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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 "hashes/sha256.h"
#include "uECC.h"
#define TESTROUNDS 16
typedef struct uECC_SHA256_HashContext {
uECC_HashContext uECC;
sha256_context_t ctx;
} uECC_SHA256_HashContext;
static void _init_sha256(const uECC_HashContext *base)
{
uECC_SHA256_HashContext *context = (uECC_SHA256_HashContext*)base;
sha256_init(&context->ctx);
}
static void _update_sha256(const uECC_HashContext *base,
const uint8_t *message,
unsigned message_size)
{
uECC_SHA256_HashContext *context = (uECC_SHA256_HashContext*)base;
sha256_update(&context->ctx, message, message_size);
}
static void _finish_sha256(const uECC_HashContext *base, uint8_t *hash_result)
{
uECC_SHA256_HashContext *context = (uECC_SHA256_HashContext*)base;
sha256_final(&context->ctx, hash_result);
}
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_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];
printf("Testing %d random private key pairs and signature without using HWRNG\n", TESTROUNDS);
/* use pre-generated keys for no-HWRNG platforms */
uint8_t l_private1[] = {
0x9b, 0x4c, 0x4b, 0xa0, 0xb7, 0xb1, 0x25, 0x23,
0x9c, 0x09, 0x85, 0x4f, 0x9a, 0x21, 0xb4, 0x14,
0x70, 0xe0, 0xce, 0x21, 0x25, 0x00, 0xa5, 0x62,
0x34, 0xa4, 0x25, 0xf0, 0x0f, 0x00, 0xeb, 0xe7,
};
uint8_t l_public1[] = {
0x54, 0x3e, 0x98, 0xf8, 0x14, 0x55, 0x08, 0x13,
0xb5, 0x1a, 0x1d, 0x02, 0x02, 0xd7, 0x0e, 0xab,
0xa0, 0x98, 0x74, 0x61, 0x91, 0x12, 0x3d, 0x96,
0x50, 0xfa, 0xd5, 0x94, 0xa2, 0x86, 0xa8, 0xb0,
0xd0, 0x7b, 0xda, 0x36, 0xba, 0x8e, 0xd3, 0x9a,
0xa0, 0x16, 0x11, 0x0e, 0x1b, 0x6e, 0x81, 0x13,
0xd7, 0xf4, 0x23, 0xa1, 0xb2, 0x9b, 0xaf, 0xf6,
0x6b, 0xc4, 0x2a, 0xdf, 0xbd, 0xe4, 0x61, 0x5c,
};
uint8_t l_private2[] = {
0xb5, 0x45, 0xaf, 0xa0, 0x2e, 0x5c, 0xa6, 0x17,
0x3b, 0x5a, 0x55, 0x76, 0x67, 0x5d, 0xd4, 0x5e,
0x41, 0x7c, 0x4f, 0x19, 0x9f, 0xb9, 0x75, 0xdc,
0xba, 0x57, 0xc4, 0xa2, 0x26, 0xc6, 0x86, 0x2a,
};
uint8_t l_public2[] = {
0x2e, 0x81, 0x24, 0x3c, 0x44, 0xac, 0x63, 0x13,
0x9b, 0xc1, 0x27, 0xe9, 0x53, 0x3b, 0x0a, 0xe2,
0xf9, 0x22, 0xcd, 0x06, 0xfd, 0x12, 0x17, 0x2e,
0xe5, 0x0e, 0xb5, 0xce, 0x6b, 0x50, 0xe2, 0x44,
0xbf, 0x6b, 0x3f, 0xe8, 0x4e, 0x70, 0xd1, 0x06,
0x85, 0x84, 0xb8, 0xef, 0xe2, 0x25, 0x91, 0x21,
0xf3, 0x46, 0x70, 0xa9, 0x1c, 0x79, 0x19, 0xe3,
0xfb, 0x11, 0x36, 0x64, 0x37, 0x64, 0x58, 0xc9,
};
uint8_t tmp[2 * SHA256_DIGEST_LENGTH + SHA256_INTERNAL_BLOCK_SIZE];
for (i = 0; i < TESTROUNDS; ++i) {
printf(".");
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);
uECC_SHA256_HashContext ctx;
ctx.uECC.init_hash = &_init_sha256;
ctx.uECC.update_hash = &_update_sha256;
ctx.uECC.finish_hash = &_finish_sha256;
ctx.uECC.block_size = 64;
ctx.uECC.result_size = 32;
ctx.uECC.tmp = tmp;
if (uECC_sign_deterministic(l_private1, l_hash, sizeof(l_hash),
&ctx.uECC, l_sig, curve) != 1) {
printf("\nRound %d: uECC_sign_deterministic() 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;
}
}