1 /* 2 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"). 5 * You may not use this file except in compliance with the License. 6 * A copy of the License is located at 7 * 8 * http://aws.amazon.com/apache2.0 9 * 10 * or in the "license" file accompanying this file. This file is distributed 11 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 12 * express or implied. See the License for the specific language governing 13 * permissions and limitations under the License. 14 */ 15 16 #pragma once 17 18 #define S2N_TLS_SECRET_LEN 48 19 #define S2N_TLS_RANDOM_DATA_LEN 32 20 #define S2N_TLS_SEQUENCE_NUM_LEN 8 21 #define S2N_TLS_CIPHER_SUITE_LEN 2 22 #define S2N_SSLv2_CIPHER_SUITE_LEN 3 23 #define S2N_TLS_FINISHED_LEN 12 24 #define S2N_SSL_FINISHED_LEN 36 25 #define S2N_TLS_MAX_IV_LEN 16 26 27 /* From RFC 5246 6.2.3.3 */ 28 #define S2N_TLS12_AAD_LEN 13 29 #define S2N_TLS_MAX_AAD_LEN S2N_TLS12_AAD_LEN 30 #define S2N_TLS_GCM_FIXED_IV_LEN 4 31 #define S2N_TLS_GCM_EXPLICIT_IV_LEN 8 32 #define S2N_TLS_GCM_IV_LEN (S2N_TLS_GCM_FIXED_IV_LEN + S2N_TLS_GCM_EXPLICIT_IV_LEN) 33 #define S2N_TLS_GCM_TAG_LEN 16 34 #define S2N_TLS_AES_128_GCM_KEY_LEN 16 35 #define S2N_TLS_AES_256_GCM_KEY_LEN 32 36 37 /* TLS 1.3 uses only implicit IVs - RFC 8446 5.3 */ 38 #define S2N_TLS13_AAD_LEN 5 39 #define S2N_TLS13_RECORD_IV_LEN 0 40 #define S2N_TLS13_FIXED_IV_LEN 12 41 42 /* From RFC 7905 */ 43 #define S2N_TLS_CHACHA20_POLY1305_FIXED_IV_LEN 12 44 #define S2N_TLS_CHACHA20_POLY1305_EXPLICIT_IV_LEN 0 45 #define S2N_TLS_CHACHA20_POLY1305_IV_LEN 12 46 #define S2N_TLS_CHACHA20_POLY1305_KEY_LEN 32 47 #define S2N_TLS_CHACHA20_POLY1305_TAG_LEN 16 48 49 /* RFC 5246 7.4.1.2 */ 50 #define S2N_TLS_SESSION_ID_MAX_LEN 32 51