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- /*
- * SHA256 hash implementation and interface functions
- * Copyright (c) 2003-2006, Jouni Malinen <j@w1.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
- */
- #ifndef SHA256_H
- #define SHA256_H
- #include "common.h"
- #include "os.h"
- #define SHA256_MAC_LEN 32
- #define SHA256_BLOCK_SIZE 64
- struct sha256_state {
- u64 length;
- u32 state[8], curlen;
- u8 buf[SHA256_BLOCK_SIZE];
- };
- void sha256_init(struct sha256_state *md);
- int sha256_process(struct sha256_state *md, const unsigned char *in,
- unsigned long inlen);
- int sha256_done(struct sha256_state *md, unsigned char *out);
- /**
- * sha256_vector - SHA256 hash for data vector
- * @num_elem: Number of elements in the data vector
- * @addr: Pointers to the data areas
- * @len: Lengths of the data blocks
- * @mac: Buffer for the hash
- * Returns: 0 on success, -1 on failure
- */
- int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
- u8 *mac);
- void hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
- const u8 *addr[], const size_t *len, u8 *mac);
- void hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
- size_t data_len, u8 *mac);
- void sha256_prf(const u8 *key, size_t key_len, const char *label,
- const u8 *data, size_t data_len, u8 *buf, size_t buf_len);
- #endif /* SHA256_H */
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