main.c
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/*-
* Copyright 2014 Kenneth MacKay
* Copyright 2014 Frank Holtz
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
/**
* @file
* @brief Check if the micro-ecc builds and working
*
* @author Frank Holtz <frank-riot2015@holtznet.de>
*
*/
#include <stdio.h>
#include <string.h>
#include "uECC.h"
#include "periph/hwrng.h"
#define TESTROUNDS 16
int main(void)
{
printf("micro-ecc compiled!\n");
const struct uECC_Curve_t *curve = uECC_secp256r1();
int i, errorc = 0;
int curve_size = uECC_curve_private_key_size(curve);
int public_key_size = uECC_curve_public_key_size(curve);
uint8_t l_private1[curve_size];
uint8_t l_private2[curve_size];
uint8_t l_public1[public_key_size];
uint8_t l_public2[public_key_size];
uint8_t l_secret1[curve_size];
uint8_t l_secret2[curve_size];
/* reserve space for a SHA-256 hash */
uint8_t l_hash[32] = { 0 };
uint8_t l_sig[public_key_size];
/* initialize hardware random number generator */
hwrng_init();
printf("Testing %d random private key pairs and signature\n", TESTROUNDS);
for (i = 0; i < TESTROUNDS; ++i) {
printf(".");
if (!uECC_make_key(l_public1, l_private1, curve) || !uECC_make_key(l_public2, l_private2, curve)) {
printf("\nRound %d: uECC_make_key() failed", i);
errorc++;
}
else {
if (!uECC_shared_secret(l_public2, l_private1, l_secret1, curve)) {
printf("\nRound %d: shared_secret() failed (1)", i);
errorc++;
}
else {
if (!uECC_shared_secret(l_public1, l_private2, l_secret2, curve)) {
printf("\nRound: %d: shared_secret() failed (2)", i);
errorc++;
}
else {
if (memcmp(l_secret1, l_secret2, sizeof(l_secret1)) != 0) {
printf("\nShared secrets are not identical!\n");
errorc++;
}
/* copy some bogus data into the hash */
memcpy(l_hash, l_public1, 32);
if ((uECC_sign(l_private1, l_hash, sizeof(l_hash), l_sig, curve)) != 1) {
printf("\nRound %d: uECC_sign() failed", i);
errorc++;
}
else {
if ((uECC_verify(l_public1, l_hash, sizeof(l_hash), l_sig, curve)) != 1) {
printf("\nRound %d: uECC_verify() failed", i);
errorc++;
}
}
}
}
}
}
printf(" done with %d error(s)\n", errorc);
if (errorc == 0) {
return 0;
}
else {
return 1;
}
}