1 | /**
|
---|
2 | * \file arc4.h
|
---|
3 | *
|
---|
4 | * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
|
---|
5 | *
|
---|
6 | * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
|
---|
7 | *
|
---|
8 | * All rights reserved.
|
---|
9 | *
|
---|
10 | * Redistribution and use in source and binary forms, with or without
|
---|
11 | * modification, are permitted provided that the following conditions
|
---|
12 | * are met:
|
---|
13 | *
|
---|
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.
|
---|
22 | *
|
---|
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
|
---|
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
---|
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
---|
34 | */
|
---|
35 |
|
---|
36 | #include "netif/ppp/ppp_opts.h"
|
---|
37 | #if LWIP_INCLUDED_POLARSSL_ARC4
|
---|
38 |
|
---|
39 | #ifndef LWIP_INCLUDED_POLARSSL_ARC4_H
|
---|
40 | #define LWIP_INCLUDED_POLARSSL_ARC4_H
|
---|
41 |
|
---|
42 | /**
|
---|
43 | * \brief ARC4 context structure
|
---|
44 | */
|
---|
45 | typedef struct
|
---|
46 | {
|
---|
47 | int x; /*!< permutation index */
|
---|
48 | int y; /*!< permutation index */
|
---|
49 | unsigned char m[256]; /*!< permutation table */
|
---|
50 | }
|
---|
51 | arc4_context;
|
---|
52 |
|
---|
53 | #ifdef __cplusplus
|
---|
54 | extern "C" {
|
---|
55 | #endif
|
---|
56 |
|
---|
57 | /**
|
---|
58 | * \brief ARC4 key schedule
|
---|
59 | *
|
---|
60 | * \param ctx ARC4 context to be initialized
|
---|
61 | * \param key the secret key
|
---|
62 | * \param keylen length of the key
|
---|
63 | */
|
---|
64 | void arc4_setup( arc4_context *ctx, unsigned char *key, int keylen );
|
---|
65 |
|
---|
66 | /**
|
---|
67 | * \brief ARC4 cipher function
|
---|
68 | *
|
---|
69 | * \param ctx ARC4 context
|
---|
70 | * \param buf buffer to be processed
|
---|
71 | * \param buflen amount of data in buf
|
---|
72 | */
|
---|
73 | void arc4_crypt( arc4_context *ctx, unsigned char *buf, int buflen );
|
---|
74 |
|
---|
75 | #ifdef __cplusplus
|
---|
76 | }
|
---|
77 | #endif
|
---|
78 |
|
---|
79 | #endif /* LWIP_INCLUDED_POLARSSL_ARC4_H */
|
---|
80 |
|
---|
81 | #endif /* LWIP_INCLUDED_POLARSSL_ARC4 */
|
---|