arduino-esp32/tools/sdk/include/lwip/netif/ppp/polarssl/arc4.h

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2016-10-06 13:21:30 +02:00
/**
* \file arc4.h
*
* Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
*
* Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the names of PolarSSL or XySSL nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "netif/ppp/ppp_opts.h"
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#if LWIP_INCLUDED_POLARSSL_ARC4
#ifndef LWIP_INCLUDED_POLARSSL_ARC4_H
#define LWIP_INCLUDED_POLARSSL_ARC4_H
/**
* \brief ARC4 context structure
*/
typedef struct
{
int x; /*!< permutation index */
int y; /*!< permutation index */
unsigned char m[256]; /*!< permutation table */
}
arc4_context;
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief ARC4 key schedule
*
* \param ctx ARC4 context to be initialized
* \param key the secret key
* \param keylen length of the key
*/
void arc4_setup( arc4_context *ctx, unsigned char *key, int keylen );
/**
* \brief ARC4 cipher function
*
* \param ctx ARC4 context
* \param buf buffer to be processed
* \param buflen amount of data in buf
*/
void arc4_crypt( arc4_context *ctx, unsigned char *buf, int buflen );
#ifdef __cplusplus
}
#endif
#endif /* LWIP_INCLUDED_POLARSSL_ARC4_H */
#endif /* LWIP_INCLUDED_POLARSSL_ARC4 */