1 /* 2 * SHA256 hash implementation and interface functions 3 * Copyright (c) 2003-2016, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #ifndef SHA256_H 10 #define SHA256_H 11 12 #define SHA256_MAC_LEN 32 13 14 int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem, 15 const u8 *addr[], const size_t *len, u8 *mac); 16 int hmac_sha256(const u8 *key, size_t key_len, const u8 *data, 17 size_t data_len, u8 *mac); 18 int sha256_prf(const u8 *key, size_t key_len, const char *label, 19 const u8 *data, size_t data_len, u8 *buf, size_t buf_len); 20 int sha256_prf_bits(const u8 *key, size_t key_len, const char *label, 21 const u8 *data, size_t data_len, u8 *buf, 22 size_t buf_len_bits); 23 void tls_prf_sha256(const u8 *secret, size_t secret_len, 24 const char *label, const u8 *seed, size_t seed_len, 25 u8 *out, size_t outlen); 26 int hmac_sha256_kdf(const u8 *secret, size_t secret_len, 27 const char *label, const u8 *seed, size_t seed_len, 28 u8 *out, size_t outlen); 29 30 #endif /* SHA256_H */ 31