rc4.hh

COPE the first practical network coding scheme which is developped on click

/* -*- related-file-name: "../../lib/rc4.c" -*- */
/*
 * rc4.h
 *
 * Copyright (c) 1996-2000 Whistle Communications, Inc.
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 *    such appears in the above copyright notice or in the software.
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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 1.1.1.1 2006/10/16 18:09:09 sachin 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