arc4.h File Reference

The ARCFOUR stream cipher. More...

#include "config.h"
#include <string.h>

Include dependency graph for arc4.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	arc4_context
	ARC4 context structure. More...
Functions
void	arc4_setup (arc4_context *ctx, const unsigned char *key, unsigned int keylen)
	ARC4 key schedule.
int	arc4_crypt (arc4_context *ctx, size_t length, const unsigned char *input, unsigned char *output)
	ARC4 cipher function.
int	arc4_self_test (int verbose)
	Checkup routine.

---

Detailed Description

The ARCFOUR stream cipher.

Copyright (C) 2006-2013, Brainspark B.V.

This file is part of PolarSSL (http://www.polarssl.org) Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>

All rights reserved.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Definition in file arc4.h.

---

Function Documentation

int arc4_crypt	(	arc4_context *	ctx,
		size_t	length,
		const unsigned char *	input,
		unsigned char *	output
	)

ARC4 cipher function.

Parameters:

	ctx	ARC4 context
	length	length of the input data
	input	buffer holding the input data
	output	buffer for the output data

Returns:

0 if successful

Definition at line 71 of file arc4.c.

References arc4_context::m, arc4_context::x, and arc4_context::y.

Referenced by arc4_crypt_stream_wrap(), arc4_self_test(), and pkcs12_pbe_sha1_rc4_128().

int arc4_self_test

(

int

verbose

)

Checkup routine.

Returns:

0 if successful, or 1 if the test failed

Definition at line 136 of file arc4.c.

References arc4_crypt(), arc4_setup(), arc4_test_ct, arc4_test_key, and arc4_test_pt.

void arc4_setup	(	arc4_context *	ctx,
		const unsigned char *	key,
		unsigned int	keylen
	)

ARC4 key schedule.

Parameters:

	ctx	ARC4 context to be initialized
	key	the secret key
	keylen	length of the key, in bytes

Definition at line 42 of file arc4.c.

References arc4_context::m, arc4_context::x, and arc4_context::y.

Referenced by arc4_self_test(), arc4_setkey_wrap(), and pkcs12_pbe_sha1_rc4_128().