apps/fipsinstall.c

   1 /*
   2  * Copyright 2019-2020 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_STACK_OF_STRING()
  23
  24 #define BUFSIZE 4096
  25
  26 /* Configuration file values */
  27 #define VERSION_KEY  "version"
  28 #define VERSION_VAL  "1"
  29 #define INSTALL_STATUS_VAL "INSTALL_SELF_TEST_KATS_RUN"
  30
  31 static OSSL_CALLBACK self_test_events;
  32 static char *self_test_corrupt_desc = NULL;
  33 static char *self_test_corrupt_type = NULL;
  34 static int self_test_log = 1;
  35 static int quiet = 0;
  36
  37 typedef enum OPTION_choice {
  38     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  39     OPT_IN, OPT_OUT, OPT_MODULE,
  40     OPT_PROV_NAME, OPT_SECTION_NAME, OPT_MAC_NAME, OPT_MACOPT, OPT_VERIFY,
  41     OPT_NO_LOG, OPT_CORRUPT_DESC, OPT_CORRUPT_TYPE, OPT_QUIET
  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
  54     OPT_SECTION("Input"),
  55     {"in", OPT_IN, '<', "Input config file, used when verifying"},
  56
  57     OPT_SECTION("Output"),
  58     {"out", OPT_OUT, '>', "Output config file, used when generating"},
  59     {"mac_name", OPT_MAC_NAME, 's', "MAC name"},
  60     {"macopt", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form. "
  61                                 "See 'PARAMETER NAMES' in the EVP_MAC_ docs"},
  62     {"noout", OPT_NO_LOG, '-', "Disable logging of self test events"},
  63     {"corrupt_desc", OPT_CORRUPT_DESC, 's', "Corrupt a self test by description"},
  64     {"corrupt_type", OPT_CORRUPT_TYPE, 's', "Corrupt a self test by type"},
  65     {"quiet", OPT_QUIET, '-', "No messages, just exit status"},
  66     {NULL}
  67 };
  68
  69 static int do_mac(EVP_MAC_CTX *ctx, unsigned char *tmp, BIO *in,
  70                   unsigned char *out, size_t *out_len)
  71 {
  72     int ret = 0;
  73     int i;
  74     size_t outsz = *out_len;
  75
  76     if (!EVP_MAC_init(ctx))
  77         goto err;
  78     if (EVP_MAC_size(ctx) > outsz)
  79         goto end;
  80     while ((i = BIO_read(in, (char *)tmp, BUFSIZE)) != 0) {
  81         if (i < 0 || !EVP_MAC_update(ctx, tmp, i))
  82             goto err;
  83     }
  84 end:
  85     if (!EVP_MAC_final(ctx, out, out_len, outsz))
  86         goto err;
  87     ret = 1;
  88 err:
  89     return ret;
  90 }
  91
  92 static int load_fips_prov_and_run_self_test(const char *prov_name)
  93 {
  94     int ret = 0;
  95     OSSL_PROVIDER *prov = NULL;
  96
  97     prov = OSSL_PROVIDER_load(NULL, prov_name);
  98     if (prov == NULL) {
  99         BIO_printf(bio_err, "Failed to load FIPS module\n");
 100         goto end;
 101     }
 102     ret = 1;
 103 end:
 104     OSSL_PROVIDER_unload(prov);
 105     return ret;
 106 }
 107
 108 static int print_mac(BIO *bio, const char *label, const unsigned char *mac,
 109                      size_t len)
 110 {
 111     int ret;
 112     char *hexstr = NULL;
 113
 114     hexstr = OPENSSL_buf2hexstr(mac, (long)len);
 115     if (hexstr == NULL)
 116         return 0;
 117     ret = BIO_printf(bio, "%s = %s\n", label, hexstr);
 118     OPENSSL_free(hexstr);
 119     return ret;
 120 }
 121
 122 static int write_config_header(BIO *out, const char *prov_name,
 123                                const char *section)
 124 {
 125     return BIO_printf(out, "openssl_conf = openssl_init\n\n")
 126            && BIO_printf(out, "[openssl_init]\n")
 127            && BIO_printf(out, "providers = provider_section\n\n")
 128            && BIO_printf(out, "[provider_section]\n")
 129            && BIO_printf(out, "%s = %s\n\n", prov_name, section);
 130 }
 131
 132 /*
 133  * Outputs a fips related config file that contains entries for the fips
 134  * module checksum and the installation indicator checksum.
 135  *
 136  * Returns 1 if the config file is written otherwise it returns 0 on error.
 137  */
 138 static int write_config_fips_section(BIO *out, const char *section,
 139                                      unsigned char *module_mac,
 140                                      size_t module_mac_len,
 141                                      unsigned char *install_mac,
 142                                      size_t install_mac_len)
 143 {
 144     int ret = 0;
 145
 146     if (!(BIO_printf(out, "[%s]\n", section) > 0
 147           && BIO_printf(out, "activate = 1\n") > 0
 148           && BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_INSTALL_VERSION,
 149                         VERSION_VAL) > 0
 150           && print_mac(out, OSSL_PROV_FIPS_PARAM_MODULE_MAC, module_mac,
 151                        module_mac_len)))
 152         goto end;
 153
 154     if (install_mac != NULL) {
 155         if (!(print_mac(out, OSSL_PROV_FIPS_PARAM_INSTALL_MAC, install_mac,
 156                       install_mac_len)
 157               && BIO_printf(out, "%s = %s\n",
 158                             OSSL_PROV_FIPS_PARAM_INSTALL_STATUS,
 159                             INSTALL_STATUS_VAL) > 0))
 160         goto end;
 161     }
 162     ret = 1;
 163 end:
 164     return ret;
 165 }
 166
 167 static CONF *generate_config_and_load(const char *prov_name,
 168                                       const char *section,
 169                                       unsigned char *module_mac,
 170                                       size_t module_mac_len)
 171 {
 172     BIO *mem_bio = NULL;
 173     CONF *conf = NULL;
 174
 175     mem_bio = BIO_new(BIO_s_mem());
 176     if (mem_bio  == NULL)
 177         return 0;
 178     if (!write_config_header(mem_bio, prov_name, section)
 179          || !write_config_fips_section(mem_bio, section, module_mac,
 180                                        module_mac_len, NULL, 0))
 181         goto end;
 182
 183     conf = app_load_config_bio(mem_bio, NULL);
 184     if (conf == NULL)
 185         goto end;
 186
 187     if (CONF_modules_load(conf, NULL, 0) <= 0)
 188         goto end;
 189     BIO_free(mem_bio);
 190     return conf;
 191 end:
 192     NCONF_free(conf);
 193     BIO_free(mem_bio);
 194     return NULL;
 195 }
 196
 197 static void free_config_and_unload(CONF *conf)
 198 {
 199     if (conf != NULL) {
 200         NCONF_free(conf);
 201         CONF_modules_unload(1);
 202     }
 203 }
 204
 205 /*
 206  * Returns 1 if the config file entries match the passed in module_mac and
 207  * install_mac values, otherwise it returns 0.
 208  */
 209 static int verify_config(const char *infile, const char *section,
 210                          unsigned char *module_mac, size_t module_mac_len,
 211                          unsigned char *install_mac, size_t install_mac_len)
 212 {
 213     int ret = 0;
 214     char *s = NULL;
 215     unsigned char *buf1 = NULL, *buf2 = NULL;
 216     long len;
 217     CONF *conf = NULL;
 218
 219     /* read in the existing values and check they match the saved values */
 220     conf = app_load_config(infile);
 221     if (conf == NULL)
 222         goto end;
 223
 224     s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_VERSION);
 225     if (s == NULL || strcmp(s, VERSION_VAL) != 0) {
 226         BIO_printf(bio_err, "version not found\n");
 227         goto end;
 228     }
 229     s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_STATUS);
 230     if (s == NULL || strcmp(s, INSTALL_STATUS_VAL) != 0) {
 231         BIO_printf(bio_err, "install status not found\n");
 232         goto end;
 233     }
 234     s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_MODULE_MAC);
 235     if (s == NULL) {
 236         BIO_printf(bio_err, "Module integrity MAC not found\n");
 237         goto end;
 238     }
 239     buf1 = OPENSSL_hexstr2buf(s, &len);
 240     if (buf1 == NULL
 241             || (size_t)len != module_mac_len
 242             || memcmp(module_mac, buf1, module_mac_len) != 0) {
 243         BIO_printf(bio_err, "Module integrity mismatch\n");
 244         goto end;
 245     }
 246     s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_MAC);
 247     if (s == NULL) {
 248         BIO_printf(bio_err, "Install indicator MAC not found\n");
 249         goto end;
 250     }
 251     buf2 = OPENSSL_hexstr2buf(s, &len);
 252     if (buf2 == NULL
 253             || (size_t)len != install_mac_len
 254             || memcmp(install_mac, buf2, install_mac_len) != 0) {
 255         BIO_printf(bio_err, "Install indicator status mismatch\n");
 256         goto end;
 257     }
 258     ret = 1;
 259 end:
 260     OPENSSL_free(buf1);
 261     OPENSSL_free(buf2);
 262     NCONF_free(conf);
 263     return ret;
 264 }
 265
 266 int fipsinstall_main(int argc, char **argv)
 267 {
 268     int ret = 1, verify = 0, gotkey = 0, gotdigest = 0;
 269     const char *section_name = "fips_sect";
 270     const char *mac_name = "HMAC";
 271     const char *prov_name = "fips";
 272     BIO *module_bio = NULL, *mem_bio = NULL, *fout = NULL;
 273     char *in_fname = NULL, *out_fname = NULL, *prog;
 274     char *module_fname = NULL;
 275     EVP_MAC_CTX *ctx = NULL, *ctx2 = NULL;
 276     STACK_OF(OPENSSL_STRING) *opts = NULL;
 277     OPTION_CHOICE o;
 278     unsigned char *read_buffer = NULL;
 279     unsigned char module_mac[EVP_MAX_MD_SIZE];
 280     size_t module_mac_len = EVP_MAX_MD_SIZE;
 281     unsigned char install_mac[EVP_MAX_MD_SIZE];
 282     size_t install_mac_len = EVP_MAX_MD_SIZE;
 283     EVP_MAC *mac = NULL;
 284     CONF *conf = NULL;
 285
 286     if ((opts = sk_OPENSSL_STRING_new_null()) == NULL)
 287         goto end;
 288
 289     prog = opt_init(argc, argv, fipsinstall_options);
 290     while ((o = opt_next()) != OPT_EOF) {
 291         switch (o) {
 292         case OPT_EOF:
 293         case OPT_ERR:
 294 opthelp:
 295             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 296             goto cleanup;
 297         case OPT_HELP:
 298             opt_help(fipsinstall_options);
 299             ret = 0;
 300             goto end;
 301         case OPT_IN:
 302             in_fname = opt_arg();
 303             break;
 304         case OPT_OUT:
 305             out_fname = opt_arg();
 306             break;
 307         case OPT_QUIET:
 308             quiet = 1;
 309             /* FALLTHROUGH */
 310         case OPT_NO_LOG:
 311             self_test_log = 0;
 312             break;
 313         case OPT_CORRUPT_DESC:
 314             self_test_corrupt_desc = opt_arg();
 315             break;
 316         case OPT_CORRUPT_TYPE:
 317             self_test_corrupt_type = opt_arg();
 318             break;
 319         case OPT_PROV_NAME:
 320             prov_name = opt_arg();
 321             break;
 322         case OPT_MODULE:
 323             module_fname = opt_arg();
 324             break;
 325         case OPT_SECTION_NAME:
 326             section_name = opt_arg();
 327             break;
 328         case OPT_MAC_NAME:
 329             mac_name = opt_arg();
 330             break;
 331         case OPT_MACOPT:
 332             if (!sk_OPENSSL_STRING_push(opts, opt_arg()))
 333                 goto opthelp;
 334             if (strncmp(opt_arg(), "hexkey:", 7) == 0)
 335                 gotkey = 1;
 336             else if (strncmp(opt_arg(), "digest:", 7) == 0)
 337                 gotdigest = 1;
 338             break;
 339         case OPT_VERIFY:
 340             verify = 1;
 341             break;
 342         }
 343     }
 344     argc = opt_num_rest();
 345     if (module_fname == NULL
 346         || (verify && in_fname == NULL)
 347         || (!verify && out_fname == NULL)
 348         || argc != 0)
 349         goto opthelp;
 350
 351     if (self_test_log
 352             || self_test_corrupt_desc != NULL
 353             || self_test_corrupt_type != NULL)
 354         OSSL_SELF_TEST_set_callback(NULL, self_test_events, NULL);
 355
 356     /* Use the default FIPS HMAC digest and key if not specified. */
 357     if (!gotdigest && !sk_OPENSSL_STRING_push(opts, "digest:SHA256"))
 358         goto end;
 359     if (!gotkey && !sk_OPENSSL_STRING_push(opts, "hexkey:" FIPS_KEY_STRING))
 360         goto end;
 361
 362     module_bio = bio_open_default(module_fname, 'r', FORMAT_BINARY);
 363     if (module_bio == NULL) {
 364         BIO_printf(bio_err, "Failed to open module file\n");
 365         goto end;
 366     }
 367
 368     read_buffer = app_malloc(BUFSIZE, "I/O buffer");
 369     if (read_buffer == NULL)
 370         goto end;
 371
 372     mac = EVP_MAC_fetch(NULL, mac_name, NULL);
 373     if (mac == NULL) {
 374         BIO_printf(bio_err, "Unable to get MAC of type %s\n", mac_name);
 375         goto end;
 376     }
 377
 378     ctx = EVP_MAC_CTX_new(mac);
 379     if (ctx == NULL) {
 380         BIO_printf(bio_err, "Unable to create MAC CTX for module check\n");
 381         goto end;
 382     }
 383
 384     if (opts != NULL) {
 385         int ok = 1;
 386         OSSL_PARAM *params =
 387             app_params_new_from_opts(opts, EVP_MAC_settable_ctx_params(mac));
 388
 389         if (params == NULL)
 390             goto end;
 391
 392         if (!EVP_MAC_CTX_set_params(ctx, params)) {
 393             BIO_printf(bio_err, "MAC parameter error\n");
 394             ERR_print_errors(bio_err);
 395             ok = 0;
 396         }
 397         app_params_free(params);
 398         if (!ok)
 399             goto end;
 400     }
 401
 402     ctx2 = EVP_MAC_CTX_dup(ctx);
 403     if (ctx2 == NULL) {
 404         BIO_printf(bio_err, "Unable to create MAC CTX for install indicator\n");
 405         goto end;
 406     }
 407
 408     if (!do_mac(ctx, read_buffer, module_bio, module_mac, &module_mac_len))
 409         goto end;
 410
 411     mem_bio = BIO_new_mem_buf((const void *)INSTALL_STATUS_VAL,
 412                               strlen(INSTALL_STATUS_VAL));
 413     if (mem_bio == NULL) {
 414         BIO_printf(bio_err, "Unable to create memory BIO\n");
 415         goto end;
 416     }
 417     if (!do_mac(ctx2, read_buffer, mem_bio, install_mac, &install_mac_len))
 418         goto end;
 419
 420     if (verify) {
 421         if (!verify_config(in_fname, section_name, module_mac, module_mac_len,
 422                            install_mac, install_mac_len))
 423             goto end;
 424         if (!quiet)
 425             BIO_printf(bio_out, "VERIFY PASSED\n");
 426     } else {
 427
 428         conf = generate_config_and_load(prov_name, section_name, module_mac,
 429                                         module_mac_len);
 430         if (conf == NULL)
 431             goto end;
 432         if (!load_fips_prov_and_run_self_test(prov_name))
 433             goto end;
 434
 435         fout = bio_open_default(out_fname, 'w', FORMAT_TEXT);
 436         if (fout == NULL) {
 437             BIO_printf(bio_err, "Failed to open file\n");
 438             goto end;
 439         }
 440         if (!write_config_fips_section(fout, section_name, module_mac,
 441                                        module_mac_len, install_mac,
 442                                        install_mac_len))
 443             goto end;
 444         if (!quiet)
 445             BIO_printf(bio_out, "INSTALL PASSED\n");
 446     }
 447
 448     ret = 0;
 449 end:
 450     if (ret == 1) {
 451         if (!quiet)
 452             BIO_printf(bio_err, "%s FAILED\n", verify ? "VERIFY" : "INSTALL");
 453         ERR_print_errors(bio_err);
 454     }
 455
 456 cleanup:
 457     BIO_free(fout);
 458     BIO_free(mem_bio);
 459     BIO_free(module_bio);
 460     sk_OPENSSL_STRING_free(opts);
 461     EVP_MAC_free(mac);
 462     EVP_MAC_CTX_free(ctx2);
 463     EVP_MAC_CTX_free(ctx);
 464     OPENSSL_free(read_buffer);
 465     free_config_and_unload(conf);
 466     return ret;
 467 }
 468
 469 static int self_test_events(const OSSL_PARAM params[], void *arg)
 470 {
 471     const OSSL_PARAM *p = NULL;
 472     const char *phase = NULL, *type = NULL, *desc = NULL;
 473     int ret = 0;
 474
 475     p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_PHASE);
 476     if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
 477         goto err;
 478     phase = (const char *)p->data;
 479
 480     p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_DESC);
 481     if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
 482         goto err;
 483     desc = (const char *)p->data;
 484
 485     p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_TYPE);
 486     if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
 487         goto err;
 488     type = (const char *)p->data;
 489
 490     if (self_test_log) {
 491         if (strcmp(phase, OSSL_SELF_TEST_PHASE_START) == 0)
 492             BIO_printf(bio_out, "%s : (%s) : ", desc, type);
 493         else if (strcmp(phase, OSSL_SELF_TEST_PHASE_PASS) == 0
 494                  || strcmp(phase, OSSL_SELF_TEST_PHASE_FAIL) == 0)
 495             BIO_printf(bio_out, "%s\n", phase);
 496     }
 497     /*
 498      * The self test code will internally corrupt the KAT test result if an
 499      * error is returned during the corrupt phase.
 500      */
 501     if (strcmp(phase, OSSL_SELF_TEST_PHASE_CORRUPT) == 0
 502             && (self_test_corrupt_desc != NULL
 503                 || self_test_corrupt_type != NULL)) {
 504         if (self_test_corrupt_desc != NULL
 505                 && strcmp(self_test_corrupt_desc, desc) != 0)
 506             goto end;
 507         if (self_test_corrupt_type != NULL
 508                 && strcmp(self_test_corrupt_type, type) != 0)
 509             goto end;
 510         BIO_printf(bio_out, "%s ", phase);
 511         goto err;
 512     }
 513 end:
 514     ret = 1;
 515 err:
 516     return ret;
 517 }