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/* $OpenBSD: dhtest.c,v 1.2 2018/06/08 17:28:36 jsing Exp $ */
/*
* Copyright (c) 2018 Joel Sing <jsing@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <err.h>
#include <stdio.h>
#include <string.h>
#include <csi.h>
struct dh_params_test {
const char *name;
struct csi_dh_params *(*func)(void);
};
struct dh_params_test dh_params_tests[] = {
{
.name = "modp group1",
.func = csi_dh_params_modp_group1,
},
{
.name = "modp group2",
.func = csi_dh_params_modp_group2,
},
{
.name = "modp group5",
.func = csi_dh_params_modp_group5,
},
{
.name = "modp group14",
.func = csi_dh_params_modp_group14,
},
{
.name = "modp group15",
.func = csi_dh_params_modp_group15,
},
{
.name = "modp group16",
.func = csi_dh_params_modp_group16,
},
{
.name = "modp group17",
.func = csi_dh_params_modp_group17,
},
{
.name = "modp group18",
.func = csi_dh_params_modp_group18,
},
};
#define N_DH_PARAMS_TESTS \
(sizeof(dh_params_tests) / sizeof(*dh_params_tests))
static int
dh_params_test(void)
{
struct csi_dh_params *params;
size_t i;
for (i = 0; i < N_DH_PARAMS_TESTS; i++) {
if ((params = dh_params_tests[i].func()) == NULL) {
fprintf(stderr, "FAIL: %s params failed\n",
dh_params_tests[i].name);
return 1;
}
csi_dh_params_free(params);
}
return 0;
}
static int
dh_generate_keys_test(void)
{
return 0;
}
static int
dh_peer_public_test(void)
{
uint8_t data[] = {0x01, 0x00, 0x01};
struct csi_dh_params *params;
struct csi_dh_public public;
struct csi_dh *cdh;
int failed = 1;
if ((cdh = csi_dh_new()) == NULL)
errx(1, "out of memory");
if ((params = csi_dh_params_modp_group1()) == NULL)
errx(1, "out of memory");
if (csi_dh_set_params(cdh, params) == -1) {
fprintf(stderr, "FAIL: failed to set dh params: %s\n",
csi_dh_error(cdh));
goto fail;
}
public.key.data = data;
public.key.len = sizeof(data);
if (csi_dh_set_peer_public(cdh, &public) != -1) {
fprintf(stderr, "FAIL: successfully set public key, "
"should have failed!\n");
goto fail;
}
failed = 0;
fail:
csi_dh_params_free(params);
csi_dh_free(cdh);
return failed;
}
static int
dh_kex_test(void)
{
struct csi_dh_public *client_public = NULL, *server_public = NULL;
struct csi_dh_shared *client_shared = NULL, *server_shared = NULL;
struct csi_dh *client = NULL, *server = NULL;
struct csi_dh_params *params;
int failed = 1;
if ((client = csi_dh_new()) == NULL)
errx(1, "out of memory");
if ((server = csi_dh_new()) == NULL)
errx(1, "out of memory");
params = csi_dh_params_modp_group2();
if (csi_dh_set_params(client, params) == -1) {
fprintf(stderr, "FAIL: failed to set client params: %s\n",
csi_dh_error(client));
goto fail;
}
if (csi_dh_set_params(server, params) == -1) {
fprintf(stderr, "FAIL: failed to set server params: %s\n",
csi_dh_error(server));
goto fail;
}
if (csi_dh_generate_keys(client, 0, &client_public) == -1) {
fprintf(stderr, "FAIL: failed to generate client keys: %s\n",
csi_dh_error(client));
goto fail;
}
if (csi_dh_generate_keys(server, 0, &server_public) == -1) {
fprintf(stderr, "FAIL: failed to generate server keys: %s\n",
csi_dh_error(server));
goto fail;
}
if (csi_dh_set_peer_public(client, server_public) == -1) {
fprintf(stderr, "FAIL: failed to set client peer public: %s\n",
csi_dh_error(client));
goto fail;
}
if (csi_dh_set_peer_public(server, client_public) == -1) {
fprintf(stderr, "FAIL: failed to set server peer public: %s\n",
csi_dh_error(server));
goto fail;
}
if (csi_dh_derive_shared_key(client, &client_shared) == -1) {
fprintf(stderr, "FAIL: failed to derive client shared key: %s\n",
csi_dh_error(client));
goto fail;
}
if (csi_dh_derive_shared_key(server, &server_shared) == -1) {
fprintf(stderr, "FAIL: failed to derive server shared key: %s\n",
csi_dh_error(server));
goto fail;
}
if (client_shared->key.len != server_shared->key.len) {
fprintf(stderr, "FAIL: shared key lengths differ (%zu != %zu)\n",
client_shared->key.len, server_shared->key.len);
goto fail;
}
if (memcmp(client_shared->key.data, server_shared->key.data,
client_shared->key.len) != 0) {
fprintf(stderr, "FAIL: shared keys differ\n");
goto fail;
}
failed = 0;
fail:
csi_dh_params_free(params);
csi_dh_free(client);
csi_dh_free(server);
csi_dh_public_free(client_public);
csi_dh_public_free(server_public);
csi_dh_shared_free(client_shared);
csi_dh_shared_free(server_shared);
return failed;
}
int
main(int argc, char **argv)
{
int failed = 0;
failed |= dh_params_test();
failed |= dh_generate_keys_test();
failed |= dh_peer_public_test();
failed |= dh_kex_test();
return failed;
}
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