sha256.h File Reference

SHA256 hash implementation and interface functions. More...

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Defines
#define	SHA256_MAC_LEN   32
Functions
void	hmac_sha256_vector (const u8 *key, size_t key_len, size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
	HMAC-SHA256 over data vector (RFC 2104).
void	hmac_sha256 (const u8 *key, size_t key_len, const u8 *data, size_t data_len, u8 *mac)
	HMAC-SHA256 over data buffer (RFC 2104).
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)
	SHA256-based Pseudo-Random Function (IEEE 802.11r, 8.5A.3).

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Detailed Description

SHA256 hash implementation and interface functions.

Copyright

Copyright (c) 2003-2006, Jouni Malinen <[email protected]>

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.

Definition in file sha256.h.

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Function Documentation

void hmac_sha256 (  const u8 *  key, size_t  key_len, const u8 *  data, size_t  data_len, u8 *  mac )

HMAC-SHA256 over data buffer (RFC 2104). Parameters: key  Key for HMAC operations key_len  Length of the key in bytes data  Pointers to the data area data_len  Length of the data area mac  Buffer for the hash (20 bytes) Definition at line 105 of file sha256.c. Here is the call graph for this function:

void hmac_sha256_vector (  const u8 *  key, size_t  key_len, size_t  num_elem, const u8 *  addr[], const size_t *  len, u8 *  mac )

HMAC-SHA256 over data vector (RFC 2104). Parameters: key  Key for HMAC operations key_len  Length of the key in bytes 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 (32 bytes) Definition at line 33 of file sha256.c. Here is the call graph for this function:

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 )

SHA256-based Pseudo-Random Function (IEEE 802.11r, 8.5A.3). Parameters: key  Key for PRF key_len  Length of the key in bytes label  A unique label for each purpose of the PRF data  Extra data to bind into the key data_len  Length of the data buf  Buffer for the generated pseudo-random key buf_len  Number of bytes of key to generate This function is used to derive new, cryptographically separate keys from a given key. Definition at line 126 of file sha256.c. Here is the call graph for this function:

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