1 files changed, 114 insertions, 0 deletions
diff --git a/tests/dh-params.c b/tests/dh-params.c
new file mode 100644
index 0000000..1458c7a
--- /dev/null
+++ b/tests/dh-params.c
@@ -0,0 +1,114 @@
+/*
+ * 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, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+/* 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;
+
+	/* 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");
+}