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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_kem_preferences.h"
#if !defined(S2N_NO_PQ)
/* Extension list for round 1 PQ KEMs, in order of preference */
const struct s2n_kem *pq_kems_r1[2] = {
&s2n_bike1_l1_r1,
&s2n_sike_p503_r1,
};
/* Extension list for round 2 and round 1 PQ KEMs, in order of preference */
const struct s2n_kem *pq_kems_r2r1[4] = {
&s2n_bike1_l1_r2,
&s2n_sike_p434_r2,
&s2n_bike1_l1_r1,
&s2n_sike_p503_r1,
};
const struct s2n_kem *pq_kems_r2r1_2020_07[5] = {
&s2n_kyber_512_r2,
&s2n_bike1_l1_r2,
&s2n_sike_p434_r2,
&s2n_bike1_l1_r1,
&s2n_sike_p503_r1,
};
/* Extension list for SIKE P503 Round 1 only (for testing) */
const struct s2n_kem *pq_kems_sike_r1[1] = {
&s2n_sike_p503_r1,
};
/* Extension list for SIKE P434 Round 2 and SIKE P503 Round 1 only (for testing),
* in order of preference */
const struct s2n_kem *pq_kems_sike_r2r1[2] = {
&s2n_sike_p434_r2,
&s2n_sike_p503_r1,
};
const struct s2n_kem_group *pq_kem_groups_r2[] = {
#if EVP_APIS_SUPPORTED
&s2n_x25519_kyber_512_r2,
&s2n_secp256r1_kyber_512_r2,
&s2n_x25519_bike1_l1_r2,
&s2n_secp256r1_bike1_l1_r2,
&s2n_x25519_sike_p434_r2,
&s2n_secp256r1_sike_p434_r2,
#else
&s2n_secp256r1_kyber_512_r2,
&s2n_secp256r1_bike1_l1_r2,
&s2n_secp256r1_sike_p434_r2,
#endif
};
/* Includes only round 1 PQ KEM params */
const struct s2n_kem_preferences kem_preferences_kms_pq_tls_1_0_2019_06 = {
.kem_count = s2n_array_len(pq_kems_r1),
.kems = pq_kems_r1,
.tls13_kem_group_count = 0,
.tls13_kem_groups = NULL,
};
/* Includes round 1 and round 2 PQ KEM params. */
const struct s2n_kem_preferences kem_preferences_kms_pq_tls_1_0_2020_02 = {
.kem_count = s2n_array_len(pq_kems_r2r1),
.kems = pq_kems_r2r1,
.tls13_kem_group_count = 0,
.tls13_kem_groups = NULL,
};
const struct s2n_kem_preferences kem_preferences_kms_pq_tls_1_0_2020_07 = {
.kem_count = s2n_array_len(pq_kems_r2r1_2020_07),
.kems = pq_kems_r2r1_2020_07,
.tls13_kem_group_count = 0,
.tls13_kem_groups = NULL,
};
/* Includes only SIKE round 1 (for integration tests) */
const struct s2n_kem_preferences kem_preferences_pq_sike_test_tls_1_0_2019_11 = {
.kem_count = s2n_array_len(pq_kems_sike_r1),
.kems = pq_kems_sike_r1,
.tls13_kem_group_count = 0,
.tls13_kem_groups = NULL,
};
/* Includes only SIKE round 1 and round 2 (for integration tests). */
const struct s2n_kem_preferences kem_preferences_pq_sike_test_tls_1_0_2020_02 = {
.kem_count = s2n_array_len(pq_kems_sike_r2r1),
.kems = pq_kems_sike_r2r1,
.tls13_kem_group_count = 0,
.tls13_kem_groups = NULL,
};
const struct s2n_kem_preferences kem_preferences_pq_tls_1_0_2020_12 = {
.kem_count = s2n_array_len(pq_kems_r2r1_2020_07),
.kems = pq_kems_r2r1_2020_07,
.tls13_kem_group_count = s2n_array_len(pq_kem_groups_r2),
.tls13_kem_groups = pq_kem_groups_r2,
};
#endif
const struct s2n_kem_preferences kem_preferences_null = {
.kem_count = 0,
.kems = NULL,
.tls13_kem_group_count = 0,
.tls13_kem_groups = NULL,
};
/* Determines if query_iana_id corresponds to a tls13_kem_group for these KEM preferences. */
bool s2n_kem_preferences_includes_tls13_kem_group(const struct s2n_kem_preferences *kem_preferences,
uint16_t query_iana_id) {
if (kem_preferences == NULL) {
return false;
}
for (size_t i = 0; i < kem_preferences->tls13_kem_group_count; i++) {
if (query_iana_id == kem_preferences->tls13_kem_groups[i]->iana_id) {
return true;
}
}
return false;
}
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