aes-omac1.c File Reference

One-key CBC MAC (OMAC1) hash with AES-128. More...

#include "includes.h"
#include "common.h"
#include "aes.h"

Include dependency graph for aes-omac1.c:

Functions
int	omac1_aes_128_vector (const u8 key, size_t num_elem, const u8 addr[], const size_t len, u8 mac)
	One-Key CBC MAC (OMAC1) hash with AES-128.
int	omac1_aes_128 (const u8 key, const u8 data, size_t data_len, u8 *mac)
	One-Key CBC MAC (OMAC1) hash with AES-128 (aka AES-CMAC).

Detailed Description

One-key CBC MAC (OMAC1) hash with AES-128.

Copyright: Copyright (c) 2003-2007, 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.

Definition in file aes-omac1.c.

Function Documentation

int omac1_aes_128	(	const u8 *	key,
		const u8 *	data,
		size_t	data_len,
		u8 *	mac
	)

One-Key CBC MAC (OMAC1) hash with AES-128 (aka AES-CMAC).

Parameters:

	key	128-bit key for the hash operation
	data	Data buffer for which a MAC is determined
	data_len	Length of data buffer in bytes
	mac	Buffer for MAC (128 bits, i.e., 16 bytes)

Returns:: 0 on success, -1 on failure

This is a mode for using block cipher (AES in this case) for authentication. OMAC1 was standardized with the name CMAC by NIST in a Special Publication (SP) 800-38B.

Definition at line 123 of file aes-omac1.c.

Here is the call graph for this function:

int omac1_aes_128_vector	(	const u8 *	key,
		size_t	num_elem,
		const u8 *	addr[],
		const size_t *	len,
		u8 *	mac
	)

One-Key CBC MAC (OMAC1) hash with AES-128.