tests-relic.c
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/*
* Copyright (C) 2014 Tobias Markmann <tm@ayena.de>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
#define TEST_RELIC_SHOW_OUTPUT (0) /**< set if encoded/decoded string is displayed */
#if (TEST_RELIC_SHOW_OUTPUT == 1)
#include <stdio.h>
#endif
#include <assert.h>
#include <stdlib.h>
#include "relic.h"
#include "embUnit.h"
void print_mem(void *mem, int len) {
int i;
unsigned char *p = (unsigned char *)mem;
for (i=0;i<len;i++) {
printf("0x%02x ", p[i]);
}
printf("\n");
}
static void setUp(void)
{
/* Initialize RELIC */
TEST_ASSERT_EQUAL_INT(STS_OK, core_init());
}
static void tearDown(void)
{
/* Finalize RELIC */
core_clean();
}
static void tests_relic_ecdh(void)
{
/* The following is an example for doing an elliptic-curve Diffie-Hellman
key exchange.
*/
/* Select an elliptic curve configuration */
if (ec_param_set_any() == STS_OK) {
#if (TEST_RELIC_SHOW_OUTPUT == 1)
ec_param_print();
#endif
bn_t privateA;
ec_t publicA;
uint8_t sharedKeyA[MD_LEN];
bn_t privateB;
ec_t publicB;
uint8_t sharedKeyB[MD_LEN];
bn_null(privateA);
ec_null(publicA);
bn_new(privateA);
ec_new(publicA);
bn_null(privateB);
ec_null(publicB);
bn_new(privateB);
ec_new(publicB);
/* User A generates private/public key pair */
TEST_ASSERT_EQUAL_INT(STS_OK, cp_ecdh_gen(privateA, publicA));
#if (TEST_RELIC_SHOW_OUTPUT == 1)
printf("User A\n");
printf("======\n");
printf("private key: ");
bn_print(privateA);
printf("\npublic key: ");
ec_print(publicA);
printf("\n");
#endif
/* User B generates private/public key pair */
TEST_ASSERT_EQUAL_INT(STS_OK, cp_ecdh_gen(privateB, publicB));
#if (TEST_RELIC_SHOW_OUTPUT == 1)
printf("User B\n");
printf("======\n");
printf("private key: ");
bn_print(privateB);
printf("\npublic key: ");
ec_print(publicB);
printf("\n");
#endif
/* In a protocol you would exchange the public keys now */
/* User A calculates shared secret */
TEST_ASSERT_EQUAL_INT(STS_OK, cp_ecdh_key(sharedKeyA, MD_LEN, privateA, publicB));
#if (TEST_RELIC_SHOW_OUTPUT == 1)
printf("\nshared key computed by user A: ");
print_mem(sharedKeyA, MD_LEN);
#endif
/* User B calculates shared secret */
TEST_ASSERT_EQUAL_INT(STS_OK, cp_ecdh_key(sharedKeyB, MD_LEN, privateB, publicA));
#if (TEST_RELIC_SHOW_OUTPUT == 1)
printf("\nshared key computed by user B: ");
print_mem(sharedKeyB, MD_LEN);
#endif
/* The secrets should be the same now */
TEST_ASSERT_EQUAL_INT(CMP_EQ, util_cmp_const(sharedKeyA, sharedKeyB, MD_LEN));
bn_free(privateA);
ec_free(publicA);
bn_free(privateB);
ec_free(publicB);
#if (TEST_RELIC_SHOW_OUTPUT == 1)
printf("\nRELIC EC-DH test successful\n");
#endif
}
}
TestRef tests_relic_all(void)
{
EMB_UNIT_TESTFIXTURES(fixtures) {
new_TestFixture(tests_relic_ecdh)
};
EMB_UNIT_TESTCALLER(RELICTest, setUp, tearDown, fixtures);
return (TestRef)&RELICTest;
}
void tests_relic(void)
{
TESTS_RUN(tests_relic_all());
}