sha256.c File Reference

SHA-256 hash implementation and interface functions. More...

#include "includes.h"
#include "common.h"
#include "sha256.h"
#include "crypto.h"

Functions
int	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) More...
int	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) More...

Detailed Description

SHA-256 hash implementation and interface functions.

Function Documentation

int 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 (32 bytes)

Returns

0 on success, -1 on failure

int 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)

Returns

0 on success, -1 on failure