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1 /* | |
2 * aes_icm.c | |
3 * | |
4 * AES Integer Counter Mode | |
5 * | |
6 * David A. McGrew | |
7 * Cisco Systems, Inc. | |
8 */ | |
9 | |
10 /* | |
11 * | |
12 * Copyright (c) 2001-2006,2013 Cisco Systems, Inc. | |
13 * All rights reserved. | |
14 * | |
15 * Redistribution and use in source and binary forms, with or without | |
16 * modification, are permitted provided that the following conditions | |
17 * are met: | |
18 * | |
19 * Redistributions of source code must retain the above copyright | |
20 * notice, this list of conditions and the following disclaimer. | |
21 * | |
22 * Redistributions in binary form must reproduce the above | |
23 * copyright notice, this list of conditions and the following | |
24 * disclaimer in the documentation and/or other materials provided | |
25 * with the distribution. | |
26 * | |
27 * Neither the name of the Cisco Systems, Inc. nor the names of its | |
28 * contributors may be used to endorse or promote products derived | |
29 * from this software without specific prior written permission. | |
30 * | |
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
34 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
35 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | |
36 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
37 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
38 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
42 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
43 * | |
44 */ | |
45 | |
46 #ifdef HAVE_CONFIG_H | |
47 #include <config.h> | |
48 #endif | |
49 | |
50 #define ALIGN_32 0 | |
51 | |
52 #include "aes_icm.h" | |
53 #include "alloc.h" | |
54 | |
55 | |
56 debug_module_t mod_aes_icm = { | |
57 0, /* debugging is off by default */ | |
58 "aes icm" /* printable module name */ | |
59 }; | |
60 | |
61 /* | |
62 * integer counter mode works as follows: | |
63 * | |
64 * 16 bits | |
65 * <-----> | |
66 * +------+------+------+------+------+------+------+------+ | |
67 * | nonce | pakcet index | ctr |---+ | |
68 * +------+------+------+------+------+------+------+------+ | | |
69 * | | |
70 * +------+------+------+------+------+------+------+------+ v | |
71 * | salt |000000|->(+) | |
72 * +------+------+------+------+------+------+------+------+ | | |
73 * | | |
74 * +---------+ | |
75 * | encrypt | | |
76 * +---------+ | |
77 * | | |
78 * +------+------+------+------+------+------+------+------+ | | |
79 * | keystream block |<--+ | |
80 * +------+------+------+------+------+------+------+------+ | |
81 * | |
82 * All fields are big-endian | |
83 * | |
84 * ctr is the block counter, which increments from zero for | |
85 * each packet (16 bits wide) | |
86 * | |
87 * packet index is distinct for each packet (48 bits wide) | |
88 * | |
89 * nonce can be distinct across many uses of the same key, or | |
90 * can be a fixed value per key, or can be per-packet randomness | |
91 * (64 bits) | |
92 * | |
93 */ | |
94 | |
95 err_status_t | |
96 aes_icm_alloc_ismacryp(cipher_t **c, int key_len, int forIsmacryp) { | |
97 extern cipher_type_t aes_icm; | |
98 uint8_t *pointer; | |
99 int tmp; | |
100 | |
101 debug_print(mod_aes_icm, | |
102 "allocating cipher with key length %d", key_len); | |
103 | |
104 /* | |
105 * Ismacryp, for example, uses 16 byte key + 8 byte | |
106 * salt so this function is called with key_len = 24. | |
107 * The check for key_len = 30/38/46 does not apply. Our usage | |
108 * of aes functions with key_len = values other than 30 | |
109 * has not broken anything. Don't know what would be the | |
110 * effect of skipping this check for srtp in general. | |
111 */ | |
112 if (!(forIsmacryp && key_len > 16 && key_len < 30) && | |
113 key_len != 30 && key_len != 38 && key_len != 46) | |
114 return err_status_bad_param; | |
115 | |
116 /* allocate memory a cipher of type aes_icm */ | |
117 tmp = (sizeof(aes_icm_ctx_t) + sizeof(cipher_t)); | |
118 pointer = (uint8_t*)crypto_alloc(tmp); | |
119 if (pointer == NULL) | |
120 return err_status_alloc_fail; | |
121 | |
122 /* set pointers */ | |
123 *c = (cipher_t *)pointer; | |
124 switch (key_len) { | |
125 case 46: | |
126 (*c)->algorithm = AES_256_ICM; | |
127 break; | |
128 case 38: | |
129 (*c)->algorithm = AES_192_ICM; | |
130 break; | |
131 default: | |
132 (*c)->algorithm = AES_128_ICM; | |
133 break; | |
134 } | |
135 (*c)->type = &aes_icm; | |
136 (*c)->state = pointer + sizeof(cipher_t); | |
137 | |
138 /* increment ref_count */ | |
139 aes_icm.ref_count++; | |
140 | |
141 /* set key size */ | |
142 (*c)->key_len = key_len; | |
143 | |
144 return err_status_ok; | |
145 } | |
146 | |
147 err_status_t aes_icm_alloc(cipher_t **c, int key_len, int forIsmacryp) { | |
148 return aes_icm_alloc_ismacryp(c, key_len, 0); | |
149 } | |
150 | |
151 err_status_t | |
152 aes_icm_dealloc(cipher_t *c) { | |
153 extern cipher_type_t aes_icm; | |
154 | |
155 /* zeroize entire state*/ | |
156 octet_string_set_to_zero((uint8_t *)c, | |
157 sizeof(aes_icm_ctx_t) + sizeof(cipher_t)); | |
158 | |
159 /* free memory */ | |
160 crypto_free(c); | |
161 | |
162 /* decrement ref_count */ | |
163 aes_icm.ref_count--; | |
164 | |
165 return err_status_ok; | |
166 } | |
167 | |
168 | |
169 /* | |
170 * aes_icm_context_init(...) initializes the aes_icm_context | |
171 * using the value in key[]. | |
172 * | |
173 * the key is the secret key | |
174 * | |
175 * the salt is unpredictable (but not necessarily secret) data which | |
176 * randomizes the starting point in the keystream | |
177 */ | |
178 | |
179 err_status_t | |
180 aes_icm_context_init(aes_icm_ctx_t *c, const uint8_t *key, int key_len) { | |
181 err_status_t status; | |
182 int base_key_len, copy_len; | |
183 | |
184 if (key_len > 16 && key_len < 30) /* Ismacryp */ | |
185 base_key_len = 16; | |
186 else if (key_len == 30 || key_len == 38 || key_len == 46) | |
187 base_key_len = key_len - 14; | |
188 else | |
189 return err_status_bad_param; | |
190 | |
191 /* | |
192 * set counter and initial values to 'offset' value, being careful not to | |
193 * go past the end of the key buffer | |
194 */ | |
195 v128_set_to_zero(&c->counter); | |
196 v128_set_to_zero(&c->offset); | |
197 | |
198 copy_len = key_len - base_key_len; | |
199 /* force last two octets of the offset to be left zero (for srtp compatibility
) */ | |
200 if (copy_len > 14) | |
201 copy_len = 14; | |
202 | |
203 memcpy(&c->counter, key + base_key_len, copy_len); | |
204 memcpy(&c->offset, key + base_key_len, copy_len); | |
205 | |
206 debug_print(mod_aes_icm, | |
207 "key: %s", octet_string_hex_string(key, base_key_len)); | |
208 debug_print(mod_aes_icm, | |
209 "offset: %s", v128_hex_string(&c->offset)); | |
210 | |
211 /* expand key */ | |
212 status = aes_expand_encryption_key(key, base_key_len, &c->expanded_key); | |
213 if (status) { | |
214 v128_set_to_zero(&c->counter); | |
215 v128_set_to_zero(&c->offset); | |
216 return status; | |
217 } | |
218 | |
219 /* indicate that the keystream_buffer is empty */ | |
220 c->bytes_in_buffer = 0; | |
221 | |
222 return err_status_ok; | |
223 } | |
224 | |
225 /* | |
226 * aes_icm_set_octet(c, i) sets the counter of the context which it is | |
227 * passed so that the next octet of keystream that will be generated | |
228 * is the ith octet | |
229 */ | |
230 | |
231 err_status_t | |
232 aes_icm_set_octet(aes_icm_ctx_t *c, | |
233 uint64_t octet_num) { | |
234 | |
235 #ifdef NO_64BIT_MATH | |
236 int tail_num = low32(octet_num) & 0x0f; | |
237 /* 64-bit right-shift 4 */ | |
238 uint64_t block_num = make64(high32(octet_num) >> 4, | |
239 ((high32(octet_num) &
0x0f)<<(32-4)) | | |
240 (low32(octet_num) >>
4)); | |
241 #else | |
242 int tail_num = (int)(octet_num % 16); | |
243 uint64_t block_num = octet_num / 16; | |
244 #endif | |
245 | |
246 | |
247 /* set counter value */ | |
248 /* FIX - There's no way this is correct */ | |
249 c->counter.v64[0] = c->offset.v64[0]; | |
250 #ifdef NO_64BIT_MATH | |
251 c->counter.v64[0] = make64(high32(c->offset.v64[0]) ^ high32(block_num), | |
252 low32(c->offset.v64[0])
^ low32(block_num)); | |
253 #else | |
254 c->counter.v64[0] = c->offset.v64[0] ^ block_num; | |
255 #endif | |
256 | |
257 debug_print(mod_aes_icm, | |
258 "set_octet: %s", v128_hex_string(&c->counter)); | |
259 | |
260 /* fill keystream buffer, if needed */ | |
261 if (tail_num) { | |
262 v128_copy(&c->keystream_buffer, &c->counter); | |
263 aes_encrypt(&c->keystream_buffer, &c->expanded_key); | |
264 c->bytes_in_buffer = sizeof(v128_t); | |
265 | |
266 debug_print(mod_aes_icm, "counter: %s", | |
267 v128_hex_string(&c->counter)); | |
268 debug_print(mod_aes_icm, "ciphertext: %s", | |
269 v128_hex_string(&c->keystream_buffer)); | |
270 | |
271 /* indicate number of bytes in keystream_buffer */ | |
272 c->bytes_in_buffer = sizeof(v128_t) - tail_num; | |
273 | |
274 } else { | |
275 | |
276 /* indicate that keystream_buffer is empty */ | |
277 c->bytes_in_buffer = 0; | |
278 } | |
279 | |
280 return err_status_ok; | |
281 } | |
282 | |
283 /* | |
284 * aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with | |
285 * the offset | |
286 */ | |
287 | |
288 err_status_t | |
289 aes_icm_set_iv(aes_icm_ctx_t *c, void *iv, int direction) { | |
290 v128_t nonce; | |
291 | |
292 /* set nonce (for alignment) */ | |
293 v128_copy_octet_string(&nonce, iv); | |
294 | |
295 debug_print(mod_aes_icm, | |
296 "setting iv: %s", v128_hex_string(&nonce)); | |
297 | |
298 v128_xor(&c->counter, &c->offset, &nonce); | |
299 | |
300 debug_print(mod_aes_icm, | |
301 "set_counter: %s", v128_hex_string(&c->counter)); | |
302 | |
303 /* indicate that the keystream_buffer is empty */ | |
304 c->bytes_in_buffer = 0; | |
305 | |
306 return err_status_ok; | |
307 } | |
308 | |
309 | |
310 | |
311 /* | |
312 * aes_icm_advance(...) refills the keystream_buffer and | |
313 * advances the block index of the sicm_context forward by one | |
314 * | |
315 * this is an internal, hopefully inlined function | |
316 */ | |
317 | |
318 static inline void | |
319 aes_icm_advance_ismacryp(aes_icm_ctx_t *c, uint8_t forIsmacryp) { | |
320 /* fill buffer with new keystream */ | |
321 v128_copy(&c->keystream_buffer, &c->counter); | |
322 aes_encrypt(&c->keystream_buffer, &c->expanded_key); | |
323 c->bytes_in_buffer = sizeof(v128_t); | |
324 | |
325 debug_print(mod_aes_icm, "counter: %s", | |
326 v128_hex_string(&c->counter)); | |
327 debug_print(mod_aes_icm, "ciphertext: %s", | |
328 v128_hex_string(&c->keystream_buffer)); | |
329 | |
330 /* clock counter forward */ | |
331 | |
332 if (forIsmacryp) { | |
333 uint32_t temp; | |
334 //alex's clock counter forward | |
335 temp = ntohl(c->counter.v32[3]); | |
336 ++temp; | |
337 c->counter.v32[3] = htonl(temp); | |
338 } else { | |
339 if (!++(c->counter.v8[15])) | |
340 ++(c->counter.v8[14]); | |
341 } | |
342 } | |
343 | |
344 /*e | |
345 * icm_encrypt deals with the following cases: | |
346 * | |
347 * bytes_to_encr < bytes_in_buffer | |
348 * - add keystream into data | |
349 * | |
350 * bytes_to_encr > bytes_in_buffer | |
351 * - add keystream into data until keystream_buffer is depleted | |
352 * - loop over blocks, filling keystream_buffer and then | |
353 * adding keystream into data | |
354 * - fill buffer then add in remaining (< 16) bytes of keystream | |
355 */ | |
356 | |
357 err_status_t | |
358 aes_icm_encrypt_ismacryp(aes_icm_ctx_t *c, | |
359 unsigned char *buf, unsigned int *enc_len, | |
360 int forIsmacryp) { | |
361 unsigned int bytes_to_encr = *enc_len; | |
362 unsigned int i; | |
363 uint32_t *b; | |
364 | |
365 /* check that there's enough segment left but not for ismacryp*/ | |
366 if (!forIsmacryp && (bytes_to_encr + htons(c->counter.v16[7])) > 0xffff) | |
367 return err_status_terminus; | |
368 | |
369 debug_print(mod_aes_icm, "block index: %d", | |
370 htons(c->counter.v16[7])); | |
371 if (bytes_to_encr <= (unsigned int)c->bytes_in_buffer) { | |
372 | |
373 /* deal with odd case of small bytes_to_encr */ | |
374 for (i = (sizeof(v128_t) - c->bytes_in_buffer); | |
375 i < (sizeof(v128_t) - c->bytes_in_buffer + bytes_to_encr); i++)
| |
376 { | |
377 *buf++ ^= c->keystream_buffer.v8[i]; | |
378 } | |
379 | |
380 c->bytes_in_buffer -= bytes_to_encr; | |
381 | |
382 /* return now to avoid the main loop */ | |
383 return err_status_ok; | |
384 | |
385 } else { | |
386 | |
387 /* encrypt bytes until the remaining data is 16-byte aligned */ | |
388 for (i=(sizeof(v128_t) - c->bytes_in_buffer); i < sizeof(v128_t); i++) | |
389 *buf++ ^= c->keystream_buffer.v8[i]; | |
390 | |
391 bytes_to_encr -= c->bytes_in_buffer; | |
392 c->bytes_in_buffer = 0; | |
393 | |
394 } | |
395 | |
396 /* now loop over entire 16-byte blocks of keystream */ | |
397 for (i=0; i < (bytes_to_encr/sizeof(v128_t)); i++) { | |
398 | |
399 /* fill buffer with new keystream */ | |
400 aes_icm_advance_ismacryp(c, forIsmacryp); | |
401 | |
402 /* | |
403 * add keystream into the data buffer (this would be a lot faster | |
404 * if we could assume 32-bit alignment!) | |
405 */ | |
406 | |
407 #if ALIGN_32 | |
408 b = (uint32_t *)buf; | |
409 *b++ ^= c->keystream_buffer.v32[0]; | |
410 *b++ ^= c->keystream_buffer.v32[1]; | |
411 *b++ ^= c->keystream_buffer.v32[2]; | |
412 *b++ ^= c->keystream_buffer.v32[3]; | |
413 buf = (uint8_t *)b; | |
414 #else | |
415 if ((((unsigned long) buf) & 0x03) != 0) { | |
416 *buf++ ^= c->keystream_buffer.v8[0]; | |
417 *buf++ ^= c->keystream_buffer.v8[1]; | |
418 *buf++ ^= c->keystream_buffer.v8[2]; | |
419 *buf++ ^= c->keystream_buffer.v8[3]; | |
420 *buf++ ^= c->keystream_buffer.v8[4]; | |
421 *buf++ ^= c->keystream_buffer.v8[5]; | |
422 *buf++ ^= c->keystream_buffer.v8[6]; | |
423 *buf++ ^= c->keystream_buffer.v8[7]; | |
424 *buf++ ^= c->keystream_buffer.v8[8]; | |
425 *buf++ ^= c->keystream_buffer.v8[9]; | |
426 *buf++ ^= c->keystream_buffer.v8[10]; | |
427 *buf++ ^= c->keystream_buffer.v8[11]; | |
428 *buf++ ^= c->keystream_buffer.v8[12]; | |
429 *buf++ ^= c->keystream_buffer.v8[13]; | |
430 *buf++ ^= c->keystream_buffer.v8[14]; | |
431 *buf++ ^= c->keystream_buffer.v8[15]; | |
432 } else { | |
433 b = (uint32_t *)buf; | |
434 *b++ ^= c->keystream_buffer.v32[0]; | |
435 *b++ ^= c->keystream_buffer.v32[1]; | |
436 *b++ ^= c->keystream_buffer.v32[2]; | |
437 *b++ ^= c->keystream_buffer.v32[3]; | |
438 buf = (uint8_t *)b; | |
439 } | |
440 #endif /* #if ALIGN_32 */ | |
441 | |
442 } | |
443 | |
444 /* if there is a tail end of the data, process it */ | |
445 if ((bytes_to_encr & 0xf) != 0) { | |
446 | |
447 /* fill buffer with new keystream */ | |
448 aes_icm_advance_ismacryp(c, forIsmacryp); | |
449 | |
450 for (i=0; i < (bytes_to_encr & 0xf); i++) | |
451 *buf++ ^= c->keystream_buffer.v8[i]; | |
452 | |
453 /* reset the keystream buffer size to right value */ | |
454 c->bytes_in_buffer = sizeof(v128_t) - i; | |
455 } else { | |
456 | |
457 /* no tail, so just reset the keystream buffer size to zero */ | |
458 c->bytes_in_buffer = 0; | |
459 | |
460 } | |
461 | |
462 return err_status_ok; | |
463 } | |
464 | |
465 err_status_t | |
466 aes_icm_encrypt(aes_icm_ctx_t *c, unsigned char *buf, unsigned int *enc_len) { | |
467 return aes_icm_encrypt_ismacryp(c, buf, enc_len, 0); | |
468 } | |
469 | |
470 err_status_t | |
471 aes_icm_output(aes_icm_ctx_t *c, uint8_t *buffer, unsigned int num_octets_to_out
put) { | |
472 unsigned int len = num_octets_to_output; | |
473 | |
474 /* zeroize the buffer */ | |
475 octet_string_set_to_zero(buffer, num_octets_to_output); | |
476 | |
477 /* exor keystream into buffer */ | |
478 return aes_icm_encrypt(c, buffer, &len); | |
479 } | |
480 | |
481 uint16_t | |
482 aes_icm_bytes_encrypted(aes_icm_ctx_t *c) { | |
483 return htons(c->counter.v16[7]); | |
484 } | |
485 | |
486 char | |
487 aes_icm_description[] = "aes integer counter mode"; | |
488 | |
489 uint8_t aes_icm_test_case_0_key[30] = { | |
490 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, | |
491 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c, | |
492 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, | |
493 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd | |
494 }; | |
495 | |
496 uint8_t aes_icm_test_case_0_nonce[16] = { | |
497 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
498 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
499 }; | |
500 | |
501 uint8_t aes_icm_test_case_0_plaintext[32] = { | |
502 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
503 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
504 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
505 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
506 }; | |
507 | |
508 uint8_t aes_icm_test_case_0_ciphertext[32] = { | |
509 0xe0, 0x3e, 0xad, 0x09, 0x35, 0xc9, 0x5e, 0x80, | |
510 0xe1, 0x66, 0xb1, 0x6d, 0xd9, 0x2b, 0x4e, 0xb4, | |
511 0xd2, 0x35, 0x13, 0x16, 0x2b, 0x02, 0xd0, 0xf7, | |
512 0x2a, 0x43, 0xa2, 0xfe, 0x4a, 0x5f, 0x97, 0xab | |
513 }; | |
514 | |
515 cipher_test_case_t aes_icm_test_case_0 = { | |
516 30, /* octets in key */ | |
517 aes_icm_test_case_0_key, /* key */ | |
518 aes_icm_test_case_0_nonce, /* packet index */ | |
519 32, /* octets in plaintext */ | |
520 aes_icm_test_case_0_plaintext, /* plaintext */ | |
521 32, /* octets in ciphertext */ | |
522 aes_icm_test_case_0_ciphertext, /* ciphertext */ | |
523 0, | |
524 NULL, | |
525 0, | |
526 NULL /* pointer to next testcase */ | |
527 }; | |
528 | |
529 uint8_t aes_icm_test_case_1_key[46] = { | |
530 0x57, 0xf8, 0x2f, 0xe3, 0x61, 0x3f, 0xd1, 0x70, | |
531 0xa8, 0x5e, 0xc9, 0x3c, 0x40, 0xb1, 0xf0, 0x92, | |
532 0x2e, 0xc4, 0xcb, 0x0d, 0xc0, 0x25, 0xb5, 0x82, | |
533 0x72, 0x14, 0x7c, 0xc4, 0x38, 0x94, 0x4a, 0x98, | |
534 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, | |
535 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd | |
536 }; | |
537 | |
538 uint8_t aes_icm_test_case_1_nonce[16] = { | |
539 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
540 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
541 }; | |
542 | |
543 uint8_t aes_icm_test_case_1_plaintext[32] = { | |
544 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
545 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
546 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
547 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
548 }; | |
549 | |
550 uint8_t aes_icm_test_case_1_ciphertext[32] = { | |
551 0x92, 0xbd, 0xd2, 0x8a, 0x93, 0xc3, 0xf5, 0x25, | |
552 0x11, 0xc6, 0x77, 0xd0, 0x8b, 0x55, 0x15, 0xa4, | |
553 0x9d, 0xa7, 0x1b, 0x23, 0x78, 0xa8, 0x54, 0xf6, | |
554 0x70, 0x50, 0x75, 0x6d, 0xed, 0x16, 0x5b, 0xac | |
555 }; | |
556 | |
557 cipher_test_case_t aes_icm_test_case_1 = { | |
558 46, /* octets in key */ | |
559 aes_icm_test_case_1_key, /* key */ | |
560 aes_icm_test_case_1_nonce, /* packet index */ | |
561 32, /* octets in plaintext */ | |
562 aes_icm_test_case_1_plaintext, /* plaintext */ | |
563 32, /* octets in ciphertext */ | |
564 aes_icm_test_case_1_ciphertext, /* ciphertext */ | |
565 0, | |
566 NULL, | |
567 0, | |
568 &aes_icm_test_case_0 /* pointer to next testcase */ | |
569 }; | |
570 | |
571 | |
572 | |
573 /* | |
574 * note: the encrypt function is identical to the decrypt function | |
575 */ | |
576 | |
577 cipher_type_t aes_icm = { | |
578 (cipher_alloc_func_t) aes_icm_alloc, | |
579 (cipher_dealloc_func_t) aes_icm_dealloc, | |
580 (cipher_init_func_t) aes_icm_context_init, | |
581 (cipher_set_aad_func_t) 0, | |
582 (cipher_encrypt_func_t) aes_icm_encrypt, | |
583 (cipher_decrypt_func_t) aes_icm_encrypt, | |
584 (cipher_set_iv_func_t) aes_icm_set_iv, | |
585 (cipher_get_tag_func_t) 0, | |
586 (char *) aes_icm_description, | |
587 (int) 0, /* instance count */ | |
588 (cipher_test_case_t *) &aes_icm_test_case_1, | |
589 (debug_module_t *) &mod_aes_icm, | |
590 (cipher_type_id_t) AES_ICM | |
591 }; | |
592 | |
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