1 /* 2 * Copyright 2015-2022 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 /* 11 * This is the OSSLTEST engine. It provides deliberately crippled digest 12 * implementations for test purposes. It is highly insecure and must NOT be 13 * used for any purpose except testing 14 */ 15 16 /* We need to use some engine deprecated APIs */ 17 #define OPENSSL_SUPPRESS_DEPRECATED 18 19 /* 20 * SHA low level APIs are deprecated for public use, but still ok for 21 * internal use. Note, that due to symbols not being exported, only the 22 * #defines and type definitions can be accessed, function calls are not 23 * available. The digest lengths, block sizes and sizeof(CTX) are used herein 24 * for several different digests. 25 */ 26 #include "internal/deprecated.h" 27 28 #include <stdio.h> 29 #include <string.h> 30 31 #include <openssl/engine.h> 32 #include <openssl/sha.h> 33 #include <openssl/md5.h> 34 #include <openssl/rsa.h> 35 #include <openssl/evp.h> 36 #include <openssl/modes.h> 37 #include <openssl/aes.h> 38 #include <openssl/rand.h> 39 #include <openssl/crypto.h> 40 #include <openssl/pem.h> 41 #include <crypto/evp.h> 42 43 #include "e_ossltest_err.c" 44 45 /* Engine Id and Name */ 46 static const char *engine_ossltest_id = "ossltest"; 47 static const char *engine_ossltest_name = "OpenSSL Test engine support"; 48 49 50 /* Engine Lifetime functions */ 51 static int ossltest_destroy(ENGINE *e); 52 static int ossltest_init(ENGINE *e); 53 static int ossltest_finish(ENGINE *e); 54 void ENGINE_load_ossltest(void); 55 56 57 /* Set up digests */ 58 static int ossltest_digests(ENGINE *e, const EVP_MD **digest, 59 const int **nids, int nid); 60 static const RAND_METHOD *ossltest_rand_method(void); 61 62 /* MD5 */ 63 static int digest_md5_init(EVP_MD_CTX *ctx); 64 static int digest_md5_update(EVP_MD_CTX *ctx, const void *data, 65 size_t count); 66 static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md); 67 68 static EVP_MD *_hidden_md5_md = NULL; 69 static const EVP_MD *digest_md5(void) 70 { 71 if (_hidden_md5_md == NULL) { 72 EVP_MD *md; 73 74 if ((md = EVP_MD_meth_new(NID_md5, NID_md5WithRSAEncryption)) == NULL 75 || !EVP_MD_meth_set_result_size(md, MD5_DIGEST_LENGTH) 76 || !EVP_MD_meth_set_input_blocksize(md, MD5_CBLOCK) 77 || !EVP_MD_meth_set_app_datasize(md, 78 sizeof(EVP_MD *) + sizeof(MD5_CTX)) 79 || !EVP_MD_meth_set_flags(md, 0) 80 || !EVP_MD_meth_set_init(md, digest_md5_init) 81 || !EVP_MD_meth_set_update(md, digest_md5_update) 82 || !EVP_MD_meth_set_final(md, digest_md5_final)) { 83 EVP_MD_meth_free(md); 84 md = NULL; 85 } 86 _hidden_md5_md = md; 87 } 88 return _hidden_md5_md; 89 } 90 91 /* SHA1 */ 92 static int digest_sha1_init(EVP_MD_CTX *ctx); 93 static int digest_sha1_update(EVP_MD_CTX *ctx, const void *data, 94 size_t count); 95 static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md); 96 97 static EVP_MD *_hidden_sha1_md = NULL; 98 static const EVP_MD *digest_sha1(void) 99 { 100 if (_hidden_sha1_md == NULL) { 101 EVP_MD *md; 102 103 if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL 104 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH) 105 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK) 106 || !EVP_MD_meth_set_app_datasize(md, 107 sizeof(EVP_MD *) + sizeof(SHA_CTX)) 108 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT) 109 || !EVP_MD_meth_set_init(md, digest_sha1_init) 110 || !EVP_MD_meth_set_update(md, digest_sha1_update) 111 || !EVP_MD_meth_set_final(md, digest_sha1_final)) { 112 EVP_MD_meth_free(md); 113 md = NULL; 114 } 115 _hidden_sha1_md = md; 116 } 117 return _hidden_sha1_md; 118 } 119 120 /* SHA256 */ 121 static int digest_sha256_init(EVP_MD_CTX *ctx); 122 static int digest_sha256_update(EVP_MD_CTX *ctx, const void *data, 123 size_t count); 124 static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md); 125 126 static EVP_MD *_hidden_sha256_md = NULL; 127 static const EVP_MD *digest_sha256(void) 128 { 129 if (_hidden_sha256_md == NULL) { 130 EVP_MD *md; 131 132 if ((md = EVP_MD_meth_new(NID_sha256, NID_sha256WithRSAEncryption)) == NULL 133 || !EVP_MD_meth_set_result_size(md, SHA256_DIGEST_LENGTH) 134 || !EVP_MD_meth_set_input_blocksize(md, SHA256_CBLOCK) 135 || !EVP_MD_meth_set_app_datasize(md, 136 sizeof(EVP_MD *) + sizeof(SHA256_CTX)) 137 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT) 138 || !EVP_MD_meth_set_init(md, digest_sha256_init) 139 || !EVP_MD_meth_set_update(md, digest_sha256_update) 140 || !EVP_MD_meth_set_final(md, digest_sha256_final)) { 141 EVP_MD_meth_free(md); 142 md = NULL; 143 } 144 _hidden_sha256_md = md; 145 } 146 return _hidden_sha256_md; 147 } 148 149 /* SHA384/SHA512 */ 150 static int digest_sha384_init(EVP_MD_CTX *ctx); 151 static int digest_sha384_update(EVP_MD_CTX *ctx, const void *data, 152 size_t count); 153 static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md); 154 155 static int digest_sha512_init(EVP_MD_CTX *ctx); 156 static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data, 157 size_t count); 158 static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md); 159 160 static EVP_MD *_hidden_sha384_md = NULL; 161 static const EVP_MD *digest_sha384(void) 162 { 163 if (_hidden_sha384_md == NULL) { 164 EVP_MD *md; 165 166 if ((md = EVP_MD_meth_new(NID_sha384, NID_sha384WithRSAEncryption)) == NULL 167 || !EVP_MD_meth_set_result_size(md, SHA384_DIGEST_LENGTH) 168 || !EVP_MD_meth_set_input_blocksize(md, SHA512_CBLOCK) 169 || !EVP_MD_meth_set_app_datasize(md, 170 sizeof(EVP_MD *) + sizeof(SHA512_CTX)) 171 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT) 172 || !EVP_MD_meth_set_init(md, digest_sha384_init) 173 || !EVP_MD_meth_set_update(md, digest_sha384_update) 174 || !EVP_MD_meth_set_final(md, digest_sha384_final)) { 175 EVP_MD_meth_free(md); 176 md = NULL; 177 } 178 _hidden_sha384_md = md; 179 } 180 return _hidden_sha384_md; 181 } 182 static EVP_MD *_hidden_sha512_md = NULL; 183 static const EVP_MD *digest_sha512(void) 184 { 185 if (_hidden_sha512_md == NULL) { 186 EVP_MD *md; 187 188 if ((md = EVP_MD_meth_new(NID_sha512, NID_sha512WithRSAEncryption)) == NULL 189 || !EVP_MD_meth_set_result_size(md, SHA512_DIGEST_LENGTH) 190 || !EVP_MD_meth_set_input_blocksize(md, SHA512_CBLOCK) 191 || !EVP_MD_meth_set_app_datasize(md, 192 sizeof(EVP_MD *) + sizeof(SHA512_CTX)) 193 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT) 194 || !EVP_MD_meth_set_init(md, digest_sha512_init) 195 || !EVP_MD_meth_set_update(md, digest_sha512_update) 196 || !EVP_MD_meth_set_final(md, digest_sha512_final)) { 197 EVP_MD_meth_free(md); 198 md = NULL; 199 } 200 _hidden_sha512_md = md; 201 } 202 return _hidden_sha512_md; 203 } 204 static void destroy_digests(void) 205 { 206 EVP_MD_meth_free(_hidden_md5_md); 207 _hidden_md5_md = NULL; 208 EVP_MD_meth_free(_hidden_sha1_md); 209 _hidden_sha1_md = NULL; 210 EVP_MD_meth_free(_hidden_sha256_md); 211 _hidden_sha256_md = NULL; 212 EVP_MD_meth_free(_hidden_sha384_md); 213 _hidden_sha384_md = NULL; 214 EVP_MD_meth_free(_hidden_sha512_md); 215 _hidden_sha512_md = NULL; 216 } 217 static int ossltest_digest_nids(const int **nids) 218 { 219 static int digest_nids[6] = { 0, 0, 0, 0, 0, 0 }; 220 static int pos = 0; 221 static int init = 0; 222 223 if (!init) { 224 const EVP_MD *md; 225 if ((md = digest_md5()) != NULL) 226 digest_nids[pos++] = EVP_MD_get_type(md); 227 if ((md = digest_sha1()) != NULL) 228 digest_nids[pos++] = EVP_MD_get_type(md); 229 if ((md = digest_sha256()) != NULL) 230 digest_nids[pos++] = EVP_MD_get_type(md); 231 if ((md = digest_sha384()) != NULL) 232 digest_nids[pos++] = EVP_MD_get_type(md); 233 if ((md = digest_sha512()) != NULL) 234 digest_nids[pos++] = EVP_MD_get_type(md); 235 digest_nids[pos] = 0; 236 init = 1; 237 } 238 *nids = digest_nids; 239 return pos; 240 } 241 242 /* Setup ciphers */ 243 static int ossltest_ciphers(ENGINE *, const EVP_CIPHER **, 244 const int **, int); 245 246 static int ossltest_cipher_nids[] = { 247 NID_aes_128_cbc, NID_aes_128_gcm, 248 NID_aes_128_cbc_hmac_sha1, 0 249 }; 250 251 /* AES128 */ 252 253 static int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx, 254 const unsigned char *key, 255 const unsigned char *iv, int enc); 256 static int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 257 const unsigned char *in, size_t inl); 258 static int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx, 259 const unsigned char *key, 260 const unsigned char *iv, int enc); 261 static int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 262 const unsigned char *in, size_t inl); 263 static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, 264 void *ptr); 265 static int ossltest_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx, 266 const unsigned char *key, 267 const unsigned char *iv, 268 int enc); 269 static int ossltest_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, 270 unsigned char *out, 271 const unsigned char *in, 272 size_t inl); 273 static int ossltest_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, 274 int arg, void *ptr); 275 276 typedef struct { 277 size_t payload_length; /* AAD length in decrypt case */ 278 unsigned int tls_ver; 279 } EVP_AES_HMAC_SHA1; 280 281 static EVP_CIPHER *_hidden_aes_128_cbc = NULL; 282 static const EVP_CIPHER *ossltest_aes_128_cbc(void) 283 { 284 if (_hidden_aes_128_cbc == NULL 285 && ((_hidden_aes_128_cbc = EVP_CIPHER_meth_new(NID_aes_128_cbc, 286 16 /* block size */, 287 16 /* key len */)) == NULL 288 || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc,16) 289 || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc, 290 EVP_CIPH_FLAG_DEFAULT_ASN1 291 | EVP_CIPH_CBC_MODE) 292 || !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc, 293 ossltest_aes128_init_key) 294 || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc, 295 ossltest_aes128_cbc_cipher) 296 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc, 297 EVP_CIPHER_impl_ctx_size(EVP_aes_128_cbc())))) { 298 EVP_CIPHER_meth_free(_hidden_aes_128_cbc); 299 _hidden_aes_128_cbc = NULL; 300 } 301 return _hidden_aes_128_cbc; 302 } 303 304 static EVP_CIPHER *_hidden_aes_128_gcm = NULL; 305 306 #define AES_GCM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ 307 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ 308 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ 309 | EVP_CIPH_CUSTOM_COPY |EVP_CIPH_FLAG_AEAD_CIPHER \ 310 | EVP_CIPH_GCM_MODE) 311 312 static const EVP_CIPHER *ossltest_aes_128_gcm(void) 313 { 314 if (_hidden_aes_128_gcm == NULL 315 && ((_hidden_aes_128_gcm = EVP_CIPHER_meth_new(NID_aes_128_gcm, 316 1 /* block size */, 317 16 /* key len */)) == NULL 318 || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_gcm,12) 319 || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_gcm, AES_GCM_FLAGS) 320 || !EVP_CIPHER_meth_set_init(_hidden_aes_128_gcm, 321 ossltest_aes128_gcm_init_key) 322 || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_gcm, 323 ossltest_aes128_gcm_cipher) 324 || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_gcm, 325 ossltest_aes128_gcm_ctrl) 326 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_gcm, 327 EVP_CIPHER_impl_ctx_size(EVP_aes_128_gcm())))) { 328 EVP_CIPHER_meth_free(_hidden_aes_128_gcm); 329 _hidden_aes_128_gcm = NULL; 330 } 331 return _hidden_aes_128_gcm; 332 } 333 334 static EVP_CIPHER *_hidden_aes_128_cbc_hmac_sha1 = NULL; 335 336 static const EVP_CIPHER *ossltest_aes_128_cbc_hmac_sha1(void) 337 { 338 if (_hidden_aes_128_cbc_hmac_sha1 == NULL 339 && ((_hidden_aes_128_cbc_hmac_sha1 340 = EVP_CIPHER_meth_new(NID_aes_128_cbc_hmac_sha1, 341 16 /* block size */, 342 16 /* key len */)) == NULL 343 || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc_hmac_sha1,16) 344 || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc_hmac_sha1, 345 EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 | 346 EVP_CIPH_FLAG_AEAD_CIPHER) 347 || !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc_hmac_sha1, 348 ossltest_aes128_cbc_hmac_sha1_init_key) 349 || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc_hmac_sha1, 350 ossltest_aes128_cbc_hmac_sha1_cipher) 351 || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_cbc_hmac_sha1, 352 ossltest_aes128_cbc_hmac_sha1_ctrl) 353 || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_aes_128_cbc_hmac_sha1, 354 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv) 355 || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_aes_128_cbc_hmac_sha1, 356 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv) 357 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc_hmac_sha1, 358 sizeof(EVP_AES_HMAC_SHA1)))) { 359 EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1); 360 _hidden_aes_128_cbc_hmac_sha1 = NULL; 361 } 362 return _hidden_aes_128_cbc_hmac_sha1; 363 } 364 365 static void destroy_ciphers(void) 366 { 367 EVP_CIPHER_meth_free(_hidden_aes_128_cbc); 368 EVP_CIPHER_meth_free(_hidden_aes_128_gcm); 369 EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1); 370 _hidden_aes_128_cbc = NULL; 371 _hidden_aes_128_gcm = NULL; 372 _hidden_aes_128_cbc_hmac_sha1 = NULL; 373 } 374 375 /* Key loading */ 376 static EVP_PKEY *load_key(ENGINE *eng, const char *key_id, int pub, 377 UI_METHOD *ui_method, void *ui_data) 378 { 379 BIO *in; 380 EVP_PKEY *key; 381 382 if (OPENSSL_strncasecmp(key_id, "ot:", 3) != 0) 383 return NULL; 384 key_id += 3; 385 386 fprintf(stderr, "[ossltest]Loading %s key %s\n", 387 pub ? "Public" : "Private", key_id); 388 in = BIO_new_file(key_id, "r"); 389 if (!in) 390 return NULL; 391 if (pub) 392 key = PEM_read_bio_PUBKEY(in, NULL, 0, NULL); 393 else 394 key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL); 395 BIO_free(in); 396 return key; 397 } 398 399 static EVP_PKEY *ossltest_load_privkey(ENGINE *eng, const char *key_id, 400 UI_METHOD *ui_method, void *ui_data) 401 { 402 return load_key(eng, key_id, 0, ui_method, ui_data); 403 } 404 405 static EVP_PKEY *ossltest_load_pubkey(ENGINE *eng, const char *key_id, 406 UI_METHOD *ui_method, void *ui_data) 407 { 408 return load_key(eng, key_id, 1, ui_method, ui_data); 409 } 410 411 412 static int bind_ossltest(ENGINE *e) 413 { 414 /* Ensure the ossltest error handling is set up */ 415 ERR_load_OSSLTEST_strings(); 416 417 if (!ENGINE_set_id(e, engine_ossltest_id) 418 || !ENGINE_set_name(e, engine_ossltest_name) 419 || !ENGINE_set_digests(e, ossltest_digests) 420 || !ENGINE_set_ciphers(e, ossltest_ciphers) 421 || !ENGINE_set_RAND(e, ossltest_rand_method()) 422 || !ENGINE_set_destroy_function(e, ossltest_destroy) 423 || !ENGINE_set_load_privkey_function(e, ossltest_load_privkey) 424 || !ENGINE_set_load_pubkey_function(e, ossltest_load_pubkey) 425 || !ENGINE_set_init_function(e, ossltest_init) 426 || !ENGINE_set_finish_function(e, ossltest_finish)) { 427 OSSLTESTerr(OSSLTEST_F_BIND_OSSLTEST, OSSLTEST_R_INIT_FAILED); 428 return 0; 429 } 430 431 return 1; 432 } 433 434 #ifndef OPENSSL_NO_DYNAMIC_ENGINE 435 static int bind_helper(ENGINE *e, const char *id) 436 { 437 if (id && (strcmp(id, engine_ossltest_id) != 0)) 438 return 0; 439 if (!bind_ossltest(e)) 440 return 0; 441 return 1; 442 } 443 444 IMPLEMENT_DYNAMIC_CHECK_FN() 445 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper) 446 #endif 447 448 static ENGINE *engine_ossltest(void) 449 { 450 ENGINE *ret = ENGINE_new(); 451 if (ret == NULL) 452 return NULL; 453 if (!bind_ossltest(ret)) { 454 ENGINE_free(ret); 455 return NULL; 456 } 457 return ret; 458 } 459 460 void ENGINE_load_ossltest(void) 461 { 462 /* Copied from eng_[openssl|dyn].c */ 463 ENGINE *toadd = engine_ossltest(); 464 if (!toadd) 465 return; 466 ENGINE_add(toadd); 467 ENGINE_free(toadd); 468 ERR_clear_error(); 469 } 470 471 472 static int ossltest_init(ENGINE *e) 473 { 474 return 1; 475 } 476 477 478 static int ossltest_finish(ENGINE *e) 479 { 480 return 1; 481 } 482 483 484 static int ossltest_destroy(ENGINE *e) 485 { 486 destroy_digests(); 487 destroy_ciphers(); 488 ERR_unload_OSSLTEST_strings(); 489 return 1; 490 } 491 492 static int ossltest_digests(ENGINE *e, const EVP_MD **digest, 493 const int **nids, int nid) 494 { 495 int ok = 1; 496 if (!digest) { 497 /* We are returning a list of supported nids */ 498 return ossltest_digest_nids(nids); 499 } 500 /* We are being asked for a specific digest */ 501 switch (nid) { 502 case NID_md5: 503 *digest = digest_md5(); 504 break; 505 case NID_sha1: 506 *digest = digest_sha1(); 507 break; 508 case NID_sha256: 509 *digest = digest_sha256(); 510 break; 511 case NID_sha384: 512 *digest = digest_sha384(); 513 break; 514 case NID_sha512: 515 *digest = digest_sha512(); 516 break; 517 default: 518 ok = 0; 519 *digest = NULL; 520 break; 521 } 522 return ok; 523 } 524 525 static int ossltest_ciphers(ENGINE *e, const EVP_CIPHER **cipher, 526 const int **nids, int nid) 527 { 528 int ok = 1; 529 if (!cipher) { 530 /* We are returning a list of supported nids */ 531 *nids = ossltest_cipher_nids; 532 return (sizeof(ossltest_cipher_nids) - 1) 533 / sizeof(ossltest_cipher_nids[0]); 534 } 535 /* We are being asked for a specific cipher */ 536 switch (nid) { 537 case NID_aes_128_cbc: 538 *cipher = ossltest_aes_128_cbc(); 539 break; 540 case NID_aes_128_gcm: 541 *cipher = ossltest_aes_128_gcm(); 542 break; 543 case NID_aes_128_cbc_hmac_sha1: 544 *cipher = ossltest_aes_128_cbc_hmac_sha1(); 545 break; 546 default: 547 ok = 0; 548 *cipher = NULL; 549 break; 550 } 551 return ok; 552 } 553 554 static void fill_known_data(unsigned char *md, unsigned int len) 555 { 556 unsigned int i; 557 558 for (i=0; i<len; i++) { 559 md[i] = (unsigned char)(i & 0xff); 560 } 561 } 562 563 /* 564 * MD5 implementation. We go through the motions of doing MD5 by deferring to 565 * the standard implementation. Then we overwrite the result with a will defined 566 * value, so that all "MD5" digests using the test engine always end up with 567 * the same value. 568 */ 569 static int digest_md5_init(EVP_MD_CTX *ctx) 570 { 571 return EVP_MD_meth_get_init(EVP_md5())(ctx); 572 } 573 574 static int digest_md5_update(EVP_MD_CTX *ctx, const void *data, 575 size_t count) 576 { 577 return EVP_MD_meth_get_update(EVP_md5())(ctx, data, count); 578 } 579 580 static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md) 581 { 582 int ret = EVP_MD_meth_get_final(EVP_md5())(ctx, md); 583 584 if (ret > 0) { 585 fill_known_data(md, MD5_DIGEST_LENGTH); 586 } 587 return ret; 588 } 589 590 /* 591 * SHA1 implementation. 592 */ 593 static int digest_sha1_init(EVP_MD_CTX *ctx) 594 { 595 return EVP_MD_meth_get_init(EVP_sha1())(ctx); 596 } 597 598 static int digest_sha1_update(EVP_MD_CTX *ctx, const void *data, 599 size_t count) 600 { 601 return EVP_MD_meth_get_update(EVP_sha1())(ctx, data, count); 602 } 603 604 static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md) 605 { 606 int ret = EVP_MD_meth_get_final(EVP_sha1())(ctx, md); 607 608 if (ret > 0) { 609 fill_known_data(md, SHA_DIGEST_LENGTH); 610 } 611 return ret; 612 } 613 614 /* 615 * SHA256 implementation. 616 */ 617 static int digest_sha256_init(EVP_MD_CTX *ctx) 618 { 619 return EVP_MD_meth_get_init(EVP_sha256())(ctx); 620 } 621 622 static int digest_sha256_update(EVP_MD_CTX *ctx, const void *data, 623 size_t count) 624 { 625 return EVP_MD_meth_get_update(EVP_sha256())(ctx, data, count); 626 } 627 628 static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md) 629 { 630 int ret = EVP_MD_meth_get_final(EVP_sha256())(ctx, md); 631 632 if (ret > 0) { 633 fill_known_data(md, SHA256_DIGEST_LENGTH); 634 } 635 return ret; 636 } 637 638 /* 639 * SHA384 implementation. 640 */ 641 static int digest_sha384_init(EVP_MD_CTX *ctx) 642 { 643 return EVP_MD_meth_get_init(EVP_sha384())(ctx); 644 } 645 646 static int digest_sha384_update(EVP_MD_CTX *ctx, const void *data, 647 size_t count) 648 { 649 return EVP_MD_meth_get_update(EVP_sha384())(ctx, data, count); 650 } 651 652 static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md) 653 { 654 int ret = EVP_MD_meth_get_final(EVP_sha384())(ctx, md); 655 656 if (ret > 0) { 657 fill_known_data(md, SHA384_DIGEST_LENGTH); 658 } 659 return ret; 660 } 661 662 /* 663 * SHA512 implementation. 664 */ 665 static int digest_sha512_init(EVP_MD_CTX *ctx) 666 { 667 return EVP_MD_meth_get_init(EVP_sha512())(ctx); 668 } 669 670 static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data, 671 size_t count) 672 { 673 return EVP_MD_meth_get_update(EVP_sha512())(ctx, data, count); 674 } 675 676 static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md) 677 { 678 int ret = EVP_MD_meth_get_final(EVP_sha512())(ctx, md); 679 680 if (ret > 0) { 681 fill_known_data(md, SHA512_DIGEST_LENGTH); 682 } 683 return ret; 684 } 685 686 /* 687 * AES128 Implementation 688 */ 689 690 static int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx, 691 const unsigned char *key, 692 const unsigned char *iv, int enc) 693 { 694 return EVP_CIPHER_meth_get_init(EVP_aes_128_cbc()) (ctx, key, iv, enc); 695 } 696 697 static int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 698 const unsigned char *in, size_t inl) 699 { 700 unsigned char *tmpbuf; 701 int ret; 702 703 tmpbuf = OPENSSL_malloc(inl); 704 705 /* OPENSSL_malloc will return NULL if inl == 0 */ 706 if (tmpbuf == NULL && inl > 0) 707 return -1; 708 709 /* Remember what we were asked to encrypt */ 710 if (tmpbuf != NULL) 711 memcpy(tmpbuf, in, inl); 712 713 /* Go through the motions of encrypting it */ 714 ret = EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_cbc())(ctx, out, in, inl); 715 716 /* Throw it all away and just use the plaintext as the output */ 717 if (tmpbuf != NULL) 718 memcpy(out, tmpbuf, inl); 719 OPENSSL_free(tmpbuf); 720 721 return ret; 722 } 723 724 static int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx, 725 const unsigned char *key, 726 const unsigned char *iv, int enc) 727 { 728 return EVP_CIPHER_meth_get_init(EVP_aes_128_gcm()) (ctx, key, iv, enc); 729 } 730 731 static int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 732 const unsigned char *in, size_t inl) 733 { 734 unsigned char *tmpbuf = OPENSSL_malloc(inl); 735 736 /* OPENSSL_malloc will return NULL if inl == 0 */ 737 if (tmpbuf == NULL && inl > 0) 738 return -1; 739 740 /* Remember what we were asked to encrypt */ 741 if (tmpbuf != NULL) 742 memcpy(tmpbuf, in, inl); 743 744 /* Go through the motions of encrypting it */ 745 EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_gcm())(ctx, out, in, inl); 746 747 /* Throw it all away and just use the plaintext as the output */ 748 if (tmpbuf != NULL && out != NULL) 749 memcpy(out, tmpbuf, inl); 750 OPENSSL_free(tmpbuf); 751 752 return inl; 753 } 754 755 static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, 756 void *ptr) 757 { 758 /* Pass the ctrl down */ 759 int ret = EVP_CIPHER_meth_get_ctrl(EVP_aes_128_gcm())(ctx, type, arg, ptr); 760 761 if (ret <= 0) 762 return ret; 763 764 switch(type) { 765 case EVP_CTRL_AEAD_GET_TAG: 766 /* Always give the same tag */ 767 memset(ptr, 0, EVP_GCM_TLS_TAG_LEN); 768 break; 769 770 default: 771 break; 772 } 773 774 return 1; 775 } 776 777 #define NO_PAYLOAD_LENGTH ((size_t)-1) 778 # define data(ctx) ((EVP_AES_HMAC_SHA1 *)EVP_CIPHER_CTX_get_cipher_data(ctx)) 779 780 static int ossltest_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx, 781 const unsigned char *inkey, 782 const unsigned char *iv, 783 int enc) 784 { 785 EVP_AES_HMAC_SHA1 *key = data(ctx); 786 key->payload_length = NO_PAYLOAD_LENGTH; 787 return 1; 788 } 789 790 static int ossltest_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, 791 unsigned char *out, 792 const unsigned char *in, 793 size_t len) 794 { 795 EVP_AES_HMAC_SHA1 *key = data(ctx); 796 unsigned int l; 797 size_t plen = key->payload_length; 798 799 key->payload_length = NO_PAYLOAD_LENGTH; 800 801 if (len % AES_BLOCK_SIZE) 802 return 0; 803 804 if (EVP_CIPHER_CTX_is_encrypting(ctx)) { 805 if (plen == NO_PAYLOAD_LENGTH) 806 plen = len; 807 else if (len != 808 ((plen + SHA_DIGEST_LENGTH + 809 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)) 810 return 0; 811 812 memmove(out, in, plen); 813 814 if (plen != len) { /* "TLS" mode of operation */ 815 /* calculate HMAC and append it to payload */ 816 fill_known_data(out + plen, SHA_DIGEST_LENGTH); 817 818 /* pad the payload|hmac */ 819 plen += SHA_DIGEST_LENGTH; 820 for (l = len - plen - 1; plen < len; plen++) 821 out[plen] = l; 822 } 823 } else { 824 /* decrypt HMAC|padding at once */ 825 memmove(out, in, len); 826 827 if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */ 828 unsigned int maxpad, pad; 829 830 if (key->tls_ver >= TLS1_1_VERSION) { 831 if (len < (AES_BLOCK_SIZE + SHA_DIGEST_LENGTH + 1)) 832 return 0; 833 834 /* omit explicit iv */ 835 in += AES_BLOCK_SIZE; 836 out += AES_BLOCK_SIZE; 837 len -= AES_BLOCK_SIZE; 838 } else if (len < (SHA_DIGEST_LENGTH + 1)) 839 return 0; 840 841 /* figure out payload length */ 842 pad = out[len - 1]; 843 maxpad = len - (SHA_DIGEST_LENGTH + 1); 844 if (pad > maxpad) 845 return 0; 846 for (plen = len - pad - 1; plen < len; plen++) 847 if (out[plen] != pad) 848 return 0; 849 } 850 } 851 852 return 1; 853 } 854 855 static int ossltest_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, 856 int arg, void *ptr) 857 { 858 EVP_AES_HMAC_SHA1 *key = data(ctx); 859 860 switch (type) { 861 case EVP_CTRL_AEAD_SET_MAC_KEY: 862 return 1; 863 864 case EVP_CTRL_AEAD_TLS1_AAD: 865 { 866 unsigned char *p = ptr; 867 unsigned int len; 868 869 if (arg != EVP_AEAD_TLS1_AAD_LEN) 870 return -1; 871 872 len = p[arg - 2] << 8 | p[arg - 1]; 873 key->tls_ver = p[arg - 4] << 8 | p[arg - 3]; 874 875 if (EVP_CIPHER_CTX_is_encrypting(ctx)) { 876 key->payload_length = len; 877 if (key->tls_ver >= TLS1_1_VERSION) { 878 if (len < AES_BLOCK_SIZE) 879 return 0; 880 len -= AES_BLOCK_SIZE; 881 p[arg - 2] = len >> 8; 882 p[arg - 1] = len; 883 } 884 885 return (int)(((len + SHA_DIGEST_LENGTH + 886 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE) 887 - len); 888 } else { 889 key->payload_length = arg; 890 891 return SHA_DIGEST_LENGTH; 892 } 893 } 894 default: 895 return -1; 896 } 897 } 898 899 static int ossltest_rand_bytes(unsigned char *buf, int num) 900 { 901 unsigned char val = 1; 902 903 while (--num >= 0) 904 *buf++ = val++; 905 return 1; 906 } 907 908 static int ossltest_rand_status(void) 909 { 910 return 1; 911 } 912 913 static const RAND_METHOD *ossltest_rand_method(void) 914 { 915 916 static RAND_METHOD osslt_rand_meth = { 917 NULL, 918 ossltest_rand_bytes, 919 NULL, 920 NULL, 921 ossltest_rand_bytes, 922 ossltest_rand_status 923 }; 924 925 return &osslt_rand_meth; 926 } 927
Indexes created Sat Feb 28 05:31:39 UTC 2026