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8ae5b576 | 1 | /* arcfour.h |
90112edb NM |
2 | |
3 | The arcfour/rc4 stream cipher. | |
4 | ||
5 | Copyright (C) 2001, 2014 Niels Möller | |
6 | ||
7 | This file is part of GNU Nettle. | |
8 | ||
9 | GNU Nettle is free software: you can redistribute it and/or | |
10 | modify it under the terms of either: | |
11 | ||
12 | * the GNU Lesser General Public License as published by the Free | |
13 | Software Foundation; either version 3 of the License, or (at your | |
14 | option) any later version. | |
15 | ||
16 | or | |
17 | ||
18 | * the GNU General Public License as published by the Free | |
19 | Software Foundation; either version 2 of the License, or (at your | |
20 | option) any later version. | |
21 | ||
22 | or both in parallel, as here. | |
23 | ||
24 | GNU Nettle is distributed in the hope that it will be useful, | |
25 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
27 | General Public License for more details. | |
28 | ||
29 | You should have received copies of the GNU General Public License and | |
30 | the GNU Lesser General Public License along with this program. If | |
31 | not, see http://www.gnu.org/licenses/. | |
32 | */ | |
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33 | |
34 | #ifndef NETTLE_ARCFOUR_H_INCLUDED | |
35 | #define NETTLE_ARCFOUR_H_INCLUDED | |
36 | ||
121313f4 | 37 | #include "nettle-types.h" |
8ae5b576 | 38 | |
82cb285e NM |
39 | #ifdef __cplusplus |
40 | extern "C" { | |
41 | #endif | |
42 | ||
4fd20960 | 43 | /* Name mangling */ |
58785537 | 44 | #define arcfour128_set_key nettle_arcfour128_set_key |
4fd20960 NM |
45 | #define arcfour_set_key nettle_arcfour_set_key |
46 | #define arcfour_crypt nettle_arcfour_crypt | |
4fd20960 | 47 | |
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48 | /* Minimum and maximum keysizes, and a reasonable default. In |
49 | * octets.*/ | |
50 | #define ARCFOUR_MIN_KEY_SIZE 1 | |
51 | #define ARCFOUR_MAX_KEY_SIZE 256 | |
52 | #define ARCFOUR_KEY_SIZE 16 | |
58785537 | 53 | #define ARCFOUR128_KEY_SIZE 16 |
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54 | |
55 | struct arcfour_ctx | |
56 | { | |
57 | uint8_t S[256]; | |
58 | uint8_t i; | |
59 | uint8_t j; | |
60 | }; | |
61 | ||
62 | void | |
63 | arcfour_set_key(struct arcfour_ctx *ctx, | |
3eb603d0 | 64 | size_t length, const uint8_t *key); |
8ae5b576 | 65 | |
58785537 NM |
66 | void |
67 | arcfour128_set_key(struct arcfour_ctx *ctx, const uint8_t *key); | |
68 | ||
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69 | void |
70 | arcfour_crypt(struct arcfour_ctx *ctx, | |
3eb603d0 | 71 | size_t length, uint8_t *dst, |
8ae5b576 NM |
72 | const uint8_t *src); |
73 | ||
82cb285e NM |
74 | #ifdef __cplusplus |
75 | } | |
76 | #endif | |
77 | ||
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78 | #endif /* NETTLE_ARCFOUR_H_INCLUDED */ |
79 |