1
0
mirror of https://github.com/trezor/trezor-firmware.git synced 2024-12-27 00:28:10 +00:00
trezor-firmware/crypto/tests/test_openssl.c
2021-11-01 16:39:53 +01:00

151 lines
4.7 KiB
C

/**
* Copyright (c) 2013-2014 Tomas Dzetkulic
* Copyright (c) 2013-2014 Pavol Rusnak
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/* OpenSSL's SHA256_CTX/SHA512_CTX conflicts with our own */
#define SHA256_CTX _openssl_SHA256_CTX
#define SHA512_CTX _openssl_SHA512_CTX
#include <openssl/bn.h>
#include <openssl/ecdsa.h>
#include <openssl/obj_mac.h>
#include <openssl/opensslv.h>
#include <openssl/sha.h>
#undef SHA256_CTX
#undef SHA512_CTX
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "ecdsa.h"
#include "hasher.h"
#include "rand.h"
#include "nist256p1.h"
#include "secp256k1.h"
#include "memzero.h"
void openssl_check(unsigned int iterations, int nid, const ecdsa_curve *curve) {
uint8_t sig[64], pub_key33[33], pub_key65[65], priv_key[32], msg[256],
hash[32];
struct SHA256state_st sha256;
EC_GROUP *ecgroup;
ecgroup = EC_GROUP_new_by_curve_name(nid);
for (unsigned int iter = 0; iter < iterations; iter++) {
// random message len between 1 and 256
int msg_len = (random32() & 0xFF) + 1;
// create random message
random_buffer(msg, msg_len);
// new ECDSA key
EC_KEY *eckey = EC_KEY_new();
EC_KEY_set_group(eckey, ecgroup);
// generate the key
EC_KEY_generate_key(eckey);
// copy key to buffer
const BIGNUM *K = EC_KEY_get0_private_key(eckey);
int bn_off = sizeof(priv_key) - BN_num_bytes(K);
memzero(priv_key, bn_off);
BN_bn2bin(K, priv_key + bn_off);
// use our ECDSA signer to sign the message with the key
if (ecdsa_sign(curve, HASHER_SHA2, priv_key, msg, msg_len, sig, NULL,
NULL) != 0) {
printf("trezor-crypto signing failed\n");
return;
}
// generate public key from private key
if (ecdsa_get_public_key33(curve, priv_key, pub_key33) != 0) {
printf("ecdsa_get_public_key33 failed\n");
return;
}
if (ecdsa_get_public_key65(curve, priv_key, pub_key65) != 0) {
printf("ecdsa_get_public_key65 failed\n");
return;
}
// use our ECDSA verifier to verify the message signature
if (ecdsa_verify(curve, HASHER_SHA2, pub_key65, sig, msg, msg_len) != 0) {
printf("trezor-crypto verification failed (pub_key_len = 65)\n");
return;
}
if (ecdsa_verify(curve, HASHER_SHA2, pub_key33, sig, msg, msg_len) != 0) {
printf("trezor-crypto verification failed (pub_key_len = 33)\n");
return;
}
// copy signature to the OpenSSL struct
ECDSA_SIG *signature = ECDSA_SIG_new();
#if OPENSSL_VERSION_NUMBER < 0x10100000L
BN_bin2bn(sig, 32, signature->r);
BN_bin2bn(sig + 32, 32, signature->s);
#else
BIGNUM *R = BN_bin2bn(sig, 32, NULL);
BIGNUM *S = BN_bin2bn(sig + 32, 32, NULL);
ECDSA_SIG_set0(signature, R, S);
#endif
// compute the digest of the message
// note: these are OpenSSL functions, not our own
SHA256_Init(&sha256);
SHA256_Update(&sha256, msg, msg_len);
SHA256_Final(hash, &sha256);
// verify all went well, i.e. we can decrypt our signature with OpenSSL
int v = ECDSA_do_verify(hash, 32, signature, eckey);
if (v != 1) {
printf("OpenSSL verification failed (%d)\n", v);
return;
}
ECDSA_SIG_free(signature);
EC_KEY_free(eckey);
if (((iter + 1) % 100) == 0) printf("Passed ... %d\n", iter + 1);
}
EC_GROUP_free(ecgroup);
printf("All OK\n");
}
int main(int argc, char *argv[]) {
if (argc != 2) {
printf("Usage: test_openssl iterations\n");
return 1;
}
unsigned int iterations;
sscanf(argv[1], "%u", &iterations);
printf("Testing secp256k1:\n");
openssl_check(iterations, NID_secp256k1, &secp256k1);
printf("Testing nist256p1:\n");
openssl_check(iterations, NID_X9_62_prime256v1, &nist256p1);
return 0;
}