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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include "crypto/s2n_ecdsa.h"
#include <string.h>
#include "crypto/s2n_ecc_evp.h"
#include "crypto/s2n_fips.h"
#include "s2n_test.h"
#include "stuffer/s2n_stuffer.h"
#include "testlib/s2n_testlib.h"
#include "tls/s2n_config.h"
#include "tls/s2n_connection.h"
#include "utils/s2n_safety.h"
static uint8_t s2n_test_noop_verify_host_fn(const char *host_name, size_t host_name_len, void *data)
{
return true;
}
static uint8_t unmatched_private_key[] =
"-----BEGIN EC PRIVATE KEY-----\n"
"MIIB+gIBAQQwuenHFMJsDm5tCQgthH8kGXQ1dHkKACmHH3ZqIGteoghhGow6vGmr\n"
"xzA8gAdD2bJ0oIIBWzCCAVcCAQEwPAYHKoZIzj0BAQIxAP//////////////////\n"
"///////////////////////+/////wAAAAAAAAAA/////zB7BDD/////////////\n"
"/////////////////////////////v////8AAAAAAAAAAP////wEMLMxL6fiPufk\n"
"mI4Fa+P4LRkYHZxu/oFBEgMUCI9QE4daxlY5jYou0Z0qhcjt0+wq7wMVAKM1kmqj\n"
"GaJ6HQCJamdzpIJ6zaxzBGEEqofKIr6LBTeOscce8yCtdG4dO2KLp5uYWfdB4IJU\n"
"KjhVAvJdv1UpbDpUXjhydgq3NhfeSpYmLG9dnpi/kpLcKfj0Hb0omhR86doxE7Xw\n"
"uMAKYLHOHX6BnXpDHXyQ6g5fAjEA////////////////////////////////x2NN\n"
"gfQ3Ld9YGg2ySLCneuzsGWrMxSlzAgEBoWQDYgAE8oYPSRINnKlr5ZBHWacYEq4Y\n"
"j18l5f9yoMhBhpl7qvzf7uNFQ1SHzgHu0/v662d8Z0Pc0ujIms3/9uYxXVUY73vm\n"
"iwVevOxBJ1GL0usqhWNqOKoNp048H4rCmfyMN97E\n"
"-----END EC PRIVATE KEY-----\n";
int main(int argc, char **argv)
{
struct s2n_stuffer certificate_in = { 0 }, certificate_out = { 0 };
struct s2n_stuffer ecdsa_key_in = { 0 }, ecdsa_key_out = { 0 };
struct s2n_stuffer unmatched_ecdsa_key_in = { 0 }, unmatched_ecdsa_key_out = { 0 };
struct s2n_blob b = { 0 };
char *cert_chain_pem = NULL;
char *private_key_pem = NULL;
const int supported_hash_algorithms[] = {
S2N_HASH_NONE,
S2N_HASH_MD5,
S2N_HASH_SHA1,
S2N_HASH_SHA224,
S2N_HASH_SHA256,
S2N_HASH_SHA384,
S2N_HASH_SHA512,
S2N_HASH_MD5_SHA1
};
BEGIN_TEST();
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
/* s2n_ecdsa_pkey_matches_curve */
{
struct s2n_ecdsa_key *p256_key = NULL, *p384_key = NULL;
struct s2n_cert_chain_and_key *p256_chain = NULL, *p384_chain = NULL;
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&p256_chain,
S2N_ECDSA_P256_PKCS1_CERT_CHAIN, S2N_ECDSA_P256_PKCS1_KEY));
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&p384_chain,
S2N_ECDSA_P384_PKCS1_CERT_CHAIN, S2N_ECDSA_P384_PKCS1_KEY));
p256_key = &p256_chain->private_key->key.ecdsa_key;
p384_key = &p384_chain->private_key->key.ecdsa_key;
EXPECT_SUCCESS(s2n_ecdsa_pkey_matches_curve(p256_key, &s2n_ecc_curve_secp256r1));
EXPECT_SUCCESS(s2n_ecdsa_pkey_matches_curve(p384_key, &s2n_ecc_curve_secp384r1));
EXPECT_FAILURE(s2n_ecdsa_pkey_matches_curve(p256_key, &s2n_ecc_curve_secp384r1));
EXPECT_FAILURE(s2n_ecdsa_pkey_matches_curve(p384_key, &s2n_ecc_curve_secp256r1));
EXPECT_SUCCESS(s2n_cert_chain_and_key_free(p256_chain));
EXPECT_SUCCESS(s2n_cert_chain_and_key_free(p384_chain));
};
EXPECT_SUCCESS(s2n_stuffer_alloc(&certificate_in, S2N_MAX_TEST_PEM_SIZE));
EXPECT_SUCCESS(s2n_stuffer_alloc(&certificate_out, S2N_MAX_TEST_PEM_SIZE));
EXPECT_SUCCESS(s2n_stuffer_alloc(&ecdsa_key_in, S2N_MAX_TEST_PEM_SIZE));
EXPECT_SUCCESS(s2n_stuffer_alloc(&ecdsa_key_out, S2N_MAX_TEST_PEM_SIZE));
EXPECT_SUCCESS(s2n_stuffer_alloc(&unmatched_ecdsa_key_in, sizeof(unmatched_private_key)));
EXPECT_SUCCESS(s2n_stuffer_alloc(&unmatched_ecdsa_key_out, sizeof(unmatched_private_key)));
EXPECT_NOT_NULL(cert_chain_pem = malloc(S2N_MAX_TEST_PEM_SIZE));
EXPECT_NOT_NULL(private_key_pem = malloc(S2N_MAX_TEST_PEM_SIZE));
EXPECT_SUCCESS(s2n_read_test_pem(S2N_ECDSA_P384_PKCS1_CERT_CHAIN, cert_chain_pem, S2N_MAX_TEST_PEM_SIZE));
EXPECT_SUCCESS(s2n_read_test_pem(S2N_ECDSA_P384_PKCS1_KEY, private_key_pem, S2N_MAX_TEST_PEM_SIZE));
EXPECT_SUCCESS(s2n_blob_init(&b, (uint8_t *) cert_chain_pem, strlen(cert_chain_pem) + 1));
EXPECT_SUCCESS(s2n_stuffer_write(&certificate_in, &b));
EXPECT_SUCCESS(s2n_blob_init(&b, (uint8_t *) private_key_pem, strlen(private_key_pem) + 1));
EXPECT_SUCCESS(s2n_stuffer_write(&ecdsa_key_in, &b));
EXPECT_SUCCESS(s2n_blob_init(&b, (uint8_t *) unmatched_private_key, sizeof(unmatched_private_key)));
EXPECT_SUCCESS(s2n_stuffer_write(&unmatched_ecdsa_key_in, &b));
int type = 0;
EXPECT_SUCCESS(s2n_stuffer_certificate_from_pem(&certificate_in, &certificate_out));
EXPECT_SUCCESS(s2n_stuffer_private_key_from_pem(&ecdsa_key_in, &ecdsa_key_out, &type));
EXPECT_EQUAL(type, EVP_PKEY_EC);
EXPECT_SUCCESS(s2n_stuffer_private_key_from_pem(&unmatched_ecdsa_key_in, &unmatched_ecdsa_key_out, &type));
EXPECT_EQUAL(type, EVP_PKEY_EC);
struct s2n_pkey pub_key = { 0 };
struct s2n_pkey priv_key = { 0 };
struct s2n_pkey unmatched_priv_key = { 0 };
s2n_pkey_type pkey_type = { 0 };
uint32_t available_size = 0;
available_size = s2n_stuffer_data_available(&certificate_out);
EXPECT_SUCCESS(s2n_blob_init(&b, s2n_stuffer_raw_read(&certificate_out, available_size), available_size));
EXPECT_OK(s2n_asn1der_to_public_key_and_type(&pub_key, &pkey_type, &b));
/* Test without a type hint */
int wrong_type = 0;
EXPECT_NOT_EQUAL(wrong_type, EVP_PKEY_EC);
available_size = s2n_stuffer_data_available(&ecdsa_key_out);
EXPECT_SUCCESS(s2n_blob_init(&b, s2n_stuffer_raw_read(&ecdsa_key_out, available_size), available_size));
EXPECT_OK(s2n_asn1der_to_private_key(&priv_key, &b, wrong_type));
available_size = s2n_stuffer_data_available(&unmatched_ecdsa_key_out);
EXPECT_SUCCESS(s2n_blob_init(&b, s2n_stuffer_raw_read(&unmatched_ecdsa_key_out, available_size), available_size));
EXPECT_OK(s2n_asn1der_to_private_key(&unmatched_priv_key, &b, wrong_type));
/* Verify that the public/private key pair match */
EXPECT_SUCCESS(s2n_pkey_match(&pub_key, &priv_key));
/* Try signing and verification with ECDSA */
uint8_t inputpad[] = "Hello world!";
struct s2n_blob signature = { 0 }, bad_signature = { 0 };
struct s2n_hash_state hash_one = { 0 }, hash_two = { 0 };
uint32_t maximum_signature_length = 0;
EXPECT_OK(s2n_pkey_size(&priv_key, &maximum_signature_length));
EXPECT_SUCCESS(s2n_alloc(&signature, maximum_signature_length));
EXPECT_SUCCESS(s2n_hash_new(&hash_one));
EXPECT_SUCCESS(s2n_hash_new(&hash_two));
for (size_t i = 0; i < s2n_array_len(supported_hash_algorithms); i++) {
int hash_alg = supported_hash_algorithms[i];
if (!s2n_hash_is_available(hash_alg) || hash_alg == S2N_HASH_NONE) {
/* Skip hash algorithms that are not available. */
continue;
}
EXPECT_SUCCESS(s2n_hash_init(&hash_one, hash_alg));
EXPECT_SUCCESS(s2n_hash_init(&hash_two, hash_alg));
EXPECT_SUCCESS(s2n_hash_update(&hash_one, inputpad, sizeof(inputpad)));
EXPECT_SUCCESS(s2n_hash_update(&hash_two, inputpad, sizeof(inputpad)));
/* Reset signature size when we compute a new signature */
signature.size = maximum_signature_length;
EXPECT_SUCCESS(s2n_pkey_sign(&priv_key, S2N_SIGNATURE_ECDSA, &hash_one, &signature));
EXPECT_SUCCESS(s2n_pkey_verify(&pub_key, S2N_SIGNATURE_ECDSA, &hash_two, &signature));
EXPECT_SUCCESS(s2n_hash_reset(&hash_one));
EXPECT_SUCCESS(s2n_hash_reset(&hash_two));
}
/* Mismatched public/private key should fail verification */
EXPECT_OK(s2n_pkey_size(&unmatched_priv_key, &maximum_signature_length));
EXPECT_SUCCESS(s2n_alloc(&bad_signature, maximum_signature_length));
EXPECT_FAILURE(s2n_pkey_match(&pub_key, &unmatched_priv_key));
EXPECT_SUCCESS(s2n_pkey_sign(&unmatched_priv_key, S2N_SIGNATURE_ECDSA, &hash_one, &bad_signature));
EXPECT_FAILURE(s2n_pkey_verify(&pub_key, S2N_SIGNATURE_ECDSA, &hash_two, &bad_signature));
EXPECT_SUCCESS(s2n_free(&signature));
EXPECT_SUCCESS(s2n_free(&bad_signature));
EXPECT_SUCCESS(s2n_hash_free(&hash_one));
EXPECT_SUCCESS(s2n_hash_free(&hash_two));
EXPECT_SUCCESS(s2n_pkey_free(&pub_key));
EXPECT_SUCCESS(s2n_pkey_free(&priv_key));
EXPECT_SUCCESS(s2n_pkey_free(&unmatched_priv_key));
EXPECT_SUCCESS(s2n_stuffer_free(&certificate_in));
EXPECT_SUCCESS(s2n_stuffer_free(&certificate_out));
EXPECT_SUCCESS(s2n_stuffer_free(&ecdsa_key_in));
EXPECT_SUCCESS(s2n_stuffer_free(&ecdsa_key_out));
EXPECT_SUCCESS(s2n_stuffer_free(&unmatched_ecdsa_key_in));
EXPECT_SUCCESS(s2n_stuffer_free(&unmatched_ecdsa_key_out));
free(cert_chain_pem);
free(private_key_pem);
EXPECT_SUCCESS(s2n_reset_tls13_in_test());
/* Self-Talk test */
{
const char *ecdsa_certs[][2] = {
{ S2N_ECDSA_P256_PKCS1_CERT_CHAIN, S2N_ECDSA_P256_PKCS1_KEY },
{ S2N_ECDSA_P384_PKCS1_CERT_CHAIN, S2N_ECDSA_P384_PKCS1_KEY },
{ S2N_ECDSA_P512_CERT_CHAIN, S2N_ECDSA_P512_KEY },
};
for (size_t i = 0; i < s2n_array_len(ecdsa_certs); i++) {
DEFER_CLEANUP(struct s2n_cert_chain_and_key *chain_and_key = NULL,
s2n_cert_chain_and_key_ptr_free);
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&chain_and_key,
ecdsa_certs[i][0], ecdsa_certs[i][1]));
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(),
s2n_config_ptr_free);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "test_all"));
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(config, chain_and_key));
EXPECT_SUCCESS(s2n_config_set_verification_ca_location(config,
ecdsa_certs[i][0], NULL));
EXPECT_SUCCESS(s2n_config_set_verify_host_callback(config,
s2n_test_noop_verify_host_fn, NULL));
DEFER_CLEANUP(struct s2n_connection *client = s2n_connection_new(S2N_CLIENT),
s2n_connection_ptr_free);
EXPECT_SUCCESS(s2n_connection_set_config(client, config));
DEFER_CLEANUP(struct s2n_connection *server = s2n_connection_new(S2N_SERVER),
s2n_connection_ptr_free);
EXPECT_SUCCESS(s2n_connection_set_config(server, config));
DEFER_CLEANUP(struct s2n_test_io_pair io_pair = { 0 },
s2n_io_pair_close);
EXPECT_SUCCESS(s2n_io_pair_init_non_blocking(&io_pair));
EXPECT_SUCCESS(s2n_connections_set_io_pair(client, server, &io_pair));
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server, client));
}
};
END_TEST();
}
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