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      1 /*
      2  * SHA256 hash implementation and interface functions
      3  * Copyright (c) 2003-2013, Jouni Malinen <j (at) 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 void 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 void 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 
     27 #endif /* SHA256_H */
     28