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 TH_H 12 #define TH_H 13 14 #include "suites.h" 15 #include "c_x.h" 16 17 #include "common/byte_array.h" 18 #include "common/oscore_edhoc_error.h" 19 20 /** 21 * @brief calculates transcript hash th2 22 * @param alg hash algorithm to be used 23 * @param msg1 pointer to a message 1 24 * @param msg1_len length of message 1 25 * @param g_y Pointer to the public DH parameter 26 * @param c_r Pointer to the conception identifier of the responder 27 * @param th2 ouput buffer 28 */ 29 enum err th2_calculate(enum hash_alg alg, uint8_t *msg1, uint32_t msg1_len, 30 uint8_t *g_y, uint32_t g_y_len, struct c_x *c_r, 31 uint8_t *th2); 32 33 /** 34 * @brief calculates transcript hash th3 35 * @param alg hash algorithm to be used 36 * @param th2 pointer to a th2 37 * @param th2_len length of th2 38 * @param ciphertext_2 39 * @param ciphertext_2_len length of ciphertext_2_len 40 * @param th3 ouput buffer 41 */ 42 enum err th3_calculate(enum hash_alg alg, uint8_t *th2, uint32_t th2_len, 43 uint8_t *ciphertext_2, uint32_t ciphertext_2_len, 44 uint8_t *th3); 45 46 /** 47 * @brief calculates transcript hash th4 48 * @param alg hash algorithm to be used 49 * @param th3 pointer to a th3 50 * @param th3_len length of th3 51 * @param ciphertext_3 52 * @param ciphertext_3_len length of ciphertext_3_len 53 * @param th4 ouput buffer 54 */ 55 enum err th4_calculate(enum hash_alg alg, uint8_t *th3, uint32_t th3_len, 56 uint8_t *ciphertext_3, uint32_t ciphertext_3_len, 57 uint8_t *th4); 58 59 #endif 60
