 ((m - (m >> 7)) & 0x1b1b1b1b);
610 tpe = tp8 ^ tp4 ^ tp2;
612 rk[j] = tpe ^ ROTATE(tpd,16) ^
613 ROTATE(tp9,8) ^ ROTATE(tpb,24);
615 rk[j] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
616 (tp9 >> 24) ^ (tp9 << 8) ^
617 (tpb >> 8) ^ (tpb << 24);
622 Td0[Te2[(rk[0] ) & 0xff] & 0xff] ^
623 Td1[Te2[(rk[0] >> 8) & 0xff] & 0xff] ^
624 Td2[Te2[(rk[0] >> 16) & 0xff] & 0xff] ^
625 Td3[Te2[(rk[0] >> 24) ] & 0xff];
627 Td0[Te2[(rk[1] ) & 0xff] & 0xff] ^
628 Td1[Te2[(rk[1] >> 8) & 0xff] & 0xff] ^
629 Td2[Te2[(rk[1] >> 16) & 0xff] & 0xff] ^
630 Td3[Te2[(rk[1] >> 24) ] & 0xff];
632 Td0[Te2[(rk[2] ) & 0xff] & 0xff] ^
633 Td1[Te2[(rk[2] >> 8) & 0xff] & 0xff] ^
634 Td2[Te2[(rk[2] >> 16) & 0xff] & 0xff] ^
635 Td3[Te2[(rk[2] >> 24) ] & 0xff];
637 Td0[Te2[(rk[3] ) & 0xff] & 0xff] ^
638 Td1[Te2[(rk[3] >> 8) & 0xff] & 0xff] ^
639 Td2[Te2[(rk[3] >> 16) & 0xff] & 0xff] ^
640 Td3[Te2[(rk[3] >> 24) ] & 0xff];
647 * Encrypt a single block
648 * in and out can overlap
650 void AES_encrypt(const unsigned char *in, unsigned char *out,
655 u32 s0, s1, s2, s3, t[4];
658 assert(in && out && key);
662 * map byte array block to cipher state
663 * and add initial round key:
665 s0 = GETU32(in ) ^ rk[0];
666 s1 = GETU32(in + 4) ^ rk[1];
667 s2 = GETU32(in + 8) ^ rk[2];
668 s3 = GETU32(in + 12) ^ rk[3];
670 #if defined(AES_COMPACT_IN_OUTER_ROUNDS)
673 t[0] = (u32)Te4[(s0 ) & 0xff] ^
674 (u32)Te4[(s1 >> 8) & 0xff] << 8 ^
675 (u32)Te4[(s2 >> 16) & 0xff] << 16 ^
676 (u32)Te4[(s3 >> 24) ] << 24;
677 t[1] = (u32)Te4[(s1 ) & 0xff] ^
678 (u32)Te4[(s2 >> 8) & 0xff] << 8 ^
679 (u32)Te4[(s3 >> 16) & 0xff] << 16 ^
680 (u32)Te4[(s0 >> 24) ] << 24;
681 t[2] = (u32)Te4[(s2 ) & 0xff] ^
682 (u32)Te4[(s3 >> 8) & 0xff] << 8 ^
683 (u32)Te4[(s0 >> 16) & 0xff] << 16 ^
684 (u32)Te4[(s1 >> 24) ] << 24;
685 t[3] = (u32)Te4[(s3 ) & 0xff] ^
686 (u32)Te4[(s0 >> 8) & 0xff] << 8 ^
687 (u32)Te4[(s1 >> 16) & 0xff] << 16 ^
688 (u32)Te4[(s2 >> 24) ] << 24;
690 /* now do the linear transform using words */
694 for (i = 0; i < 4; i++) {
696 r1 = r0 & 0x80808080;
697 r2 = ((r0 & 0x7f7f7f7f) << 1) ^
698 ((r1 - (r1 >> 7)) & 0x1b1b1b1b);
700 t[i] = r2 ^ ROTATE(r2,24) ^ ROTATE(r0,24) ^
701 ROTATE(r0,16) ^ ROTATE(r0,8);
703 t[i] = r2 ^ ((r2 ^ r0) << 24) ^ ((r2 ^ r0) >> 8) ^
704 (r0 << 16) ^ (r0 >> 16) ^
705 (r0 << 8) ^ (r0 >> 24);
711 t[0] = Te0[(s0 ) & 0xff] ^
712 Te1[(s1 >> 8) & 0xff] ^
713 Te2[(s2 >> 16) & 0xff] ^
716 t[1] = Te0[(s1 ) & 0xff] ^
717 Te1[(s2 >> 8) & 0xff] ^
718 Te2[(s3 >> 16) & 0xff] ^
721 t[2] = Te0[(s2 ) & 0xff] ^
722 Te1[(s3 >> 8) & 0xff] ^
723 Te2[(s0 >> 16) & 0xff] ^
726 t[3] = Te0[(s3 ) & 0xff] ^
727 Te1[(s0 >> 8) & 0xff] ^
728 Te2[(s1 >> 16) & 0xff] ^
732 s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
735 * Nr - 2 full rounds:
737 for (rk+=8,r=key->rounds-2; r>0; rk+=4,r--) {
738 #if defined(AES_COMPACT_IN_INNER_ROUNDS)
739 t[0] = (u32)Te4[(s0 ) & 0xff] ^
740 (u32)Te4[(s1 >> 8) & 0xff] << 8 ^
741 (u32)Te4[(s2 >> 16) & 0xff] << 16 ^
742 (u32)Te4[(s3 >> 24) ] << 24;
743 t[1] = (u32)Te4[(s1 ) & 0xff] ^
744 (u32)Te4[(s2 >> 8) & 0xff] << 8 ^
745 (u32)Te4[(s3 >> 16) & 0xff] << 16 ^
746 (u32)Te4[(s0 >> 24) ] << 24;
747 t[2] = (u32)Te4[(s2 ) & 0xff] ^
748 (u32)Te4[(s3 >> 8) & 0xff] << 8 ^
749 (u32)Te4[(s0 >> 16) & 0xff] << 16 ^
750 (u32)Te4[(s1 >> 24) ] << 24;
751 t[3] = (u32)Te4[(s3 ) & 0xff] ^
752 (u32)Te4[(s0 >> 8) & 0xff] << 8 ^
753 (u32)Te4[(s1 >> 16) & 0xff] << 16 ^
754 (u32)Te4[(s2 >> 24) ] << 24;
756 /* now do the linear transform using words */
761 for (i = 0; i < 4; i++) {
763 r1 = r0 & 0x80808080;
764 r2 = ((r0 & 0x7f7f7f7f) << 1) ^
765 ((r1 - (r1 >> 7)) & 0x1b1b1b1b);
767 t[i] = r2 ^ ROTATE(r2,24) ^ ROTATE(r0,24) ^
768 ROTATE(r0,16) ^ ROTATE(r0,8);
770 t[i] = r2 ^ ((r2 ^ r0) << 24) ^ ((r2 ^ r0) >> 8) ^
771 (r0 << 16) ^ (r0 >> 16) ^
772 (r0 << 8) ^ (r0 >> 24);
778 t[0] = Te0[(s0 ) & 0xff] ^
779 Te1[(s1 >> 8) & 0xff] ^
780 Te2[(s2 >> 16) & 0xff] ^
783 t[1] = Te0[(s1 ) & 0xff] ^
784 Te1[(s2 >> 8) & 0xff] ^
785 Te2[(s3 >> 16) & 0xff] ^
788 t[2] = Te0[(s2 ) & 0xff] ^
789 Te1[(s3 >> 8) & 0xff] ^
790 Te2[(s0 >> 16) & 0xff] ^
793 t[3] = Te0[(s3 ) & 0xff] ^
794 Te1[(s0 >> 8) & 0xff] ^
795 Te2[(s1 >> 16) & 0xff] ^
799 s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
802 * apply last round and
803 * map cipher state to byte array block:
805 #if defined(AES_COMPACT_IN_OUTER_ROUNDS)
809 (u32)Te4[(s0 ) & 0xff] ^
810 (u32)Te4[(s1 >> 8) & 0xff] << 8 ^
811 (u32)Te4[(s2 >> 16) & 0xff] << 16 ^
812 (u32)Te4[(s3 >> 24) ] << 24 ^
815 (u32)Te4[(s1 ) & 0xff] ^
816 (u32)Te4[(s2 >> 8) & 0xff] << 8 ^
817 (u32)Te4[(s3 >> 16) & 0xff] << 16 ^
818 (u32)Te4[(s0 >> 24) ] << 24 ^
821 (u32)Te4[(s2 ) & 0xff] ^
822 (u32)Te4[(s3 >> 8) & 0xff] << 8 ^
823 (u32)Te4[(s0 >> 16) & 0xff] << 16 ^
824 (u32)Te4[(s1 >> 24) ] << 24 ^
827 (u32)Te4[(s3 ) & 0xff] ^
828 (u32)Te4[(s0 >> 8) & 0xff] << 8 ^
829 (u32)Te4[(s1 >> 16) & 0xff] << 16 ^
830 (u32)Te4[(s2 >> 24) ] << 24 ^
834 (Te2[(s0 ) & 0xff] & 0x000000ffU) ^
835 (Te3[(s1 >> 8) & 0xff] & 0x0000ff00U) ^
836 (Te0[(s2 >> 16) & 0xff] & 0x00ff0000U) ^
837 (Te1[(s3 >> 24) ] & 0xff000000U) ^
840 (Te2[(s1 ) & 0xff] & 0x000000ffU) ^
841 (Te3[(s2 >> 8) & 0xff] & 0x0000ff00U) ^
842 (Te0[(s3 >> 16) & 0xff] & 0x00ff0000U) ^
843 (Te1[(s0 >> 24) ] & 0xff000000U) ^
846 (Te2[(s2 ) & 0xff] & 0x000000ffU) ^
847 (Te3[(s3 >> 8) & 0xff] & 0x0000ff00U) ^
848 (Te0[(s0 >> 16) & 0xff] & 0x00ff0000U) ^
849 (Te1[(s1 >> 24) ] & 0xff000000U) ^
852 (Te2[(s3 ) & 0xff] & 0x000000ffU) ^
853 (Te3[(s0 >> 8) & 0xff] & 0x0000ff00U) ^
854 (Te0[(s1 >> 16) & 0xff] & 0x00ff0000U) ^
855 (Te1[(s2 >> 24) ] & 0xff000000U) ^
861 * Decrypt a single block
862 * in and out can overlap
864 void AES_decrypt(const unsigned char *in, unsigned char *out,
869 u32 s0, s1, s2, s3, t[4];
872 assert(in && out && key);
876 * map byte array block to cipher state
877 * and add initial round key:
879 s0 = GETU32(in ) ^ rk[0];
880 s1 = GETU32(in + 4) ^ rk[1];
881 s2 = GETU32(in + 8) ^ rk[2];
882 s3 = GETU32(in + 12) ^ rk[3];
884 #if defined(AES_COMPACT_IN_OUTER_ROUNDS)
887 t[0] = (u32)Td4[(s0 ) & 0xff] ^
888 (u32)Td4[(s3 >> 8) & 0xff] << 8 ^
889 (u32)Td4[(s2 >> 16) & 0xff] << 16 ^
890 (u32)Td4[(s1 >> 24) ] << 24;
891 t[1] = (u32)Td4[(s1 ) & 0xff] ^
892 (u32)Td4[(s0 >> 8) & 0xff] << 8 ^
893 (u32)Td4[(s3 >> 16) & 0xff] << 16 ^
894 (u32)Td4[(s2 >> 24) ] << 24;
895 t[2] = (u32)Td4[(s2 ) & 0xff] ^
896 (u32)Td4[(s1 >> 8) & 0xff] << 8 ^
897 (u32)Td4[(s0 >> 16) & 0xff] << 16 ^
898 (u32)Td4[(s3 >> 24) ] << 24;
899 t[3] = (u32)Td4[(s3 ) & 0xff] ^
900 (u32)Td4[(s2 >> 8) & 0xff] << 8 ^
901 (u32)Td4[(s1 >> 16) & 0xff] << 16 ^
902 (u32)Td4[(s0 >> 24) ] << 24;
904 /* 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] = (u32)Td4[(s0 ) & 0xff] ^
965 (u32)Td4[(s3 >> 8) & 0xff] << 8 ^
966 (u32)Td4[(s2 >> 16) & 0xff] << 16 ^
967 (u32)Td4[(s1 >> 24) ] << 24;
968 t[1] = (u32)Td4[(s1 ) & 0xff] ^
969 (u32)Td4[(s0 >> 8) & 0xff] << 8 ^
970 (u32)Td4[(s3 >> 16) & 0xff] << 16 ^
971 (u32)Td4[(s2 >> 24) ] << 24;
972 t[2] = (u32)Td4[(s2 ) & 0xff] ^
973 (u32)Td4[(s1 >> 8) & 0xff] << 8 ^
974 (u32)Td4[(s0 >> 16) & 0xff] << 16 ^
975 (u32)Td4[(s3 >> 24) ] << 24;
976 t[3] = (u32)Td4[(s3 ) & 0xff] ^
977 (u32)Td4[(s2 >> 8) & 0xff] << 8 ^
978 (u32)Td4[(s1 >> 16) & 0xff] << 16 ^
979 (u32)Td4[(s0 >> 24) ] << 24;
981 /* now do the linear transform using words */
984 u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;
986 for (i = 0; i < 4; i++) {
988 m = tp1 & 0x80808080;
989 tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
990 ((m - (m >> 7)) & 0x1b1b1b1b);
991 m = tp2 & 0x80808080;
992 tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
993 ((m - (m >> 7)) & 0x1b1b1b1b);
994 m = tp4 & 0x80808080;
995 tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
996 ((m - (m >> 7)) & 0x1b1b1b1b);
1000 tpe = tp8 ^ tp4 ^ tp2;
1002 t[i] = tpe ^ ROTATE(tpd,16) ^
1003 ROTATE(tp9,8) ^ ROTATE(tpb,24);
1005 t[i] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
1006 (tp9 >> 24) ^ (tp9 << 8) ^
1007 (tpb >> 8) ^ (tpb << 24);
1013 t[0] = Td0[(s0 ) & 0xff] ^
1014 Td1[(s3 >> 8) & 0xff] ^
1015 Td2[(s2 >> 16) & 0xff] ^
1018 t[1] = Td0[(s1 ) & 0xff] ^
1019 Td1[(s0 >> 8) & 0xff] ^
1020 Td2[(s3 >> 16) & 0xff] ^
1023 t[2] = Td0[(s2 ) & 0xff] ^
1024 Td1[(s1 >> 8) & 0xff] ^
1025 Td2[(s0 >> 16) & 0xff] ^
1028 t[3] = Td0[(s3 ) & 0xff] ^
1029 Td1[(s2 >> 8) & 0xff] ^
1030 Td2[(s1 >> 16) & 0xff] ^
1034 s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
1037 * apply last round and
1038 * map cipher state to byte array block:
1043 ((u32)Td4[(s0 ) & 0xff]) ^
1044 ((u32)Td4[(s3 >> 8) & 0xff] << 8) ^
1045 ((u32)Td4[(s2 >> 16) & 0xff] << 16) ^
1046 ((u32)Td4[(s1 >> 24) ] << 24) ^
1049 ((u32)Td4[(s1 ) & 0xff]) ^
1050 ((u32)Td4[(s0 >> 8) & 0xff] << 8) ^
1051 ((u32)Td4[(s3 >> 16) & 0xff] << 16) ^
1052 ((u32)Td4[(s2 >> 24) ] << 24) ^
1055 ((u32)Td4[(s2 ) & 0xff]) ^
1056 ((u32)Td4[(s1 >> 8) & 0xff] << 8) ^
1057 ((u32)Td4[(s0 >> 16) & 0xff] << 16) ^
1058 ((u32)Td4[(s3 >> 24) ] << 24) ^
1061 ((u32)Td4[(s3 ) & 0xff]) ^
1062 ((u32)Td4[(s2 >> 8) & 0xff] << 8) ^
1063 ((u32)Td4[(s1 >> 16) & 0xff] << 16) ^
1064 ((u32)Td4[(s0 >> 24) ] << 24) ^