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openssl/apps/fipsinstall.c
Pauli bc2a4225a4 fipsinstall: add -pedantic option 
This adds a -pedantic option to fipsinstall that adjusts the various
settings to ensure strict FIPS compliance rather than backwards
compatibility.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/20752)
2023-04-20 09:21:51 +10:00

673 lines
22 KiB
C
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/*
* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/provider.h>
#include <openssl/params.h>
#include <openssl/fips_names.h>
#include <openssl/core_names.h>
#include <openssl/self_test.h>
#include <openssl/fipskey.h>
#include "apps.h"
#include "progs.h"
#define BUFSIZE 4096
/* Configuration file values */
#define VERSION_KEY "version"
#define VERSION_VAL "1"
#define INSTALL_STATUS_VAL "INSTALL_SELF_TEST_KATS_RUN"
static OSSL_CALLBACK self_test_events;
static char *self_test_corrupt_desc = NULL;
static char *self_test_corrupt_type = NULL;
static int self_test_log = 1;
static int quiet = 0;
typedef enum OPTION_choice {
OPT_COMMON,
OPT_IN, OPT_OUT, OPT_MODULE, OPT_PEDANTIC,
OPT_PROV_NAME, OPT_SECTION_NAME, OPT_MAC_NAME, OPT_MACOPT, OPT_VERIFY,
OPT_NO_LOG, OPT_CORRUPT_DESC, OPT_CORRUPT_TYPE, OPT_QUIET, OPT_CONFIG,
OPT_NO_CONDITIONAL_ERRORS,
OPT_NO_SECURITY_CHECKS,
OPT_TLS_PRF_EMS_CHECK,
OPT_DISALLOW_DRGB_TRUNC_DIGEST,
OPT_SELF_TEST_ONLOAD, OPT_SELF_TEST_ONINSTALL
} OPTION_CHOICE;
const OPTIONS fipsinstall_options[] = {
OPT_SECTION("General"),
{"help", OPT_HELP, '-', "Display this summary"},
{"pedantic", OPT_PEDANTIC, '-', "Set options for strict FIPS compliance"},
{"verify", OPT_VERIFY, '-',
"Verify a config file instead of generating one"},
{"module", OPT_MODULE, '<', "File name of the provider module"},
{"provider_name", OPT_PROV_NAME, 's', "FIPS provider name"},
{"section_name", OPT_SECTION_NAME, 's',
"FIPS Provider config section name (optional)"},
{"no_conditional_errors", OPT_NO_CONDITIONAL_ERRORS, '-',
"Disable the ability of the fips module to enter an error state if"
" any conditional self tests fail"},
{"no_security_checks", OPT_NO_SECURITY_CHECKS, '-',
"Disable the run-time FIPS security checks in the module"},
{"self_test_onload", OPT_SELF_TEST_ONLOAD, '-',
"Forces self tests to always run on module load"},
{"self_test_oninstall", OPT_SELF_TEST_ONINSTALL, '-',
"Forces self tests to run once on module installation"},
{"ems_check", OPT_TLS_PRF_EMS_CHECK, '-',
"Enable the run-time FIPS check for EMS during TLS1_PRF"},
{"no_drbg_truncated_digests", OPT_DISALLOW_DRGB_TRUNC_DIGEST, '-',
"Disallow truncated digests with Hash and HMAC DRBGs"},
OPT_SECTION("Input"),
{"in", OPT_IN, '<', "Input config file, used when verifying"},
OPT_SECTION("Output"),
{"out", OPT_OUT, '>', "Output config file, used when generating"},
{"mac_name", OPT_MAC_NAME, 's', "MAC name"},
{"macopt", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form."},
{OPT_MORE_STR, 0, 0, "See 'PARAMETER NAMES' in the EVP_MAC_ docs"},
{"noout", OPT_NO_LOG, '-', "Disable logging of self test events"},
{"corrupt_desc", OPT_CORRUPT_DESC, 's', "Corrupt a self test by description"},
{"corrupt_type", OPT_CORRUPT_TYPE, 's', "Corrupt a self test by type"},
{"config", OPT_CONFIG, '<', "The parent config to verify"},
{"quiet", OPT_QUIET, '-', "No messages, just exit status"},
{NULL}
};
typedef struct {
unsigned int self_test_onload : 1;
unsigned int conditional_errors : 1;
unsigned int security_checks : 1;
unsigned int tls_prf_ems_check : 1;
unsigned int drgb_no_trunc_dgst : 1;
} FIPS_OPTS;
/* Pedantic FIPS compliance */
static const FIPS_OPTS pedantic_opts = {
1, /* self_test_onload */
1, /* conditional_errors */
1, /* security_checks */
1, /* tls_prf_ems_check */
1, /* drgb_no_trunc_dgst */
};
/* Default FIPS settings for backward compatibility */
static FIPS_OPTS fips_opts = {
1, /* self_test_onload */
1, /* conditional_errors */
1, /* security_checks */
0, /* tls_prf_ems_check */
0, /* drgb_no_trunc_dgst */
};
static int check_non_pedantic_fips(int pedantic, const char *name)
{
if (pedantic) {
BIO_printf(bio_err, "Cannot specify -%s after -pedantic\n", name);
return 0;
}
return 1;
}
static int do_mac(EVP_MAC_CTX *ctx, unsigned char *tmp, BIO *in,
unsigned char *out, size_t *out_len)
{
int ret = 0;
int i;
size_t outsz = *out_len;
if (!EVP_MAC_init(ctx, NULL, 0, NULL))
goto err;
if (EVP_MAC_CTX_get_mac_size(ctx) > outsz)
goto end;
while ((i = BIO_read(in, (char *)tmp, BUFSIZE)) != 0) {
if (i < 0 || !EVP_MAC_update(ctx, tmp, i))
goto err;
}
end:
if (!EVP_MAC_final(ctx, out, out_len, outsz))
goto err;
ret = 1;
err:
return ret;
}
static int load_fips_prov_and_run_self_test(const char *prov_name)
{
int ret = 0;
OSSL_PROVIDER *prov = NULL;
OSSL_PARAM params[4], *p = params;
char *name = "", *vers = "", *build = "";
prov = OSSL_PROVIDER_load(NULL, prov_name);
if (prov == NULL) {
BIO_printf(bio_err, "Failed to load FIPS module\n");
goto end;
}
if (!quiet) {
*p++ = OSSL_PARAM_construct_utf8_ptr(OSSL_PROV_PARAM_NAME,
&name, sizeof(name));
*p++ = OSSL_PARAM_construct_utf8_ptr(OSSL_PROV_PARAM_VERSION,
&vers, sizeof(vers));
*p++ = OSSL_PARAM_construct_utf8_ptr(OSSL_PROV_PARAM_BUILDINFO,
&build, sizeof(build));
*p = OSSL_PARAM_construct_end();
if (!OSSL_PROVIDER_get_params(prov, params)) {
BIO_printf(bio_err, "Failed to query FIPS module parameters\n");
goto end;
}
if (OSSL_PARAM_modified(params))
BIO_printf(bio_err, "\t%-10s\t%s\n", "name:", name);
if (OSSL_PARAM_modified(params + 1))
BIO_printf(bio_err, "\t%-10s\t%s\n", "version:", vers);
if (OSSL_PARAM_modified(params + 2))
BIO_printf(bio_err, "\t%-10s\t%s\n", "build:", build);
}
ret = 1;
end:
OSSL_PROVIDER_unload(prov);
return ret;
}
static int print_mac(BIO *bio, const char *label, const unsigned char *mac,
size_t len)
{
int ret;
char *hexstr = NULL;
hexstr = OPENSSL_buf2hexstr(mac, (long)len);
if (hexstr == NULL)
return 0;
ret = BIO_printf(bio, "%s = %s\n", label, hexstr);
OPENSSL_free(hexstr);
return ret;
}
static int write_config_header(BIO *out, const char *prov_name,
const char *section)
{
return BIO_printf(out, "openssl_conf = openssl_init\n\n")
&& BIO_printf(out, "[openssl_init]\n")
&& BIO_printf(out, "providers = provider_section\n\n")
&& BIO_printf(out, "[provider_section]\n")
&& BIO_printf(out, "%s = %s\n\n", prov_name, section);
}
/*
* Outputs a fips related config file that contains entries for the fips
* module checksum, installation indicator checksum and the options
* conditional_errors and security_checks.
*
* Returns 1 if the config file is written otherwise it returns 0 on error.
*/
static int write_config_fips_section(BIO *out, const char *section,
unsigned char *module_mac,
size_t module_mac_len,
const FIPS_OPTS *opts,
unsigned char *install_mac,
size_t install_mac_len)
{
int ret = 0;
if (BIO_printf(out, "[%s]\n", section) <= 0
|| BIO_printf(out, "activate = 1\n") <= 0
|| BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_INSTALL_VERSION,
VERSION_VAL) <= 0
|| BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_CONDITIONAL_ERRORS,
opts->conditional_errors ? "1" : "0") <= 0
|| BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_SECURITY_CHECKS,
opts->security_checks ? "1" : "0") <= 0
|| BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_TLS1_PRF_EMS_CHECK,
opts->tls_prf_ems_check ? "1" : "0") <= 0
|| BIO_printf(out, "%s = %s\n", OSSL_PROV_PARAM_DRBG_TRUNC_DIGEST,
opts->drgb_no_trunc_dgst ? "1" : "0") <= 0
|| !print_mac(out, OSSL_PROV_FIPS_PARAM_MODULE_MAC, module_mac,
module_mac_len))
goto end;
if (install_mac != NULL && install_mac_len > 0) {
if (!print_mac(out, OSSL_PROV_FIPS_PARAM_INSTALL_MAC, install_mac,
install_mac_len)
|| BIO_printf(out, "%s = %s\n", OSSL_PROV_FIPS_PARAM_INSTALL_STATUS,
INSTALL_STATUS_VAL) <= 0)
goto end;
}
ret = 1;
end:
return ret;
}
static CONF *generate_config_and_load(const char *prov_name,
const char *section,
unsigned char *module_mac,
size_t module_mac_len,
const FIPS_OPTS *opts)
{
BIO *mem_bio = NULL;
CONF *conf = NULL;
mem_bio = BIO_new(BIO_s_mem());
if (mem_bio == NULL)
return 0;
if (!write_config_header(mem_bio, prov_name, section)
|| !write_config_fips_section(mem_bio, section,
module_mac, module_mac_len,
opts, NULL, 0))
goto end;
conf = app_load_config_bio(mem_bio, NULL);
if (conf == NULL)
goto end;
if (CONF_modules_load(conf, NULL, 0) <= 0)
goto end;
BIO_free(mem_bio);
return conf;
end:
NCONF_free(conf);
BIO_free(mem_bio);
return NULL;
}
static void free_config_and_unload(CONF *conf)
{
if (conf != NULL) {
NCONF_free(conf);
CONF_modules_unload(1);
}
}
static int verify_module_load(const char *parent_config_file)
{
return OSSL_LIB_CTX_load_config(NULL, parent_config_file);
}
/*
* Returns 1 if the config file entries match the passed in module_mac and
* install_mac values, otherwise it returns 0.
*/
static int verify_config(const char *infile, const char *section,
unsigned char *module_mac, size_t module_mac_len,
unsigned char *install_mac, size_t install_mac_len)
{
int ret = 0;
char *s = NULL;
unsigned char *buf1 = NULL, *buf2 = NULL;
long len;
CONF *conf = NULL;
/* read in the existing values and check they match the saved values */
conf = app_load_config(infile);
if (conf == NULL)
goto end;
s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_VERSION);
if (s == NULL || strcmp(s, VERSION_VAL) != 0) {
BIO_printf(bio_err, "version not found\n");
goto end;
}
s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_MODULE_MAC);
if (s == NULL) {
BIO_printf(bio_err, "Module integrity MAC not found\n");
goto end;
}
buf1 = OPENSSL_hexstr2buf(s, &len);
if (buf1 == NULL
|| (size_t)len != module_mac_len
|| memcmp(module_mac, buf1, module_mac_len) != 0) {
BIO_printf(bio_err, "Module integrity mismatch\n");
goto end;
}
if (install_mac != NULL && install_mac_len > 0) {
s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_STATUS);
if (s == NULL || strcmp(s, INSTALL_STATUS_VAL) != 0) {
BIO_printf(bio_err, "install status not found\n");
goto end;
}
s = NCONF_get_string(conf, section, OSSL_PROV_FIPS_PARAM_INSTALL_MAC);
if (s == NULL) {
BIO_printf(bio_err, "Install indicator MAC not found\n");
goto end;
}
buf2 = OPENSSL_hexstr2buf(s, &len);
if (buf2 == NULL
|| (size_t)len != install_mac_len
|| memcmp(install_mac, buf2, install_mac_len) != 0) {
BIO_printf(bio_err, "Install indicator status mismatch\n");
goto end;
}
}
ret = 1;
end:
OPENSSL_free(buf1);
OPENSSL_free(buf2);
NCONF_free(conf);
return ret;
}
int fipsinstall_main(int argc, char **argv)
{
int ret = 1, verify = 0, gotkey = 0, gotdigest = 0, pedantic = 0;
const char *section_name = "fips_sect";
const char *mac_name = "HMAC";
const char *prov_name = "fips";
BIO *module_bio = NULL, *mem_bio = NULL, *fout = NULL;
char *in_fname = NULL, *out_fname = NULL, *prog;
char *module_fname = NULL, *parent_config = NULL, *module_path = NULL;
const char *tail;
EVP_MAC_CTX *ctx = NULL, *ctx2 = NULL;
STACK_OF(OPENSSL_STRING) *opts = NULL;
OPTION_CHOICE o;
unsigned char *read_buffer = NULL;
unsigned char module_mac[EVP_MAX_MD_SIZE];
size_t module_mac_len = EVP_MAX_MD_SIZE;
unsigned char install_mac[EVP_MAX_MD_SIZE];
size_t install_mac_len = EVP_MAX_MD_SIZE;
EVP_MAC *mac = NULL;
CONF *conf = NULL;
if ((opts = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
prog = opt_init(argc, argv, fipsinstall_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto cleanup;
case OPT_HELP:
opt_help(fipsinstall_options);
ret = 0;
goto end;
case OPT_IN:
in_fname = opt_arg();
break;
case OPT_OUT:
out_fname = opt_arg();
break;
case OPT_PEDANTIC:
fips_opts = pedantic_opts;
pedantic = 1;
break;
case OPT_NO_CONDITIONAL_ERRORS:
if (!check_non_pedantic_fips(pedantic, "no_conditional_errors"))
goto end;
fips_opts.conditional_errors = 0;
break;
case OPT_NO_SECURITY_CHECKS:
if (!check_non_pedantic_fips(pedantic, "no_security_checks"))
goto end;
fips_opts.security_checks = 0;
break;
case OPT_TLS_PRF_EMS_CHECK:
fips_opts.tls_prf_ems_check = 1;
break;
case OPT_DISALLOW_DRGB_TRUNC_DIGEST:
fips_opts.drgb_no_trunc_dgst = 1;
break;
case OPT_QUIET:
quiet = 1;
/* FALLTHROUGH */
case OPT_NO_LOG:
self_test_log = 0;
break;
case OPT_CORRUPT_DESC:
self_test_corrupt_desc = opt_arg();
break;
case OPT_CORRUPT_TYPE:
self_test_corrupt_type = opt_arg();
break;
case OPT_PROV_NAME:
prov_name = opt_arg();
break;
case OPT_MODULE:
module_fname = opt_arg();
break;
case OPT_SECTION_NAME:
section_name = opt_arg();
break;
case OPT_MAC_NAME:
mac_name = opt_arg();
break;
case OPT_CONFIG:
parent_config = opt_arg();
break;
case OPT_MACOPT:
if (!sk_OPENSSL_STRING_push(opts, opt_arg()))
goto opthelp;
if (HAS_PREFIX(opt_arg(), "hexkey:"))
gotkey = 1;
else if (HAS_PREFIX(opt_arg(), "digest:"))
gotdigest = 1;
break;
case OPT_VERIFY:
verify = 1;
break;
case OPT_SELF_TEST_ONLOAD:
fips_opts.self_test_onload = 1;
break;
case OPT_SELF_TEST_ONINSTALL:
if (!check_non_pedantic_fips(pedantic, "self_test_oninstall"))
goto end;
fips_opts.self_test_onload = 0;
break;
}
}
/* No extra arguments. */
if (!opt_check_rest_arg(NULL))
goto opthelp;
if (verify && in_fname == NULL) {
BIO_printf(bio_err, "Missing -in option for -verify\n");
goto opthelp;
}
if (parent_config != NULL) {
/* Test that a parent config can load the module */
if (verify_module_load(parent_config)) {
ret = OSSL_PROVIDER_available(NULL, prov_name) ? 0 : 1;
if (!quiet) {
BIO_printf(bio_err, "FIPS provider is %s\n",
ret == 0 ? "available" : " not available");
}
}
goto end;
}
if (module_fname == NULL)
goto opthelp;
tail = opt_path_end(module_fname);
if (tail != NULL) {
module_path = OPENSSL_strdup(module_fname);
if (module_path == NULL)
goto end;
module_path[tail - module_fname] = '\0';
if (!OSSL_PROVIDER_set_default_search_path(NULL, module_path))
goto end;
}
if (self_test_log
|| self_test_corrupt_desc != NULL
|| self_test_corrupt_type != NULL)
OSSL_SELF_TEST_set_callback(NULL, self_test_events, NULL);
/* Use the default FIPS HMAC digest and key if not specified. */
if (!gotdigest && !sk_OPENSSL_STRING_push(opts, "digest:SHA256"))
goto end;
if (!gotkey && !sk_OPENSSL_STRING_push(opts, "hexkey:" FIPS_KEY_STRING))
goto end;
module_bio = bio_open_default(module_fname, 'r', FORMAT_BINARY);
if (module_bio == NULL) {
BIO_printf(bio_err, "Failed to open module file\n");
goto end;
}
read_buffer = app_malloc(BUFSIZE, "I/O buffer");
if (read_buffer == NULL)
goto end;
mac = EVP_MAC_fetch(app_get0_libctx(), mac_name, app_get0_propq());
if (mac == NULL) {
BIO_printf(bio_err, "Unable to get MAC of type %s\n", mac_name);
goto end;
}
ctx = EVP_MAC_CTX_new(mac);
if (ctx == NULL) {
BIO_printf(bio_err, "Unable to create MAC CTX for module check\n");
goto end;
}
if (opts != NULL) {
int ok = 1;
OSSL_PARAM *params =
app_params_new_from_opts(opts, EVP_MAC_settable_ctx_params(mac));
if (params == NULL)
goto end;
if (!EVP_MAC_CTX_set_params(ctx, params)) {
BIO_printf(bio_err, "MAC parameter error\n");
ERR_print_errors(bio_err);
ok = 0;
}
app_params_free(params);
if (!ok)
goto end;
}
ctx2 = EVP_MAC_CTX_dup(ctx);
if (ctx2 == NULL) {
BIO_printf(bio_err, "Unable to create MAC CTX for install indicator\n");
goto end;
}
if (!do_mac(ctx, read_buffer, module_bio, module_mac, &module_mac_len))
goto end;
if (fips_opts.self_test_onload == 0) {
mem_bio = BIO_new_mem_buf((const void *)INSTALL_STATUS_VAL,
strlen(INSTALL_STATUS_VAL));
if (mem_bio == NULL) {
BIO_printf(bio_err, "Unable to create memory BIO\n");
goto end;
}
if (!do_mac(ctx2, read_buffer, mem_bio, install_mac, &install_mac_len))
goto end;
} else {
install_mac_len = 0;
}
if (verify) {
if (!verify_config(in_fname, section_name, module_mac, module_mac_len,
install_mac, install_mac_len))
goto end;
if (!quiet)
BIO_printf(bio_err, "VERIFY PASSED\n");
} else {
conf = generate_config_and_load(prov_name, section_name, module_mac,
module_mac_len, &fips_opts);
if (conf == NULL)
goto end;
if (!load_fips_prov_and_run_self_test(prov_name))
goto end;
fout =
out_fname == NULL ? dup_bio_out(FORMAT_TEXT)
: bio_open_default(out_fname, 'w', FORMAT_TEXT);
if (fout == NULL) {
BIO_printf(bio_err, "Failed to open file\n");
goto end;
}
if (!write_config_fips_section(fout, section_name,
module_mac, module_mac_len, &fips_opts,
install_mac, install_mac_len))
goto end;
if (!quiet)
BIO_printf(bio_err, "INSTALL PASSED\n");
}
ret = 0;
end:
if (ret == 1) {
if (!quiet)
BIO_printf(bio_err, "%s FAILED\n", verify ? "VERIFY" : "INSTALL");
ERR_print_errors(bio_err);
}
cleanup:
OPENSSL_free(module_path);
BIO_free(fout);
BIO_free(mem_bio);
BIO_free(module_bio);
sk_OPENSSL_STRING_free(opts);
EVP_MAC_free(mac);
EVP_MAC_CTX_free(ctx2);
EVP_MAC_CTX_free(ctx);
OPENSSL_free(read_buffer);
free_config_and_unload(conf);
return ret;
}
static int self_test_events(const OSSL_PARAM params[], void *arg)
{
const OSSL_PARAM *p = NULL;
const char *phase = NULL, *type = NULL, *desc = NULL;
int ret = 0;
p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_PHASE);
if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
goto err;
phase = (const char *)p->data;
p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_DESC);
if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
goto err;
desc = (const char *)p->data;
p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_TYPE);
if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
goto err;
type = (const char *)p->data;
if (self_test_log) {
if (strcmp(phase, OSSL_SELF_TEST_PHASE_START) == 0)
BIO_printf(bio_err, "%s : (%s) : ", desc, type);
else if (strcmp(phase, OSSL_SELF_TEST_PHASE_PASS) == 0
|| strcmp(phase, OSSL_SELF_TEST_PHASE_FAIL) == 0)
BIO_printf(bio_err, "%s\n", phase);
}
/*
* The self test code will internally corrupt the KAT test result if an
* error is returned during the corrupt phase.
*/
if (strcmp(phase, OSSL_SELF_TEST_PHASE_CORRUPT) == 0
&& (self_test_corrupt_desc != NULL
|| self_test_corrupt_type != NULL)) {
if (self_test_corrupt_desc != NULL
&& strcmp(self_test_corrupt_desc, desc) != 0)
goto end;
if (self_test_corrupt_type != NULL
&& strcmp(self_test_corrupt_type, type) != 0)
goto end;
BIO_printf(bio_err, "%s ", phase);
goto err;
}
end:
ret = 1;
err:
return ret;
}
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