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 <openssl/evp.h>
  11 #include <openssl/err.h>
  12 #include <openssl/provider.h>
  13 #include <openssl/params.h>
  14 #include <openssl/fips_names.h>
  15 #include <openssl/core_names.h>
  16 #include <openssl/self_test.h>
  17 #include <openssl/fipskey.h>
  18 #include "apps.h"
  19 #include "progs.h"
  20
  21 #define BUFSIZE 4096
  22
  23 /* Configuration file values */
  24 #define VERSION_KEY  "version"
  25 #define VERSION_VAL  "1"
  26 #define INSTALL_STATUS_VAL "INSTALL_SELF_TEST_KATS_RUN"
  27
  28 static OSSL_CALLBACK self_test_events;
  29 static char *self_test_corrupt_desc = NULL;
  30 static char *self_test_corrupt_type = NULL;
  31 static int self_test_log = 1;
  32 static int quiet = 0;
  33
  34 typedef enum OPTION_choice {
  35     OPT_COMMON,
  36     OPT_IN, OPT_OUT, OPT_MODULE,
  37     OPT_PROV_NAME, OPT_SECTION_NAME, OPT_MAC_NAME, OPT_MACOPT, OPT_VERIFY,
  38     OPT_NO_LOG, OPT_CORRUPT_DESC, OPT_CORRUPT_TYPE, OPT_QUIET, OPT_CONFIG,
  39     OPT_NO_CONDITIONAL_ERRORS,
  40     OPT_NO_SECURITY_CHECKS,
  41     OPT_SELF_TEST_ONLOAD
  42 } OPTION_CHOICE;
  43
  44 const OPTIONS fipsinstall_options[] = {
  45     OPT_SECTION("General"),
  46     {"help", OPT_HELP, '-', "Display this summary"},
  47     {"verify", OPT_VERIFY, '-',
  48         "Verify a config file instead of generating one"},
  49     {"module", OPT_MODULE, '<', "File name of the provider module"},
  50     {"provider_name", OPT_PROV_NAME, 's', "FIPS provider name"},
  51     {"section_name", OPT_SECTION_NAME, 's',
  52      "FIPS Provider config section name (optional)"},
  53      {"no_conditional_errors", OPT_NO_CONDITIONAL_ERRORS, '-',
  54       "Disable the ability of the fips module to enter an error state if"
  55       " any conditional self tests fail"},
  56     {"no_security_checks", OPT_NO_SECURITY_CHECKS, '-',
  57      "Disable the run-time FIPS security checks in the module"},
  58     {"self_test_onload", OPT_SELF_TEST_ONLOAD, '-',
  59      "Forces self tests to always run on module load"},
  60     OPT_SECTION("Input"),
  61     {"in", OPT_IN, '<', "Input config file, used when verifying"},
  62
  63     OPT_SECTION("Output"),
  64     {"out", OPT_OUT, '>', "Output config file, used when generating"},
  65     {"mac_name", OPT_MAC_NAME, 's', "MAC name"},
  66     {"macopt", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form. "
  67                                 "See 'PARAMETER NAMES' in the EVP_MAC_ docs"},
  68     {"noout", OPT_NO_LOG, '-', "Disable logging of self test events"},
  69     {"corrupt_desc", OPT_CORRUPT_DESC, 's', "Corrupt a self test by description"},
  70     {"corrupt_type", OPT_CORRUPT_TYPE, 's', "Corrupt a self test by type"},
  71     {"config", OPT_CONFIG, '<', "The parent config to verify"},
  72     {"quiet", OPT_QUIET, '-', "No messages, just exit status"},
  73     {NULL}
  74 };
  75
  76 static int do_mac(EVP_MAC_CTX *ctx, unsigned char *tmp, BIO *in,
  77                   unsigned char *out, size_t *out_len)
  78 {
  79     int ret = 0;
  80     int i;
  81     size_t outsz = *out_len;
  82
  83     if (!EVP_MAC_init(ctx, NULL, 0, NULL))
  84         goto err;
  85     if (EVP_MAC_CTX_get_mac_size(ctx) > outsz)
  86         goto end;
  87     while ((i = BIO_read(in, (char *)tmp, BUFSIZE)) != 0) {
  88         if (i < 0 || !EVP_MAC_update(ctx, tmp, i))
  89             goto err;
  90     }
  91 end:
  92     if (!EVP_MAC_final(ctx, out, out_len, outsz))
  93         goto err;
  94     ret = 1;
  95 err:
  96     return ret;
  97 }
  98
  99 static int load_fips_prov_and_run_self_test(const char *prov_name)
 100 {
 101     int ret = 0;
 102     OSSL_PROVIDER *prov = NULL;
 103
 104     prov = OSSL_PROVIDER_load(NULL, prov_name);
 105     if (prov == NULL) {
 106         BIO_printf(bio_err, "Failed to load FIPS module\n");
 107         goto end;
 108     }
 109     ret = 1;
 110 end:
 111     OSSL_PROVIDER_unload(prov);
 112     return ret;
 113 }
 114
 115 static int print_mac(BIO *bio, const char *label, const unsigned char *mac,
 116                      size_t len)
 117 {
 118     int ret;
 119     char *hexstr = NULL;
 120
 121     hexstr = OPENSSL_buf2hexstr(mac, (long)len);
 122     if (hexstr == NULL)
 123         return 0;
 124     ret = BIO_printf(bio, "%s = %s\n", label, hexstr);
 125     OPENSSL_free(hexstr);
 126     return ret;
 127 }
 128
 129 static int write_config_header(BIO *out, const char *prov_name,
 130                                const char *section)
 131 {
 132     return BIO_printf(out, "openssl_conf = openssl_init\n\n")
 133            && BIO_printf(out, "[openssl_init]\n")
 134            && BIO_printf(out, "providers = provider_section\n\n")
 135            && BIO_printf(out, "[provider_section]\n")
 136            && BIO_printf(out, "%s = %s\n\n", prov_name, section);
 137 }
 138
 139 /*
 140  * Outputs a fips related config file that contains entries for the fips
 141  * module checksum, installation indicator checksum and the options
 142  * conditional_errors and security_checks.
 143  *
 144  * Returns 1 if the config file is written otherwise it returns 0 on error.
 145  */
 146 static int write_config_fips_section(BIO *out, const char *section,
 147                                      unsigned char *module_mac,
 148                                      size_t module_mac_len,
 149                                      int conditional_errors,
 150                                      int security_checks,
 151                                      unsigned char *install_mac,
 152                                      size_t install_mac_len)
 153 {
 154     int ret = 0;
 155
 156     if (BIO_printf(out, "[%s]\n", section) <= 0
 157         || BIO_printf(out, "activate = 1\n") <= 0
 158         || BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_INSTALL_VERSION,
 159                       VERSION_VAL) <= 0
 160         || BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_CONDITIONAL_ERRORS,
 161                       conditional_errors ? "1" : "0") <= 0
 162         || BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_SECURITY_CHECKS,
 163                       security_checks ? "1" : "0") <= 0
 164         || !print_mac(out, OSSL_PROV_FIPS_PARAM_MODULE_MAC, module_mac,
 165                       module_mac_len))
 166         goto end;
 167
 168     if (install_mac != NULL && install_mac_len > 0) {
 169         if (!print_mac(out, OSSL_PROV_FIPS_PARAM_INSTALL_MAC, install_mac,
 170                        install_mac_len)
 171             || BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_INSTALL_STATUS,
 172                           INSTALL_STATUS_VAL) <= 0)
 173         goto end;
 174     }
 175     ret = 1;
 176 end:
 177     return ret;
 178 }
 179
 180 static CONF *generate_config_and_load(const char *prov_name,
 181                                       const char *section,
 182                                       unsigned char *module_mac,
 183                                       size_t module_mac_len,
 184                                       int conditional_errors,
 185                                       int security_checks)
 186 {
 187     BIO *mem_bio = NULL;
 188     CONF *conf = NULL;
 189
 190     mem_bio = BIO_new(BIO_s_mem());
 191     if (mem_bio  == NULL)
 192         return 0;
 193     if (!write_config_header(mem_bio, prov_name, section)
 194          || !write_config_fips_section(mem_bio, section,
 195                                        module_mac, module_mac_len,
 196                                        conditional_errors,
 197                                        security_checks,
 198                                        NULL, 0))
 199         goto end;
 200
 201     conf = app_load_config_bio(mem_bio, NULL);
 202     if (conf == NULL)
 203         goto end;
 204
 205     if (CONF_modules_load(conf, NULL, 0) <= 0)
 206         goto end;
 207     BIO_free(mem_bio);
 208     return conf;
 209 end:
 210     NCONF_free(conf);
 211     BIO_free(mem_bio);
 212     return NULL;
 213 }
 214
 215 static void free_config_and_unload(CONF *conf)
 216 {
 217     if (conf != NULL) {
 218         NCONF_free(conf);
 219         CONF_modules_unload(1);
 220     }
 221 }
 222
 223 static int verify_module_load(const char *parent_config_file)
 224 {
 225     return OSSL_LIB_CTX_load_config(NULL, parent_config_file);
 226 }
 227
 228 /*
 229  * Returns 1 if the config file entries match the passed in module_mac and
 230  * install_mac values, otherwise it returns 0.
 231  */
 232 static int verify_config(const char *infile, const char *section,
 233                          unsigned char *module_mac, size_t module_mac_len,
 234                          unsigned char *install_mac, size_t install_mac_len)
 235 {
 236     int ret = 0;
 237     char *s = NULL;
 238     unsigned char *buf1 = NULL, *buf2 = NULL;
 239     long len;
 240     CONF *conf = NULL;
 241
 242     /* read in the existing values and check they match the saved values */
 243     conf = app_load_config(infile);
 244     if (conf == NULL)
 245         goto end;
 246
 247     s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_VERSION);
 248     if (s == NULL || strcmp(s, VERSION_VAL) != 0) {
 249         BIO_printf(bio_err, "version not found\n");
 250         goto end;
 251     }
 252     s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_MODULE_MAC);
 253     if (s == NULL) {
 254         BIO_printf(bio_err, "Module integrity MAC not found\n");
 255         goto end;
 256     }
 257     buf1 = OPENSSL_hexstr2buf(s, &len);
 258     if (buf1 == NULL
 259             || (size_t)len != module_mac_len
 260             || memcmp(module_mac, buf1, module_mac_len) != 0) {
 261         BIO_printf(bio_err, "Module integrity mismatch\n");
 262         goto end;
 263     }
 264     if (install_mac != NULL && install_mac_len > 0) {
 265         s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_STATUS);
 266         if (s == NULL || strcmp(s, INSTALL_STATUS_VAL) != 0) {
 267             BIO_printf(bio_err, "install status not found\n");
 268             goto end;
 269         }
 270         s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_MAC);
 271         if (s == NULL) {
 272             BIO_printf(bio_err, "Install indicator MAC not found\n");
 273             goto end;
 274         }
 275         buf2 = OPENSSL_hexstr2buf(s, &len);
 276         if (buf2 == NULL
 277                 || (size_t)len != install_mac_len
 278                 || memcmp(install_mac, buf2, install_mac_len) != 0) {
 279             BIO_printf(bio_err, "Install indicator status mismatch\n");
 280             goto end;
 281         }
 282     }
 283     ret = 1;
 284 end:
 285     OPENSSL_free(buf1);
 286     OPENSSL_free(buf2);
 287     NCONF_free(conf);
 288     return ret;
 289 }
 290
 291 int fipsinstall_main(int argc, char **argv)
 292 {
 293     int ret = 1, verify = 0, gotkey = 0, gotdigest = 0, self_test_onload = 0;
 294     int enable_conditional_errors = 1, enable_security_checks = 1;
 295     const char *section_name = "fips_sect";
 296     const char *mac_name = "HMAC";
 297     const char *prov_name = "fips";
 298     BIO *module_bio = NULL, *mem_bio = NULL, *fout = NULL;
 299     char *in_fname = NULL, *out_fname = NULL, *prog;
 300     char *module_fname = NULL, *parent_config = NULL, *module_path = NULL;
 301     const char *tail;
 302     EVP_MAC_CTX *ctx = NULL, *ctx2 = NULL;
 303     STACK_OF(OPENSSL_STRING) *opts = NULL;
 304     OPTION_CHOICE o;
 305     unsigned char *read_buffer = NULL;
 306     unsigned char module_mac[EVP_MAX_MD_SIZE];
 307     size_t module_mac_len = EVP_MAX_MD_SIZE;
 308     unsigned char install_mac[EVP_MAX_MD_SIZE];
 309     size_t install_mac_len = EVP_MAX_MD_SIZE;
 310     EVP_MAC *mac = NULL;
 311     CONF *conf = NULL;
 312
 313     if ((opts = sk_OPENSSL_STRING_new_null()) == NULL)
 314         goto end;
 315
 316     prog = opt_init(argc, argv, fipsinstall_options);
 317     while ((o = opt_next()) != OPT_EOF) {
 318         switch (o) {
 319         case OPT_EOF:
 320         case OPT_ERR:
 321 opthelp:
 322             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 323             goto cleanup;
 324         case OPT_HELP:
 325             opt_help(fipsinstall_options);
 326             ret = 0;
 327             goto end;
 328         case OPT_IN:
 329             in_fname = opt_arg();
 330             break;
 331         case OPT_OUT:
 332             out_fname = opt_arg();
 333             break;
 334         case OPT_NO_CONDITIONAL_ERRORS:
 335             enable_conditional_errors = 0;
 336             break;
 337         case OPT_NO_SECURITY_CHECKS:
 338             enable_security_checks = 0;
 339             break;
 340         case OPT_QUIET:
 341             quiet = 1;
 342             /* FALLTHROUGH */
 343         case OPT_NO_LOG:
 344             self_test_log = 0;
 345             break;
 346         case OPT_CORRUPT_DESC:
 347             self_test_corrupt_desc = opt_arg();
 348             break;
 349         case OPT_CORRUPT_TYPE:
 350             self_test_corrupt_type = opt_arg();
 351             break;
 352         case OPT_PROV_NAME:
 353             prov_name = opt_arg();
 354             break;
 355         case OPT_MODULE:
 356             module_fname = opt_arg();
 357             break;
 358         case OPT_SECTION_NAME:
 359             section_name = opt_arg();
 360             break;
 361         case OPT_MAC_NAME:
 362             mac_name = opt_arg();
 363             break;
 364         case OPT_CONFIG:
 365             parent_config = opt_arg();
 366             break;
 367         case OPT_MACOPT:
 368             if (!sk_OPENSSL_STRING_push(opts, opt_arg()))
 369                 goto opthelp;
 370             if (HAS_PREFIX(opt_arg(), "hexkey:"))
 371                 gotkey = 1;
 372             else if (HAS_PREFIX(opt_arg(), "digest:"))
 373                 gotdigest = 1;
 374             break;
 375         case OPT_VERIFY:
 376             verify = 1;
 377             break;
 378         case OPT_SELF_TEST_ONLOAD:
 379             self_test_onload = 1;
 380             break;
 381         }
 382     }
 383
 384     /* No extra arguments. */
 385     if (!opt_check_rest_arg(NULL))
 386         goto opthelp;
 387     if (verify && in_fname == NULL) {
 388         BIO_printf(bio_err, "Missing -in option for -verify\n");
 389         goto opthelp;
 390     }
 391
 392     if (parent_config != NULL) {
 393         /* Test that a parent config can load the module */
 394         if (verify_module_load(parent_config)) {
 395             ret = OSSL_PROVIDER_available(NULL, prov_name) ? 0 : 1;
 396             if (!quiet)
 397                 BIO_printf(bio_err, "FIPS provider is %s\n",
 398                            ret == 0 ? "available" : " not available");
 399         }
 400         goto end;
 401     }
 402     if (module_fname == NULL)
 403         goto opthelp;
 404
 405     tail = opt_path_end(module_fname);
 406     if (tail != NULL) {
 407         module_path = OPENSSL_strdup(module_fname);
 408         if (module_path == NULL)
 409             goto end;
 410         module_path[tail - module_fname] = '\0';
 411         if (!OSSL_PROVIDER_set_default_search_path(NULL, module_path))
 412             goto end;
 413     }
 414
 415     if (self_test_log
 416             || self_test_corrupt_desc != NULL
 417             || self_test_corrupt_type != NULL)
 418         OSSL_SELF_TEST_set_callback(NULL, self_test_events, NULL);
 419
 420     /* Use the default FIPS HMAC digest and key if not specified. */
 421     if (!gotdigest && !sk_OPENSSL_STRING_push(opts, "digest:SHA256"))
 422         goto end;
 423     if (!gotkey && !sk_OPENSSL_STRING_push(opts, "hexkey:" FIPS_KEY_STRING))
 424         goto end;
 425
 426     module_bio = bio_open_default(module_fname, 'r', FORMAT_BINARY);
 427     if (module_bio == NULL) {
 428         BIO_printf(bio_err, "Failed to open module file\n");
 429         goto end;
 430     }
 431
 432     read_buffer = app_malloc(BUFSIZE, "I/O buffer");
 433     if (read_buffer == NULL)
 434         goto end;
 435
 436     mac = EVP_MAC_fetch(app_get0_libctx(), mac_name, app_get0_propq());
 437     if (mac == NULL) {
 438         BIO_printf(bio_err, "Unable to get MAC of type %s\n", mac_name);
 439         goto end;
 440     }
 441
 442     ctx = EVP_MAC_CTX_new(mac);
 443     if (ctx == NULL) {
 444         BIO_printf(bio_err, "Unable to create MAC CTX for module check\n");
 445         goto end;
 446     }
 447
 448     if (opts != NULL) {
 449         int ok = 1;
 450         OSSL_PARAM *params =
 451             app_params_new_from_opts(opts, EVP_MAC_settable_ctx_params(mac));
 452
 453         if (params == NULL)
 454             goto end;
 455
 456         if (!EVP_MAC_CTX_set_params(ctx, params)) {
 457             BIO_printf(bio_err, "MAC parameter error\n");
 458             ERR_print_errors(bio_err);
 459             ok = 0;
 460         }
 461         app_params_free(params);
 462         if (!ok)
 463             goto end;
 464     }
 465
 466     ctx2 = EVP_MAC_CTX_dup(ctx);
 467     if (ctx2 == NULL) {
 468         BIO_printf(bio_err, "Unable to create MAC CTX for install indicator\n");
 469         goto end;
 470     }
 471
 472     if (!do_mac(ctx, read_buffer, module_bio, module_mac, &module_mac_len))
 473         goto end;
 474
 475     if (self_test_onload == 0) {
 476         mem_bio = BIO_new_mem_buf((const void *)INSTALL_STATUS_VAL,
 477                                   strlen(INSTALL_STATUS_VAL));
 478         if (mem_bio == NULL) {
 479             BIO_printf(bio_err, "Unable to create memory BIO\n");
 480             goto end;
 481         }
 482         if (!do_mac(ctx2, read_buffer, mem_bio, install_mac, &install_mac_len))
 483             goto end;
 484     } else {
 485         install_mac_len = 0;
 486     }
 487
 488     if (verify) {
 489         if (!verify_config(in_fname, section_name, module_mac, module_mac_len,
 490                            install_mac, install_mac_len))
 491             goto end;
 492         if (!quiet)
 493             BIO_printf(bio_err, "VERIFY PASSED\n");
 494     } else {
 495
 496         conf = generate_config_and_load(prov_name, section_name, module_mac,
 497                                         module_mac_len,
 498                                         enable_conditional_errors,
 499                                         enable_security_checks);
 500         if (conf == NULL)
 501             goto end;
 502         if (!load_fips_prov_and_run_self_test(prov_name))
 503             goto end;
 504
 505         fout =
 506             out_fname == NULL ? dup_bio_out(FORMAT_TEXT)
 507                               : bio_open_default(out_fname, 'w', FORMAT_TEXT);
 508         if (fout == NULL) {
 509             BIO_printf(bio_err, "Failed to open file\n");
 510             goto end;
 511         }
 512         if (!write_config_fips_section(fout, section_name,
 513                                        module_mac, module_mac_len,
 514                                        enable_conditional_errors,
 515                                        enable_security_checks,
 516                                        install_mac, install_mac_len))
 517             goto end;
 518         if (!quiet)
 519             BIO_printf(bio_err, "INSTALL PASSED\n");
 520     }
 521
 522     ret = 0;
 523 end:
 524     if (ret == 1) {
 525         if (!quiet)
 526             BIO_printf(bio_err, "%s FAILED\n", verify ? "VERIFY" : "INSTALL");
 527         ERR_print_errors(bio_err);
 528     }
 529
 530 cleanup:
 531     OPENSSL_free(module_path);
 532     BIO_free(fout);
 533     BIO_free(mem_bio);
 534     BIO_free(module_bio);
 535     sk_OPENSSL_STRING_free(opts);
 536     EVP_MAC_free(mac);
 537     EVP_MAC_CTX_free(ctx2);
 538     EVP_MAC_CTX_free(ctx);
 539     OPENSSL_free(read_buffer);
 540     free_config_and_unload(conf);
 541     return ret;
 542 }
 543
 544 static int self_test_events(const OSSL_PARAM params[], void *arg)
 545 {
 546     const OSSL_PARAM *p = NULL;
 547     const char *phase = NULL, *type = NULL, *desc = NULL;
 548     int ret = 0;
 549
 550     p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_PHASE);
 551     if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
 552         goto err;
 553     phase = (const char *)p->data;
 554
 555     p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_DESC);
 556     if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
 557         goto err;
 558     desc = (const char *)p->data;
 559
 560     p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_TYPE);
 561     if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
 562         goto err;
 563     type = (const char *)p->data;
 564
 565     if (self_test_log) {
 566         if (strcmp(phase, OSSL_SELF_TEST_PHASE_START) == 0)
 567             BIO_printf(bio_err, "%s : (%s) : ", desc, type);
 568         else if (strcmp(phase, OSSL_SELF_TEST_PHASE_PASS) == 0
 569                  || strcmp(phase, OSSL_SELF_TEST_PHASE_FAIL) == 0)
 570             BIO_printf(bio_err, "%s\n", phase);
 571     }
 572     /*
 573      * The self test code will internally corrupt the KAT test result if an
 574      * error is returned during the corrupt phase.
 575      */
 576     if (strcmp(phase, OSSL_SELF_TEST_PHASE_CORRUPT) == 0
 577             && (self_test_corrupt_desc != NULL
 578                 || self_test_corrupt_type != NULL)) {
 579         if (self_test_corrupt_desc != NULL
 580                 && strcmp(self_test_corrupt_desc, desc) != 0)
 581             goto end;
 582         if (self_test_corrupt_type != NULL
 583                 && strcmp(self_test_corrupt_type, type) != 0)
 584             goto end;
 585         BIO_printf(bio_err, "%s ", phase);
 586         goto err;
 587     }
 588 end:
 589     ret = 1;
 590 err:
 591     return ret;
 592 }