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/*
* Copyright (C) 2016-2017 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/>.
*/
/* This program tests functionality in gnutls_dh_params structure */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include "cert-common.h"
#include "utils.h"
static int compare(gnutls_datum_t *d1, gnutls_datum_t *d2)
{
gnutls_datum_t t1, t2;
t1.data = d1->data;
t1.size = d1->size;
t2.data = d2->data;
t2.size = d2->size;
/* skip any differences due to zeros */
while (t1.data[0] == 0) {
t1.data++;
t1.size--;
}
while (t2.data[0] == 0) {
t2.data++;
t2.size--;
}
if (t1.size != t2.size)
return -1;
if (memcmp(t1.data, t2.data, t1.size) != 0)
return -1;
return 0;
}
void doit(void)
{
gnutls_dh_params_t dh_params, tmp_params;
gnutls_x509_privkey_t privkey;
gnutls_datum_t p1, g1, p2, g2, q;
unsigned bits = 0;
int ret;
global_init();
/* import DH parameters from DSA key and verify they are the same */
assert(gnutls_dh_params_init(&dh_params) >= 0);
assert(gnutls_dh_params_init(&tmp_params) >= 0);
assert(gnutls_x509_privkey_init(&privkey) >= 0);
ret = gnutls_x509_privkey_import(privkey, &dsa_key,
GNUTLS_X509_FMT_PEM);
if (ret < 0)
fail("error in %s: %d\n", __FILE__, __LINE__);
ret = gnutls_dh_params_import_dsa(tmp_params, privkey);
if (ret < 0)
fail("error in %s: %d\n", __FILE__, __LINE__);
assert(gnutls_dh_params_cpy(dh_params, tmp_params) >= 0);
gnutls_dh_params_deinit(tmp_params);
ret = gnutls_dh_params_export_raw(dh_params, &p1, &g1, &bits);
if (ret < 0)
fail("error in %s: %d\n", __FILE__, __LINE__);
ret = gnutls_x509_privkey_export_dsa_raw(privkey, &p2, &q, &g2, NULL,
NULL);
if (ret < 0)
fail("error in %s: %d\n", __FILE__, __LINE__);
if (bits > q.size * 8 || bits < q.size * 8 - 8)
fail("error in %s: %d\n", __FILE__, __LINE__);
if (compare(&p1, &p2) != 0)
fail("error in %s: %d\n", __FILE__, __LINE__);
if (compare(&g1, &g2) != 0)
fail("error in %s: %d\n", __FILE__, __LINE__);
gnutls_free(p1.data);
gnutls_free(g1.data);
gnutls_free(p2.data);
gnutls_free(g2.data);
gnutls_free(q.data);
gnutls_dh_params_deinit(dh_params);
gnutls_x509_privkey_deinit(privkey);
success("all ok\n");
gnutls_global_deinit();
}
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