?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Fix bug in stream position adjustment
[tor.git] / src / common / aes.c
blob85d1ee7da93f98e96d6d8960523d5ecd28106c9d
1 /* Copyright 2001,2002,2003 Roger Dingledine, Matej Pfajfar. */
2 /* See LICENSE for licensing information */
3 /* $Id$ */
4
5 /* Implementation of a simple AES counter mode. We include AES because
6 * 1) it didn't come with any versions of OpenSSL before 0.9.7.
7 * We include counter mode because OpenSSL doesn't do it right.
8 */
9
10 #include <assert.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #include "orconfig.h"
14 #include "aes.h"
15 #include "util.h"
16
17 /*======================================================================*/
18 /* From rijndael-alg-fst.h */
19
20 typedef uint64_t u64;
21 typedef uint32_t u32;
22 typedef uint8_t u8;
23
24 #define MAXKC (256/32)
25 #define MAXKB (256/8)
26 #define MAXNR 14
27
28 static int rijndaelKeySetupEnc(u32 rk[/*4*(Nr + 1)*/], const u8 cipherKey[], int keyBits);
29 static void rijndaelEncrypt(const u32 rk[/*4*(Nr + 1)*/], int Nr, const u8 pt[16], u8 ct[16]);
30
31 /*======================================================================*/
32 /* Interface to AES code, and counter implementation */
33
34 struct aes_cnt_cipher {
35 u32 rk[4*(MAXNR+1)];
36 int nr;
37 u32 counter1;
38 u32 counter0;
39 u8 buf[16];
40 u8 pos;
41 };
42
43 static void
44 _aes_fill_buf(aes_cnt_cipher_t *cipher)
45 {
46 u32 counter0 = cipher->counter0;
47 u32 counter1 = cipher->counter1;
48 u8 buf[16];
49 memset(buf, 0, 8);
50 buf[15] = (counter0 >> 0) & 0xff;
51 buf[14] = (counter0 >> 8) & 0xff;
52 buf[13] = (counter0 >> 16) & 0xff;
53 buf[12] = (counter0 >> 24) & 0xff;
54 buf[11] = (counter1 >> 0) & 0xff;
55 buf[10] = (counter1 >> 8) & 0xff;
56 buf[ 9] = (counter1 >> 16) & 0xff;
57 buf[ 8] = (counter1 >> 24) & 0xff;
58
59 rijndaelEncrypt(cipher->rk, cipher->nr, buf, cipher->buf);
60 }
61
62 aes_cnt_cipher_t*
63 aes_new_cipher()
64 {
65 aes_cnt_cipher_t* result = tor_malloc(sizeof(aes_cnt_cipher_t));
66 memset(result->rk, 0, 4*(MAXNR+1));
67 memset(result->buf, 0, 16);
68
69 return result;
70 }
71
72 void
73 aes_set_key(aes_cnt_cipher_t *cipher, const unsigned char *key, int key_bits)
74 {
75 cipher->nr = rijndaelKeySetupEnc(cipher->rk, key, key_bits);
76 cipher->counter0 = 0;
77 cipher->counter1 = 0;
78 cipher->pos = 0;
79 _aes_fill_buf(cipher);
80 }
81
82 void
83 aes_free_cipher(aes_cnt_cipher_t *cipher)
84 {
85 assert(cipher);
86 memset(cipher, 0, sizeof(cipher));
87 free(cipher);
88 }
89
90 void
91 aes_crypt(aes_cnt_cipher_t *cipher, const char *input, int len, char *output)
92 {
93 int c = cipher->pos;
94 if (!len) return;
95
96 while (1) {
97 do {
98 if (len-- == 0) { cipher->pos = c; return; }
99 *(output++) = *(input++) ^ cipher->buf[c];
100 } while (++c != 16);
101 cipher->pos = c = 0;
102 if (! ++cipher->counter0)
103 ++cipher->counter1;
104 _aes_fill_buf(cipher);
105 }
106 }
107
108 u64
109 aes_get_counter(aes_cnt_cipher_t *cipher)
110 {
111 u64 counter = cipher->pos;
112 counter |= ((u64)cipher->counter0) << 4;
113 counter |= ((u64)cipher->counter1) << 36;
114 return counter;
115 }
116
117 void
118 aes_set_counter(aes_cnt_cipher_t *cipher, u64 counter)
119 {
120 cipher->pos = (u8)(counter & 0x0f);
121 cipher->counter0 = (u32) ((counter >> 4) & 0xffffffff);
122 cipher->counter1 = (u32) (counter >> 36);
123 _aes_fill_buf(cipher);
124 }
125
126 void
127 aes_adjust_counter(aes_cnt_cipher_t *cipher, long delta)
128 {
129 u64 counter = aes_get_counter(cipher);
130 counter += delta;
131 aes_set_counter(cipher, counter);
132 }
133
134 /*======================================================================*/
135 /* From rijndael-alg-fst.c */
136
137 /**
138 * rijndael-alg-fst.c
139 *
140 * @version 3.0 (December 2000)
141 *
142 * Optimised ANSI C code for the Rijndael cipher (now AES)
143 *
144 * @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>
145 * @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be>
146 * @author Paulo Barreto <paulo.barreto@terra.com.br>
147 *
148 * This code is hereby placed in the public domain.
149 *
150 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
151 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
152 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
153 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
154 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
155 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
156 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
157 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
158 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
159 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
160 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
161 */
162
163 /*
164 Te0[x] = S [x].[02, 01, 01, 03];
165 Te1[x] = S [x].[03, 02, 01, 01];
166 Te2[x] = S [x].[01, 03, 02, 01];
167 Te3[x] = S [x].[01, 01, 03, 02];
168 Te4[x] = S [x].[01, 01, 01, 01];
169
170 Td0[x] = Si[x].[0e, 09, 0d, 0b];
171 Td1[x] = Si[x].[0b, 0e, 09, 0d];
172 Td2[x] = Si[x].[0d, 0b, 0e, 09];
173 Td3[x] = Si[x].[09, 0d, 0b, 0e];
174 Td4[x] = Si[x].[01, 01, 01, 01];
175 */
176
177 static const u32 Te0[256] = {
178 0xc66363a5U, 0xf87c7c84U, 0xee777799U, 0xf67b7b8dU,
179 0xfff2f20dU, 0xd66b6bbdU, 0xde6f6fb1U, 0x91c5c554U,
180 0x60303050U, 0x02010103U, 0xce6767a9U, 0x562b2b7dU,
181 0xe7fefe19U, 0xb5d7d762U, 0x4dababe6U, 0xec76769aU,
182 0x8fcaca45U, 0x1f82829dU, 0x89c9c940U, 0xfa7d7d87U,
183 0xeffafa15U, 0xb25959ebU, 0x8e4747c9U, 0xfbf0f00bU,
184 0x41adadecU, 0xb3d4d467U, 0x5fa2a2fdU, 0x45afafeaU,
185 0x239c9cbfU, 0x53a4a4f7U, 0xe4727296U, 0x9bc0c05bU,
186 0x75b7b7c2U, 0xe1fdfd1cU, 0x3d9393aeU, 0x4c26266aU,
187 0x6c36365aU, 0x7e3f3f41U, 0xf5f7f702U, 0x83cccc4fU,
188 0x6834345cU, 0x51a5a5f4U, 0xd1e5e534U, 0xf9f1f108U,
189 0xe2717193U, 0xabd8d873U, 0x62313153U, 0x2a15153fU,
190 0x0804040cU, 0x95c7c752U, 0x46232365U, 0x9dc3c35eU,
191 0x30181828U, 0x379696a1U, 0x0a05050fU, 0x2f9a9ab5U,
192 0x0e070709U, 0x24121236U, 0x1b80809bU, 0xdfe2e23dU,
193 0xcdebeb26U, 0x4e272769U, 0x7fb2b2cdU, 0xea75759fU,
194 0x1209091bU, 0x1d83839eU, 0x582c2c74U, 0x341a1a2eU,
195 0x361b1b2dU, 0xdc6e6eb2U, 0xb45a5aeeU, 0x5ba0a0fbU,
196 0xa45252f6U, 0x763b3b4dU, 0xb7d6d661U, 0x7db3b3ceU,
197 0x5229297bU, 0xdde3e33eU, 0x5e2f2f71U, 0x13848497U,
198 0xa65353f5U, 0xb9d1d168U, 0x00000000U, 0xc1eded2cU,
199 0x40202060U, 0xe3fcfc1fU, 0x79b1b1c8U, 0xb65b5bedU,
200 0xd46a6abeU, 0x8dcbcb46U, 0x67bebed9U, 0x7239394bU,
201 0x944a4adeU, 0x984c4cd4U, 0xb05858e8U, 0x85cfcf4aU,
202 0xbbd0d06bU, 0xc5efef2aU, 0x4faaaae5U, 0xedfbfb16U,
203 0x864343c5U, 0x9a4d4dd7U, 0x66333355U, 0x11858594U,
204 0x8a4545cfU, 0xe9f9f910U, 0x04020206U, 0xfe7f7f81U,
205 0xa05050f0U, 0x783c3c44U, 0x259f9fbaU, 0x4ba8a8e3U,
206 0xa25151f3U, 0x5da3a3feU, 0x804040c0U, 0x058f8f8aU,
207 0x3f9292adU, 0x219d9dbcU, 0x70383848U, 0xf1f5f504U,
208 0x63bcbcdfU, 0x77b6b6c1U, 0xafdada75U, 0x42212163U,
209 0x20101030U, 0xe5ffff1aU, 0xfdf3f30eU, 0xbfd2d26dU,
210 0x81cdcd4cU, 0x180c0c14U, 0x26131335U, 0xc3ecec2fU,
211 0xbe5f5fe1U, 0x359797a2U, 0x884444ccU, 0x2e171739U,
212 0x93c4c457U, 0x55a7a7f2U, 0xfc7e7e82U, 0x7a3d3d47U,
213 0xc86464acU, 0xba5d5de7U, 0x3219192bU, 0xe6737395U,
214 0xc06060a0U, 0x19818198U, 0x9e4f4fd1U, 0xa3dcdc7fU,
215 0x44222266U, 0x542a2a7eU, 0x3b9090abU, 0x0b888883U,
216 0x8c4646caU, 0xc7eeee29U, 0x6bb8b8d3U, 0x2814143cU,
217 0xa7dede79U, 0xbc5e5ee2U, 0x160b0b1dU, 0xaddbdb76U,
218 0xdbe0e03bU, 0x64323256U, 0x743a3a4eU, 0x140a0a1eU,
219 0x924949dbU, 0x0c06060aU, 0x4824246cU, 0xb85c5ce4U,
220 0x9fc2c25dU, 0xbdd3d36eU, 0x43acacefU, 0xc46262a6U,
221 0x399191a8U, 0x319595a4U, 0xd3e4e437U, 0xf279798bU,
222 0xd5e7e732U, 0x8bc8c843U, 0x6e373759U, 0xda6d6db7U,
223 0x018d8d8cU, 0xb1d5d564U, 0x9c4e4ed2U, 0x49a9a9e0U,
224 0xd86c6cb4U, 0xac5656faU, 0xf3f4f407U, 0xcfeaea25U,
225 0xca6565afU, 0xf47a7a8eU, 0x47aeaee9U, 0x10080818U,
226 0x6fbabad5U, 0xf0787888U, 0x4a25256fU, 0x5c2e2e72U,
227 0x381c1c24U, 0x57a6a6f1U, 0x73b4b4c7U, 0x97c6c651U,
228 0xcbe8e823U, 0xa1dddd7cU, 0xe874749cU, 0x3e1f1f21U,
229 0x964b4bddU, 0x61bdbddcU, 0x0d8b8b86U, 0x0f8a8a85U,
230 0xe0707090U, 0x7c3e3e42U, 0x71b5b5c4U, 0xcc6666aaU,
231 0x904848d8U, 0x06030305U, 0xf7f6f601U, 0x1c0e0e12U,
232 0xc26161a3U, 0x6a35355fU, 0xae5757f9U, 0x69b9b9d0U,
233 0x17868691U, 0x99c1c158U, 0x3a1d1d27U, 0x279e9eb9U,
234 0xd9e1e138U, 0xebf8f813U, 0x2b9898b3U, 0x22111133U,
235 0xd26969bbU, 0xa9d9d970U, 0x078e8e89U, 0x339494a7U,
236 0x2d9b9bb6U, 0x3c1e1e22U, 0x15878792U, 0xc9e9e920U,
237 0x87cece49U, 0xaa5555ffU, 0x50282878U, 0xa5dfdf7aU,
238 0x038c8c8fU, 0x59a1a1f8U, 0x09898980U, 0x1a0d0d17U,
239 0x65bfbfdaU, 0xd7e6e631U, 0x844242c6U, 0xd06868b8U,
240 0x824141c3U, 0x299999b0U, 0x5a2d2d77U, 0x1e0f0f11U,
241 0x7bb0b0cbU, 0xa85454fcU, 0x6dbbbbd6U, 0x2c16163aU,
242 };
243 static const u32 Te1[256] = {
244 0xa5c66363U, 0x84f87c7cU, 0x99ee7777U, 0x8df67b7bU,
245 0x0dfff2f2U, 0xbdd66b6bU, 0xb1de6f6fU, 0x5491c5c5U,
246 0x50603030U, 0x03020101U, 0xa9ce6767U, 0x7d562b2bU,
247 0x19e7fefeU, 0x62b5d7d7U, 0xe64dababU, 0x9aec7676U,
248 0x458fcacaU, 0x9d1f8282U, 0x4089c9c9U, 0x87fa7d7dU,
249 0x15effafaU, 0xebb25959U, 0xc98e4747U, 0x0bfbf0f0U,
250 0xec41adadU, 0x67b3d4d4U, 0xfd5fa2a2U, 0xea45afafU,
251 0xbf239c9cU, 0xf753a4a4U, 0x96e47272U, 0x5b9bc0c0U,
252 0xc275b7b7U, 0x1ce1fdfdU, 0xae3d9393U, 0x6a4c2626U,
253 0x5a6c3636U, 0x417e3f3fU, 0x02f5f7f7U, 0x4f83ccccU,
254 0x5c683434U, 0xf451a5a5U, 0x34d1e5e5U, 0x08f9f1f1U,
255 0x93e27171U, 0x73abd8d8U, 0x53623131U, 0x3f2a1515U,
256 0x0c080404U, 0x5295c7c7U, 0x65462323U, 0x5e9dc3c3U,
257 0x28301818U, 0xa1379696U, 0x0f0a0505U, 0xb52f9a9aU,
258 0x090e0707U, 0x36241212U, 0x9b1b8080U, 0x3ddfe2e2U,
259 0x26cdebebU, 0x694e2727U, 0xcd7fb2b2U, 0x9fea7575U,
260 0x1b120909U, 0x9e1d8383U, 0x74582c2cU, 0x2e341a1aU,
261 0x2d361b1bU, 0xb2dc6e6eU, 0xeeb45a5aU, 0xfb5ba0a0U,
262 0xf6a45252U, 0x4d763b3bU, 0x61b7d6d6U, 0xce7db3b3U,
263 0x7b522929U, 0x3edde3e3U, 0x715e2f2fU, 0x97138484U,
264 0xf5a65353U, 0x68b9d1d1U, 0x00000000U, 0x2cc1ededU,
265 0x60402020U, 0x1fe3fcfcU, 0xc879b1b1U, 0xedb65b5bU,
266 0xbed46a6aU, 0x468dcbcbU, 0xd967bebeU, 0x4b723939U,
267 0xde944a4aU, 0xd4984c4cU, 0xe8b05858U, 0x4a85cfcfU,
268 0x6bbbd0d0U, 0x2ac5efefU, 0xe54faaaaU, 0x16edfbfbU,
269 0xc5864343U, 0xd79a4d4dU, 0x55663333U, 0x94118585U,
270 0xcf8a4545U, 0x10e9f9f9U, 0x06040202U, 0x81fe7f7fU,
271 0xf0a05050U, 0x44783c3cU, 0xba259f9fU, 0xe34ba8a8U,
272 0xf3a25151U, 0xfe5da3a3U, 0xc0804040U, 0x8a058f8fU,
273 0xad3f9292U, 0xbc219d9dU, 0x48703838U, 0x04f1f5f5U,
274 0xdf63bcbcU, 0xc177b6b6U, 0x75afdadaU, 0x63422121U,
275 0x30201010U, 0x1ae5ffffU, 0x0efdf3f3U, 0x6dbfd2d2U,
276 0x4c81cdcdU, 0x14180c0cU, 0x35261313U, 0x2fc3ececU,
277 0xe1be5f5fU, 0xa2359797U, 0xcc884444U, 0x392e1717U,
278 0x5793c4c4U, 0xf255a7a7U, 0x82fc7e7eU, 0x477a3d3dU,
279 0xacc86464U, 0xe7ba5d5dU, 0x2b321919U, 0x95e67373U,
280 0xa0c06060U, 0x98198181U, 0xd19e4f4fU, 0x7fa3dcdcU,
281 0x66442222U, 0x7e542a2aU, 0xab3b9090U, 0x830b8888U,
282 0xca8c4646U, 0x29c7eeeeU, 0xd36bb8b8U, 0x3c281414U,
283 0x79a7dedeU, 0xe2bc5e5eU, 0x1d160b0bU, 0x76addbdbU,
284 0x3bdbe0e0U, 0x56643232U, 0x4e743a3aU, 0x1e140a0aU,
285 0xdb924949U, 0x0a0c0606U, 0x6c482424U, 0xe4b85c5cU,
286 0x5d9fc2c2U, 0x6ebdd3d3U, 0xef43acacU, 0xa6c46262U,
287 0xa8399191U, 0xa4319595U, 0x37d3e4e4U, 0x8bf27979U,
288 0x32d5e7e7U, 0x438bc8c8U, 0x596e3737U, 0xb7da6d6dU,
289 0x8c018d8dU, 0x64b1d5d5U, 0xd29c4e4eU, 0xe049a9a9U,
290 0xb4d86c6cU, 0xfaac5656U, 0x07f3f4f4U, 0x25cfeaeaU,
291 0xafca6565U, 0x8ef47a7aU, 0xe947aeaeU, 0x18100808U,
292 0xd56fbabaU, 0x88f07878U, 0x6f4a2525U, 0x725c2e2eU,
293 0x24381c1cU, 0xf157a6a6U, 0xc773b4b4U, 0x5197c6c6U,
294 0x23cbe8e8U, 0x7ca1ddddU, 0x9ce87474U, 0x213e1f1fU,
295 0xdd964b4bU, 0xdc61bdbdU, 0x860d8b8bU, 0x850f8a8aU,
296 0x90e07070U, 0x427c3e3eU, 0xc471b5b5U, 0xaacc6666U,
297 0xd8904848U, 0x05060303U, 0x01f7f6f6U, 0x121c0e0eU,
298 0xa3c26161U, 0x5f6a3535U, 0xf9ae5757U, 0xd069b9b9U,
299 0x91178686U, 0x5899c1c1U, 0x273a1d1dU, 0xb9279e9eU,
300 0x38d9e1e1U, 0x13ebf8f8U, 0xb32b9898U, 0x33221111U,
301 0xbbd26969U, 0x70a9d9d9U, 0x89078e8eU, 0xa7339494U,
302 0xb62d9b9bU, 0x223c1e1eU, 0x92158787U, 0x20c9e9e9U,
303 0x4987ceceU, 0xffaa5555U, 0x78502828U, 0x7aa5dfdfU,
304 0x8f038c8cU, 0xf859a1a1U, 0x80098989U, 0x171a0d0dU,
305 0xda65bfbfU, 0x31d7e6e6U, 0xc6844242U, 0xb8d06868U,
306 0xc3824141U, 0xb0299999U, 0x775a2d2dU, 0x111e0f0fU,
307 0xcb7bb0b0U, 0xfca85454U, 0xd66dbbbbU, 0x3a2c1616U,
308 };
309 static const u32 Te2[256] = {
310 0x63a5c663U, 0x7c84f87cU, 0x7799ee77U, 0x7b8df67bU,
311 0xf20dfff2U, 0x6bbdd66bU, 0x6fb1de6fU, 0xc55491c5U,
312 0x30506030U, 0x01030201U, 0x67a9ce67U, 0x2b7d562bU,
313 0xfe19e7feU, 0xd762b5d7U, 0xabe64dabU, 0x769aec76U,
314 0xca458fcaU, 0x829d1f82U, 0xc94089c9U, 0x7d87fa7dU,
315 0xfa15effaU, 0x59ebb259U, 0x47c98e47U, 0xf00bfbf0U,
316 0xadec41adU, 0xd467b3d4U, 0xa2fd5fa2U, 0xafea45afU,
317 0x9cbf239cU, 0xa4f753a4U, 0x7296e472U, 0xc05b9bc0U,
318 0xb7c275b7U, 0xfd1ce1fdU, 0x93ae3d93U, 0x266a4c26U,
319 0x365a6c36U, 0x3f417e3fU, 0xf702f5f7U, 0xcc4f83ccU,
320 0x345c6834U, 0xa5f451a5U, 0xe534d1e5U, 0xf108f9f1U,
321 0x7193e271U, 0xd873abd8U, 0x31536231U, 0x153f2a15U,
322 0x040c0804U, 0xc75295c7U, 0x23654623U, 0xc35e9dc3U,
323 0x18283018U, 0x96a13796U, 0x050f0a05U, 0x9ab52f9aU,
324 0x07090e07U, 0x12362412U, 0x809b1b80U, 0xe23ddfe2U,
325 0xeb26cdebU, 0x27694e27U, 0xb2cd7fb2U, 0x759fea75U,
326 0x091b1209U, 0x839e1d83U, 0x2c74582cU, 0x1a2e341aU,
327 0x1b2d361bU, 0x6eb2dc6eU, 0x5aeeb45aU, 0xa0fb5ba0U,
328 0x52f6a452U, 0x3b4d763bU, 0xd661b7d6U, 0xb3ce7db3U,
329 0x297b5229U, 0xe33edde3U, 0x2f715e2fU, 0x84971384U,
330 0x53f5a653U, 0xd168b9d1U, 0x00000000U, 0xed2cc1edU,
331 0x20604020U, 0xfc1fe3fcU, 0xb1c879b1U, 0x5bedb65bU,
332 0x6abed46aU, 0xcb468dcbU, 0xbed967beU, 0x394b7239U,
333 0x4ade944aU, 0x4cd4984cU, 0x58e8b058U, 0xcf4a85cfU,
334 0xd06bbbd0U, 0xef2ac5efU, 0xaae54faaU, 0xfb16edfbU,
335 0x43c58643U, 0x4dd79a4dU, 0x33556633U, 0x85941185U,
336 0x45cf8a45U, 0xf910e9f9U, 0x02060402U, 0x7f81fe7fU,
337 0x50f0a050U, 0x3c44783cU, 0x9fba259fU, 0xa8e34ba8U,
338 0x51f3a251U, 0xa3fe5da3U, 0x40c08040U, 0x8f8a058fU,
339 0x92ad3f92U, 0x9dbc219dU, 0x38487038U, 0xf504f1f5U,
340 0xbcdf63bcU, 0xb6c177b6U, 0xda75afdaU, 0x21634221U,
341 0x10302010U, 0xff1ae5ffU, 0xf30efdf3U, 0xd26dbfd2U,
342 0xcd4c81cdU, 0x0c14180cU, 0x13352613U, 0xec2fc3ecU,
343 0x5fe1be5fU, 0x97a23597U, 0x44cc8844U, 0x17392e17U,
344 0xc45793c4U, 0xa7f255a7U, 0x7e82fc7eU, 0x3d477a3dU,
345 0x64acc864U, 0x5de7ba5dU, 0x192b3219U, 0x7395e673U,
346 0x60a0c060U, 0x81981981U, 0x4fd19e4fU, 0xdc7fa3dcU,
347 0x22664422U, 0x2a7e542aU, 0x90ab3b90U, 0x88830b88U,
348 0x46ca8c46U, 0xee29c7eeU, 0xb8d36bb8U, 0x143c2814U,
349 0xde79a7deU, 0x5ee2bc5eU, 0x0b1d160bU, 0xdb76addbU,
350 0xe03bdbe0U, 0x32566432U, 0x3a4e743aU, 0x0a1e140aU,
351 0x49db9249U, 0x060a0c06U, 0x246c4824U, 0x5ce4b85cU,
352 0xc25d9fc2U, 0xd36ebdd3U, 0xacef43acU, 0x62a6c462U,
353 0x91a83991U, 0x95a43195U, 0xe437d3e4U, 0x798bf279U,
354 0xe732d5e7U, 0xc8438bc8U, 0x37596e37U, 0x6db7da6dU,
355 0x8d8c018dU, 0xd564b1d5U, 0x4ed29c4eU, 0xa9e049a9U,
356 0x6cb4d86cU, 0x56faac56U, 0xf407f3f4U, 0xea25cfeaU,
357 0x65afca65U, 0x7a8ef47aU, 0xaee947aeU, 0x08181008U,
358 0xbad56fbaU, 0x7888f078U, 0x256f4a25U, 0x2e725c2eU,
359 0x1c24381cU, 0xa6f157a6U, 0xb4c773b4U, 0xc65197c6U,
360 0xe823cbe8U, 0xdd7ca1ddU, 0x749ce874U, 0x1f213e1fU,
361 0x4bdd964bU, 0xbddc61bdU, 0x8b860d8bU, 0x8a850f8aU,
362 0x7090e070U, 0x3e427c3eU, 0xb5c471b5U, 0x66aacc66U,
363 0x48d89048U, 0x03050603U, 0xf601f7f6U, 0x0e121c0eU,
364 0x61a3c261U, 0x355f6a35U, 0x57f9ae57U, 0xb9d069b9U,
365 0x86911786U, 0xc15899c1U, 0x1d273a1dU, 0x9eb9279eU,
366 0xe138d9e1U, 0xf813ebf8U, 0x98b32b98U, 0x11332211U,
367 0x69bbd269U, 0xd970a9d9U, 0x8e89078eU, 0x94a73394U,
368 0x9bb62d9bU, 0x1e223c1eU, 0x87921587U, 0xe920c9e9U,
369 0xce4987ceU, 0x55ffaa55U, 0x28785028U, 0xdf7aa5dfU,
370 0x8c8f038cU, 0xa1f859a1U, 0x89800989U, 0x0d171a0dU,
371 0xbfda65bfU, 0xe631d7e6U, 0x42c68442U, 0x68b8d068U,
372 0x41c38241U, 0x99b02999U, 0x2d775a2dU, 0x0f111e0fU,
373 0xb0cb7bb0U, 0x54fca854U, 0xbbd66dbbU, 0x163a2c16U,
374 };
375 static const u32 Te3[256] = {
376
377 0x6363a5c6U, 0x7c7c84f8U, 0x777799eeU, 0x7b7b8df6U,
378 0xf2f20dffU, 0x6b6bbdd6U, 0x6f6fb1deU, 0xc5c55491U,
379 0x30305060U, 0x01010302U, 0x6767a9ceU, 0x2b2b7d56U,
380 0xfefe19e7U, 0xd7d762b5U, 0xababe64dU, 0x76769aecU,
381 0xcaca458fU, 0x82829d1fU, 0xc9c94089U, 0x7d7d87faU,
382 0xfafa15efU, 0x5959ebb2U, 0x4747c98eU, 0xf0f00bfbU,
383 0xadadec41U, 0xd4d467b3U, 0xa2a2fd5fU, 0xafafea45U,
384 0x9c9cbf23U, 0xa4a4f753U, 0x727296e4U, 0xc0c05b9bU,
385 0xb7b7c275U, 0xfdfd1ce1U, 0x9393ae3dU, 0x26266a4cU,
386 0x36365a6cU, 0x3f3f417eU, 0xf7f702f5U, 0xcccc4f83U,
387 0x34345c68U, 0xa5a5f451U, 0xe5e534d1U, 0xf1f108f9U,
388 0x717193e2U, 0xd8d873abU, 0x31315362U, 0x15153f2aU,
389 0x04040c08U, 0xc7c75295U, 0x23236546U, 0xc3c35e9dU,
390 0x18182830U, 0x9696a137U, 0x05050f0aU, 0x9a9ab52fU,
391 0x0707090eU, 0x12123624U, 0x80809b1bU, 0xe2e23ddfU,
392 0xebeb26cdU, 0x2727694eU, 0xb2b2cd7fU, 0x75759feaU,
393 0x09091b12U, 0x83839e1dU, 0x2c2c7458U, 0x1a1a2e34U,
394 0x1b1b2d36U, 0x6e6eb2dcU, 0x5a5aeeb4U, 0xa0a0fb5bU,
395 0x5252f6a4U, 0x3b3b4d76U, 0xd6d661b7U, 0xb3b3ce7dU,
396 0x29297b52U, 0xe3e33eddU, 0x2f2f715eU, 0x84849713U,
397 0x5353f5a6U, 0xd1d168b9U, 0x00000000U, 0xeded2cc1U,
398 0x20206040U, 0xfcfc1fe3U, 0xb1b1c879U, 0x5b5bedb6U,
399 0x6a6abed4U, 0xcbcb468dU, 0xbebed967U, 0x39394b72U,
400 0x4a4ade94U, 0x4c4cd498U, 0x5858e8b0U, 0xcfcf4a85U,
401 0xd0d06bbbU, 0xefef2ac5U, 0xaaaae54fU, 0xfbfb16edU,
402 0x4343c586U, 0x4d4dd79aU, 0x33335566U, 0x85859411U,
403 0x4545cf8aU, 0xf9f910e9U, 0x02020604U, 0x7f7f81feU,
404 0x5050f0a0U, 0x3c3c4478U, 0x9f9fba25U, 0xa8a8e34bU,
405 0x5151f3a2U, 0xa3a3fe5dU, 0x4040c080U, 0x8f8f8a05U,
406 0x9292ad3fU, 0x9d9dbc21U, 0x38384870U, 0xf5f504f1U,
407 0xbcbcdf63U, 0xb6b6c177U, 0xdada75afU, 0x21216342U,
408 0x10103020U, 0xffff1ae5U, 0xf3f30efdU, 0xd2d26dbfU,
409 0xcdcd4c81U, 0x0c0c1418U, 0x13133526U, 0xecec2fc3U,
410 0x5f5fe1beU, 0x9797a235U, 0x4444cc88U, 0x1717392eU,
411 0xc4c45793U, 0xa7a7f255U, 0x7e7e82fcU, 0x3d3d477aU,
412 0x6464acc8U, 0x5d5de7baU, 0x19192b32U, 0x737395e6U,
413 0x6060a0c0U, 0x81819819U, 0x4f4fd19eU, 0xdcdc7fa3U,
414 0x22226644U, 0x2a2a7e54U, 0x9090ab3bU, 0x8888830bU,
415 0x4646ca8cU, 0xeeee29c7U, 0xb8b8d36bU, 0x14143c28U,
416 0xdede79a7U, 0x5e5ee2bcU, 0x0b0b1d16U, 0xdbdb76adU,
417 0xe0e03bdbU, 0x32325664U, 0x3a3a4e74U, 0x0a0a1e14U,
418 0x4949db92U, 0x06060a0cU, 0x24246c48U, 0x5c5ce4b8U,
419 0xc2c25d9fU, 0xd3d36ebdU, 0xacacef43U, 0x6262a6c4U,
420 0x9191a839U, 0x9595a431U, 0xe4e437d3U, 0x79798bf2U,
421 0xe7e732d5U, 0xc8c8438bU, 0x3737596eU, 0x6d6db7daU,
422 0x8d8d8c01U, 0xd5d564b1U, 0x4e4ed29cU, 0xa9a9e049U,
423 0x6c6cb4d8U, 0x5656faacU, 0xf4f407f3U, 0xeaea25cfU,
424 0x6565afcaU, 0x7a7a8ef4U, 0xaeaee947U, 0x08081810U,
425 0xbabad56fU, 0x787888f0U, 0x25256f4aU, 0x2e2e725cU,
426 0x1c1c2438U, 0xa6a6f157U, 0xb4b4c773U, 0xc6c65197U,
427 0xe8e823cbU, 0xdddd7ca1U, 0x74749ce8U, 0x1f1f213eU,
428 0x4b4bdd96U, 0xbdbddc61U, 0x8b8b860dU, 0x8a8a850fU,
429 0x707090e0U, 0x3e3e427cU, 0xb5b5c471U, 0x6666aaccU,
430 0x4848d890U, 0x03030506U, 0xf6f601f7U, 0x0e0e121cU,
431 0x6161a3c2U, 0x35355f6aU, 0x5757f9aeU, 0xb9b9d069U,
432 0x86869117U, 0xc1c15899U, 0x1d1d273aU, 0x9e9eb927U,
433 0xe1e138d9U, 0xf8f813ebU, 0x9898b32bU, 0x11113322U,
434 0x6969bbd2U, 0xd9d970a9U, 0x8e8e8907U, 0x9494a733U,
435 0x9b9bb62dU, 0x1e1e223cU, 0x87879215U, 0xe9e920c9U,
436 0xcece4987U, 0x5555ffaaU, 0x28287850U, 0xdfdf7aa5U,
437 0x8c8c8f03U, 0xa1a1f859U, 0x89898009U, 0x0d0d171aU,
438 0xbfbfda65U, 0xe6e631d7U, 0x4242c684U, 0x6868b8d0U,
439 0x4141c382U, 0x9999b029U, 0x2d2d775aU, 0x0f0f111eU,
440 0xb0b0cb7bU, 0x5454fca8U, 0xbbbbd66dU, 0x16163a2cU,
441 };
442 static const u32 Te4[256] = {
443 0x63636363U, 0x7c7c7c7cU, 0x77777777U, 0x7b7b7b7bU,
444 0xf2f2f2f2U, 0x6b6b6b6bU, 0x6f6f6f6fU, 0xc5c5c5c5U,
445 0x30303030U, 0x01010101U, 0x67676767U, 0x2b2b2b2bU,
446 0xfefefefeU, 0xd7d7d7d7U, 0xababababU, 0x76767676U,
447 0xcacacacaU, 0x82828282U, 0xc9c9c9c9U, 0x7d7d7d7dU,
448 0xfafafafaU, 0x59595959U, 0x47474747U, 0xf0f0f0f0U,
449 0xadadadadU, 0xd4d4d4d4U, 0xa2a2a2a2U, 0xafafafafU,
450 0x9c9c9c9cU, 0xa4a4a4a4U, 0x72727272U, 0xc0c0c0c0U,
451 0xb7b7b7b7U, 0xfdfdfdfdU, 0x93939393U, 0x26262626U,
452 0x36363636U, 0x3f3f3f3fU, 0xf7f7f7f7U, 0xccccccccU,
453 0x34343434U, 0xa5a5a5a5U, 0xe5e5e5e5U, 0xf1f1f1f1U,
454 0x71717171U, 0xd8d8d8d8U, 0x31313131U, 0x15151515U,
455 0x04040404U, 0xc7c7c7c7U, 0x23232323U, 0xc3c3c3c3U,
456 0x18181818U, 0x96969696U, 0x05050505U, 0x9a9a9a9aU,
457 0x07070707U, 0x12121212U, 0x80808080U, 0xe2e2e2e2U,
458 0xebebebebU, 0x27272727U, 0xb2b2b2b2U, 0x75757575U,
459 0x09090909U, 0x83838383U, 0x2c2c2c2cU, 0x1a1a1a1aU,
460 0x1b1b1b1bU, 0x6e6e6e6eU, 0x5a5a5a5aU, 0xa0a0a0a0U,
461 0x52525252U, 0x3b3b3b3bU, 0xd6d6d6d6U, 0xb3b3b3b3U,
462 0x29292929U, 0xe3e3e3e3U, 0x2f2f2f2fU, 0x84848484U,
463 0x53535353U, 0xd1d1d1d1U, 0x00000000U, 0xededededU,
464 0x20202020U, 0xfcfcfcfcU, 0xb1b1b1b1U, 0x5b5b5b5bU,
465 0x6a6a6a6aU, 0xcbcbcbcbU, 0xbebebebeU, 0x39393939U,
466 0x4a4a4a4aU, 0x4c4c4c4cU, 0x58585858U, 0xcfcfcfcfU,
467 0xd0d0d0d0U, 0xefefefefU, 0xaaaaaaaaU, 0xfbfbfbfbU,
468 0x43434343U, 0x4d4d4d4dU, 0x33333333U, 0x85858585U,
469 0x45454545U, 0xf9f9f9f9U, 0x02020202U, 0x7f7f7f7fU,
470 0x50505050U, 0x3c3c3c3cU, 0x9f9f9f9fU, 0xa8a8a8a8U,
471 0x51515151U, 0xa3a3a3a3U, 0x40404040U, 0x8f8f8f8fU,
472 0x92929292U, 0x9d9d9d9dU, 0x38383838U, 0xf5f5f5f5U,
473 0xbcbcbcbcU, 0xb6b6b6b6U, 0xdadadadaU, 0x21212121U,
474 0x10101010U, 0xffffffffU, 0xf3f3f3f3U, 0xd2d2d2d2U,
475 0xcdcdcdcdU, 0x0c0c0c0cU, 0x13131313U, 0xececececU,
476 0x5f5f5f5fU, 0x97979797U, 0x44444444U, 0x17171717U,
477 0xc4c4c4c4U, 0xa7a7a7a7U, 0x7e7e7e7eU, 0x3d3d3d3dU,
478 0x64646464U, 0x5d5d5d5dU, 0x19191919U, 0x73737373U,
479 0x60606060U, 0x81818181U, 0x4f4f4f4fU, 0xdcdcdcdcU,
480 0x22222222U, 0x2a2a2a2aU, 0x90909090U, 0x88888888U,
481 0x46464646U, 0xeeeeeeeeU, 0xb8b8b8b8U, 0x14141414U,
482 0xdedededeU, 0x5e5e5e5eU, 0x0b0b0b0bU, 0xdbdbdbdbU,
483 0xe0e0e0e0U, 0x32323232U, 0x3a3a3a3aU, 0x0a0a0a0aU,
484 0x49494949U, 0x06060606U, 0x24242424U, 0x5c5c5c5cU,
485 0xc2c2c2c2U, 0xd3d3d3d3U, 0xacacacacU, 0x62626262U,
486 0x91919191U, 0x95959595U, 0xe4e4e4e4U, 0x79797979U,
487 0xe7e7e7e7U, 0xc8c8c8c8U, 0x37373737U, 0x6d6d6d6dU,
488 0x8d8d8d8dU, 0xd5d5d5d5U, 0x4e4e4e4eU, 0xa9a9a9a9U,
489 0x6c6c6c6cU, 0x56565656U, 0xf4f4f4f4U, 0xeaeaeaeaU,
490 0x65656565U, 0x7a7a7a7aU, 0xaeaeaeaeU, 0x08080808U,
491 0xbabababaU, 0x78787878U, 0x25252525U, 0x2e2e2e2eU,
492 0x1c1c1c1cU, 0xa6a6a6a6U, 0xb4b4b4b4U, 0xc6c6c6c6U,
493 0xe8e8e8e8U, 0xddddddddU, 0x74747474U, 0x1f1f1f1fU,
494 0x4b4b4b4bU, 0xbdbdbdbdU, 0x8b8b8b8bU, 0x8a8a8a8aU,
495 0x70707070U, 0x3e3e3e3eU, 0xb5b5b5b5U, 0x66666666U,
496 0x48484848U, 0x03030303U, 0xf6f6f6f6U, 0x0e0e0e0eU,
497 0x61616161U, 0x35353535U, 0x57575757U, 0xb9b9b9b9U,
498 0x86868686U, 0xc1c1c1c1U, 0x1d1d1d1dU, 0x9e9e9e9eU,
499 0xe1e1e1e1U, 0xf8f8f8f8U, 0x98989898U, 0x11111111U,
500 0x69696969U, 0xd9d9d9d9U, 0x8e8e8e8eU, 0x94949494U,
501 0x9b9b9b9bU, 0x1e1e1e1eU, 0x87878787U, 0xe9e9e9e9U,
502 0xcecececeU, 0x55555555U, 0x28282828U, 0xdfdfdfdfU,
503 0x8c8c8c8cU, 0xa1a1a1a1U, 0x89898989U, 0x0d0d0d0dU,
504 0xbfbfbfbfU, 0xe6e6e6e6U, 0x42424242U, 0x68686868U,
505 0x41414141U, 0x99999999U, 0x2d2d2d2dU, 0x0f0f0f0fU,
506 0xb0b0b0b0U, 0x54545454U, 0xbbbbbbbbU, 0x16161616U,
507 };
508
509 static const u32 rcon[] = {
510 0x01000000, 0x02000000, 0x04000000, 0x08000000,
511 0x10000000, 0x20000000, 0x40000000, 0x80000000,
512 0x1B000000, 0x36000000, /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */
513 };
514
515 #define SWAP(x) (_lrotl(x, 8) & 0x00ff00ff | _lrotr(x, 8) & 0xff00ff00)
516
517 #ifdef _MSC_VER
518 #define GETU32(p) SWAP(*((u32 *)(p)))
519 #define PUTU32(ct, st) { *((u32 *)(ct)) = SWAP((st)); }
520 #else
521 #define GETU32(pt) (((u32)(pt)[0] << 24) ^ ((u32)(pt)[1] << 16) ^ ((u32)(pt)[2] << 8) ^ ((u32)(pt)[3]))
522 #define PUTU32(ct, st) { (ct)[0] = (u8)((st) >> 24); (ct)[1] = (u8)((st) >> 16); (ct)[2] = (u8)((st) >> 8); (ct)[3] = (u8)(st); }
523 #endif
524
525 /**
526 * Expand the cipher key into the encryption key schedule.
527 *
528 * @return the number of rounds for the given cipher key size.
529 */
530 int rijndaelKeySetupEnc(u32 rk[/*4*(Nr + 1)*/], const u8 cipherKey[], int keyBits) {
531 int i = 0;
532 u32 temp;
533
534 rk[0] = GETU32(cipherKey );
535 rk[1] = GETU32(cipherKey + 4);
536 rk[2] = GETU32(cipherKey + 8);
537 rk[3] = GETU32(cipherKey + 12);
538 if (keyBits == 128) {
539 for (;;) {
540 temp = rk[3];
541 rk[4] = rk[0] ^
542 (Te4[(temp >> 16) & 0xff] & 0xff000000) ^
543 (Te4[(temp >> 8) & 0xff] & 0x00ff0000) ^
544 (Te4[(temp ) & 0xff] & 0x0000ff00) ^
545 (Te4[(temp >> 24) ] & 0x000000ff) ^
546 rcon[i];
547 rk[5] = rk[1] ^ rk[4];
548 rk[6] = rk[2] ^ rk[5];
549 rk[7] = rk[3] ^ rk[6];
550 if (++i == 10) {
551 return 10;
552 }
553 rk += 4;
554 }
555 }
556 rk[4] = GETU32(cipherKey + 16);
557 rk[5] = GETU32(cipherKey + 20);
558 if (keyBits == 192) {
559 for (;;) {
560 temp = rk[ 5];
561 rk[ 6] = rk[ 0] ^
562 (Te4[(temp >> 16) & 0xff] & 0xff000000) ^
563 (Te4[(temp >> 8) & 0xff] & 0x00ff0000) ^
564 (Te4[(temp ) & 0xff] & 0x0000ff00) ^
565 (Te4[(temp >> 24) ] & 0x000000ff) ^
566 rcon[i];
567 rk[ 7] = rk[ 1] ^ rk[ 6];
568 rk[ 8] = rk[ 2] ^ rk[ 7];
569 rk[ 9] = rk[ 3] ^ rk[ 8];
570 if (++i == 8) {
571 return 12;
572 }
573 rk[10] = rk[ 4] ^ rk[ 9];
574 rk[11] = rk[ 5] ^ rk[10];
575 rk += 6;
576 }
577 }
578 rk[6] = GETU32(cipherKey + 24);
579 rk[7] = GETU32(cipherKey + 28);
580 if (keyBits == 256) {
581 for (;;) {
582 temp = rk[ 7];
583 rk[ 8] = rk[ 0] ^
584 (Te4[(temp >> 16) & 0xff] & 0xff000000) ^
585 (Te4[(temp >> 8) & 0xff] & 0x00ff0000) ^
586 (Te4[(temp ) & 0xff] & 0x0000ff00) ^
587 (Te4[(temp >> 24) ] & 0x000000ff) ^
588 rcon[i];
589 rk[ 9] = rk[ 1] ^ rk[ 8];
590 rk[10] = rk[ 2] ^ rk[ 9];
591 rk[11] = rk[ 3] ^ rk[10];
592 if (++i == 7) {
593 return 14;
594 }
595 temp = rk[11];
596 rk[12] = rk[ 4] ^
597 (Te4[(temp >> 24) ] & 0xff000000) ^
598 (Te4[(temp >> 16) & 0xff] & 0x00ff0000) ^
599 (Te4[(temp >> 8) & 0xff] & 0x0000ff00) ^
600 (Te4[(temp ) & 0xff] & 0x000000ff);
601 rk[13] = rk[ 5] ^ rk[12];
602 rk[14] = rk[ 6] ^ rk[13];
603 rk[15] = rk[ 7] ^ rk[14];
604
605 rk += 8;
606 }
607 }
608 return 0;
609 }
610
611 void rijndaelEncrypt(const u32 rk[/*4*(Nr + 1)*/], int Nr, const u8 pt[16], u8 ct[16]) {
612 u32 s0, s1, s2, s3, t0, t1, t2, t3;
613 #ifndef FULL_UNROLL
614 int r;
615 #endif /* ?FULL_UNROLL */
616
617 /*
618 * map byte array block to cipher state
619 * and add initial round key:
620 */
621 s0 = GETU32(pt ) ^ rk[0];
622 s1 = GETU32(pt + 4) ^ rk[1];
623 s2 = GETU32(pt + 8) ^ rk[2];
624 s3 = GETU32(pt + 12) ^ rk[3];
625 #ifdef FULL_UNROLL
626 /* round 1: */
627 t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[ 4];
628 t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[ 5];
629 t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[ 6];
630 t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[ 7];
631 /* round 2: */
632 s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[ 8];
633 s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[ 9];
634 s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[10];
635 s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[11];
636 /* round 3: */
637 t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[12];
638 t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[13];
639 t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[14];
640 t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[15];
641 /* round 4: */
642 s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[16];
643 s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[17];
644 s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[18];
645 s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[19];
646 /* round 5: */
647 t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[20];
648 t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[21];
649 t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[22];
650 t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[23];
651 /* round 6: */
652 s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[24];
653 s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[25];
654 s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[26];
655 s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[27];
656 /* round 7: */
657 t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[28];
658 t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[29];
659 t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[30];
660 t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[31];
661 /* round 8: */
662 s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[32];
663 s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[33];
664 s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[34];
665 s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[35];
666 /* round 9: */
667 t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[36];
668 t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[37];
669 t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[38];
670 t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[39];
671 if (Nr > 10) {
672 /* round 10: */
673 s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[40];
674 s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[41];
675 s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[42];
676 s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[43];
677 /* round 11: */
678 t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[44];
679 t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[45];
680 t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[46];
681 t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[47];
682 if (Nr > 12) {
683 /* round 12: */
684 s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[48];
685 s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[49];
686 s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[50];
687 s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[51];
688 /* round 13: */
689 t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[52];
690 t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[53];
691 t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[54];
692 t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[55];
693 }
694 }
695 rk += Nr << 2;
696 #else /* !FULL_UNROLL */
697 /*
698 * Nr - 1 full rounds:
699 */
700 r = Nr >> 1;
701 for (;;) {
702 t0 =
703 Te0[(s0 >> 24) ] ^
704 Te1[(s1 >> 16) & 0xff] ^
705 Te2[(s2 >> 8) & 0xff] ^
706 Te3[(s3 ) & 0xff] ^
707 rk[4];
708 t1 =
709 Te0[(s1 >> 24) ] ^
710 Te1[(s2 >> 16) & 0xff] ^
711 Te2[(s3 >> 8) & 0xff] ^
712 Te3[(s0 ) & 0xff] ^
713 rk[5];
714 t2 =
715 Te0[(s2 >> 24) ] ^
716 Te1[(s3 >> 16) & 0xff] ^
717 Te2[(s0 >> 8) & 0xff] ^
718 Te3[(s1 ) & 0xff] ^
719 rk[6];
720 t3 =
721 Te0[(s3 >> 24) ] ^
722 Te1[(s0 >> 16) & 0xff] ^
723 Te2[(s1 >> 8) & 0xff] ^
724 Te3[(s2 ) & 0xff] ^
725 rk[7];
726
727 rk += 8;
728 if (--r == 0) {
729 break;
730 }
731
732 s0 =
733 Te0[(t0 >> 24) ] ^
734 Te1[(t1 >> 16) & 0xff] ^
735 Te2[(t2 >> 8) & 0xff] ^
736 Te3[(t3 ) & 0xff] ^
737 rk[0];
738 s1 =
739 Te0[(t1 >> 24) ] ^
740 Te1[(t2 >> 16) & 0xff] ^
741 Te2[(t3 >> 8) & 0xff] ^
742 Te3[(t0 ) & 0xff] ^
743 rk[1];
744 s2 =
745 Te0[(t2 >> 24) ] ^
746 Te1[(t3 >> 16) & 0xff] ^
747 Te2[(t0 >> 8) & 0xff] ^
748 Te3[(t1 ) & 0xff] ^
749 rk[2];
750 s3 =
751 Te0[(t3 >> 24) ] ^
752 Te1[(t0 >> 16) & 0xff] ^
753 Te2[(t1 >> 8) & 0xff] ^
754 Te3[(t2 ) & 0xff] ^
755 rk[3];
756 }
757 #endif /* ?FULL_UNROLL */
758 /*
759 * apply last round and
760 * map cipher state to byte array block:
761 */
762 s0 =
763 (Te4[(t0 >> 24) ] & 0xff000000) ^
764 (Te4[(t1 >> 16) & 0xff] & 0x00ff0000) ^
765 (Te4[(t2 >> 8) & 0xff] & 0x0000ff00) ^
766 (Te4[(t3 ) & 0xff] & 0x000000ff) ^
767 rk[0];
768 PUTU32(ct , s0);
769 s1 =
770 (Te4[(t1 >> 24) ] & 0xff000000) ^
771 (Te4[(t2 >> 16) & 0xff] & 0x00ff0000) ^
772 (Te4[(t3 >> 8) & 0xff] & 0x0000ff00) ^
773 (Te4[(t0 ) & 0xff] & 0x000000ff) ^
774 rk[1];
775 PUTU32(ct + 4, s1);
776 s2 =
777 (Te4[(t2 >> 24) ] & 0xff000000) ^
778 (Te4[(t3 >> 16) & 0xff] & 0x00ff0000) ^
779 (Te4[(t0 >> 8) & 0xff] & 0x0000ff00) ^
780 (Te4[(t1 ) & 0xff] & 0x000000ff) ^
781 rk[2];
782 PUTU32(ct + 8, s2);
783 s3 =
784 (Te4[(t3 >> 24) ] & 0xff000000) ^
785 (Te4[(t0 >> 16) & 0xff] & 0x00ff0000) ^
786 (Te4[(t1 >> 8) & 0xff] & 0x0000ff00) ^
787 (Te4[(t2 ) & 0xff] & 0x000000ff) ^
788 rk[3];
789 PUTU32(ct + 12, s3);
790 }
791
792 /*
793 Local Variables:
794 mode:c
795 indent-tabs-mode:nil
796 c-basic-offset:2
797 End:
798 */
The Onion Router