igetest.c 18 KB

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  1. /* test/igetest.c -*- mode:C; c-file-style: "eay" -*- */
  2. /* ====================================================================
  3. * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions
  7. * are met:
  8. *
  9. * 1. Redistributions of source code must retain the above copyright
  10. * notice, this list of conditions and the following disclaimer.
  11. *
  12. * 2. Redistributions in binary form must reproduce the above copyright
  13. * notice, this list of conditions and the following disclaimer in
  14. * the documentation and/or other materials provided with the
  15. * distribution.
  16. *
  17. * 3. All advertising materials mentioning features or use of this
  18. * software must display the following acknowledgment:
  19. * "This product includes software developed by the OpenSSL Project
  20. * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  21. *
  22. * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  23. * endorse or promote products derived from this software without
  24. * prior written permission. For written permission, please contact
  25. * openssl-core@openssl.org.
  26. *
  27. * 5. Products derived from this software may not be called "OpenSSL"
  28. * nor may "OpenSSL" appear in their names without prior written
  29. * permission of the OpenSSL Project.
  30. *
  31. * 6. Redistributions of any form whatsoever must retain the following
  32. * acknowledgment:
  33. * "This product includes software developed by the OpenSSL Project
  34. * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  35. *
  36. * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  37. * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  38. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  39. * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
  40. * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  41. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  42. * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  43. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  44. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  45. * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  46. * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  47. * OF THE POSSIBILITY OF SUCH DAMAGE.
  48. * ====================================================================
  49. *
  50. */
  51. #include <openssl/aes.h>
  52. #include <openssl/rand.h>
  53. #include <stdio.h>
  54. #include <string.h>
  55. #include <assert.h>
  56. #define TEST_SIZE 128
  57. #define BIG_TEST_SIZE 10240
  58. static void hexdump(FILE *f, const char *title, const unsigned char *s, int l)
  59. {
  60. int n = 0;
  61. fprintf(f, "%s", title);
  62. for (; n < l; ++n) {
  63. if ((n % 16) == 0)
  64. fprintf(f, "\n%04x", n);
  65. fprintf(f, " %02x", s[n]);
  66. }
  67. fprintf(f, "\n");
  68. }
  69. #define MAX_VECTOR_SIZE 64
  70. struct ige_test {
  71. const unsigned char key[16];
  72. const unsigned char iv[32];
  73. const unsigned char in[MAX_VECTOR_SIZE];
  74. const unsigned char out[MAX_VECTOR_SIZE];
  75. const size_t length;
  76. const int encrypt;
  77. };
  78. static struct ige_test const ige_test_vectors[] = {
  79. {{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  80. 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}, /* key */
  81. {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  82. 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  83. 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
  84. 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f}, /* iv */
  85. {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  86. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  87. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  88. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* in */
  89. {0x1a, 0x85, 0x19, 0xa6, 0x55, 0x7b, 0xe6, 0x52,
  90. 0xe9, 0xda, 0x8e, 0x43, 0xda, 0x4e, 0xf4, 0x45,
  91. 0x3c, 0xf4, 0x56, 0xb4, 0xca, 0x48, 0x8a, 0xa3,
  92. 0x83, 0xc7, 0x9c, 0x98, 0xb3, 0x47, 0x97, 0xcb}, /* out */
  93. 32, AES_ENCRYPT}, /* test vector 0 */
  94. {{0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20,
  95. 0x61, 0x6e, 0x20, 0x69, 0x6d, 0x70, 0x6c, 0x65}, /* key */
  96. {0x6d, 0x65, 0x6e, 0x74, 0x61, 0x74, 0x69, 0x6f,
  97. 0x6e, 0x20, 0x6f, 0x66, 0x20, 0x49, 0x47, 0x45,
  98. 0x20, 0x6d, 0x6f, 0x64, 0x65, 0x20, 0x66, 0x6f,
  99. 0x72, 0x20, 0x4f, 0x70, 0x65, 0x6e, 0x53, 0x53}, /* iv */
  100. {0x4c, 0x2e, 0x20, 0x4c, 0x65, 0x74, 0x27, 0x73,
  101. 0x20, 0x68, 0x6f, 0x70, 0x65, 0x20, 0x42, 0x65,
  102. 0x6e, 0x20, 0x67, 0x6f, 0x74, 0x20, 0x69, 0x74,
  103. 0x20, 0x72, 0x69, 0x67, 0x68, 0x74, 0x21, 0x0a}, /* in */
  104. {0x99, 0x70, 0x64, 0x87, 0xa1, 0xcd, 0xe6, 0x13,
  105. 0xbc, 0x6d, 0xe0, 0xb6, 0xf2, 0x4b, 0x1c, 0x7a,
  106. 0xa4, 0x48, 0xc8, 0xb9, 0xc3, 0x40, 0x3e, 0x34,
  107. 0x67, 0xa8, 0xca, 0xd8, 0x93, 0x40, 0xf5, 0x3b}, /* out */
  108. 32, AES_DECRYPT}, /* test vector 1 */
  109. };
  110. struct bi_ige_test {
  111. const unsigned char key1[32];
  112. const unsigned char key2[32];
  113. const unsigned char iv[64];
  114. const unsigned char in[MAX_VECTOR_SIZE];
  115. const unsigned char out[MAX_VECTOR_SIZE];
  116. const size_t keysize;
  117. const size_t length;
  118. const int encrypt;
  119. };
  120. static struct bi_ige_test const bi_ige_test_vectors[] = {
  121. {{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  122. 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}, /* key1 */
  123. {0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
  124. 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f}, /* key2 */
  125. {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  126. 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  127. 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
  128. 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
  129. 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
  130. 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
  131. 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
  132. 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f}, /* iv */
  133. {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  134. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  135. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  136. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* in */
  137. {0x14, 0x40, 0x6f, 0xae, 0xa2, 0x79, 0xf2, 0x56,
  138. 0x1f, 0x86, 0xeb, 0x3b, 0x7d, 0xff, 0x53, 0xdc,
  139. 0x4e, 0x27, 0x0c, 0x03, 0xde, 0x7c, 0xe5, 0x16,
  140. 0x6a, 0x9c, 0x20, 0x33, 0x9d, 0x33, 0xfe, 0x12}, /* out */
  141. 16, 32, AES_ENCRYPT}, /* test vector 0 */
  142. {{0x58, 0x0a, 0x06, 0xe9, 0x97, 0x07, 0x59, 0x5c,
  143. 0x9e, 0x19, 0xd2, 0xa7, 0xbb, 0x40, 0x2b, 0x7a,
  144. 0xc7, 0xd8, 0x11, 0x9e, 0x4c, 0x51, 0x35, 0x75,
  145. 0x64, 0x28, 0x0f, 0x23, 0xad, 0x74, 0xac, 0x37}, /* key1 */
  146. {0xd1, 0x80, 0xa0, 0x31, 0x47, 0xa3, 0x11, 0x13,
  147. 0x86, 0x26, 0x9e, 0x6d, 0xff, 0xaf, 0x72, 0x74,
  148. 0x5b, 0xa2, 0x35, 0x81, 0xd2, 0xa6, 0x3d, 0x21,
  149. 0x67, 0x7b, 0x58, 0xa8, 0x18, 0xf9, 0x72, 0xe4}, /* key2 */
  150. {0x80, 0x3d, 0xbd, 0x4c, 0xe6, 0x7b, 0x06, 0xa9,
  151. 0x53, 0x35, 0xd5, 0x7e, 0x71, 0xc1, 0x70, 0x70,
  152. 0x74, 0x9a, 0x00, 0x28, 0x0c, 0xbf, 0x6c, 0x42,
  153. 0x9b, 0xa4, 0xdd, 0x65, 0x11, 0x77, 0x7c, 0x67,
  154. 0xfe, 0x76, 0x0a, 0xf0, 0xd5, 0xc6, 0x6e, 0x6a,
  155. 0xe7, 0x5e, 0x4c, 0xf2, 0x7e, 0x9e, 0xf9, 0x20,
  156. 0x0e, 0x54, 0x6f, 0x2d, 0x8a, 0x8d, 0x7e, 0xbd,
  157. 0x48, 0x79, 0x37, 0x99, 0xff, 0x27, 0x93, 0xa3}, /* iv */
  158. {0xf1, 0x54, 0x3d, 0xca, 0xfe, 0xb5, 0xef, 0x1c,
  159. 0x4f, 0xa6, 0x43, 0xf6, 0xe6, 0x48, 0x57, 0xf0,
  160. 0xee, 0x15, 0x7f, 0xe3, 0xe7, 0x2f, 0xd0, 0x2f,
  161. 0x11, 0x95, 0x7a, 0x17, 0x00, 0xab, 0xa7, 0x0b,
  162. 0xbe, 0x44, 0x09, 0x9c, 0xcd, 0xac, 0xa8, 0x52,
  163. 0xa1, 0x8e, 0x7b, 0x75, 0xbc, 0xa4, 0x92, 0x5a,
  164. 0xab, 0x46, 0xd3, 0x3a, 0xa0, 0xd5, 0x35, 0x1c,
  165. 0x55, 0xa4, 0xb3, 0xa8, 0x40, 0x81, 0xa5, 0x0b}, /* in */
  166. {0x42, 0xe5, 0x28, 0x30, 0x31, 0xc2, 0xa0, 0x23,
  167. 0x68, 0x49, 0x4e, 0xb3, 0x24, 0x59, 0x92, 0x79,
  168. 0xc1, 0xa5, 0xcc, 0xe6, 0x76, 0x53, 0xb1, 0xcf,
  169. 0x20, 0x86, 0x23, 0xe8, 0x72, 0x55, 0x99, 0x92,
  170. 0x0d, 0x16, 0x1c, 0x5a, 0x2f, 0xce, 0xcb, 0x51,
  171. 0xe2, 0x67, 0xfa, 0x10, 0xec, 0xcd, 0x3d, 0x67,
  172. 0xa5, 0xe6, 0xf7, 0x31, 0x26, 0xb0, 0x0d, 0x76,
  173. 0x5e, 0x28, 0xdc, 0x7f, 0x01, 0xc5, 0xa5, 0x4c}, /* out */
  174. 32, 64, AES_ENCRYPT}, /* test vector 1 */
  175. };
  176. static int run_test_vectors(void)
  177. {
  178. unsigned int n;
  179. int errs = 0;
  180. for (n = 0; n < sizeof(ige_test_vectors) / sizeof(ige_test_vectors[0]);
  181. ++n) {
  182. const struct ige_test *const v = &ige_test_vectors[n];
  183. AES_KEY key;
  184. unsigned char buf[MAX_VECTOR_SIZE];
  185. unsigned char iv[AES_BLOCK_SIZE * 2];
  186. assert(v->length <= MAX_VECTOR_SIZE);
  187. if (v->encrypt == AES_ENCRYPT)
  188. AES_set_encrypt_key(v->key, 8 * sizeof v->key, &key);
  189. else
  190. AES_set_decrypt_key(v->key, 8 * sizeof v->key, &key);
  191. memcpy(iv, v->iv, sizeof iv);
  192. AES_ige_encrypt(v->in, buf, v->length, &key, iv, v->encrypt);
  193. if (memcmp(v->out, buf, v->length)) {
  194. printf("IGE test vector %d failed\n", n);
  195. hexdump(stdout, "key", v->key, sizeof v->key);
  196. hexdump(stdout, "iv", v->iv, sizeof v->iv);
  197. hexdump(stdout, "in", v->in, v->length);
  198. hexdump(stdout, "expected", v->out, v->length);
  199. hexdump(stdout, "got", buf, v->length);
  200. ++errs;
  201. }
  202. /* try with in == out */
  203. memcpy(iv, v->iv, sizeof iv);
  204. memcpy(buf, v->in, v->length);
  205. AES_ige_encrypt(buf, buf, v->length, &key, iv, v->encrypt);
  206. if (memcmp(v->out, buf, v->length)) {
  207. printf("IGE test vector %d failed (with in == out)\n", n);
  208. hexdump(stdout, "key", v->key, sizeof v->key);
  209. hexdump(stdout, "iv", v->iv, sizeof v->iv);
  210. hexdump(stdout, "in", v->in, v->length);
  211. hexdump(stdout, "expected", v->out, v->length);
  212. hexdump(stdout, "got", buf, v->length);
  213. ++errs;
  214. }
  215. }
  216. for (n = 0;
  217. n < sizeof(bi_ige_test_vectors) / sizeof(bi_ige_test_vectors[0]);
  218. ++n) {
  219. const struct bi_ige_test *const v = &bi_ige_test_vectors[n];
  220. AES_KEY key1;
  221. AES_KEY key2;
  222. unsigned char buf[MAX_VECTOR_SIZE];
  223. assert(v->length <= MAX_VECTOR_SIZE);
  224. if (v->encrypt == AES_ENCRYPT) {
  225. AES_set_encrypt_key(v->key1, 8 * v->keysize, &key1);
  226. AES_set_encrypt_key(v->key2, 8 * v->keysize, &key2);
  227. } else {
  228. AES_set_decrypt_key(v->key1, 8 * v->keysize, &key1);
  229. AES_set_decrypt_key(v->key2, 8 * v->keysize, &key2);
  230. }
  231. AES_bi_ige_encrypt(v->in, buf, v->length, &key1, &key2, v->iv,
  232. v->encrypt);
  233. if (memcmp(v->out, buf, v->length)) {
  234. printf("Bidirectional IGE test vector %d failed\n", n);
  235. hexdump(stdout, "key 1", v->key1, sizeof v->key1);
  236. hexdump(stdout, "key 2", v->key2, sizeof v->key2);
  237. hexdump(stdout, "iv", v->iv, sizeof v->iv);
  238. hexdump(stdout, "in", v->in, v->length);
  239. hexdump(stdout, "expected", v->out, v->length);
  240. hexdump(stdout, "got", buf, v->length);
  241. ++errs;
  242. }
  243. }
  244. return errs;
  245. }
  246. int main(int argc, char **argv)
  247. {
  248. unsigned char rkey[16];
  249. unsigned char rkey2[16];
  250. AES_KEY key;
  251. AES_KEY key2;
  252. unsigned char plaintext[BIG_TEST_SIZE];
  253. unsigned char ciphertext[BIG_TEST_SIZE];
  254. unsigned char checktext[BIG_TEST_SIZE];
  255. unsigned char iv[AES_BLOCK_SIZE * 4];
  256. unsigned char saved_iv[AES_BLOCK_SIZE * 4];
  257. int err = 0;
  258. unsigned int n;
  259. unsigned matches;
  260. assert(BIG_TEST_SIZE >= TEST_SIZE);
  261. RAND_pseudo_bytes(rkey, sizeof rkey);
  262. RAND_pseudo_bytes(plaintext, sizeof plaintext);
  263. RAND_pseudo_bytes(iv, sizeof iv);
  264. memcpy(saved_iv, iv, sizeof saved_iv);
  265. /* Forward IGE only... */
  266. /* Straight encrypt/decrypt */
  267. AES_set_encrypt_key(rkey, 8 * sizeof rkey, &key);
  268. AES_ige_encrypt(plaintext, ciphertext, TEST_SIZE, &key, iv, AES_ENCRYPT);
  269. AES_set_decrypt_key(rkey, 8 * sizeof rkey, &key);
  270. memcpy(iv, saved_iv, sizeof iv);
  271. AES_ige_encrypt(ciphertext, checktext, TEST_SIZE, &key, iv, AES_DECRYPT);
  272. if (memcmp(checktext, plaintext, TEST_SIZE)) {
  273. printf("Encrypt+decrypt doesn't match\n");
  274. hexdump(stdout, "Plaintext", plaintext, TEST_SIZE);
  275. hexdump(stdout, "Checktext", checktext, TEST_SIZE);
  276. ++err;
  277. }
  278. /* Now check encrypt chaining works */
  279. AES_set_encrypt_key(rkey, 8 * sizeof rkey, &key);
  280. memcpy(iv, saved_iv, sizeof iv);
  281. AES_ige_encrypt(plaintext, ciphertext, TEST_SIZE / 2, &key, iv,
  282. AES_ENCRYPT);
  283. AES_ige_encrypt(plaintext + TEST_SIZE / 2,
  284. ciphertext + TEST_SIZE / 2, TEST_SIZE / 2,
  285. &key, iv, AES_ENCRYPT);
  286. AES_set_decrypt_key(rkey, 8 * sizeof rkey, &key);
  287. memcpy(iv, saved_iv, sizeof iv);
  288. AES_ige_encrypt(ciphertext, checktext, TEST_SIZE, &key, iv, AES_DECRYPT);
  289. if (memcmp(checktext, plaintext, TEST_SIZE)) {
  290. printf("Chained encrypt+decrypt doesn't match\n");
  291. hexdump(stdout, "Plaintext", plaintext, TEST_SIZE);
  292. hexdump(stdout, "Checktext", checktext, TEST_SIZE);
  293. ++err;
  294. }
  295. /* And check decrypt chaining */
  296. AES_set_encrypt_key(rkey, 8 * sizeof rkey, &key);
  297. memcpy(iv, saved_iv, sizeof iv);
  298. AES_ige_encrypt(plaintext, ciphertext, TEST_SIZE / 2, &key, iv,
  299. AES_ENCRYPT);
  300. AES_ige_encrypt(plaintext + TEST_SIZE / 2,
  301. ciphertext + TEST_SIZE / 2, TEST_SIZE / 2,
  302. &key, iv, AES_ENCRYPT);
  303. AES_set_decrypt_key(rkey, 8 * sizeof rkey, &key);
  304. memcpy(iv, saved_iv, sizeof iv);
  305. AES_ige_encrypt(ciphertext, checktext, TEST_SIZE / 2, &key, iv,
  306. AES_DECRYPT);
  307. AES_ige_encrypt(ciphertext + TEST_SIZE / 2,
  308. checktext + TEST_SIZE / 2, TEST_SIZE / 2, &key, iv,
  309. AES_DECRYPT);
  310. if (memcmp(checktext, plaintext, TEST_SIZE)) {
  311. printf("Chained encrypt+chained decrypt doesn't match\n");
  312. hexdump(stdout, "Plaintext", plaintext, TEST_SIZE);
  313. hexdump(stdout, "Checktext", checktext, TEST_SIZE);
  314. ++err;
  315. }
  316. /* make sure garble extends forwards only */
  317. AES_set_encrypt_key(rkey, 8 * sizeof rkey, &key);
  318. memcpy(iv, saved_iv, sizeof iv);
  319. AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv,
  320. AES_ENCRYPT);
  321. /* corrupt halfway through */
  322. ++ciphertext[sizeof ciphertext / 2];
  323. AES_set_decrypt_key(rkey, 8 * sizeof rkey, &key);
  324. memcpy(iv, saved_iv, sizeof iv);
  325. AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv,
  326. AES_DECRYPT);
  327. matches = 0;
  328. for (n = 0; n < sizeof checktext; ++n)
  329. if (checktext[n] == plaintext[n])
  330. ++matches;
  331. if (matches > sizeof checktext / 2 + sizeof checktext / 100) {
  332. printf("More than 51%% matches after garbling\n");
  333. ++err;
  334. }
  335. if (matches < sizeof checktext / 2) {
  336. printf("Garble extends backwards!\n");
  337. ++err;
  338. }
  339. /* Bi-directional IGE */
  340. /*
  341. * Note that we don't have to recover the IV, because chaining isn't
  342. */
  343. /* possible with biIGE, so the IV is not updated. */
  344. RAND_pseudo_bytes(rkey2, sizeof rkey2);
  345. /* Straight encrypt/decrypt */
  346. AES_set_encrypt_key(rkey, 8 * sizeof rkey, &key);
  347. AES_set_encrypt_key(rkey2, 8 * sizeof rkey2, &key2);
  348. AES_bi_ige_encrypt(plaintext, ciphertext, TEST_SIZE, &key, &key2, iv,
  349. AES_ENCRYPT);
  350. AES_set_decrypt_key(rkey, 8 * sizeof rkey, &key);
  351. AES_set_decrypt_key(rkey2, 8 * sizeof rkey2, &key2);
  352. AES_bi_ige_encrypt(ciphertext, checktext, TEST_SIZE, &key, &key2, iv,
  353. AES_DECRYPT);
  354. if (memcmp(checktext, plaintext, TEST_SIZE)) {
  355. printf("Encrypt+decrypt doesn't match\n");
  356. hexdump(stdout, "Plaintext", plaintext, TEST_SIZE);
  357. hexdump(stdout, "Checktext", checktext, TEST_SIZE);
  358. ++err;
  359. }
  360. /* make sure garble extends both ways */
  361. AES_set_encrypt_key(rkey, 8 * sizeof rkey, &key);
  362. AES_set_encrypt_key(rkey2, 8 * sizeof rkey2, &key2);
  363. AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv,
  364. AES_ENCRYPT);
  365. /* corrupt halfway through */
  366. ++ciphertext[sizeof ciphertext / 2];
  367. AES_set_decrypt_key(rkey, 8 * sizeof rkey, &key);
  368. AES_set_decrypt_key(rkey2, 8 * sizeof rkey2, &key2);
  369. AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv,
  370. AES_DECRYPT);
  371. matches = 0;
  372. for (n = 0; n < sizeof checktext; ++n)
  373. if (checktext[n] == plaintext[n])
  374. ++matches;
  375. if (matches > sizeof checktext / 100) {
  376. printf("More than 1%% matches after bidirectional garbling\n");
  377. ++err;
  378. }
  379. /* make sure garble extends both ways (2) */
  380. AES_set_encrypt_key(rkey, 8 * sizeof rkey, &key);
  381. AES_set_encrypt_key(rkey2, 8 * sizeof rkey2, &key2);
  382. AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv,
  383. AES_ENCRYPT);
  384. /* corrupt right at the end */
  385. ++ciphertext[sizeof ciphertext - 1];
  386. AES_set_decrypt_key(rkey, 8 * sizeof rkey, &key);
  387. AES_set_decrypt_key(rkey2, 8 * sizeof rkey2, &key2);
  388. AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv,
  389. AES_DECRYPT);
  390. matches = 0;
  391. for (n = 0; n < sizeof checktext; ++n)
  392. if (checktext[n] == plaintext[n])
  393. ++matches;
  394. if (matches > sizeof checktext / 100) {
  395. printf("More than 1%% matches after bidirectional garbling (2)\n");
  396. ++err;
  397. }
  398. /* make sure garble extends both ways (3) */
  399. AES_set_encrypt_key(rkey, 8 * sizeof rkey, &key);
  400. AES_set_encrypt_key(rkey2, 8 * sizeof rkey2, &key2);
  401. AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv,
  402. AES_ENCRYPT);
  403. /* corrupt right at the start */
  404. ++ciphertext[0];
  405. AES_set_decrypt_key(rkey, 8 * sizeof rkey, &key);
  406. AES_set_decrypt_key(rkey2, 8 * sizeof rkey2, &key2);
  407. AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv,
  408. AES_DECRYPT);
  409. matches = 0;
  410. for (n = 0; n < sizeof checktext; ++n)
  411. if (checktext[n] == plaintext[n])
  412. ++matches;
  413. if (matches > sizeof checktext / 100) {
  414. printf("More than 1%% matches after bidirectional garbling (3)\n");
  415. ++err;
  416. }
  417. err += run_test_vectors();
  418. return err;
  419. }