test/cmp_protect_test.c

   1 /*
   2  * Copyright 2007-2019 The OpenSSL Project Authors. All Rights Reserved.
   3  * Copyright Nokia 2007-2019
   4  * Copyright Siemens AG 2015-2019
   5  *
   6  * Licensed under the Apache License 2.0 (the "License").  You may not use
   7  * this file except in compliance with the License.  You can obtain a copy
   8  * in the file LICENSE in the source distribution or at
   9  * https://www.openssl.org/source/license.html
  10  */
  11
  12 #include "cmp_testlib.h"
  13
  14 static const char *ir_protected_f;
  15 static const char *ir_unprotected_f;
  16 static const char *ip_PBM_f;
  17
  18 typedef struct test_fixture {
  19     const char *test_case_name;
  20     OSSL_CMP_CTX *cmp_ctx;
  21     /* for protection tests */
  22     OSSL_CMP_MSG *msg;
  23     OSSL_CMP_PKISI *si; /* for error and response messages */
  24     ASN1_OCTET_STRING *secret;
  25     EVP_PKEY *privkey;
  26     EVP_PKEY *pubkey;
  27     unsigned char *mem;
  28     int memlen;
  29     X509 *cert;
  30     STACK_OF(X509) *certs;
  31     STACK_OF(X509) *chain;
  32     int callback_arg;
  33     int expected;
  34 } CMP_PROTECT_TEST_FIXTURE;
  35
  36 static void tear_down(CMP_PROTECT_TEST_FIXTURE *fixture)
  37 {
  38     OSSL_CMP_CTX_free(fixture->cmp_ctx);
  39     OSSL_CMP_MSG_free(fixture->msg);
  40     ASN1_OCTET_STRING_free(fixture->secret);
  41     OSSL_CMP_PKISI_free(fixture->si);
  42
  43     OPENSSL_free(fixture->mem);
  44     sk_X509_free(fixture->certs);
  45     sk_X509_free(fixture->chain);
  46
  47     OPENSSL_free(fixture);
  48 }
  49
  50 static CMP_PROTECT_TEST_FIXTURE *set_up(const char *const test_case_name)
  51 {
  52     CMP_PROTECT_TEST_FIXTURE *fixture;
  53
  54     if (!TEST_ptr(fixture = OPENSSL_zalloc(sizeof(*fixture))))
  55         return NULL;
  56     fixture->test_case_name = test_case_name;
  57     if (!TEST_ptr(fixture->cmp_ctx = OSSL_CMP_CTX_new())) {
  58         tear_down(fixture);
  59         return NULL;
  60     }
  61     return fixture;
  62 }
  63
  64 static EVP_PKEY *loadedprivkey = NULL;
  65 static EVP_PKEY *loadedpubkey = NULL;
  66 static EVP_PKEY *loadedkey = NULL;
  67 static X509 *cert = NULL;
  68 static unsigned char rand_data[OSSL_CMP_TRANSACTIONID_LENGTH];
  69 static OSSL_CMP_MSG *ir_unprotected, *ir_protected;
  70 static X509 *endentity1 = NULL, *endentity2 = NULL,
  71     *root = NULL, *intermediate = NULL;
  72
  73 static int execute_calc_protection_fails_test(CMP_PROTECT_TEST_FIXTURE *fixture)
  74 {
  75     ASN1_BIT_STRING *protection =
  76         ossl_cmp_calc_protection(fixture->msg, fixture->secret,
  77                                  fixture->privkey);
  78     int res = TEST_ptr_null(protection);
  79
  80     ASN1_BIT_STRING_free(protection);
  81     return res;
  82 }
  83
  84 static int execute_calc_protection_pbmac_test(CMP_PROTECT_TEST_FIXTURE *fixture)
  85 {
  86     ASN1_BIT_STRING *protection =
  87         ossl_cmp_calc_protection(fixture->msg, fixture->secret, NULL);
  88     int res = TEST_ptr(protection)
  89             && TEST_true(ASN1_STRING_cmp(protection,
  90                                          fixture->msg->protection) == 0);
  91
  92     ASN1_BIT_STRING_free(protection);
  93     return res;
  94 }
  95
  96 /*
  97  * This function works similarly to parts of CMP_verify_signature in cmp_vfy.c,
  98  * but without the need for a OSSL_CMP_CTX or a X509 certificate
  99  */
 100 static int verify_signature(OSSL_CMP_MSG *msg,
 101                             ASN1_BIT_STRING *protection,
 102                             EVP_PKEY *pkey, int digest_nid)
 103 {
 104     CMP_PROTECTEDPART prot_part;
 105     unsigned char *prot_part_der = NULL;
 106     int len;
 107     EVP_MD_CTX *ctx = NULL;
 108     const EVP_MD *digest = EVP_get_digestbynid(digest_nid);
 109     int res;
 110
 111     prot_part.header = OSSL_CMP_MSG_get0_header(msg);
 112     prot_part.body = msg->body;
 113     res =
 114         TEST_int_ge(len = i2d_CMP_PROTECTEDPART(&prot_part, &prot_part_der), 0)
 115         && TEST_ptr(ctx = EVP_MD_CTX_new())
 116         && TEST_true(EVP_DigestVerifyInit(ctx, NULL, digest, NULL, pkey))
 117         && TEST_int_eq(EVP_DigestVerify(ctx, protection->data,
 118                                         protection->length,
 119                                         prot_part_der, len), 1);
 120     /* cleanup */
 121     EVP_MD_CTX_free(ctx);
 122     OPENSSL_free(prot_part_der);
 123     return res;
 124 }
 125
 126 /* Calls OSSL_CMP_calc_protection and compares and verifies signature */
 127 static int execute_calc_protection_signature_test(CMP_PROTECT_TEST_FIXTURE *
 128                                                   fixture)
 129 {
 130     ASN1_BIT_STRING *protection =
 131         ossl_cmp_calc_protection(fixture->msg, NULL, fixture->privkey);
 132     int ret = (TEST_ptr(protection)
 133                    && TEST_true(ASN1_STRING_cmp(protection,
 134                                                 fixture->msg->protection) == 0)
 135                    && TEST_true(verify_signature(fixture->msg, protection,
 136                                                  fixture->pubkey,
 137                                                  fixture->cmp_ctx->digest)));
 138
 139     ASN1_BIT_STRING_free(protection);
 140     return ret;
 141 }
 142
 143 static int test_cmp_calc_protection_no_key_no_secret(void)
 144 {
 145     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 146     if (!TEST_ptr(fixture->msg = load_pkimsg(ir_unprotected_f))
 147             || !TEST_ptr(fixture->msg->header->protectionAlg =
 148                          X509_ALGOR_new() /* no specific alg needed here */)) {
 149         tear_down(fixture);
 150         fixture = NULL;
 151     }
 152
 153     EXECUTE_TEST(execute_calc_protection_fails_test, tear_down);
 154     return result;
 155 }
 156
 157 static int test_cmp_calc_protection_pkey(void)
 158 {
 159     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 160     fixture->pubkey = loadedpubkey;
 161     fixture->privkey = loadedprivkey;
 162     if (!TEST_ptr(fixture->msg = load_pkimsg(ir_protected_f))) {
 163         tear_down(fixture);
 164         fixture = NULL;
 165     }
 166     EXECUTE_TEST(execute_calc_protection_signature_test, tear_down);
 167     return result;
 168 }
 169
 170 static int test_cmp_calc_protection_pbmac(void)
 171 {
 172     unsigned char sec_insta[] = { 'i', 'n', 's', 't', 'a' };
 173
 174     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 175     if (!TEST_ptr(fixture->secret = ASN1_OCTET_STRING_new())
 176             || !TEST_true(ASN1_OCTET_STRING_set
 177                           (fixture->secret, sec_insta, sizeof(sec_insta)))
 178             || !TEST_ptr(fixture->msg = load_pkimsg(ip_PBM_f))) {
 179         tear_down(fixture);
 180         fixture = NULL;
 181     }
 182     EXECUTE_TEST(execute_calc_protection_pbmac_test, tear_down);
 183     return result;
 184 }
 185 static int execute_MSG_protect_test(CMP_PROTECT_TEST_FIXTURE *fixture)
 186 {
 187     return TEST_int_eq(fixture->expected,
 188                        ossl_cmp_msg_protect(fixture->cmp_ctx, fixture->msg));
 189 }
 190
 191 #define SET_OPT_UNPROTECTED_SEND(ctx, val) \
 192     OSSL_CMP_CTX_set_option((ctx), OSSL_CMP_OPT_UNPROTECTED_SEND, (val))
 193 static int test_MSG_protect_unprotected_request(void)
 194 {
 195     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 196
 197     fixture->expected = 1;
 198     if (!TEST_ptr(fixture->msg = OSSL_CMP_MSG_dup(ir_unprotected))
 199             || !TEST_true(SET_OPT_UNPROTECTED_SEND(fixture->cmp_ctx, 1))) {
 200         tear_down(fixture);
 201         fixture = NULL;
 202     }
 203     EXECUTE_TEST(execute_MSG_protect_test, tear_down);
 204     return result;
 205 }
 206
 207 static int test_MSG_protect_with_msg_sig_alg_protection_plus_rsa_key(void)
 208 {
 209     const size_t size = sizeof(rand_data) / 2;
 210
 211     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 212     fixture->expected = 1;
 213
 214     if (!TEST_ptr(fixture->msg =
 215                   OSSL_CMP_MSG_dup(ir_unprotected))
 216             || !TEST_true(SET_OPT_UNPROTECTED_SEND(fixture->cmp_ctx, 0))
 217             /*
 218              * Use half of the 16 bytes of random input
 219              * for each reference and secret value
 220              */
 221             || !TEST_true(OSSL_CMP_CTX_set1_referenceValue(fixture->cmp_ctx,
 222                                                            rand_data, size))
 223             || !TEST_true(OSSL_CMP_CTX_set1_secretValue(fixture->cmp_ctx,
 224                                                         rand_data + size,
 225                                                         size))) {
 226         tear_down(fixture);
 227         fixture = NULL;
 228     }
 229     EXECUTE_TEST(execute_MSG_protect_test, tear_down);
 230     return result;
 231 }
 232
 233 static int test_MSG_protect_with_certificate_and_key(void)
 234 {
 235     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 236     fixture->expected = 1;
 237
 238     if (!TEST_ptr(fixture->msg =
 239                   OSSL_CMP_MSG_dup(ir_unprotected))
 240             || !TEST_true(SET_OPT_UNPROTECTED_SEND(fixture->cmp_ctx, 0))
 241             || !TEST_true(OSSL_CMP_CTX_set1_pkey(fixture->cmp_ctx, loadedkey))
 242             || !TEST_true(OSSL_CMP_CTX_set1_clCert(fixture->cmp_ctx, cert))) {
 243         tear_down(fixture);
 244         fixture = NULL;
 245     }
 246     EXECUTE_TEST(execute_MSG_protect_test, tear_down);
 247     return result;
 248 }
 249
 250 static int test_MSG_protect_certificate_based_without_cert(void)
 251 {
 252     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 253     OSSL_CMP_CTX *ctx = fixture->cmp_ctx;
 254
 255     fixture->expected = 0;
 256     if (!TEST_ptr(fixture->msg =
 257                   OSSL_CMP_MSG_dup(ir_unprotected))
 258             || !TEST_true(SET_OPT_UNPROTECTED_SEND(ctx, 0))
 259             || !TEST_true(OSSL_CMP_CTX_set0_newPkey(ctx, 1, loadedkey))) {
 260         tear_down(fixture);
 261         fixture = NULL;
 262     }
 263     EVP_PKEY_up_ref(loadedkey);
 264     EXECUTE_TEST(execute_MSG_protect_test, tear_down);
 265     return result;
 266 }
 267
 268 static int test_MSG_protect_no_key_no_secret(void)
 269 {
 270     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 271     fixture->expected = 0;
 272     if (!TEST_ptr(fixture->msg = OSSL_CMP_MSG_dup(ir_unprotected))
 273             || !TEST_true(SET_OPT_UNPROTECTED_SEND(fixture->cmp_ctx, 0))) {
 274         tear_down(fixture);
 275         fixture = NULL;
 276     }
 277     EXECUTE_TEST(execute_MSG_protect_test, tear_down);
 278     return result;
 279 }
 280
 281 static int execute_MSG_add_extraCerts_test(CMP_PROTECT_TEST_FIXTURE *fixture)
 282 {
 283     return TEST_true(ossl_cmp_msg_add_extraCerts(fixture->cmp_ctx,
 284                                                  fixture->msg));
 285 }
 286
 287 static int test_MSG_add_extraCerts(void)
 288 {
 289     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 290     if (!TEST_ptr(fixture->msg = OSSL_CMP_MSG_dup(ir_protected))) {
 291         tear_down(fixture);
 292         fixture = NULL;
 293     }
 294     EXECUTE_TEST(execute_MSG_add_extraCerts_test, tear_down);
 295     return result;
 296 }
 297
 298 #ifndef OPENSSL_NO_EC
 299 /* The cert chain tests use EC certs so we skip them in no-ec builds */
 300 static int execute_cmp_build_cert_chain_test(CMP_PROTECT_TEST_FIXTURE *fixture)
 301 {
 302     STACK_OF(X509) *result = NULL;
 303     int ret = 0;
 304
 305     if (TEST_ptr(result = ossl_cmp_build_cert_chain(fixture->certs,
 306                                                     fixture->cert))) {
 307         /* Check whether chain built is equal to the expected one */
 308         ret = TEST_int_eq(0, STACK_OF_X509_cmp(result, fixture->chain));
 309         sk_X509_pop_free(result, X509_free);
 310     }
 311     return ret;
 312 }
 313
 314 static int test_cmp_build_cert_chain(void)
 315 {
 316     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 317     fixture->cert = endentity2;
 318     if (!TEST_ptr(fixture->certs = sk_X509_new_null())
 319             || !TEST_ptr(fixture->chain = sk_X509_new_null())
 320             || !TEST_true(sk_X509_push(fixture->certs, endentity1))
 321             || !TEST_true(sk_X509_push(fixture->certs, root))
 322             || !TEST_true(sk_X509_push(fixture->certs, intermediate))
 323             || !TEST_true(sk_X509_push(fixture->chain, endentity2))
 324             || !TEST_true(sk_X509_push(fixture->chain, intermediate))) {
 325         tear_down(fixture);
 326         fixture = NULL;
 327     }
 328     EXECUTE_TEST(execute_cmp_build_cert_chain_test, tear_down);
 329     return result;
 330 }
 331
 332 static int test_cmp_build_cert_chain_missing_intermediate(void)
 333 {
 334     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 335     fixture->cert = endentity2;
 336     if (!TEST_ptr(fixture->certs = sk_X509_new_null())
 337             || !TEST_ptr(fixture->chain = sk_X509_new_null())
 338             || !TEST_true(sk_X509_push(fixture->certs, endentity1))
 339             || !TEST_true(sk_X509_push(fixture->certs, root))
 340             || !TEST_true(sk_X509_push(fixture->chain, endentity2))) {
 341         tear_down(fixture);
 342         fixture = NULL;
 343     }
 344     EXECUTE_TEST(execute_cmp_build_cert_chain_test, tear_down);
 345     return result;
 346 }
 347
 348 static int test_cmp_build_cert_chain_missing_root(void)
 349 {
 350     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 351     fixture->cert = endentity2;
 352     if (!TEST_ptr(fixture->certs = sk_X509_new_null())
 353             || !TEST_ptr(fixture->chain = sk_X509_new_null())
 354             || !TEST_true(sk_X509_push(fixture->certs, endentity1))
 355             || !TEST_true(sk_X509_push(fixture->certs, intermediate))
 356             || !TEST_true(sk_X509_push(fixture->chain, endentity2))
 357             || !TEST_true(sk_X509_push(fixture->chain, intermediate))) {
 358         tear_down(fixture);
 359         fixture = NULL;
 360     }
 361     EXECUTE_TEST(execute_cmp_build_cert_chain_test, tear_down);
 362     return result;
 363 }
 364
 365 static int test_cmp_build_cert_chain_no_certs(void)
 366 {
 367     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 368     fixture->cert = endentity2;
 369     if (!TEST_ptr(fixture->certs = sk_X509_new_null())
 370             || !TEST_ptr(fixture->chain = sk_X509_new_null())
 371             || !TEST_true(sk_X509_push(fixture->chain, endentity2))) {
 372         tear_down(fixture);
 373         fixture = NULL;
 374     }
 375     EXECUTE_TEST(execute_cmp_build_cert_chain_test, tear_down);
 376     return result;
 377 }
 378 #endif /* OPENSSL_NO_EC */
 379
 380 static int execute_X509_STORE_test(CMP_PROTECT_TEST_FIXTURE *fixture)
 381 {
 382     X509_STORE *store = X509_STORE_new();
 383     STACK_OF(X509) *sk = NULL;
 384     int res = 0;
 385
 386     if (!TEST_true(ossl_cmp_X509_STORE_add1_certs(store,
 387                                                   fixture->certs,
 388                                                   fixture->callback_arg)))
 389         goto err;
 390     sk = ossl_cmp_X509_STORE_get1_certs(store);
 391     if (!TEST_int_eq(0, STACK_OF_X509_cmp(sk, fixture->chain)))
 392         goto err;
 393     res = 1;
 394  err:
 395     X509_STORE_free(store);
 396     sk_X509_pop_free(sk, X509_free);
 397     return res;
 398
 399 }
 400
 401 static int test_X509_STORE(void)
 402 {
 403     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 404     fixture->callback_arg = 0; /* self-issued allowed */
 405     if (!TEST_ptr(fixture->certs = sk_X509_new_null())
 406             || !sk_X509_push(fixture->certs, endentity1)
 407             || !sk_X509_push(fixture->certs, endentity2)
 408             || !sk_X509_push(fixture->certs, root)
 409             || !sk_X509_push(fixture->certs, intermediate)
 410             || !TEST_ptr(fixture->chain = sk_X509_dup(fixture->certs))) {
 411         tear_down(fixture);
 412         fixture = NULL;
 413     }
 414     EXECUTE_TEST(execute_X509_STORE_test, tear_down);
 415     return result;
 416 }
 417
 418 static int test_X509_STORE_only_self_issued(void)
 419 {
 420     SETUP_TEST_FIXTURE(CMP_PROTECT_TEST_FIXTURE, set_up);
 421     fixture->certs = sk_X509_new_null();
 422     fixture->chain = sk_X509_new_null();
 423     fixture->callback_arg = 1; /* only self-issued */
 424     if (!TEST_true(sk_X509_push(fixture->certs, endentity1))
 425             || !TEST_true(sk_X509_push(fixture->certs, endentity2))
 426             || !TEST_true(sk_X509_push(fixture->certs, root))
 427             || !TEST_true(sk_X509_push(fixture->certs, intermediate))
 428             || !TEST_true(sk_X509_push(fixture->chain, root))) {
 429         tear_down(fixture);
 430         fixture = NULL;
 431     }
 432     EXECUTE_TEST(execute_X509_STORE_test, tear_down);
 433     return result;
 434 }
 435
 436
 437 void cleanup_tests(void)
 438 {
 439     EVP_PKEY_free(loadedprivkey);
 440     EVP_PKEY_free(loadedpubkey);
 441     EVP_PKEY_free(loadedkey);
 442     X509_free(cert);
 443     X509_free(endentity1);
 444     X509_free(endentity2);
 445     X509_free(root);
 446     X509_free(intermediate);
 447     OSSL_CMP_MSG_free(ir_protected);
 448     OSSL_CMP_MSG_free(ir_unprotected);
 449
 450 }
 451
 452 int setup_tests(void)
 453 {
 454     char *server_f;
 455     char *server_key_f;
 456     char *server_cert_f;
 457     char *endentity1_f;
 458     char *endentity2_f;
 459     char *root_f;
 460     char *intermediate_f;
 461
 462     if (!test_skip_common_options()) {
 463         TEST_error("Error parsing test options\n");
 464         return 0;
 465     }
 466
 467     RAND_bytes(rand_data, OSSL_CMP_TRANSACTIONID_LENGTH);
 468     if (!TEST_ptr(server_f = test_get_argument(0))
 469             || !TEST_ptr(ir_protected_f = test_get_argument(1))
 470             || !TEST_ptr(ir_unprotected_f = test_get_argument(2))
 471             || !TEST_ptr(ip_PBM_f = test_get_argument(3))
 472             || !TEST_ptr(server_cert_f = test_get_argument(4))
 473             || !TEST_ptr(server_key_f = test_get_argument(5))
 474             || !TEST_ptr(endentity1_f = test_get_argument(6))
 475             || !TEST_ptr(endentity2_f = test_get_argument(7))
 476             || !TEST_ptr(root_f = test_get_argument(8))
 477             || !TEST_ptr(intermediate_f = test_get_argument(9))) {
 478         TEST_error("usage: cmp_protect_test server.pem "
 479                    "IR_protected.der IR_unprotected.der IP_PBM.der "
 480                    "server.crt server.pem"
 481                    "EndEntity1.crt EndEntity2.crt "
 482                    "Root_CA.crt Intermediate_CA.crt\n");
 483         return 0;
 484     }
 485     if (!TEST_ptr(loadedkey = load_pem_key(server_key_f))
 486             || !TEST_ptr(cert = load_pem_cert(server_cert_f)))
 487         return 0;
 488
 489     if (!TEST_ptr(loadedprivkey = load_pem_key(server_f)))
 490         return 0;
 491     if (TEST_true(EVP_PKEY_up_ref(loadedprivkey)))
 492         loadedpubkey = loadedprivkey;
 493     if (!TEST_ptr(ir_protected = load_pkimsg(ir_protected_f))
 494             || !TEST_ptr(ir_unprotected = load_pkimsg(ir_unprotected_f)))
 495         return 0;
 496     if (!TEST_ptr(endentity1 = load_pem_cert(endentity1_f))
 497             || !TEST_ptr(endentity2 = load_pem_cert(endentity2_f))
 498             || !TEST_ptr(root = load_pem_cert(root_f))
 499             || !TEST_ptr(intermediate = load_pem_cert(intermediate_f)))
 500         return 0;
 501     if (!TEST_int_eq(1, RAND_bytes(rand_data, OSSL_CMP_TRANSACTIONID_LENGTH)))
 502         return 0;
 503
 504     /* Message protection tests */
 505     ADD_TEST(test_cmp_calc_protection_no_key_no_secret);
 506     ADD_TEST(test_cmp_calc_protection_pkey);
 507     ADD_TEST(test_cmp_calc_protection_pbmac);
 508
 509     ADD_TEST(test_MSG_protect_with_msg_sig_alg_protection_plus_rsa_key);
 510     ADD_TEST(test_MSG_protect_with_certificate_and_key);
 511     ADD_TEST(test_MSG_protect_certificate_based_without_cert);
 512     ADD_TEST(test_MSG_protect_unprotected_request);
 513     ADD_TEST(test_MSG_protect_no_key_no_secret);
 514
 515     ADD_TEST(test_MSG_add_extraCerts);
 516
 517 #ifndef OPENSSL_NO_EC
 518     ADD_TEST(test_cmp_build_cert_chain);
 519     ADD_TEST(test_cmp_build_cert_chain_missing_root);
 520     ADD_TEST(test_cmp_build_cert_chain_missing_intermediate);
 521     ADD_TEST(test_cmp_build_cert_chain_no_certs);
 522 #endif
 523
 524     ADD_TEST(test_X509_STORE);
 525     ADD_TEST(test_X509_STORE_only_self_issued);
 526
 527     return 1;
 528 }