1 /* $OpenBSD: igetest.c,v 1.4 2018/07/17 17:06:49 tb Exp $ */ 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 52 #include <assert.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 57 #include <openssl/aes.h> 58 59 #define TEST_SIZE 128 60 #define BIG_TEST_SIZE 10240 61 62 static void hexdump(FILE *f,const char *title,const unsigned char *s,int l) 63 { 64 int n=0; 65 66 fprintf(f,"%s",title); 67 for( ; n < l ; ++n) 68 { 69 if((n%16) == 0) 70 fprintf(f,"\n%04x",n); 71 fprintf(f," %02x",s[n]); 72 } 73 fprintf(f,"\n"); 74 } 75 76 #define MAX_VECTOR_SIZE 64 77 78 struct ige_test 79 { 80 const unsigned char key[16]; 81 const unsigned char iv[32]; 82 const unsigned char in[MAX_VECTOR_SIZE]; 83 const unsigned char out[MAX_VECTOR_SIZE]; 84 const size_t length; 85 const int encrypt; 86 }; 87 88 static struct ige_test const ige_test_vectors[] = { 89 { { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 90 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f }, /* key */ 91 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 92 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 93 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 94 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f }, /* iv */ 95 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 96 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 97 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 98 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* in */ 99 { 0x1a, 0x85, 0x19, 0xa6, 0x55, 0x7b, 0xe6, 0x52, 100 0xe9, 0xda, 0x8e, 0x43, 0xda, 0x4e, 0xf4, 0x45, 101 0x3c, 0xf4, 0x56, 0xb4, 0xca, 0x48, 0x8a, 0xa3, 102 0x83, 0xc7, 0x9c, 0x98, 0xb3, 0x47, 0x97, 0xcb }, /* out */ 103 32, AES_ENCRYPT }, /* test vector 0 */ 104 105 { { 0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 106 0x61, 0x6e, 0x20, 0x69, 0x6d, 0x70, 0x6c, 0x65 }, /* key */ 107 { 0x6d, 0x65, 0x6e, 0x74, 0x61, 0x74, 0x69, 0x6f, 108 0x6e, 0x20, 0x6f, 0x66, 0x20, 0x49, 0x47, 0x45, 109 0x20, 0x6d, 0x6f, 0x64, 0x65, 0x20, 0x66, 0x6f, 110 0x72, 0x20, 0x4f, 0x70, 0x65, 0x6e, 0x53, 0x53 }, /* iv */ 111 { 0x4c, 0x2e, 0x20, 0x4c, 0x65, 0x74, 0x27, 0x73, 112 0x20, 0x68, 0x6f, 0x70, 0x65, 0x20, 0x42, 0x65, 113 0x6e, 0x20, 0x67, 0x6f, 0x74, 0x20, 0x69, 0x74, 114 0x20, 0x72, 0x69, 0x67, 0x68, 0x74, 0x21, 0x0a }, /* in */ 115 { 0x99, 0x70, 0x64, 0x87, 0xa1, 0xcd, 0xe6, 0x13, 116 0xbc, 0x6d, 0xe0, 0xb6, 0xf2, 0x4b, 0x1c, 0x7a, 117 0xa4, 0x48, 0xc8, 0xb9, 0xc3, 0x40, 0x3e, 0x34, 118 0x67, 0xa8, 0xca, 0xd8, 0x93, 0x40, 0xf5, 0x3b }, /* out */ 119 32, AES_DECRYPT }, /* test vector 1 */ 120 }; 121 122 static int run_test_vectors(void) 123 { 124 unsigned int n; 125 int errs = 0; 126 127 for(n=0 ; n < sizeof(ige_test_vectors)/sizeof(ige_test_vectors[0]) ; ++n) 128 { 129 const struct ige_test * const v = &ige_test_vectors[n]; 130 AES_KEY key; 131 unsigned char buf[MAX_VECTOR_SIZE]; 132 unsigned char iv[AES_BLOCK_SIZE*2]; 133 134 assert(v->length <= MAX_VECTOR_SIZE); 135 136 if(v->encrypt == AES_ENCRYPT) 137 AES_set_encrypt_key(v->key, 8*sizeof v->key, &key); 138 else 139 AES_set_decrypt_key(v->key, 8*sizeof v->key, &key); 140 memcpy(iv, v->iv, sizeof iv); 141 AES_ige_encrypt(v->in, buf, v->length, &key, iv, v->encrypt); 142 143 if(memcmp(v->out, buf, v->length)) 144 { 145 printf("IGE test vector %d failed\n", n); 146 hexdump(stdout, "key", v->key, sizeof v->key); 147 hexdump(stdout, "iv", v->iv, sizeof v->iv); 148 hexdump(stdout, "in", v->in, v->length); 149 hexdump(stdout, "expected", v->out, v->length); 150 hexdump(stdout, "got", buf, v->length); 151 152 ++errs; 153 } 154 155 /* try with in == out */ 156 memcpy(iv, v->iv, sizeof iv); 157 memcpy(buf, v->in, v->length); 158 AES_ige_encrypt(buf, buf, v->length, &key, iv, v->encrypt); 159 160 if(memcmp(v->out, buf, v->length)) 161 { 162 printf("IGE test vector %d failed (with in == out)\n", n); 163 hexdump(stdout, "key", v->key, sizeof v->key); 164 hexdump(stdout, "iv", v->iv, sizeof v->iv); 165 hexdump(stdout, "in", v->in, v->length); 166 hexdump(stdout, "expected", v->out, v->length); 167 hexdump(stdout, "got", buf, v->length); 168 169 ++errs; 170 } 171 } 172 173 return errs; 174 } 175 176 int main(int argc, char **argv) 177 { 178 unsigned char rkey[16]; 179 unsigned char rkey2[16]; 180 AES_KEY key; 181 AES_KEY key2; 182 unsigned char plaintext[BIG_TEST_SIZE]; 183 unsigned char ciphertext[BIG_TEST_SIZE]; 184 unsigned char checktext[BIG_TEST_SIZE]; 185 unsigned char iv[AES_BLOCK_SIZE*4]; 186 unsigned char saved_iv[AES_BLOCK_SIZE*4]; 187 int err = 0; 188 unsigned int n; 189 unsigned matches; 190 191 assert(BIG_TEST_SIZE >= TEST_SIZE); 192 193 arc4random_buf(rkey, sizeof(rkey)); 194 arc4random_buf(plaintext, sizeof(plaintext)); 195 arc4random_buf(iv, sizeof(iv)); 196 memcpy(saved_iv, iv, sizeof(saved_iv)); 197 198 /* Forward IGE only... */ 199 200 /* Straight encrypt/decrypt */ 201 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key); 202 AES_ige_encrypt(plaintext, ciphertext, TEST_SIZE, &key, iv, 203 AES_ENCRYPT); 204 205 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key); 206 memcpy(iv, saved_iv, sizeof iv); 207 AES_ige_encrypt(ciphertext, checktext, TEST_SIZE, &key, iv, 208 AES_DECRYPT); 209 210 if(memcmp(checktext, plaintext, TEST_SIZE)) 211 { 212 printf("Encrypt+decrypt doesn't match\n"); 213 hexdump(stdout, "Plaintext", plaintext, TEST_SIZE); 214 hexdump(stdout, "Checktext", checktext, TEST_SIZE); 215 ++err; 216 } 217 218 /* Now check encrypt chaining works */ 219 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key); 220 memcpy(iv, saved_iv, sizeof iv); 221 AES_ige_encrypt(plaintext, ciphertext, TEST_SIZE/2, &key, iv, 222 AES_ENCRYPT); 223 AES_ige_encrypt(plaintext+TEST_SIZE/2, 224 ciphertext+TEST_SIZE/2, TEST_SIZE/2, 225 &key, iv, AES_ENCRYPT); 226 227 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key); 228 memcpy(iv, saved_iv, sizeof iv); 229 AES_ige_encrypt(ciphertext, checktext, TEST_SIZE, &key, iv, 230 AES_DECRYPT); 231 232 if(memcmp(checktext, plaintext, TEST_SIZE)) 233 { 234 printf("Chained encrypt+decrypt doesn't match\n"); 235 hexdump(stdout, "Plaintext", plaintext, TEST_SIZE); 236 hexdump(stdout, "Checktext", checktext, TEST_SIZE); 237 ++err; 238 } 239 240 /* And check decrypt chaining */ 241 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key); 242 memcpy(iv, saved_iv, sizeof iv); 243 AES_ige_encrypt(plaintext, ciphertext, TEST_SIZE/2, &key, iv, 244 AES_ENCRYPT); 245 AES_ige_encrypt(plaintext+TEST_SIZE/2, 246 ciphertext+TEST_SIZE/2, TEST_SIZE/2, 247 &key, iv, AES_ENCRYPT); 248 249 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key); 250 memcpy(iv, saved_iv, sizeof iv); 251 AES_ige_encrypt(ciphertext, checktext, TEST_SIZE/2, &key, iv, 252 AES_DECRYPT); 253 AES_ige_encrypt(ciphertext+TEST_SIZE/2, 254 checktext+TEST_SIZE/2, TEST_SIZE/2, &key, iv, 255 AES_DECRYPT); 256 257 if(memcmp(checktext, plaintext, TEST_SIZE)) 258 { 259 printf("Chained encrypt+chained decrypt doesn't match\n"); 260 hexdump(stdout, "Plaintext", plaintext, TEST_SIZE); 261 hexdump(stdout, "Checktext", checktext, TEST_SIZE); 262 ++err; 263 } 264 265 /* make sure garble extends forwards only */ 266 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key); 267 memcpy(iv, saved_iv, sizeof iv); 268 AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv, 269 AES_ENCRYPT); 270 271 /* corrupt halfway through */ 272 ++ciphertext[sizeof ciphertext/2]; 273 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key); 274 memcpy(iv, saved_iv, sizeof iv); 275 AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv, 276 AES_DECRYPT); 277 278 matches=0; 279 for(n=0 ; n < sizeof checktext ; ++n) 280 if(checktext[n] == plaintext[n]) 281 ++matches; 282 283 if(matches > sizeof checktext/2+sizeof checktext/100) 284 { 285 printf("More than 51%% matches after garbling\n"); 286 ++err; 287 } 288 289 if(matches < sizeof checktext/2) 290 { 291 printf("Garble extends backwards!\n"); 292 ++err; 293 } 294 295 /* make sure garble extends both ways */ 296 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key); 297 AES_set_encrypt_key(rkey2, 8*sizeof rkey2, &key2); 298 AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv, 299 AES_ENCRYPT); 300 301 /* corrupt halfway through */ 302 ++ciphertext[sizeof ciphertext/2]; 303 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key); 304 AES_set_decrypt_key(rkey2, 8*sizeof rkey2, &key2); 305 AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv, 306 AES_DECRYPT); 307 308 matches=0; 309 for(n=0 ; n < sizeof checktext ; ++n) 310 if(checktext[n] == plaintext[n]) 311 ++matches; 312 313 if(matches > sizeof checktext/100) 314 { 315 printf("More than 1%% matches after bidirectional garbling\n"); 316 ++err; 317 } 318 319 /* make sure garble extends both ways (2) */ 320 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key); 321 AES_set_encrypt_key(rkey2, 8*sizeof rkey2, &key2); 322 AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv, 323 AES_ENCRYPT); 324 325 /* corrupt right at the end */ 326 ++ciphertext[sizeof ciphertext-1]; 327 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key); 328 AES_set_decrypt_key(rkey2, 8*sizeof rkey2, &key2); 329 AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv, 330 AES_DECRYPT); 331 332 matches=0; 333 for(n=0 ; n < sizeof checktext ; ++n) 334 if(checktext[n] == plaintext[n]) 335 ++matches; 336 337 if(matches > sizeof checktext/100) 338 { 339 printf("More than 1%% matches after bidirectional garbling (2)\n"); 340 ++err; 341 } 342 343 /* make sure garble extends both ways (3) */ 344 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key); 345 AES_set_encrypt_key(rkey2, 8*sizeof rkey2, &key2); 346 AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv, 347 AES_ENCRYPT); 348 349 /* corrupt right at the start */ 350 ++ciphertext[0]; 351 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key); 352 AES_set_decrypt_key(rkey2, 8*sizeof rkey2, &key2); 353 AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv, 354 AES_DECRYPT); 355 356 matches=0; 357 for(n=0 ; n < sizeof checktext ; ++n) 358 if(checktext[n] == plaintext[n]) 359 ++matches; 360 361 if(matches > sizeof checktext/100) 362 { 363 printf("More than 1%% matches after bidirectional garbling (3)\n"); 364 ++err; 365 } 366 367 err += run_test_vectors(); 368 369 return err; 370 } 371