1 /* 2 Copyright (c) 2021 Fraunhofer AISEC. See the COPYRIGHT 3 file at the top-level directory of this distribution. 4 5 Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or 6 http://www.apache.org/licenses/LICENSE-2.0> or the MIT license 7 <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your 8 option. This file may not be copied, modified, or distributed 9 except according to those terms. 10 */ 11 #ifndef SUITES_H 12 #define SUITES_H 13 14 #include <stdint.h> 15 16 #include "common/oscore_edhoc_error.h" 17 18 /*see https://www.iana.org/assignments/cose/cose.xhtml#algorithms for algorithm number reference*/ 19 20 enum suite_label { 21 SUITE_0 = 0, 22 SUITE_1 = 1, 23 SUITE_2 = 2, 24 SUITE_3 = 3, 25 }; 26 27 enum aead_alg { 28 AES_CCM_16_64_128 = 10, 29 AES_CCM_16_128_128 = 30, 30 }; 31 32 enum hash_alg { SHA_256 = -16 }; 33 34 enum ecdh_alg { 35 P256 = 1, 36 X25519 = 4, 37 }; 38 39 enum sign_alg { 40 ES256 = -7, 41 EdDSA = -8, 42 }; 43 44 enum mac_len { 45 MAC8 = 8, 46 MAC16 = 16, 47 }; 48 49 struct suite { 50 enum suite_label suite_label; 51 enum aead_alg edhoc_aead; 52 enum hash_alg edhoc_hash; 53 enum mac_len edhoc_mac_len_static_dh; 54 enum ecdh_alg edhoc_ecdh; 55 enum sign_alg edhoc_sign; 56 enum aead_alg app_aead; 57 enum hash_alg app_hash; 58 }; 59 60 /** 61 * @brief retrieves the algorithms coresponding to a given suite label 62 * @param label the suite label 63 * @param suite the algorithms coresponding to label 64 */ 65 enum err get_suite(enum suite_label label, struct suite *suite); 66 67 /** 68 * 69 * 70 */ 71 uint32_t get_hash_len(enum hash_alg alg); 72 73 /** 74 * 75 * 76 */ 77 uint32_t get_aead_mac_len(enum aead_alg alg); 78 uint32_t get_aead_key_len(enum aead_alg alg); 79 uint32_t get_aead_iv_len(enum aead_alg alg); 80 uint32_t get_signature_len(enum sign_alg alg); 81 uint32_t get_ecdh_pk_len(enum ecdh_alg alg); 82 #endif 83
