/* -*- related-file-name: "../../lib/rc4.c" -*- */
/*
 * rc4.h
 *
 * Copyright (c) 1996-2000 Whistle Communications, Inc.
 * All rights reserved.
 * 
 * Subject to the following obligations and disclaimer of warranty, use and
 * redistribution of this software, in source or object code forms, with or
 * without modifications are expressly permitted by Whistle Communications;
 * provided, however, that:
 * 1. Any and all reproductions of the source or object code must include the
 *    copyright notice above and the following disclaimer of warranties; and
 * 2. No rights are granted, in any manner or form, to use Whistle
 *    Communications, Inc. trademarks, including the mark "WHISTLE
 *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
 *    such appears in the above copyright notice or in the software.
 * 
 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
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 * $FreeBSD: src/sys/crypto/rc4/rc4.h,v 1.3 2000/07/16 05:53:14 peter Exp $
 * $Id: rc4.hh,v 1.2 2005/01/06 23:04:00 jbicket Exp $
 */

#ifndef CLICK_RC4
#define CLICK_RC4

#include <click/config.h>
struct rc4_state {
	unsigned char	perm[256];
	unsigned char	index1;
	unsigned char	index2;
};

extern void rc4_init(struct rc4_state *state, const unsigned char *key, int keylen);
extern void rc4_crypt_skip(struct rc4_state *state,
		const unsigned char *inbuf, unsigned char *outbuf, int buflen, int skip);


extern u_int32_t rfc_2083_crc_update(u_int32_t crc, u_int8_t *buf, int len);

#endif