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/*
* Copyright (C) 2017 Red Hat, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* GnuTLS is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuTLS is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GnuTLS. If not, see <https://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
#include <gnutls/abstract.h>
#include <assert.h>
#include "utils.h"
#include "cert-common.h"
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "|<%d>| %s", level, str);
}
const gnutls_datum_t raw_data = { (void *)"hello there", 11 };
static int sign_verify_data(gnutls_x509_privkey_t pkey,
gnutls_sign_algorithm_t algo, unsigned vflags)
{
int ret;
gnutls_privkey_t privkey;
gnutls_pubkey_t pubkey = NULL;
gnutls_datum_t signature;
gnutls_pk_algorithm_t pk;
gnutls_digest_algorithm_t dig;
unsigned sflags = 0;
/* sign arbitrary data */
assert(gnutls_privkey_init(&privkey) >= 0);
pk = gnutls_sign_get_pk_algorithm(algo);
dig = gnutls_sign_get_hash_algorithm(algo);
if (pk == GNUTLS_PK_RSA_PSS)
sflags |= GNUTLS_PRIVKEY_SIGN_FLAG_RSA_PSS;
ret = gnutls_privkey_import_x509(privkey, pkey, 0);
if (ret < 0)
fail("gnutls_pubkey_import_x509\n");
ret = gnutls_privkey_sign_data(privkey, dig, sflags, &raw_data,
&signature);
if (ret < 0) {
ret = -1;
goto cleanup;
}
/* verify data */
assert(gnutls_pubkey_init(&pubkey) >= 0);
ret = gnutls_pubkey_import_privkey(pubkey, privkey, 0, 0);
if (ret < 0)
fail("gnutls_pubkey_import_privkey\n");
ret = gnutls_pubkey_verify_data2(pubkey, algo, vflags, &raw_data,
&signature);
if (ret < 0) {
ret = -1;
goto cleanup;
}
ret = 0;
cleanup:
if (pubkey)
gnutls_pubkey_deinit(pubkey);
gnutls_privkey_deinit(privkey);
gnutls_free(signature.data);
return ret;
}
void doit(void)
{
gnutls_x509_privkey_t pkey;
int ret;
ret = global_init();
if (ret < 0)
fail("global_init: %d\n", ret);
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(4711);
ret = gnutls_x509_privkey_init(&pkey);
if (ret < 0) {
fail("gnutls_x509_privkey_init: %d\n", ret);
}
ret = gnutls_x509_privkey_import(pkey, &key_dat, GNUTLS_X509_FMT_PEM);
if (ret < 0) {
fail("gnutls_privkey_generate: %s\n", gnutls_strerror(ret));
}
if (sign_verify_data(pkey, GNUTLS_SIGN_RSA_SHA1, 0) < 0)
fail("failed verification with SHA1!\n");
if (sign_verify_data(pkey, GNUTLS_SIGN_RSA_MD5, 0) >= 0)
fail("succeeded verification with MD5!\n");
if (!gnutls_fips140_mode_enabled()) {
if (sign_verify_data(pkey, GNUTLS_SIGN_RSA_MD5,
GNUTLS_VERIFY_ALLOW_SIGN_RSA_MD5) < 0)
fail("failed verification with MD5 and override flags!\n");
if (sign_verify_data(pkey, GNUTLS_SIGN_RSA_MD5,
GNUTLS_VERIFY_ALLOW_BROKEN) < 0)
fail("failed verification with MD5 and override flags2!\n");
}
if (sign_verify_data(pkey, GNUTLS_SIGN_RSA_SHA256, 0) < 0)
fail("failed verification with SHA256!\n");
if (sign_verify_data(pkey, GNUTLS_SIGN_RSA_SHA512, 0) < 0)
fail("failed verification with SHA512!\n");
if (sign_verify_data(pkey, GNUTLS_SIGN_RSA_SHA3_256, 0) < 0)
fail("failed verification with SHA3-256!\n");
if (sign_verify_data(pkey, GNUTLS_SIGN_RSA_PSS_RSAE_SHA256, 0) < 0)
fail("failed verification with SHA256 with PSS!\n");
gnutls_x509_privkey_deinit(pkey);
gnutls_global_deinit();
}
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