mbed TLS library
Dependents: HTTPClient-SSL WS_SERVER
include/polarssl/arc4.h@0:137634ff4186, 2015-06-11 (annotated)
- Committer:
- ansond
- Date:
- Thu Jun 11 03:27:03 2015 +0000
- Revision:
- 0:137634ff4186
initial commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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ansond | 0:137634ff4186 | 1 | /** |
ansond | 0:137634ff4186 | 2 | * \file arc4.h |
ansond | 0:137634ff4186 | 3 | * |
ansond | 0:137634ff4186 | 4 | * \brief The ARCFOUR stream cipher |
ansond | 0:137634ff4186 | 5 | * |
ansond | 0:137634ff4186 | 6 | * Copyright (C) 2006-2014, ARM Limited, All Rights Reserved |
ansond | 0:137634ff4186 | 7 | * |
ansond | 0:137634ff4186 | 8 | * This file is part of mbed TLS (https://tls.mbed.org) |
ansond | 0:137634ff4186 | 9 | * |
ansond | 0:137634ff4186 | 10 | * This program is free software; you can redistribute it and/or modify |
ansond | 0:137634ff4186 | 11 | * it under the terms of the GNU General Public License as published by |
ansond | 0:137634ff4186 | 12 | * the Free Software Foundation; either version 2 of the License, or |
ansond | 0:137634ff4186 | 13 | * (at your option) any later version. |
ansond | 0:137634ff4186 | 14 | * |
ansond | 0:137634ff4186 | 15 | * This program is distributed in the hope that it will be useful, |
ansond | 0:137634ff4186 | 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
ansond | 0:137634ff4186 | 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
ansond | 0:137634ff4186 | 18 | * GNU General Public License for more details. |
ansond | 0:137634ff4186 | 19 | * |
ansond | 0:137634ff4186 | 20 | * You should have received a copy of the GNU General Public License along |
ansond | 0:137634ff4186 | 21 | * with this program; if not, write to the Free Software Foundation, Inc., |
ansond | 0:137634ff4186 | 22 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
ansond | 0:137634ff4186 | 23 | */ |
ansond | 0:137634ff4186 | 24 | #ifndef POLARSSL_ARC4_H |
ansond | 0:137634ff4186 | 25 | #define POLARSSL_ARC4_H |
ansond | 0:137634ff4186 | 26 | |
ansond | 0:137634ff4186 | 27 | #if !defined(POLARSSL_CONFIG_FILE) |
ansond | 0:137634ff4186 | 28 | #include "config.h" |
ansond | 0:137634ff4186 | 29 | #else |
ansond | 0:137634ff4186 | 30 | #include POLARSSL_CONFIG_FILE |
ansond | 0:137634ff4186 | 31 | #endif |
ansond | 0:137634ff4186 | 32 | |
ansond | 0:137634ff4186 | 33 | #include <stddef.h> |
ansond | 0:137634ff4186 | 34 | |
ansond | 0:137634ff4186 | 35 | #if !defined(POLARSSL_ARC4_ALT) |
ansond | 0:137634ff4186 | 36 | // Regular implementation |
ansond | 0:137634ff4186 | 37 | // |
ansond | 0:137634ff4186 | 38 | |
ansond | 0:137634ff4186 | 39 | #ifdef __cplusplus |
ansond | 0:137634ff4186 | 40 | extern "C" { |
ansond | 0:137634ff4186 | 41 | #endif |
ansond | 0:137634ff4186 | 42 | |
ansond | 0:137634ff4186 | 43 | /** |
ansond | 0:137634ff4186 | 44 | * \brief ARC4 context structure |
ansond | 0:137634ff4186 | 45 | */ |
ansond | 0:137634ff4186 | 46 | typedef struct |
ansond | 0:137634ff4186 | 47 | { |
ansond | 0:137634ff4186 | 48 | int x; /*!< permutation index */ |
ansond | 0:137634ff4186 | 49 | int y; /*!< permutation index */ |
ansond | 0:137634ff4186 | 50 | unsigned char m[256]; /*!< permutation table */ |
ansond | 0:137634ff4186 | 51 | } |
ansond | 0:137634ff4186 | 52 | arc4_context; |
ansond | 0:137634ff4186 | 53 | |
ansond | 0:137634ff4186 | 54 | /** |
ansond | 0:137634ff4186 | 55 | * \brief Initialize ARC4 context |
ansond | 0:137634ff4186 | 56 | * |
ansond | 0:137634ff4186 | 57 | * \param ctx ARC4 context to be initialized |
ansond | 0:137634ff4186 | 58 | */ |
ansond | 0:137634ff4186 | 59 | void arc4_init( arc4_context *ctx ); |
ansond | 0:137634ff4186 | 60 | |
ansond | 0:137634ff4186 | 61 | /** |
ansond | 0:137634ff4186 | 62 | * \brief Clear ARC4 context |
ansond | 0:137634ff4186 | 63 | * |
ansond | 0:137634ff4186 | 64 | * \param ctx ARC4 context to be cleared |
ansond | 0:137634ff4186 | 65 | */ |
ansond | 0:137634ff4186 | 66 | void arc4_free( arc4_context *ctx ); |
ansond | 0:137634ff4186 | 67 | |
ansond | 0:137634ff4186 | 68 | /** |
ansond | 0:137634ff4186 | 69 | * \brief ARC4 key schedule |
ansond | 0:137634ff4186 | 70 | * |
ansond | 0:137634ff4186 | 71 | * \param ctx ARC4 context to be setup |
ansond | 0:137634ff4186 | 72 | * \param key the secret key |
ansond | 0:137634ff4186 | 73 | * \param keylen length of the key, in bytes |
ansond | 0:137634ff4186 | 74 | */ |
ansond | 0:137634ff4186 | 75 | void arc4_setup( arc4_context *ctx, const unsigned char *key, |
ansond | 0:137634ff4186 | 76 | unsigned int keylen ); |
ansond | 0:137634ff4186 | 77 | |
ansond | 0:137634ff4186 | 78 | /** |
ansond | 0:137634ff4186 | 79 | * \brief ARC4 cipher function |
ansond | 0:137634ff4186 | 80 | * |
ansond | 0:137634ff4186 | 81 | * \param ctx ARC4 context |
ansond | 0:137634ff4186 | 82 | * \param length length of the input data |
ansond | 0:137634ff4186 | 83 | * \param input buffer holding the input data |
ansond | 0:137634ff4186 | 84 | * \param output buffer for the output data |
ansond | 0:137634ff4186 | 85 | * |
ansond | 0:137634ff4186 | 86 | * \return 0 if successful |
ansond | 0:137634ff4186 | 87 | */ |
ansond | 0:137634ff4186 | 88 | int arc4_crypt( arc4_context *ctx, size_t length, const unsigned char *input, |
ansond | 0:137634ff4186 | 89 | unsigned char *output ); |
ansond | 0:137634ff4186 | 90 | |
ansond | 0:137634ff4186 | 91 | #ifdef __cplusplus |
ansond | 0:137634ff4186 | 92 | } |
ansond | 0:137634ff4186 | 93 | #endif |
ansond | 0:137634ff4186 | 94 | |
ansond | 0:137634ff4186 | 95 | #else /* POLARSSL_ARC4_ALT */ |
ansond | 0:137634ff4186 | 96 | #include "arc4_alt.h" |
ansond | 0:137634ff4186 | 97 | #endif /* POLARSSL_ARC4_ALT */ |
ansond | 0:137634ff4186 | 98 | |
ansond | 0:137634ff4186 | 99 | #ifdef __cplusplus |
ansond | 0:137634ff4186 | 100 | extern "C" { |
ansond | 0:137634ff4186 | 101 | #endif |
ansond | 0:137634ff4186 | 102 | |
ansond | 0:137634ff4186 | 103 | /** |
ansond | 0:137634ff4186 | 104 | * \brief Checkup routine |
ansond | 0:137634ff4186 | 105 | * |
ansond | 0:137634ff4186 | 106 | * \return 0 if successful, or 1 if the test failed |
ansond | 0:137634ff4186 | 107 | */ |
ansond | 0:137634ff4186 | 108 | int arc4_self_test( int verbose ); |
ansond | 0:137634ff4186 | 109 | |
ansond | 0:137634ff4186 | 110 | #ifdef __cplusplus |
ansond | 0:137634ff4186 | 111 | } |
ansond | 0:137634ff4186 | 112 | #endif |
ansond | 0:137634ff4186 | 113 | |
ansond | 0:137634ff4186 | 114 | #endif /* arc4.h */ |
ansond | 0:137634ff4186 | 115 |