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