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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 "tls/s2n_security_policies.h"
#include "crypto/s2n_pq.h"
#include "crypto/s2n_rsa_pss.h"
#include "crypto/s2n_rsa_signing.h"
#include "s2n_test.h"
#include "testlib/s2n_testlib.h"
#include "tls/s2n_kem.h"
#include "tls/s2n_signature_algorithms.h"
static S2N_RESULT s2n_test_security_policies_compatible(const struct s2n_security_policy *policy,
const char *default_policy, struct s2n_cert_chain_and_key *cert_chain)
{
DEFER_CLEANUP(struct s2n_config *server_config = s2n_config_new(),
s2n_config_ptr_free);
RESULT_GUARD_POSIX(s2n_config_add_cert_chain_and_key_to_store(server_config, cert_chain));
DEFER_CLEANUP(struct s2n_config *client_config = s2n_config_new(),
s2n_config_ptr_free);
RESULT_GUARD_POSIX(s2n_config_set_unsafe_for_testing(client_config));
DEFER_CLEANUP(struct s2n_connection *server = s2n_connection_new(S2N_SERVER),
s2n_connection_ptr_free);
RESULT_GUARD_POSIX(s2n_connection_set_config(server, server_config));
RESULT_GUARD_POSIX(s2n_connection_set_cipher_preferences(server, default_policy));
DEFER_CLEANUP(struct s2n_connection *client = s2n_connection_new(S2N_CLIENT),
s2n_connection_ptr_free);
RESULT_GUARD_POSIX(s2n_connection_set_config(client, client_config));
client->security_policy_override = policy;
DEFER_CLEANUP(struct s2n_test_io_pair test_io_pair = { 0 },
s2n_io_pair_close);
RESULT_GUARD_POSIX(s2n_io_pair_init_non_blocking(&test_io_pair));
RESULT_GUARD_POSIX(s2n_connections_set_io_pair(client, server, &test_io_pair));
RESULT_GUARD_POSIX(s2n_negotiate_test_server_and_client(server, client));
return S2N_RESULT_OK;
}
int main(int argc, char **argv)
{
BEGIN_TEST();
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
DEFER_CLEANUP(struct s2n_cert_chain_and_key *rsa_chain_and_key = NULL, s2n_cert_chain_and_key_ptr_free);
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&rsa_chain_and_key,
S2N_DEFAULT_TEST_CERT_CHAIN, S2N_DEFAULT_TEST_PRIVATE_KEY));
DEFER_CLEANUP(struct s2n_cert_chain_and_key *ecdsa_chain_and_key = NULL, s2n_cert_chain_and_key_ptr_free);
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&ecdsa_chain_and_key,
S2N_DEFAULT_ECDSA_TEST_CERT_CHAIN, S2N_DEFAULT_ECDSA_TEST_PRIVATE_KEY));
DEFER_CLEANUP(struct s2n_cert_chain_and_key *rsa_pss_chain_and_key = NULL, s2n_cert_chain_and_key_ptr_free);
if (s2n_is_rsa_pss_certs_supported()) {
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&rsa_pss_chain_and_key,
S2N_RSA_PSS_2048_SHA256_LEAF_CERT, S2N_RSA_PSS_2048_SHA256_LEAF_KEY));
}
/* Perform basic checks on all Security Policies. */
for (size_t policy_index = 0; security_policy_selection[policy_index].version != NULL; policy_index++) {
const struct s2n_security_policy *security_policy = security_policy_selection[policy_index].security_policy;
/* TLS 1.3 + PQ checks */
if (security_policy->kem_preferences->tls13_kem_group_count > 0) {
/* Ensure that no TLS 1.3 KEM group preference lists go over max supported limit */
EXPECT_TRUE(security_policy->kem_preferences->tls13_kem_group_count <= S2N_KEM_GROUPS_COUNT);
/* Ensure all TLS 1.3 KEM groups in all policies are in the global list of all supported KEM groups */
for (size_t i = 0; i < security_policy->kem_preferences->tls13_kem_group_count; i++) {
const struct s2n_kem_group *kem_group = security_policy->kem_preferences->tls13_kem_groups[i];
bool kem_group_is_supported = false;
for (size_t j = 0; j < kem_preferences_all.tls13_kem_group_count; j++) {
if (kem_group->iana_id == kem_preferences_all.tls13_kem_groups[j]->iana_id) {
kem_group_is_supported = true;
break;
}
}
EXPECT_TRUE(kem_group_is_supported);
}
}
/* TLS 1.3 Cipher suites have TLS 1.3 Signature Algorithms Test */
bool has_tls_13_cipher = false;
for (size_t i = 0; i < security_policy->cipher_preferences->count; i++) {
if (security_policy->cipher_preferences->suites[i]->minimum_required_tls_version == S2N_TLS13) {
has_tls_13_cipher = true;
break;
}
}
if (has_tls_13_cipher) {
bool has_tls_13_sig_alg = false;
bool has_rsa_pss = false;
for (size_t i = 0; i < security_policy->signature_preferences->count; i++) {
int min = security_policy->signature_preferences->signature_schemes[i]->minimum_protocol_version;
int max = security_policy->signature_preferences->signature_schemes[i]->maximum_protocol_version;
s2n_signature_algorithm sig_alg = security_policy->signature_preferences->signature_schemes[i]->sig_alg;
if (min == S2N_TLS13 || max >= S2N_TLS13) {
has_tls_13_sig_alg = true;
}
if (sig_alg == S2N_SIGNATURE_RSA_PSS_PSS || sig_alg == S2N_SIGNATURE_RSA_PSS_RSAE) {
has_rsa_pss = true;
}
}
EXPECT_TRUE(has_tls_13_sig_alg);
EXPECT_TRUE(has_rsa_pss);
}
}
const struct s2n_security_policy *security_policy = NULL;
/* Test common known good cipher suites for expected configuration */
{
EXPECT_SUCCESS(s2n_find_security_policy_from_version("default", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_FALSE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(0, security_policy->kem_preferences->kem_count);
EXPECT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(0, security_policy->kem_preferences->tls13_kem_group_count);
EXPECT_FALSE(s2n_security_policy_supports_tls13(security_policy));
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("default_tls13", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_FALSE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_TRUE(s2n_security_policy_supports_tls13(security_policy));
EXPECT_EQUAL(0, security_policy->kem_preferences->kems);
EXPECT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(0, security_policy->kem_preferences->tls13_kem_group_count);
EXPECT_NULL(security_policy->kem_preferences->kems);
/* The "all" security policy contains both TLS 1.2 KEM extension and TLS 1.3 KEM SupportedGroup entries*/
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("test_all", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(&s2n_kyber_512_r3, security_policy->kem_preferences->kems[0]);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2023_06);
/* All supported kem groups should be in the preference list, but not all of them may be available. */
EXPECT_EQUAL(6, security_policy->kem_preferences->tls13_kem_group_count);
uint32_t available_groups = 0;
EXPECT_OK(s2n_kem_preferences_groups_available(security_policy->kem_preferences, &available_groups));
if (s2n_pq_is_enabled() && s2n_libcrypto_supports_kyber() && s2n_is_evp_apis_supported()) {
EXPECT_EQUAL(6, available_groups);
} else if (s2n_pq_is_enabled() && s2n_libcrypto_supports_kyber() && !s2n_is_evp_apis_supported()) {
EXPECT_EQUAL(4, available_groups);
} else if (s2n_pq_is_enabled() && !s2n_libcrypto_supports_kyber() && s2n_is_evp_apis_supported()) {
EXPECT_EQUAL(2, available_groups);
} else if (s2n_pq_is_enabled()) {
EXPECT_EQUAL(1, available_groups);
} else {
EXPECT_EQUAL(0, available_groups);
}
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("KMS-TLS-1-0-2018-10", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_FALSE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(0, security_policy->kem_preferences->kem_count);
EXPECT_NULL(security_policy->kem_preferences->kems);
EXPECT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(0, security_policy->kem_preferences->tls13_kem_group_count);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("KMS-PQ-TLS-1-0-2019-06", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_FALSE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(0, security_policy->kem_preferences->kem_count);
EXPECT_NULL(security_policy->kem_preferences->kems);
EXPECT_NULL(security_policy->kem_preferences->kems);
EXPECT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(0, security_policy->kem_preferences->tls13_kem_group_count);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-SIKE-TEST-TLS-1-0-2019-11", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_FALSE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(0, security_policy->kem_preferences->kem_count);
EXPECT_NULL(security_policy->kem_preferences->kems);
EXPECT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(0, security_policy->kem_preferences->tls13_kem_group_count);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-SIKE-TEST-TLS-1-0-2020-02", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_FALSE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(0, security_policy->kem_preferences->kem_count);
EXPECT_NULL(security_policy->kem_preferences->kems);
EXPECT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(0, security_policy->kem_preferences->tls13_kem_group_count);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("KMS-PQ-TLS-1-0-2020-02", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_FALSE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(0, security_policy->kem_preferences->kem_count);
EXPECT_NULL(security_policy->kem_preferences->kems);
EXPECT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(0, security_policy->kem_preferences->tls13_kem_group_count);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("KMS-PQ-TLS-1-0-2020-07", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_OK(s2n_kem_preferences_groups_available(security_policy->kem_preferences, &available_groups));
if (s2n_pq_is_enabled() && s2n_is_evp_apis_supported()) {
EXPECT_EQUAL(2, available_groups);
} else if (s2n_pq_is_enabled()) {
EXPECT_EQUAL(1, available_groups);
} else {
EXPECT_EQUAL(0, available_groups);
}
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-0-2020-12", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_OK(s2n_kem_preferences_groups_available(security_policy->kem_preferences, &available_groups));
if (s2n_pq_is_enabled() && s2n_is_evp_apis_supported()) {
EXPECT_EQUAL(2, available_groups);
} else if (s2n_pq_is_enabled()) {
EXPECT_EQUAL(1, available_groups);
} else {
EXPECT_EQUAL(0, available_groups);
}
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-1-2021-05-17", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20140601);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-0-2021-05-18", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20140601);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-0-2021-05-19", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20140601);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-0-2021-05-20", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20140601);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-1-2021-05-21", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20200207);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-0-2021-05-22", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20200207);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-0-2021-05-23", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20200207);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-0-2021-05-24", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20200207);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-0-2021-05-25", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20140601);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-0-2021-05-26", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(1, security_policy->kem_preferences->kem_count);
EXPECT_NOT_NULL(security_policy->kem_preferences->kems);
EXPECT_EQUAL(security_policy->kem_preferences->kems, pq_kems_r3_2021_05);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20200207);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("PQ-TLS-1-3-2023-06-01", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_FALSE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(security_policy->kem_preferences, &kem_preferences_pq_tls_1_3_2023_06);
EXPECT_EQUAL(0, security_policy->kem_preferences->kem_count);
EXPECT_NULL(security_policy->kem_preferences->kems);
EXPECT_NOT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(security_policy->kem_preferences->tls13_kem_groups, pq_kem_groups_r3_2023_06);
/* All supported kem groups should be in the preference list, but not all of them may be available. */
EXPECT_EQUAL(6, security_policy->kem_preferences->tls13_kem_group_count);
EXPECT_OK(s2n_kem_preferences_groups_available(security_policy->kem_preferences, &available_groups));
if (s2n_pq_is_enabled() && s2n_libcrypto_supports_kyber() && s2n_is_evp_apis_supported()) {
EXPECT_EQUAL(6, available_groups);
} else if (s2n_pq_is_enabled() && s2n_libcrypto_supports_kyber() && !s2n_is_evp_apis_supported()) {
EXPECT_EQUAL(4, available_groups);
} else if (s2n_pq_is_enabled() && !s2n_libcrypto_supports_kyber() && s2n_is_evp_apis_supported()) {
EXPECT_EQUAL(2, available_groups);
} else if (s2n_pq_is_enabled()) {
EXPECT_EQUAL(1, available_groups);
} else {
EXPECT_EQUAL(0, available_groups);
}
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("20141001", &security_policy));
EXPECT_FALSE(s2n_ecc_is_extension_required(security_policy));
EXPECT_FALSE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(0, security_policy->kem_preferences->kem_count);
EXPECT_NULL(security_policy->kem_preferences->kems);
EXPECT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(0, security_policy->kem_preferences->tls13_kem_group_count);
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("20201021", &security_policy));
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_FALSE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_EQUAL(0, security_policy->kem_preferences->kem_count);
EXPECT_NULL(security_policy->kem_preferences->kems);
EXPECT_NULL(security_policy->kem_preferences->tls13_kem_groups);
EXPECT_EQUAL(0, security_policy->kem_preferences->tls13_kem_group_count);
}
{
char tls12_only_security_policy_strings[][255] = {
"default",
"default_fips",
"ELBSecurityPolicy-TLS-1-0-2015-04",
"ELBSecurityPolicy-TLS-1-0-2015-05",
"ELBSecurityPolicy-2016-08",
"ELBSecurityPolicy-TLS-1-1-2017-01",
"ELBSecurityPolicy-TLS-1-2-2017-01",
"ELBSecurityPolicy-TLS-1-2-Ext-2018-06",
"ELBSecurityPolicy-FS-2018-06",
"ELBSecurityPolicy-FS-1-2-2019-08",
"ELBSecurityPolicy-FS-1-1-2019-08",
"ELBSecurityPolicy-FS-1-2-Res-2019-08",
"CloudFront-Upstream",
"CloudFront-Upstream-TLS-1-0",
"CloudFront-Upstream-TLS-1-1",
"CloudFront-Upstream-TLS-1-2",
/* CloudFront legacy viewer facing policies (max TLS 1.2) */
"CloudFront-SSL-v-3-Legacy",
"CloudFront-TLS-1-0-2014-Legacy",
"CloudFront-TLS-1-0-2016-Legacy",
"CloudFront-TLS-1-1-2016-Legacy",
"CloudFront-TLS-1-2-2018-Legacy",
"CloudFront-TLS-1-2-2019-Legacy",
"KMS-TLS-1-0-2018-10",
"KMS-PQ-TLS-1-0-2019-06",
"KMS-PQ-TLS-1-0-2020-02",
"KMS-PQ-TLS-1-0-2020-07",
"PQ-SIKE-TEST-TLS-1-0-2019-11",
"PQ-SIKE-TEST-TLS-1-0-2020-02",
"KMS-FIPS-TLS-1-2-2018-10",
"20140601",
"20141001",
"20150202",
"20150214",
"20150306",
"20160411",
"20160804",
"20160824",
"20170210",
"20170328",
"20190214",
"20170405",
"20170718",
"20190120",
"20190121",
"20190122",
"20201021",
"test_all_ecdsa",
"test_ecdsa_priority",
"test_all_tls12",
};
for (size_t i = 0; i < s2n_array_len(tls12_only_security_policy_strings); i++) {
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version(tls12_only_security_policy_strings[i], &security_policy));
EXPECT_FALSE(s2n_security_policy_supports_tls13(security_policy));
}
char tls13_security_policy_strings[][255] = {
"default_tls13",
"test_all",
"test_all_tls13",
"20190801",
"20190802",
"KMS-TLS-1-2-2023-06",
/* CloudFront viewer facing */
"CloudFront-SSL-v-3",
"CloudFront-TLS-1-0-2014",
"CloudFront-TLS-1-0-2016",
"CloudFront-TLS-1-1-2016",
"CloudFront-TLS-1-2-2017",
"CloudFront-TLS-1-2-2018",
"CloudFront-TLS-1-2-2019",
"CloudFront-TLS-1-2-2021",
"CloudFront-TLS-1-2-2021-ChaCha20-Boosted",
/* AWS Common Runtime SDK */
"AWS-CRT-SDK-SSLv3.0",
"AWS-CRT-SDK-TLSv1.0",
"AWS-CRT-SDK-TLSv1.1",
"AWS-CRT-SDK-TLSv1.2",
"AWS-CRT-SDK-TLSv1.3",
"AWS-CRT-SDK-SSLv3.0-2023",
"AWS-CRT-SDK-TLSv1.0-2023",
"AWS-CRT-SDK-TLSv1.1-2023",
"AWS-CRT-SDK-TLSv1.2-2023",
"AWS-CRT-SDK-TLSv1.3-2023",
/* PQ TLS */
"PQ-TLS-1-2-2023-04-07",
"PQ-TLS-1-2-2023-04-08",
"PQ-TLS-1-2-2023-04-09",
"PQ-TLS-1-2-2023-04-10",
"PQ-TLS-1-3-2023-06-01",
"PQ-TLS-1-2-2023-10-07",
"PQ-TLS-1-2-2023-10-08",
"PQ-TLS-1-2-2023-10-09",
"PQ-TLS-1-2-2023-10-10",
};
for (size_t i = 0; i < s2n_array_len(tls13_security_policy_strings); i++) {
security_policy = NULL;
EXPECT_SUCCESS(s2n_find_security_policy_from_version(tls13_security_policy_strings[i], &security_policy));
EXPECT_TRUE(s2n_security_policy_supports_tls13(security_policy));
}
}
/* Test that null fails */
{
security_policy = NULL;
EXPECT_FALSE(s2n_ecc_is_extension_required(security_policy));
EXPECT_FALSE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_FALSE(s2n_security_policy_supports_tls13(security_policy));
}
/* Test that security policies have valid chacha20 boosting configurations when chacha20 is available */
if (s2n_chacha20_poly1305.is_available()) {
for (size_t i = 0; security_policy_selection[i].version != NULL; i++) {
const struct s2n_security_policy *sec_policy = security_policy_selection[i].security_policy;
EXPECT_NOT_NULL(sec_policy);
const struct s2n_cipher_preferences *cipher_preference = sec_policy->cipher_preferences;
EXPECT_NOT_NULL(cipher_preference);
/* No need to check cipher preferences with chacha20 boosting disabled */
if (!cipher_preference->allow_chacha20_boosting) {
continue;
}
bool cipher_preferences_has_chacha20_cipher_suite = false;
/* Iterate over cipher preferences and try to find a chacha20 ciphersuite */
for (size_t j = 0; j < cipher_preference->count; j++) {
struct s2n_cipher_suite *cipher = cipher_preference->suites[j];
EXPECT_NOT_NULL(cipher);
if (s2n_cipher_suite_uses_chacha20_alg(cipher)) {
cipher_preferences_has_chacha20_cipher_suite = true;
break;
}
}
/* If chacha20 boosting support is enabled, then the cipher preference must have at least one chacha20 cipher suite */
EXPECT_TRUE(cipher_preferences_has_chacha20_cipher_suite);
}
}
/* Test a security policy not on the official list */
{
struct s2n_cipher_suite *fake_suites[] = {
&s2n_ecdhe_kyber_rsa_with_aes_256_gcm_sha384,
&s2n_tls13_chacha20_poly1305_sha256,
};
const struct s2n_cipher_preferences fake_cipher_preference = {
.count = s2n_array_len(fake_suites),
.suites = fake_suites,
};
const struct s2n_kem_preferences fake_kem_preference = {
.kem_count = 1,
.kems = NULL,
};
const struct s2n_security_policy fake_security_policy = {
.minimum_protocol_version = S2N_TLS10,
.cipher_preferences = &fake_cipher_preference,
.kem_preferences = &fake_kem_preference,
};
security_policy = &fake_security_policy;
EXPECT_TRUE(s2n_ecc_is_extension_required(security_policy));
EXPECT_TRUE(s2n_pq_kem_is_extension_required(security_policy));
EXPECT_TRUE(s2n_security_policy_supports_tls13(security_policy));
}
{
struct s2n_config *config = s2n_config_new();
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "default"));
EXPECT_EQUAL(config->security_policy, &security_policy_20170210);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_20170210);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20140601);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20140601);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "20170210"));
EXPECT_EQUAL(config->security_policy, &security_policy_20170210);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_20170210);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20140601);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20140601);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "default_tls13"));
EXPECT_EQUAL(config->security_policy, &security_policy_default_tls13);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_20210831);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20200207);
EXPECT_EQUAL(config->security_policy->certificate_signature_preferences, &s2n_certificate_signature_preferences_20201110);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20200310);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "20190801"));
EXPECT_EQUAL(config->security_policy, &security_policy_20190801);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_20190801);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20200207);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20200310);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "null"));
EXPECT_EQUAL(config->security_policy, &security_policy_null);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_null);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_null);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_null);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "test_all"));
EXPECT_EQUAL(config->security_policy, &security_policy_test_all);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_test_all);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_all);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20201021);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_test_all);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "test_all_tls12"));
EXPECT_EQUAL(config->security_policy, &security_policy_test_all_tls12);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_test_all_tls12);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_pq_tls_1_0_2021_05);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20201021);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20201021);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "KMS-PQ-TLS-1-0-2020-07"));
EXPECT_EQUAL(config->security_policy, &security_policy_kms_pq_tls_1_0_2020_07);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_kms_pq_tls_1_0_2020_07);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_pq_tls_1_0_2021_05);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20140601);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20140601);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "KMS-PQ-TLS-1-0-2020-02"));
EXPECT_EQUAL(config->security_policy, &security_policy_kms_pq_tls_1_0_2020_02);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_kms_pq_tls_1_0_2020_02);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20140601);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20140601);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "KMS-PQ-TLS-1-0-2019-06"));
EXPECT_EQUAL(config->security_policy, &security_policy_kms_pq_tls_1_0_2019_06);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_kms_pq_tls_1_0_2019_06);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20140601);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20140601);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "AWS-CRT-SDK-SSLv3.0"));
EXPECT_EQUAL(config->security_policy, &security_policy_aws_crt_sdk_ssl_v3);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_aws_crt_sdk_ssl_v3);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20200207);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20200310);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "AWS-CRT-SDK-TLSv1.0"));
EXPECT_EQUAL(config->security_policy, &security_policy_aws_crt_sdk_tls_10);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_aws_crt_sdk_default);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20200207);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20200310);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "AWS-CRT-SDK-TLSv1.1"));
EXPECT_EQUAL(config->security_policy, &security_policy_aws_crt_sdk_tls_11);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_aws_crt_sdk_default);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20200207);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20200310);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "AWS-CRT-SDK-TLSv1.2"));
EXPECT_EQUAL(config->security_policy, &security_policy_aws_crt_sdk_tls_12);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_aws_crt_sdk_default);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20200207);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20200310);
if (s2n_is_tls13_fully_supported()) {
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "AWS-CRT-SDK-TLSv1.3"));
EXPECT_EQUAL(config->security_policy, &security_policy_aws_crt_sdk_tls_13);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_aws_crt_sdk_tls_13);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20200207);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20200310);
} else {
EXPECT_FAILURE(s2n_config_set_cipher_preferences(config, "AWS-CRT-SDK-TLSv1.3"));
}
EXPECT_FAILURE(s2n_config_set_cipher_preferences(config, NULL));
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_cipher_preferences(config, "notathing"),
S2N_ERR_INVALID_SECURITY_POLICY);
s2n_config_free(config);
}
{
struct s2n_config *config = s2n_config_new();
struct s2n_connection *conn = s2n_connection_new(S2N_CLIENT);
s2n_connection_set_config(conn, config);
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(conn, "default"));
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, &security_policy_20170210);
EXPECT_EQUAL(security_policy->cipher_preferences, &cipher_preferences_20170210);
EXPECT_EQUAL(security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20140601);
EXPECT_EQUAL(security_policy->ecc_preferences, &s2n_ecc_preferences_20140601);
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(conn, "20170210"));
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, &security_policy_20170210);
EXPECT_EQUAL(security_policy->cipher_preferences, &cipher_preferences_20170210);
EXPECT_EQUAL(security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20140601);
EXPECT_EQUAL(security_policy->ecc_preferences, &s2n_ecc_preferences_20140601);
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(conn, "default_tls13"));
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, &security_policy_default_tls13);
EXPECT_EQUAL(security_policy->cipher_preferences, &cipher_preferences_20210831);
EXPECT_EQUAL(security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20200207);
EXPECT_EQUAL(security_policy->certificate_signature_preferences, &s2n_certificate_signature_preferences_20201110);
EXPECT_EQUAL(security_policy->ecc_preferences, &s2n_ecc_preferences_20200310);
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(conn, "20190801"));
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, &security_policy_20190801);
EXPECT_EQUAL(security_policy->cipher_preferences, &cipher_preferences_20190801);
EXPECT_EQUAL(security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20200207);
EXPECT_EQUAL(security_policy->ecc_preferences, &s2n_ecc_preferences_20200310);
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(conn, "test_all"));
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, &security_policy_test_all);
EXPECT_EQUAL(security_policy->cipher_preferences, &cipher_preferences_test_all);
EXPECT_EQUAL(security_policy->kem_preferences, &kem_preferences_all);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20201021);
EXPECT_EQUAL(security_policy->ecc_preferences, &s2n_ecc_preferences_test_all);
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(conn, "test_all_tls12"));
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, &security_policy_test_all_tls12);
EXPECT_EQUAL(security_policy->cipher_preferences, &cipher_preferences_test_all_tls12);
EXPECT_EQUAL(security_policy->kem_preferences, &kem_preferences_pq_tls_1_0_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20201021);
EXPECT_EQUAL(security_policy->ecc_preferences, &s2n_ecc_preferences_20201021);
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(conn, "KMS-PQ-TLS-1-0-2020-07"));
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, &security_policy_kms_pq_tls_1_0_2020_07);
EXPECT_EQUAL(security_policy->cipher_preferences, &cipher_preferences_kms_pq_tls_1_0_2020_07);
EXPECT_EQUAL(security_policy->kem_preferences, &kem_preferences_pq_tls_1_0_2021_05);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20140601);
EXPECT_EQUAL(security_policy->ecc_preferences, &s2n_ecc_preferences_20140601);
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(conn, "KMS-PQ-TLS-1-0-2020-02"));
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, &security_policy_kms_pq_tls_1_0_2020_02);
EXPECT_EQUAL(security_policy->cipher_preferences, &cipher_preferences_kms_pq_tls_1_0_2020_02);
EXPECT_EQUAL(security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20140601);
EXPECT_EQUAL(security_policy->ecc_preferences, &s2n_ecc_preferences_20140601);
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(conn, "KMS-PQ-TLS-1-0-2019-06"));
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, &security_policy_kms_pq_tls_1_0_2019_06);
EXPECT_EQUAL(security_policy->cipher_preferences, &cipher_preferences_kms_pq_tls_1_0_2019_06);
EXPECT_EQUAL(security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(security_policy->signature_preferences, &s2n_signature_preferences_20140601);
EXPECT_EQUAL(security_policy->ecc_preferences, &s2n_ecc_preferences_20140601);
EXPECT_FAILURE_WITH_ERRNO(s2n_connection_set_cipher_preferences(conn, "notathing"),
S2N_ERR_INVALID_SECURITY_POLICY);
s2n_config_free(config);
s2n_connection_free(conn);
}
/* All signature preferences are valid */
{
for (int i = 0; security_policy_selection[i].version != NULL; i++) {
security_policy = security_policy_selection[i].security_policy;
EXPECT_NOT_NULL(security_policy);
EXPECT_NOT_NULL(security_policy->signature_preferences);
for (int j = 0; j < security_policy->signature_preferences->count; j++) {
const struct s2n_signature_scheme *scheme = security_policy->signature_preferences->signature_schemes[j];
EXPECT_NOT_NULL(scheme);
uint8_t max_version = scheme->maximum_protocol_version;
uint8_t min_version = scheme->minimum_protocol_version;
EXPECT_TRUE(max_version == S2N_UNKNOWN_PROTOCOL_VERSION || min_version <= max_version);
/* If scheme will be used for tls1.3 */
if (max_version == S2N_UNKNOWN_PROTOCOL_VERSION || max_version >= S2N_TLS13) {
EXPECT_NOT_EQUAL(scheme->hash_alg, S2N_HASH_SHA1);
EXPECT_NOT_EQUAL(scheme->sig_alg, S2N_SIGNATURE_RSA);
if (scheme->sig_alg == S2N_SIGNATURE_ECDSA) {
EXPECT_NOT_NULL(scheme->signature_curve);
}
}
/* If scheme will be used for pre-tls1.3 */
if (min_version < S2N_TLS13) {
EXPECT_NULL(scheme->signature_curve);
EXPECT_NOT_EQUAL(scheme->sig_alg, S2N_SIGNATURE_RSA_PSS_PSS);
}
}
}
}
/* Failure case when s2n_ecc_preference lists contains a curve not present in s2n_all_supported_curves_list */
{
const struct s2n_ecc_named_curve test_curve = {
.iana_id = 12345,
.libcrypto_nid = 0,
.name = "test_curve",
.share_size = 0
};
const struct s2n_ecc_named_curve *const s2n_ecc_pref_list_test[] = {
&test_curve,
};
const struct s2n_ecc_preferences s2n_ecc_preferences_new_list = {
.count = s2n_array_len(s2n_ecc_pref_list_test),
.ecc_curves = s2n_ecc_pref_list_test,
};
EXPECT_FAILURE(s2n_check_ecc_preferences_curves_list(&s2n_ecc_preferences_new_list));
}
/* Positive and negative cases for s2n_validate_kem_preferences() */
{
EXPECT_FAILURE_WITH_ERRNO(s2n_validate_kem_preferences(NULL, 0), S2N_ERR_NULL);
EXPECT_FAILURE_WITH_ERRNO(s2n_validate_kem_preferences(&kem_preferences_null, 1), S2N_ERR_INVALID_SECURITY_POLICY);
EXPECT_SUCCESS(s2n_validate_kem_preferences(&kem_preferences_null, 0));
const struct s2n_kem_preferences invalid_kem_prefs[] = {
{
.kem_count = 1,
.kems = NULL,
.tls13_kem_group_count = 0,
.tls13_kem_groups = NULL,
},
{
.kem_count = 0,
.kems = NULL,
.tls13_kem_group_count = 1,
.tls13_kem_groups = NULL,
},
{
.kem_count = 0,
.kems = pq_kems_r3_2021_05,
.tls13_kem_group_count = 0,
.tls13_kem_groups = NULL,
},
{
.kem_count = 0,
.kems = NULL,
.tls13_kem_group_count = 0,
.tls13_kem_groups = kem_preferences_all.tls13_kem_groups,
},
};
for (size_t i = 0; i < s2n_array_len(invalid_kem_prefs); i++) {
EXPECT_FAILURE_WITH_ERRNO(s2n_validate_kem_preferences(&invalid_kem_prefs[i], 1), S2N_ERR_INVALID_SECURITY_POLICY);
}
EXPECT_FAILURE_WITH_ERRNO(s2n_validate_kem_preferences(&kem_preferences_pq_tls_1_0_2021_05, 0), S2N_ERR_INVALID_SECURITY_POLICY);
EXPECT_SUCCESS(s2n_validate_kem_preferences(&kem_preferences_pq_tls_1_0_2021_05, 1));
}
/* Checks that NUM_RSA_PSS_SCHEMES accurately represents the number of rsa_pss signature schemes usable in a
* certificate_signature_preferences list */
{
for (size_t i = 0; security_policy_selection[i].version != NULL; i++) {
security_policy = security_policy_selection[i].security_policy;
EXPECT_NOT_NULL(security_policy);
if (security_policy->certificate_signature_preferences != NULL) {
size_t num_rsa_pss = 0;
for (size_t j = 0; j < security_policy->certificate_signature_preferences->count; j++) {
if (security_policy->certificate_signature_preferences->signature_schemes[j]->libcrypto_nid == NID_rsassaPss) {
num_rsa_pss += 1;
}
}
EXPECT_TRUE(num_rsa_pss <= NUM_RSA_PSS_SCHEMES);
}
}
}
/* s2n_validate_certificate_signature_preferences will succeed if there are no rsa_pss schemes in the preference list */
{
const struct s2n_signature_scheme *const test_sig_scheme_pref_list[] = {
&s2n_rsa_pkcs1_sha256,
};
const struct s2n_signature_preferences test_certificate_signature_preferences = {
.count = s2n_array_len(test_sig_scheme_pref_list),
.signature_schemes = test_sig_scheme_pref_list,
};
EXPECT_OK(s2n_validate_certificate_signature_preferences(&test_certificate_signature_preferences));
}
/* s2n_validate_certificate_signature_preferences will succeed if all rsa_pss schemes are included in the preference list */
{
const struct s2n_signature_scheme *const test_sig_scheme_pref_list[] = {
&s2n_rsa_pss_pss_sha256,
&s2n_rsa_pss_pss_sha384,
&s2n_rsa_pss_pss_sha512,
&s2n_rsa_pss_rsae_sha256,
&s2n_rsa_pss_rsae_sha384,
&s2n_rsa_pss_rsae_sha512,
};
const struct s2n_signature_preferences test_certificate_signature_preferences = {
.count = s2n_array_len(test_sig_scheme_pref_list),
.signature_schemes = test_sig_scheme_pref_list,
};
EXPECT_OK(s2n_validate_certificate_signature_preferences(&test_certificate_signature_preferences));
}
/* s2n_validate_certificate_signature_preferences will fail if not all rsa_pss schemes are included in the preference list */
{
const struct s2n_signature_scheme *const test_sig_scheme_pref_list[] = {
&s2n_rsa_pss_pss_sha256,
&s2n_rsa_pss_pss_sha384,
};
const struct s2n_signature_preferences test_certificate_signature_preferences = {
.count = s2n_array_len(test_sig_scheme_pref_list),
.signature_schemes = test_sig_scheme_pref_list,
};
EXPECT_ERROR_WITH_ERRNO(s2n_validate_certificate_signature_preferences(&test_certificate_signature_preferences), S2N_ERR_INVALID_SECURITY_POLICY);
}
EXPECT_SUCCESS(s2n_reset_tls13_in_test());
/* Test that security policies are compatible with other policies */
{
/* 20230317 */
{
EXPECT_OK(s2n_test_security_policies_compatible(&security_policy_20230317, "default", rsa_chain_and_key));
EXPECT_OK(s2n_test_security_policies_compatible(&security_policy_20230317, "default_tls13", rsa_chain_and_key));
EXPECT_OK(s2n_test_security_policies_compatible(&security_policy_20230317, "default_fips", rsa_chain_and_key));
EXPECT_OK(s2n_test_security_policies_compatible(&security_policy_20230317, "20230317", rsa_chain_and_key));
EXPECT_OK(s2n_test_security_policies_compatible(&security_policy_20230317, "default_tls13", ecdsa_chain_and_key));
EXPECT_OK(s2n_test_security_policies_compatible(&security_policy_20230317, "default_fips", ecdsa_chain_and_key));
EXPECT_OK(s2n_test_security_policies_compatible(&security_policy_20230317, "20230317", ecdsa_chain_and_key));
if (s2n_is_rsa_pss_certs_supported()) {
EXPECT_OK(s2n_test_security_policies_compatible(&security_policy_20230317, "default_tls13", rsa_pss_chain_and_key));
EXPECT_OK(s2n_test_security_policies_compatible(&security_policy_20230317, "20230317", rsa_pss_chain_and_key));
}
};
};
END_TEST();
}
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