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ec_self_tests_core.c
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/*
* Copyright (C) 2017 - This file is part of libecc project
*
* Authors:
* Ryad BENADJILA <ryadbenadjila@gmail.com>
* Arnaud EBALARD <arnaud.ebalard@ssi.gouv.fr>
* Jean-Pierre FLORI <jean-pierre.flori@ssi.gouv.fr>
*
* Contributors:
* Nicolas VIVET <nicolas.vivet@ssi.gouv.fr>
* Karim KHALFALLAH <karim.khalfallah@ssi.gouv.fr>
*
* This software is licensed under a dual BSD and GPL v2 license.
* See LICENSE file at the root folder of the project.
*/
#include "ec_self_tests_core.h"
#include "../utils/utils.h"
#include "../external_deps/rand.h"
#include "../external_deps/time.h"
#include "../external_deps/print.h"
static int ec_gen_import_export_kp(ec_key_pair *kp, const ec_params *params,
const ec_test_case *c)
{
u8 pub_key_buf[EC_STRUCTURED_PUB_KEY_MAX_EXPORT_SIZE];
u8 priv_key_buf[EC_STRUCTURED_PRIV_KEY_MAX_EXPORT_SIZE];
u8 pub_key_buf_len, priv_key_buf_len;
ec_key_pair imported_kp;
int ret;
/* Generate key pair */
ret = ec_key_pair_gen(kp, params, c->sig_type);
if (ret) {
ext_printf("Error generating key pair\n");
goto err;
}
pub_key_buf_len = EC_STRUCTURED_PUB_KEY_EXPORT_SIZE(&(kp->pub_key));
priv_key_buf_len = EC_STRUCTURED_PRIV_KEY_EXPORT_SIZE(&(kp->priv_key));
/* Export public and private keys in buffers */
ret = ec_structured_pub_key_export_to_buf(&(kp->pub_key), pub_key_buf,
pub_key_buf_len);
if (ret) {
ext_printf("Error exporting public key\n");
goto err;
}
ret = ec_structured_priv_key_export_to_buf(&(kp->priv_key),
priv_key_buf,
priv_key_buf_len);
if (ret) {
ext_printf("Error exporting private key\n");
goto err;
}
/* Import public and private key */
ret = ec_structured_pub_key_import_from_buf(&(imported_kp.pub_key),
params,
pub_key_buf,
pub_key_buf_len,
c->sig_type);
if (ret) {
ext_printf("Error importing public key\n");
goto err;
}
ret = ec_structured_priv_key_import_from_buf(&(imported_kp.priv_key),
params, priv_key_buf,
priv_key_buf_len,
c->sig_type);
if (ret) {
ext_printf("Error importing private key\n");
goto err;
}
ret = 0;
err:
return ret;
}
/* This function randomly splits the message input in small chunks to
* test the signature init / multiple updates / finalize mechanism for
* algorithms that support them.
*/
static int random_split_ec_sign(u8 *sig, u8 siglen, const ec_key_pair *key_pair,
const u8 *m, u32 mlen,
int (*rand) (nn_t out, nn_src_t q),
ec_sig_alg_type sig_type, hash_alg_type hash_type, const u8 *adata, u16 adata_len)
{
struct ec_sign_context ctx;
int ret;
ret = _ec_sign_init(&ctx, key_pair, rand, sig_type, hash_type, adata, adata_len);
if (ret) {
goto err;
}
/* We randomly split the input message in chunks and proceed with updates */
u32 consumed = 0;
while(consumed < mlen){
u32 toconsume = 0;
ret = get_random((u8 *)&toconsume, sizeof(toconsume));
if (ret) {
ext_printf("Error when getting random\n");
goto err;
}
toconsume = (toconsume % (mlen - consumed));
if(((mlen - consumed) == 1) && (toconsume == 0)){
toconsume = 1;
}
ret = ec_sign_update(&ctx, &m[consumed], toconsume);
if (ret) {
goto err;
}
consumed += toconsume;
}
ret = ec_sign_finalize(&ctx, sig, siglen);
err:
return ret;
}
/* This function randomly splits the message input in small chunks to
* test the verification init / multiple updates / finalize mechanism for
* algorithms that support them.
*/
static int random_split_ec_verify(const u8 *sig, u8 siglen, const ec_pub_key *pub_key,
const u8 *m, u32 mlen,
ec_sig_alg_type sig_type, hash_alg_type hash_type, const u8 *adata, u16 adata_len)
{
int ret;
struct ec_verify_context ctx;
ret = ec_verify_init(&ctx, pub_key, sig, siglen, sig_type, hash_type, adata, adata_len);
if (ret) {
goto err;
}
/* We randomly split the input message in chunks and proceed with updates */
u32 consumed = 0;
while(consumed < mlen){
u32 toconsume = 0;
ret = get_random((u8 *)&toconsume, sizeof(toconsume));
if (ret) {
ext_printf("Error when getting random\n");
goto err;
}
toconsume = (toconsume % (mlen - consumed));
if(((mlen - consumed) == 1) && (toconsume == 0)){
toconsume = 1;
}
ret = ec_verify_update(&ctx, &m[consumed], toconsume);
if (ret) {
goto err;
}
consumed += toconsume;
}
ret = ec_verify_finalize(&ctx);
err:
return ret;
}
/* Reduce pressure on the stack for small targets
* by letting the user override this value.
*/
#ifndef MAX_MSG_LEN
#define MAX_MSG_LEN 8192
#endif
/*
* ECC generic self tests (sign/verify on random values
* with import/export)
*/
static int ec_import_export_test(const ec_test_case *c)
{
ec_key_pair kp;
ec_params params;
int ret;
/* Import EC params from test case */
import_params(¶ms, c->ec_str_p);
/* Generate, import/export a key pair */
ret = ec_gen_import_export_kp(&kp, ¶ms, c);
if (ret) {
ext_printf("Error at key pair generation/import/export\n");
goto err;
}
/* Perform test */
{
u16 msglen;
u8 siglen;
u8 msg[MAX_MSG_LEN];
u8 sig[EC_MAX_SIGLEN];
ret = ec_get_sig_len(¶ms, c->sig_type, c->hash_type,
(u8 *)&siglen);
if (ret) {
ext_printf("Error computing effective sig size\n");
goto err;
}
/* Generate a random message to sign */
ret = get_random((u8 *)&msglen, sizeof(msglen));
if (ret) {
ext_printf("Error when getting random\n");
goto err;
}
msglen = msglen % MAX_MSG_LEN;
ret = get_random(msg, msglen);
if (ret) {
ext_printf("Error when getting random\n");
goto err;
}
ret = _ec_sign(sig, siglen, &kp, msg, msglen,
c->nn_random, c->sig_type, c->hash_type, c->adata, c->adata_len);
if (ret) {
ext_printf("Error when signing\n");
goto err;
}
u8 sig_tmp1[EC_MAX_SIGLEN];
local_memset(sig_tmp1, 0, sizeof(sig_tmp1));
u8 sig_tmp2[EC_MAX_SIGLEN];
local_memset(sig_tmp2, 0, sizeof(sig_tmp2));
/* If the algorithm supports streaming mode, test it against direct mode */
if(is_sign_streaming_mode_supported(c->sig_type)){
if(siglen > sizeof(sig_tmp1)){
ret = -1;
goto err;
}
if(siglen > sizeof(sig_tmp2)){
ret = -1;
goto err;
}
ret = generic_ec_sign(sig_tmp1, siglen, &kp, msg, msglen,
c->nn_random, c->sig_type, c->hash_type, c->adata, c->adata_len);
if(ret){
ext_printf("Error when signing\n");
ret = -1;
goto err;
}
ret = random_split_ec_sign(sig_tmp2, siglen, &kp, msg, msglen,
c->nn_random, c->sig_type, c->hash_type, c->adata, c->adata_len);
if(ret){
ext_printf("Error when signing\n");
ret = -1;
goto err;
}
/* Verify signature equality only in case of deterministic signatures */
if(is_sign_deterministic(c->sig_type)){
if(!are_equal(sig, sig_tmp1, siglen)){
ext_printf("Error when signing: streaming and non streaming modes results differ "\
"for deterministic signature scheme!\n");
ret = -1;
goto err;
}
if(!are_equal(sig, sig_tmp2, siglen)){
ext_printf("Error when signing: streaming and non streaming modes results differ "\
"for deterministic signature scheme!\n");
ret = -1;
goto err;
}
}
}
ret = ec_verify(sig, siglen, &(kp.pub_key), msg, msglen,
c->sig_type, c->hash_type, c->adata, c->adata_len);
if (ret) {
ext_printf("Error when verifying signature\n");
goto err;
}
/* If the algorithm supports streaming mode, test it against direct mode */
if(is_verify_streaming_mode_supported(c->sig_type)){
if(is_sign_streaming_mode_supported(c->sig_type)){
ret = generic_ec_verify(sig_tmp2, siglen, &(kp.pub_key), msg, msglen,
c->sig_type, c->hash_type, c->adata, c->adata_len);
}
else{
ret = generic_ec_verify(sig, siglen, &(kp.pub_key), msg, msglen,
c->sig_type, c->hash_type, c->adata, c->adata_len);
}
if (ret) {
ext_printf("Error when verifying signature generic_ec_verify\n");
goto err;
}
if(is_sign_streaming_mode_supported(c->sig_type)){
ret = random_split_ec_verify(sig_tmp1, siglen, &(kp.pub_key), msg, msglen,
c->sig_type, c->hash_type, c->adata, c->adata_len);
}
else{
ret = random_split_ec_verify(sig, siglen, &(kp.pub_key), msg, msglen,
c->sig_type, c->hash_type, c->adata, c->adata_len);
}
if (ret) {
ext_printf("Error when verifying signature random_split_ec_verify\n");
goto err;
}
}
#ifdef USE_CRYPTOFUZZ
u8 check = 0;
/* Specific case where we have access to raw signature API */
#if defined(WITH_SIG_ECDSA)
if(c->sig_type == ECDSA){
check = 1;
}
#endif
#if defined(WITH_SIG_ECGDSA)
if(c->sig_type == ECGDSA){
check = 1;
}
#endif
#if defined(WITH_SIG_ECRDSA)
if(c->sig_type == ECRDSA){
check = 1;
}
#endif
if(check){
struct ec_sign_context sig_ctx;
struct ec_verify_context verif_ctx;
u8 digest[MAX_DIGEST_SIZE] = { 0 };
u8 digestlen;
/* Initialize our signature context */
if(ec_sign_init(&sig_ctx, &kp, c->sig_type, c->hash_type, c->adata, c->adata_len)){
ret = -1;
goto err;
}
/* Perform the hash of the data ourselves */
if(hash_mapping_callbacks_sanity_check(sig_ctx.h)){
ret = -1;
goto err;
}
const u8 *input[2] = { (const u8*)msg , NULL};
u32 ilens[2] = { msglen , 0 };
sig_ctx.h->hfunc_scattered(input, ilens, digest);
digestlen = sig_ctx.h->digest_size;
MUST_HAVE(digestlen <= sizeof(digest));
/* Raw signing of data */
#if defined(WITH_SIG_ECDSA)
if(c->sig_type == ECDSA){
if(ecdsa_sign_raw(&sig_ctx, digest, digestlen, sig, siglen, NULL, 0)){
ret = -1;
goto err;
}
}
#endif
#if defined(WITH_SIG_ECGDSA)
if(c->sig_type == ECGDSA){
if(ecgdsa_sign_raw(&sig_ctx, digest, digestlen, sig, siglen, NULL, 0)){
ret = -1;
goto err;
}
}
#endif
#if defined(WITH_SIG_ECRDSA)
if(c->sig_type == ECRDSA){
if(ecrdsa_sign_raw(&sig_ctx, digest, digestlen, sig, siglen, NULL, 0)){
ret = -1;
goto err;
}
}
#endif
/* Now verify signature */
if(ec_verify_init(&verif_ctx, &(kp.pub_key), sig, siglen, c->sig_type, c->hash_type, c->adata, c->adata_len)){
ret = -1;
goto err;
}
#if defined(WITH_SIG_ECDSA)
if(c->sig_type == ECDSA){
if(ecdsa_verify_raw(&verif_ctx, digest, digestlen)){
ret = -1;
goto err;
}
}
#endif
#if defined(WITH_SIG_ECGDSA)
if(c->sig_type == ECGDSA){
if(ecgdsa_verify_raw(&verif_ctx, digest, digestlen)){
ret = -1;
goto err;
}
}
#endif
#if defined(WITH_SIG_ECRDSA)
if(c->sig_type == ECRDSA){
if(ecrdsa_verify_raw(&verif_ctx, digest, digestlen)){
ret = -1;
goto err;
}
}
#endif
}
#endif
}
ret = 0;
err:
return ret;
}
/*
* Those functions respectively perform signature and verification tests
* based the content of a given test case.
*/
static int ec_test_sign(u8 *sig, u8 siglen, ec_key_pair *kp,
const ec_test_case *c)
{
/* If the algorithm supports streaming, we check that both the streaming and
* non streaming modes produce the same result.
*/
int ret = -1;
ret = _ec_sign(sig, siglen, kp, (const u8 *)(c->msg), c->msglen,
c->nn_random, c->sig_type, c->hash_type, c->adata, c->adata_len);
if(ret){
ret = -1;
goto err;
}
if(is_sign_streaming_mode_supported(c->sig_type)){
u8 sig_tmp[EC_MAX_SIGLEN];
if(siglen > sizeof(sig_tmp)){
ret = -1;
goto err;
}
ret = generic_ec_sign(sig_tmp, siglen, kp, (const u8 *)(c->msg), c->msglen,
c->nn_random, c->sig_type, c->hash_type, c->adata, c->adata_len);
if(ret){
ret = -1;
goto err;
}
if(!are_equal(sig, sig_tmp, siglen)){
ret = -1;
goto err;
}
/* Now test the random split version */
ret = random_split_ec_sign(sig_tmp, siglen, kp, (const u8 *)(c->msg), c->msglen,
c->nn_random, c->sig_type, c->hash_type, c->adata, c->adata_len);
if(ret){
ret = -1;
goto err;
}
if(!are_equal(sig, sig_tmp, siglen)){
ret = -1;
goto err;
}
}
ret = 0;
err:
return ret;
}
static int ec_test_verify(u8 *sig, u8 siglen, const ec_pub_key *pub_key,
const ec_test_case *c)
{
/* If the algorithm supports streaming, we check that both the streaming and
* non streaming modes produce the same result.
*/
int ret = -1;
ret = ec_verify(sig, siglen, pub_key, (const u8 *)(c->msg), c->msglen,
c->sig_type, c->hash_type, c->adata, c->adata_len);
if(ret){
ret = -1;
goto err;
}
if(is_verify_streaming_mode_supported(c->sig_type)){
ret = generic_ec_verify(sig, siglen, pub_key, (const u8 *)(c->msg), c->msglen,
c->sig_type, c->hash_type, c->adata, c->adata_len);
if(ret){
ret = -1;
goto err;
}
/* Now test the random split version */
ret = random_split_ec_verify(sig, siglen, pub_key, (const u8 *)(c->msg), c->msglen,
c->sig_type, c->hash_type, c->adata, c->adata_len);
if(ret){
ret = -1;
goto err;
}
}
ret = 0;
err:
return ret;
}
/*
* ECC generic self tests (sign/verify on known test vectors). Returns
* 0 if given test succeeded, or a non-zero value otherwise. In that
* case, the value encodes the information on what went wrong as
* described above.
*/
static int ec_sig_known_vector_tests_one(const ec_test_case *c)
{
test_err_kind failed_test = TEST_KEY_IMPORT_ERROR;
u8 sig[EC_MAX_SIGLEN];
ec_params params;
ec_key_pair kp;
u8 siglen;
int ret;
MUST_HAVE(c != NULL);
import_params(¶ms, c->ec_str_p);
#if defined(WITH_SIG_EDDSA25519) || defined(WITH_SIG_EDDSA448)
/* In the specific case of EdDSA, we perform a specific key derivation */
#if defined(WITH_SIG_EDDSA25519) && defined(WITH_SIG_EDDSA448)
if((c->sig_type == EDDSA25519) || (c->sig_type == EDDSA25519CTX) || (c->sig_type == EDDSA25519PH) || \
(c->sig_type == EDDSA448) || (c->sig_type == EDDSA448PH)){
#endif
#if defined(WITH_SIG_EDDSA25519) && !defined(WITH_SIG_EDDSA448)
if((c->sig_type == EDDSA25519) || (c->sig_type == EDDSA25519CTX) || (c->sig_type == EDDSA25519PH)){
#endif
#if !defined(WITH_SIG_EDDSA25519) && defined(WITH_SIG_EDDSA448)
if((c->sig_type == EDDSA448) || (c->sig_type == EDDSA448PH)){
#endif
/* Import the key pair using the EdDSA dedicated function */
if(eddsa_import_key_pair_from_priv_key_buf(&kp, c->priv_key, c->priv_key_len, ¶ms, c->sig_type)){
ret = -1;
failed_test = TEST_KEY_IMPORT_ERROR;
goto err;
}
}
else
#endif /* !(defined(WITH_SIG_EDDSA25519) || defined(WITH_SIG_EDDSA448)) */
{
/* Regular import if not EdDSA */
ret = ec_key_pair_import_from_priv_key_buf(&kp, ¶ms, c->priv_key,
c->priv_key_len,
c->sig_type);
if (ret) {
failed_test = TEST_KEY_IMPORT_ERROR;
goto err;
}
}
siglen = c->exp_siglen;
ret = ec_test_sign(sig, siglen, &kp, c);
if (ret) {
failed_test = TEST_SIG_ERROR;
goto err;
}
ret = are_equal(sig, c->exp_sig, siglen);
if (!ret) {
ret = -1;
failed_test = TEST_SIG_COMP_ERROR;
goto err;
}
ret = ec_test_verify(sig, siglen, &(kp.pub_key), c);
if (ret) {
failed_test = TEST_VERIF_ERROR;
goto err;
}
#ifdef USE_CRYPTOFUZZ
u8 check = 0;
/* Specific case where we have access to raw signature API */
#if defined(WITH_SIG_ECDSA)
if(c->sig_type == ECDSA){
check = 1;
}
#endif
#if defined(WITH_SIG_ECGDSA)
if(c->sig_type == ECGDSA){
check = 1;
}
#endif
#if defined(WITH_SIG_ECRDSA)
if(c->sig_type == ECRDSA){
check = 1;
}
#endif
/* Specific case where we have access to raw signature API */
if(check){
struct ec_sign_context sig_ctx;
struct ec_verify_context verif_ctx;
u8 digest[MAX_DIGEST_SIZE] = { 0 };
u8 digestlen;
/* Initialize our signature context */
if(ec_sign_init(&sig_ctx, &kp, c->sig_type, c->hash_type, c->adata, c->adata_len)){
ret = -1;
failed_test = TEST_SIG_ERROR;
goto err;
}
/* Perform the hash of the data ourselves */
if(hash_mapping_callbacks_sanity_check(sig_ctx.h)){
ret = -1;
failed_test = TEST_SIG_ERROR;
goto err;
}
const u8 *input[2] = { (const u8*)(c->msg) , NULL};
u32 ilens[2] = { c->msglen , 0 };
sig_ctx.h->hfunc_scattered(input, ilens, digest);
digestlen = sig_ctx.h->digest_size;
MUST_HAVE(digestlen <= sizeof(digest));
/* Import the fixed nonce */
u8 nonce[BIT_LEN_WORDS(NN_MAX_BIT_LEN) * (WORDSIZE / 8)] = { 0 };
nn n_nonce;
bitcnt_t q_bit_len = kp.priv_key.params->ec_gen_order_bitlen;
if(c->nn_random(&n_nonce, &(kp.priv_key.params->ec_gen_order))){
ret = -1;
failed_test = TEST_SIG_ERROR;
goto err;
}
nn_export_to_buf(nonce, BYTECEIL(q_bit_len), &n_nonce);
if((unsigned int)BYTECEIL(q_bit_len) > sizeof(nonce)){
ret = -1;
failed_test = TEST_SIG_ERROR;
goto err;
}
u8 noncelen = (u8)(BYTECEIL(q_bit_len));
MUST_HAVE(noncelen <= sizeof(nonce));
/* Raw signing of data */
#if defined(WITH_SIG_ECDSA)
if(c->sig_type == ECDSA){
if(ecdsa_sign_raw(&sig_ctx, digest, digestlen, sig, siglen, nonce, noncelen)){
ret = -1;
failed_test = TEST_SIG_ERROR;
goto err;
}
}
#endif
#if defined(WITH_SIG_ECGDSA)
if(c->sig_type == ECGDSA){
if(ecgdsa_sign_raw(&sig_ctx, digest, digestlen, sig, siglen, nonce, noncelen)){
ret = -1;
failed_test = TEST_SIG_ERROR;
goto err;
}
}
#endif
#if defined(WITH_SIG_ECRDSA)
if(c->sig_type == ECRDSA){
if(ecrdsa_sign_raw(&sig_ctx, digest, digestlen, sig, siglen, nonce, noncelen)){
ret = -1;
failed_test = TEST_SIG_ERROR;
goto err;
}
}
#endif
/* Check computed signature against expected one */
ret = are_equal(sig, c->exp_sig, siglen);
if (!ret) {
failed_test = TEST_SIG_COMP_ERROR;
ret = -1;
goto err;
}
/* Now verify signature */
if(ec_verify_init(&verif_ctx, &(kp.pub_key), sig, siglen, c->sig_type, c->hash_type, c->adata, c->adata_len)){
ret = -1;
failed_test = TEST_VERIF_ERROR;
goto err;
}
/* Raw verification of data */
#if defined(WITH_SIG_ECDSA)
if(c->sig_type == ECDSA){
if(ecdsa_verify_raw(&verif_ctx, digest, digestlen)){
ret = -1;
failed_test = TEST_VERIF_ERROR;
goto err;
}
}
#endif
#if defined(WITH_SIG_ECGDSA)
if(c->sig_type == ECGDSA){
if(ecgdsa_verify_raw(&verif_ctx, digest, digestlen)){
ret = -1;
failed_test = TEST_VERIF_ERROR;
goto err;
}
}
#endif
#if defined(WITH_SIG_ECRDSA)
if(c->sig_type == ECRDSA){
if(ecrdsa_verify_raw(&verif_ctx, digest, digestlen)){
ret = -1;
failed_test = TEST_VERIF_ERROR;
goto err;
}
}
#endif
}
#endif
ret = 0;
err:
if (ret) {
ret = (int)encode_error_value(c, failed_test);
}
return ret;
}
int perform_known_test_vectors_test(const char *sig, const char *hash, const char *curve)
{
const ec_test_case *cur_test;
unsigned int i;
int ret = 0;
ext_printf("======= Known test vectors test =================\n");
for (i = 0; i < EC_FIXED_VECTOR_NUM_TESTS; i++) {
cur_test = ec_fixed_vector_tests[i];
if(cur_test == NULL){
continue;
}
/* If this is a dummy test case, skip it! */
if(cur_test->sig_type == UNKNOWN_SIG_ALG){
continue;
}
/* Filter out */
if(sig != NULL){
const ec_sig_mapping *sig_map = get_sig_by_type(cur_test->sig_type);
if(sig_map == NULL){
continue;
}
if(!are_str_equal(sig_map->name, sig)){
continue;
}
}
if(hash != NULL){
const hash_mapping *hash_map = get_hash_by_type(cur_test->hash_type);
if(hash_map == NULL){
continue;
}
if(!are_str_equal(hash_map->name, hash)){
continue;
}
}
if(curve != NULL){
if(cur_test->ec_str_p == NULL){
continue;
}
if(!are_str_equal((const char*)cur_test->ec_str_p->name->buf, curve)){
continue;
}
}
ret = ec_sig_known_vector_tests_one(cur_test);
ext_printf("[%s] %30s selftests: known test vectors "
"sig/verif %s\n", ret ? "-" : "+",
cur_test->name, ret ? "failed" : "ok");
#ifdef USE_CRYPTOFUZZ
#if defined(WITH_SIG_ECDSA)
if(cur_test->sig_type == ECDSA){
ext_printf("\t(RAW ECDSA for CRYPTOFUZZ also checked!)\n");
}
#endif
#if defined(WITH_SIG_ECGDSA)
if(cur_test->sig_type == ECGDSA){
ext_printf("\t(RAW ECGDSA for CRYPTOFUZZ also checked!)\n");
}
#endif
#if defined(WITH_SIG_ECRDSA)
if(cur_test->sig_type == ECRDSA){
ext_printf("\t(RAW ECRDSA for CRYPTOFUZZ also checked!)\n");
}
#endif
#endif
if (ret) {
goto err;
}
}
err:
return ret;
}
static int rand_sig_verif_test_one(const ec_sig_mapping *sig,
const hash_mapping *hash,
const ec_mapping *ec)
{
char test_name[MAX_CURVE_NAME_LEN + MAX_HASH_ALG_NAME_LEN +
MAX_SIG_ALG_NAME_LEN + 2];
const unsigned int tn_size = sizeof(test_name) - 1; /* w/o trailing 0 */
const char *crv_name = (const char *)PARAM_BUF_PTR((ec->params)->name);
ec_test_case t;
int ret;
/* Generate the test name */
local_memset(test_name, 0, tn_size + 1);
local_strncpy(test_name, sig->name, tn_size);
local_strncat(test_name, "-", tn_size - local_strlen(test_name));
local_strncat(test_name, hash->name, tn_size - local_strlen(test_name));
local_strncat(test_name, "/", tn_size - local_strlen(test_name));
local_strncat(test_name, crv_name, tn_size - local_strlen(test_name));
/* Create a test */
t.name = test_name;
t.ec_str_p = ec->params;
t.priv_key = NULL;
t.priv_key_len = 0;
t.nn_random = NULL;
t.hash_type = hash->type;
t.msg = NULL;
t.msglen = 0;
t.sig_type = sig->type;
t.exp_sig = NULL;
t.exp_siglen = 0;
#if defined(WITH_SIG_EDDSA25519) || defined(WITH_SIG_SM2)
u8 rand_adata[255] = { 0 };
/* The case of EDDSA25519CTX and SM2 needs a non NULL context (ancillary data).
* Create a random string of size <= 255 for this.
*/
#if defined(WITH_SIG_EDDSA25519) && !defined(WITH_SIG_SM2)
if(sig->type == EDDSA25519CTX)
#endif
#if !defined(WITH_SIG_EDDSA25519) && defined(WITH_SIG_SM2)
if(sig->type == SM2)
#endif
#if defined(WITH_SIG_EDDSA25519) && defined(WITH_SIG_SM2)
if((sig->type == EDDSA25519CTX) || (sig->type == SM2))
#endif
{
u8 rand_len = 0;
if(get_random((u8 *)&rand_len, sizeof(rand_len))){
ret = -1;
return ret;
}
if(get_random((u8 *)rand_adata, rand_len)){
ret = -1;
return ret;
}
t.adata = rand_adata;
t.adata_len = rand_len;
}
else
#endif
{
t.adata = NULL;
t.adata_len = 0;
}
/* Execute the test */
ret = ec_import_export_test(&t);
ext_printf("[%s] %34s randtests: random import/export "
"with sig/verif %s\n", ret ? "-" : "+", t.name,
ret ? "failed" : "ok");
#ifdef USE_CRYPTOFUZZ
#if defined(WITH_SIG_ECDSA)
if(t.sig_type == ECDSA){
ext_printf("\t(RAW ECDSA for CRYPTOFUZZ also checked!)\n");
}
#endif
#if defined(WITH_SIG_ECGDSA)
if(t.sig_type == ECGDSA){
ext_printf("\t(RAW ECGDSA for CRYPTOFUZZ also checked!)\n");
}
#endif
#if defined(WITH_SIG_ECRDSA)
if(t.sig_type == ECRDSA){
ext_printf("\t(RAW ECRDSA for CRYPTOFUZZ also checked!)\n");
}
#endif
#endif
return ret;
}
int perform_random_sig_verif_test(const char *sig, const char *hash, const char *curve)
{
unsigned int i, j, k;
int ret;
/*
* Perform basic sign/verify tests on all the cipher suites
* (combination of sign algo/hash function/curve)
*/
ext_printf("======= Random sig/verif test ===================\n");
for (i = 0; ec_sig_maps[i].type != UNKNOWN_SIG_ALG; i++) {
for (j = 0; hash_maps[j].type != UNKNOWN_HASH_ALG; j++) {
for (k = 0; k < EC_CURVES_NUM; k++) {
if(sig != NULL){
if(!are_str_equal(ec_sig_maps[i].name, sig)){
continue;
}
}
if(hash != NULL){
if(!are_str_equal(hash_maps[j].name, hash)){
continue;
}
}
if(curve != NULL){
if(!are_str_equal((const char*)ec_maps[k].params->name->buf, curve)){
continue;
}
}
/* If we have EDDSA25519 or EDDSA448, we only accept specific hash functions.
* Skip the other tests.
*/
#ifdef WITH_SIG_EDDSA25519
if((ec_sig_maps[i].type == EDDSA25519) && ((hash_maps[j].type != SHA512) || (ec_maps[k].type != WEI25519))){
continue;
}
if((ec_sig_maps[i].type == EDDSA25519CTX) && ((hash_maps[j].type != SHA512) || (ec_maps[k].type != WEI25519))){
continue;
}
if((ec_sig_maps[i].type == EDDSA25519PH) && ((hash_maps[j].type != SHA512) || (ec_maps[k].type != WEI25519))){
continue;
}
#endif
#ifdef WITH_SIG_EDDSA448
if((ec_sig_maps[i].type == EDDSA448) && ((hash_maps[j].type != SHAKE256) || (ec_maps[k].type != WEI448))){
continue;
}
if((ec_sig_maps[i].type == EDDSA448PH) && ((hash_maps[j].type != SHAKE256) || (ec_maps[k].type != WEI448))){
continue;
}
#endif
ret = rand_sig_verif_test_one(&ec_sig_maps[i],
&hash_maps[j],
&ec_maps[k]);
if (ret) {
goto err;
}
}
}
}
return 0;
err:
return -1;
}
#define PERF_NUM_OP 300
/*
* ECC generic performance test: Returns the number of signatures
* and verifications per second
*/
static int ec_performance_test(const ec_test_case *c,
unsigned int *n_perf_sign,
unsigned int *n_perf_verif)
{
ec_key_pair kp;
ec_params params;
int ret;
/* Import EC params from test case */
import_params(¶ms, c->ec_str_p);
/* Generate, import/export a key pair */
ret = ec_gen_import_export_kp(&kp, ¶ms, c);
if (ret) {
ext_printf("Error at key pair generation/import/export\n");
goto err;
}
/* Perform test */
{
u8 sig[EC_MAX_SIGLEN];
u8 siglen;
u8 msg[MAX_BLOCK_SIZE];
u16 msglen;
u8 hash_digest_size, hash_block_size;
/* Time related variables */
u64 time1, time2, cumulated_time_sign, cumulated_time_verify;
int i;
ret = ec_get_sig_len(¶ms, c->sig_type, c->hash_type,
(u8 *)&siglen);
if (ret) {
ext_printf("Error computing effective sig size\n");
goto err;
}
/*
* Random tests to measure performance: We do it on small
* messages to "absorb" the hash function cost
*/
ret = get_hash_sizes(c->hash_type, &hash_digest_size,
&hash_block_size);
if (ret) {
ext_printf("Error when getting hash size\n");
goto err;
}
cumulated_time_sign = cumulated_time_verify = 0;
for (i = 0; i < PERF_NUM_OP; i++) {
/* Generate a random message to sign */
ret = get_random((u8 *)&msglen, sizeof(msglen));
if (ret) {
ext_printf("Error when getting random\n");
goto err;
}
msglen = msglen % hash_block_size;
ret = get_random(msg, msglen);
if (ret) {
ext_printf("Error when getting random\n");
goto err;
}
/***** Signature **********/
ret = get_ms_time(&time1);
if (ret) {