crypto/openssl/apps/fipsinstall.c

   1 /*
   2  * Copyright 2019-2021 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 #include <string.h>
  11 #include <openssl/evp.h>
  12 #include <openssl/err.h>
  13 #include <openssl/provider.h>
  14 #include <openssl/params.h>
  15 #include <openssl/fips_names.h>
  16 #include <openssl/core_names.h>
  17 #include <openssl/self_test.h>
  18 #include <openssl/fipskey.h>
  19 #include "apps.h"
  20 #include "progs.h"
  21
  22 #define BUFSIZE 4096
  23
  24 /* Configuration file values */
  25 #define VERSION_KEY  "version"
  26 #define VERSION_VAL  "1"
  27 #define INSTALL_STATUS_VAL "INSTALL_SELF_TEST_KATS_RUN"
  28
  29 static OSSL_CALLBACK self_test_events;
  30 static char *self_test_corrupt_desc = NULL;
  31 static char *self_test_corrupt_type = NULL;
  32 static int self_test_log = 1;
  33 static int quiet = 0;
  34
  35 typedef enum OPTION_choice {
  36     OPT_COMMON,
  37     OPT_IN, OPT_OUT, OPT_MODULE,
  38     OPT_PROV_NAME, OPT_SECTION_NAME, OPT_MAC_NAME, OPT_MACOPT, OPT_VERIFY,
  39     OPT_NO_LOG, OPT_CORRUPT_DESC, OPT_CORRUPT_TYPE, OPT_QUIET, OPT_CONFIG,
  40     OPT_NO_CONDITIONAL_ERRORS,
  41     OPT_NO_SECURITY_CHECKS,
  42     OPT_SELF_TEST_ONLOAD
  43 } OPTION_CHOICE;
  44
  45 const OPTIONS fipsinstall_options[] = {
  46     OPT_SECTION("General"),
  47     {"help", OPT_HELP, '-', "Display this summary"},
  48     {"verify", OPT_VERIFY, '-',
  49         "Verify a config file instead of generating one"},
  50     {"module", OPT_MODULE, '<', "File name of the provider module"},
  51     {"provider_name", OPT_PROV_NAME, 's', "FIPS provider name"},
  52     {"section_name", OPT_SECTION_NAME, 's',
  53      "FIPS Provider config section name (optional)"},
  54      {"no_conditional_errors", OPT_NO_CONDITIONAL_ERRORS, '-',
  55       "Disable the ability of the fips module to enter an error state if"
  56       " any conditional self tests fail"},
  57     {"no_security_checks", OPT_NO_SECURITY_CHECKS, '-',
  58      "Disable the run-time FIPS security checks in the module"},
  59     {"self_test_onload", OPT_SELF_TEST_ONLOAD, '-',
  60      "Forces self tests to always run on module load"},
  61     OPT_SECTION("Input"),
  62     {"in", OPT_IN, '<', "Input config file, used when verifying"},
  63
  64     OPT_SECTION("Output"),
  65     {"out", OPT_OUT, '>', "Output config file, used when generating"},
  66     {"mac_name", OPT_MAC_NAME, 's', "MAC name"},
  67     {"macopt", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form. "
  68                                 "See 'PARAMETER NAMES' in the EVP_MAC_ docs"},
  69     {"noout", OPT_NO_LOG, '-', "Disable logging of self test events"},
  70     {"corrupt_desc", OPT_CORRUPT_DESC, 's', "Corrupt a self test by description"},
  71     {"corrupt_type", OPT_CORRUPT_TYPE, 's', "Corrupt a self test by type"},
  72     {"config", OPT_CONFIG, '<', "The parent config to verify"},
  73     {"quiet", OPT_QUIET, '-', "No messages, just exit status"},
  74     {NULL}
  75 };
  76
  77 static int do_mac(EVP_MAC_CTX *ctx, unsigned char *tmp, BIO *in,
  78                   unsigned char *out, size_t *out_len)
  79 {
  80     int ret = 0;
  81     int i;
  82     size_t outsz = *out_len;
  83
  84     if (!EVP_MAC_init(ctx, NULL, 0, NULL))
  85         goto err;
  86     if (EVP_MAC_CTX_get_mac_size(ctx) > outsz)
  87         goto end;
  88     while ((i = BIO_read(in, (char *)tmp, BUFSIZE)) != 0) {
  89         if (i < 0 || !EVP_MAC_update(ctx, tmp, i))
  90             goto err;
  91     }
  92 end:
  93     if (!EVP_MAC_final(ctx, out, out_len, outsz))
  94         goto err;
  95     ret = 1;
  96 err:
  97     return ret;
  98 }
  99
 100 static int load_fips_prov_and_run_self_test(const char *prov_name)
 101 {
 102     int ret = 0;
 103     OSSL_PROVIDER *prov = NULL;
 104
 105     prov = OSSL_PROVIDER_load(NULL, prov_name);
 106     if (prov == NULL) {
 107         BIO_printf(bio_err, "Failed to load FIPS module\n");
 108         goto end;
 109     }
 110     ret = 1;
 111 end:
 112     OSSL_PROVIDER_unload(prov);
 113     return ret;
 114 }
 115
 116 static int print_mac(BIO *bio, const char *label, const unsigned char *mac,
 117                      size_t len)
 118 {
 119     int ret;
 120     char *hexstr = NULL;
 121
 122     hexstr = OPENSSL_buf2hexstr(mac, (long)len);
 123     if (hexstr == NULL)
 124         return 0;
 125     ret = BIO_printf(bio, "%s = %s\n", label, hexstr);
 126     OPENSSL_free(hexstr);
 127     return ret;
 128 }
 129
 130 static int write_config_header(BIO *out, const char *prov_name,
 131                                const char *section)
 132 {
 133     return BIO_printf(out, "openssl_conf = openssl_init\n\n")
 134            && BIO_printf(out, "[openssl_init]\n")
 135            && BIO_printf(out, "providers = provider_section\n\n")
 136            && BIO_printf(out, "[provider_section]\n")
 137            && BIO_printf(out, "%s = %s\n\n", prov_name, section);
 138 }
 139
 140 /*
 141  * Outputs a fips related config file that contains entries for the fips
 142  * module checksum, installation indicator checksum and the options
 143  * conditional_errors and security_checks.
 144  *
 145  * Returns 1 if the config file is written otherwise it returns 0 on error.
 146  */
 147 static int write_config_fips_section(BIO *out, const char *section,
 148                                      unsigned char *module_mac,
 149                                      size_t module_mac_len,
 150                                      int conditional_errors,
 151                                      int security_checks,
 152                                      unsigned char *install_mac,
 153                                      size_t install_mac_len)
 154 {
 155     int ret = 0;
 156
 157     if (BIO_printf(out, "[%s]\n", section) <= 0
 158         || BIO_printf(out, "activate = 1\n") <= 0
 159         || BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_INSTALL_VERSION,
 160                       VERSION_VAL) <= 0
 161         || BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_CONDITIONAL_ERRORS,
 162                       conditional_errors ? "1" : "0") <= 0
 163         || BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_SECURITY_CHECKS,
 164                       security_checks ? "1" : "0") <= 0
 165         || !print_mac(out, OSSL_PROV_FIPS_PARAM_MODULE_MAC, module_mac,
 166                       module_mac_len))
 167         goto end;
 168
 169     if (install_mac != NULL && install_mac_len > 0) {
 170         if (!print_mac(out, OSSL_PROV_FIPS_PARAM_INSTALL_MAC, install_mac,
 171                        install_mac_len)
 172             || BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_INSTALL_STATUS,
 173                           INSTALL_STATUS_VAL) <= 0)
 174         goto end;
 175     }
 176     ret = 1;
 177 end:
 178     return ret;
 179 }
 180
 181 static CONF *generate_config_and_load(const char *prov_name,
 182                                       const char *section,
 183                                       unsigned char *module_mac,
 184                                       size_t module_mac_len,
 185                                       int conditional_errors,
 186                                       int security_checks)
 187 {
 188     BIO *mem_bio = NULL;
 189     CONF *conf = NULL;
 190
 191     mem_bio = BIO_new(BIO_s_mem());
 192     if (mem_bio  == NULL)
 193         return 0;
 194     if (!write_config_header(mem_bio, prov_name, section)
 195          || !write_config_fips_section(mem_bio, section,
 196                                        module_mac, module_mac_len,
 197                                        conditional_errors,
 198                                        security_checks,
 199                                        NULL, 0))
 200         goto end;
 201
 202     conf = app_load_config_bio(mem_bio, NULL);
 203     if (conf == NULL)
 204         goto end;
 205
 206     if (CONF_modules_load(conf, NULL, 0) <= 0)
 207         goto end;
 208     BIO_free(mem_bio);
 209     return conf;
 210 end:
 211     NCONF_free(conf);
 212     BIO_free(mem_bio);
 213     return NULL;
 214 }
 215
 216 static void free_config_and_unload(CONF *conf)
 217 {
 218     if (conf != NULL) {
 219         NCONF_free(conf);
 220         CONF_modules_unload(1);
 221     }
 222 }
 223
 224 static int verify_module_load(const char *parent_config_file)
 225 {
 226     return OSSL_LIB_CTX_load_config(NULL, parent_config_file);
 227 }
 228
 229 /*
 230  * Returns 1 if the config file entries match the passed in module_mac and
 231  * install_mac values, otherwise it returns 0.
 232  */
 233 static int verify_config(const char *infile, const char *section,
 234                          unsigned char *module_mac, size_t module_mac_len,
 235                          unsigned char *install_mac, size_t install_mac_len)
 236 {
 237     int ret = 0;
 238     char *s = NULL;
 239     unsigned char *buf1 = NULL, *buf2 = NULL;
 240     long len;
 241     CONF *conf = NULL;
 242
 243     /* read in the existing values and check they match the saved values */
 244     conf = app_load_config(infile);
 245     if (conf == NULL)
 246         goto end;
 247
 248     s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_VERSION);
 249     if (s == NULL || strcmp(s, VERSION_VAL) != 0) {
 250         BIO_printf(bio_err, "version not found\n");
 251         goto end;
 252     }
 253     s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_MODULE_MAC);
 254     if (s == NULL) {
 255         BIO_printf(bio_err, "Module integrity MAC not found\n");
 256         goto end;
 257     }
 258     buf1 = OPENSSL_hexstr2buf(s, &len);
 259     if (buf1 == NULL
 260             || (size_t)len != module_mac_len
 261             || memcmp(module_mac, buf1, module_mac_len) != 0) {
 262         BIO_printf(bio_err, "Module integrity mismatch\n");
 263         goto end;
 264     }
 265     if (install_mac != NULL && install_mac_len > 0) {
 266         s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_STATUS);
 267         if (s == NULL || strcmp(s, INSTALL_STATUS_VAL) != 0) {
 268             BIO_printf(bio_err, "install status not found\n");
 269             goto end;
 270         }
 271         s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_MAC);
 272         if (s == NULL) {
 273             BIO_printf(bio_err, "Install indicator MAC not found\n");
 274             goto end;
 275         }
 276         buf2 = OPENSSL_hexstr2buf(s, &len);
 277         if (buf2 == NULL
 278                 || (size_t)len != install_mac_len
 279                 || memcmp(install_mac, buf2, install_mac_len) != 0) {
 280             BIO_printf(bio_err, "Install indicator status mismatch\n");
 281             goto end;
 282         }
 283     }
 284     ret = 1;
 285 end:
 286     OPENSSL_free(buf1);
 287     OPENSSL_free(buf2);
 288     NCONF_free(conf);
 289     return ret;
 290 }
 291
 292 int fipsinstall_main(int argc, char **argv)
 293 {
 294     int ret = 1, verify = 0, gotkey = 0, gotdigest = 0, self_test_onload = 0;
 295     int enable_conditional_errors = 1, enable_security_checks = 1;
 296     const char *section_name = "fips_sect";
 297     const char *mac_name = "HMAC";
 298     const char *prov_name = "fips";
 299     BIO *module_bio = NULL, *mem_bio = NULL, *fout = NULL;
 300     char *in_fname = NULL, *out_fname = NULL, *prog;
 301     char *module_fname = NULL, *parent_config = NULL, *module_path = NULL;
 302     const char *tail;
 303     EVP_MAC_CTX *ctx = NULL, *ctx2 = NULL;
 304     STACK_OF(OPENSSL_STRING) *opts = NULL;
 305     OPTION_CHOICE o;
 306     unsigned char *read_buffer = NULL;
 307     unsigned char module_mac[EVP_MAX_MD_SIZE];
 308     size_t module_mac_len = EVP_MAX_MD_SIZE;
 309     unsigned char install_mac[EVP_MAX_MD_SIZE];
 310     size_t install_mac_len = EVP_MAX_MD_SIZE;
 311     EVP_MAC *mac = NULL;
 312     CONF *conf = NULL;
 313
 314     if ((opts = sk_OPENSSL_STRING_new_null()) == NULL)
 315         goto end;
 316
 317     prog = opt_init(argc, argv, fipsinstall_options);
 318     while ((o = opt_next()) != OPT_EOF) {
 319         switch (o) {
 320         case OPT_EOF:
 321         case OPT_ERR:
 322 opthelp:
 323             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 324             goto cleanup;
 325         case OPT_HELP:
 326             opt_help(fipsinstall_options);
 327             ret = 0;
 328             goto end;
 329         case OPT_IN:
 330             in_fname = opt_arg();
 331             break;
 332         case OPT_OUT:
 333             out_fname = opt_arg();
 334             break;
 335         case OPT_NO_CONDITIONAL_ERRORS:
 336             enable_conditional_errors = 0;
 337             break;
 338         case OPT_NO_SECURITY_CHECKS:
 339             enable_security_checks = 0;
 340             break;
 341         case OPT_QUIET:
 342             quiet = 1;
 343             /* FALLTHROUGH */
 344         case OPT_NO_LOG:
 345             self_test_log = 0;
 346             break;
 347         case OPT_CORRUPT_DESC:
 348             self_test_corrupt_desc = opt_arg();
 349             break;
 350         case OPT_CORRUPT_TYPE:
 351             self_test_corrupt_type = opt_arg();
 352             break;
 353         case OPT_PROV_NAME:
 354             prov_name = opt_arg();
 355             break;
 356         case OPT_MODULE:
 357             module_fname = opt_arg();
 358             break;
 359         case OPT_SECTION_NAME:
 360             section_name = opt_arg();
 361             break;
 362         case OPT_MAC_NAME:
 363             mac_name = opt_arg();
 364             break;
 365         case OPT_CONFIG:
 366             parent_config = opt_arg();
 367             break;
 368         case OPT_MACOPT:
 369             if (!sk_OPENSSL_STRING_push(opts, opt_arg()))
 370                 goto opthelp;
 371             if (strncmp(opt_arg(), "hexkey:", 7) == 0)
 372                 gotkey = 1;
 373             else if (strncmp(opt_arg(), "digest:", 7) == 0)
 374                 gotdigest = 1;
 375             break;
 376         case OPT_VERIFY:
 377             verify = 1;
 378             break;
 379         case OPT_SELF_TEST_ONLOAD:
 380             self_test_onload = 1;
 381             break;
 382         }
 383     }
 384
 385     /* No extra arguments. */
 386     argc = opt_num_rest();
 387     if (argc != 0 || (verify && in_fname == NULL))
 388         goto opthelp;
 389
 390     if (parent_config != NULL) {
 391         /* Test that a parent config can load the module */
 392         if (verify_module_load(parent_config)) {
 393             ret = OSSL_PROVIDER_available(NULL, prov_name) ? 0 : 1;
 394             if (!quiet)
 395                 BIO_printf(bio_err, "FIPS provider is %s\n",
 396                            ret == 0 ? "available" : " not available");
 397         }
 398         goto end;
 399     }
 400     if (module_fname == NULL)
 401         goto opthelp;
 402
 403     tail = opt_path_end(module_fname);
 404     if (tail != NULL) {
 405         module_path = OPENSSL_strdup(module_fname);
 406         if (module_path == NULL)
 407             goto end;
 408         module_path[tail - module_fname] = '\0';
 409         if (!OSSL_PROVIDER_set_default_search_path(NULL, module_path))
 410             goto end;
 411     }
 412
 413     if (self_test_log
 414             || self_test_corrupt_desc != NULL
 415             || self_test_corrupt_type != NULL)
 416         OSSL_SELF_TEST_set_callback(NULL, self_test_events, NULL);
 417
 418     /* Use the default FIPS HMAC digest and key if not specified. */
 419     if (!gotdigest && !sk_OPENSSL_STRING_push(opts, "digest:SHA256"))
 420         goto end;
 421     if (!gotkey && !sk_OPENSSL_STRING_push(opts, "hexkey:" FIPS_KEY_STRING))
 422         goto end;
 423
 424     module_bio = bio_open_default(module_fname, 'r', FORMAT_BINARY);
 425     if (module_bio == NULL) {
 426         BIO_printf(bio_err, "Failed to open module file\n");
 427         goto end;
 428     }
 429
 430     read_buffer = app_malloc(BUFSIZE, "I/O buffer");
 431     if (read_buffer == NULL)
 432         goto end;
 433
 434     mac = EVP_MAC_fetch(app_get0_libctx(), mac_name, app_get0_propq());
 435     if (mac == NULL) {
 436         BIO_printf(bio_err, "Unable to get MAC of type %s\n", mac_name);
 437         goto end;
 438     }
 439
 440     ctx = EVP_MAC_CTX_new(mac);
 441     if (ctx == NULL) {
 442         BIO_printf(bio_err, "Unable to create MAC CTX for module check\n");
 443         goto end;
 444     }
 445
 446     if (opts != NULL) {
 447         int ok = 1;
 448         OSSL_PARAM *params =
 449             app_params_new_from_opts(opts, EVP_MAC_settable_ctx_params(mac));
 450
 451         if (params == NULL)
 452             goto end;
 453
 454         if (!EVP_MAC_CTX_set_params(ctx, params)) {
 455             BIO_printf(bio_err, "MAC parameter error\n");
 456             ERR_print_errors(bio_err);
 457             ok = 0;
 458         }
 459         app_params_free(params);
 460         if (!ok)
 461             goto end;
 462     }
 463
 464     ctx2 = EVP_MAC_CTX_dup(ctx);
 465     if (ctx2 == NULL) {
 466         BIO_printf(bio_err, "Unable to create MAC CTX for install indicator\n");
 467         goto end;
 468     }
 469
 470     if (!do_mac(ctx, read_buffer, module_bio, module_mac, &module_mac_len))
 471         goto end;
 472
 473     if (self_test_onload == 0) {
 474         mem_bio = BIO_new_mem_buf((const void *)INSTALL_STATUS_VAL,
 475                                   strlen(INSTALL_STATUS_VAL));
 476         if (mem_bio == NULL) {
 477             BIO_printf(bio_err, "Unable to create memory BIO\n");
 478             goto end;
 479         }
 480         if (!do_mac(ctx2, read_buffer, mem_bio, install_mac, &install_mac_len))
 481             goto end;
 482     } else {
 483         install_mac_len = 0;
 484     }
 485
 486     if (verify) {
 487         if (!verify_config(in_fname, section_name, module_mac, module_mac_len,
 488                            install_mac, install_mac_len))
 489             goto end;
 490         if (!quiet)
 491             BIO_printf(bio_err, "VERIFY PASSED\n");
 492     } else {
 493
 494         conf = generate_config_and_load(prov_name, section_name, module_mac,
 495                                         module_mac_len,
 496                                         enable_conditional_errors,
 497                                         enable_security_checks);
 498         if (conf == NULL)
 499             goto end;
 500         if (!load_fips_prov_and_run_self_test(prov_name))
 501             goto end;
 502
 503         fout =
 504             out_fname == NULL ? dup_bio_out(FORMAT_TEXT)
 505                               : bio_open_default(out_fname, 'w', FORMAT_TEXT);
 506         if (fout == NULL) {
 507             BIO_printf(bio_err, "Failed to open file\n");
 508             goto end;
 509         }
 510         if (!write_config_fips_section(fout, section_name,
 511                                        module_mac, module_mac_len,
 512                                        enable_conditional_errors,
 513                                        enable_security_checks,
 514                                        install_mac, install_mac_len))
 515             goto end;
 516         if (!quiet)
 517             BIO_printf(bio_err, "INSTALL PASSED\n");
 518     }
 519
 520     ret = 0;
 521 end:
 522     if (ret == 1) {
 523         if (!quiet)
 524             BIO_printf(bio_err, "%s FAILED\n", verify ? "VERIFY" : "INSTALL");
 525         ERR_print_errors(bio_err);
 526     }
 527
 528 cleanup:
 529     OPENSSL_free(module_path);
 530     BIO_free(fout);
 531     BIO_free(mem_bio);
 532     BIO_free(module_bio);
 533     sk_OPENSSL_STRING_free(opts);
 534     EVP_MAC_free(mac);
 535     EVP_MAC_CTX_free(ctx2);
 536     EVP_MAC_CTX_free(ctx);
 537     OPENSSL_free(read_buffer);
 538     free_config_and_unload(conf);
 539     return ret;
 540 }
 541
 542 static int self_test_events(const OSSL_PARAM params[], void *arg)
 543 {
 544     const OSSL_PARAM *p = NULL;
 545     const char *phase = NULL, *type = NULL, *desc = NULL;
 546     int ret = 0;
 547
 548     p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_PHASE);
 549     if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
 550         goto err;
 551     phase = (const char *)p->data;
 552
 553     p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_DESC);
 554     if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
 555         goto err;
 556     desc = (const char *)p->data;
 557
 558     p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_TYPE);
 559     if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
 560         goto err;
 561     type = (const char *)p->data;
 562
 563     if (self_test_log) {
 564         if (strcmp(phase, OSSL_SELF_TEST_PHASE_START) == 0)
 565             BIO_printf(bio_err, "%s : (%s) : ", desc, type);
 566         else if (strcmp(phase, OSSL_SELF_TEST_PHASE_PASS) == 0
 567                  || strcmp(phase, OSSL_SELF_TEST_PHASE_FAIL) == 0)
 568             BIO_printf(bio_err, "%s\n", phase);
 569     }
 570     /*
 571      * The self test code will internally corrupt the KAT test result if an
 572      * error is returned during the corrupt phase.
 573      */
 574     if (strcmp(phase, OSSL_SELF_TEST_PHASE_CORRUPT) == 0
 575             && (self_test_corrupt_desc != NULL
 576                 || self_test_corrupt_type != NULL)) {
 577         if (self_test_corrupt_desc != NULL
 578                 && strcmp(self_test_corrupt_desc, desc) != 0)
 579             goto end;
 580         if (self_test_corrupt_type != NULL
 581                 && strcmp(self_test_corrupt_type, type) != 0)
 582             goto end;
 583         BIO_printf(bio_err, "%s ", phase);
 584         goto err;
 585     }
 586 end:
 587     ret = 1;
 588 err:
 589     return ret;
 590 }