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
14int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
15		       const u8 *addr[], const size_t *len, u8 *mac);
16int hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
17		size_t data_len, u8 *mac);
18int 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);
20int 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);
23void 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);
26int 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