4 * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
6 * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
14 * * Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * * Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * * Neither the names of PolarSSL or XySSL nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
26 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 #include "netif/ppp/ppp_opts.h"
37 #if LWIP_INCLUDED_POLARSSL_ARC4
39 #ifndef LWIP_INCLUDED_POLARSSL_ARC4_H
40 #define LWIP_INCLUDED_POLARSSL_ARC4_H
43 * \brief ARC4 context structure
47 int x; /*!< permutation index */
48 int y; /*!< permutation index */
49 unsigned char m[256]; /*!< permutation table */
58 * \brief ARC4 key schedule
60 * \param ctx ARC4 context to be initialized
61 * \param key the secret key
62 * \param keylen length of the key
64 void arc4_setup( arc4_context *ctx, unsigned char *key, int keylen );
67 * \brief ARC4 cipher function
69 * \param ctx ARC4 context
70 * \param buf buffer to be processed
71 * \param buflen amount of data in buf
73 void arc4_crypt( arc4_context *ctx, unsigned char *buf, int buflen );
79 #endif /* LWIP_INCLUDED_POLARSSL_ARC4_H */
81 #endif /* LWIP_INCLUDED_POLARSSL_ARC4 */