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/*
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* Copyright (C) 2016-2017 Red Hat, Inc.
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*
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* Author: Nikos Mavrogiannopoulos
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*
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* This file is part of GnuTLS.
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*
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* GnuTLS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuTLS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GnuTLS; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/* This program tests functionality in gnutls_dh_params structure */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <gnutls/gnutls.h>
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#include <gnutls/x509.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <assert.h>
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#include "cert-common.h"
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#include "utils.h"
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static int compare(gnutls_datum_t *d1, gnutls_datum_t *d2)
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{
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gnutls_datum_t t1, t2;
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t1.data = d1->data;
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t1.size = d1->size;
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t2.data = d2->data;
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t2.size = d2->size;
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/* skip any differences due to zeros */
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while (t1.data[0] == 0) {
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t1.data++;
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t1.size--;
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}
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while (t2.data[0] == 0) {
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t2.data++;
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t2.size--;
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}
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if (t1.size != t2.size)
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return -1;
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if (memcmp(t1.data, t2.data, t1.size) != 0)
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return -1;
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return 0;
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}
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void doit(void)
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{
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gnutls_dh_params_t dh_params, tmp_params;
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gnutls_x509_privkey_t privkey;
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gnutls_datum_t p1, g1, p2, g2, q;
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unsigned bits = 0;
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int ret;
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/* import DH parameters from DSA key and verify they are the same */
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assert(gnutls_dh_params_init(&dh_params) >= 0);
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assert(gnutls_dh_params_init(&tmp_params) >= 0);
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assert(gnutls_x509_privkey_init(&privkey) >= 0);
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ret = gnutls_x509_privkey_import(privkey, &dsa_key, GNUTLS_X509_FMT_PEM);
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if (ret < 0)
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fail("error in %s: %d\n", __FILE__, __LINE__);
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ret = gnutls_dh_params_import_dsa(tmp_params, privkey);
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if (ret < 0)
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fail("error in %s: %d\n", __FILE__, __LINE__);
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assert(gnutls_dh_params_cpy(dh_params, tmp_params) >= 0);
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gnutls_dh_params_deinit(tmp_params);
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ret = gnutls_dh_params_export_raw(dh_params, &p1, &g1, &bits);
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if (ret < 0)
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fail("error in %s: %d\n", __FILE__, __LINE__);
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ret = gnutls_x509_privkey_export_dsa_raw(privkey, &p2, &q, &g2, NULL, NULL);
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if (ret < 0)
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fail("error in %s: %d\n", __FILE__, __LINE__);
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if (bits > q.size*8 || bits < q.size*8-8)
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fail("error in %s: %d\n", __FILE__, __LINE__);
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if (compare(&p1, &p2) != 0)
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fail("error in %s: %d\n", __FILE__, __LINE__);
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if (compare(&g1, &g2) != 0)
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fail("error in %s: %d\n", __FILE__, __LINE__);
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gnutls_free(p1.data);
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gnutls_free(g1.data);
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gnutls_free(p2.data);
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gnutls_free(g2.data);
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gnutls_free(q.data);
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gnutls_dh_params_deinit(dh_params);
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gnutls_x509_privkey_deinit(privkey);
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success("all ok\n");
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}
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