reactos/include/reactos/libs/mbedtls/arc4.h

   1 /**
   2  * \file arc4.h
   3  *
   4  * \brief The ARCFOUR stream cipher
   5  *
   6  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
   7  *  SPDX-License-Identifier: Apache-2.0
   8  *
   9  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
  10  *  not use this file except in compliance with the License.
  11  *  You may obtain a copy of the License at
  12  *
  13  *  http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  *  Unless required by applicable law or agreed to in writing, software
  16  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  17  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  *  See the License for the specific language governing permissions and
  19  *  limitations under the License.
  20  *
  21  *  This file is part of mbed TLS (https://tls.mbed.org)
  22  */
  23 #ifndef MBEDTLS_ARC4_H
  24 #define MBEDTLS_ARC4_H
  25
  26 #if !defined(MBEDTLS_CONFIG_FILE)
  27 #include "config.h"
  28 #else
  29 #include MBEDTLS_CONFIG_FILE
  30 #endif
  31
  32 #include <stddef.h>
  33
  34 #if !defined(MBEDTLS_ARC4_ALT)
  35 // Regular implementation
  36 //
  37
  38 #ifdef __cplusplus
  39 extern "C" {
  40 #endif
  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 mbedtls_arc4_context;
  52
  53 /**
  54  * \brief          Initialize ARC4 context
  55  *
  56  * \param ctx      ARC4 context to be initialized
  57  */
  58 void mbedtls_arc4_init( mbedtls_arc4_context *ctx );
  59
  60 /**
  61  * \brief          Clear ARC4 context
  62  *
  63  * \param ctx      ARC4 context to be cleared
  64  */
  65 void mbedtls_arc4_free( mbedtls_arc4_context *ctx );
  66
  67 /**
  68  * \brief          ARC4 key schedule
  69  *
  70  * \param ctx      ARC4 context to be setup
  71  * \param key      the secret key
  72  * \param keylen   length of the key, in bytes
  73  */
  74 void mbedtls_arc4_setup( mbedtls_arc4_context *ctx, const unsigned char *key,
  75                  unsigned int keylen );
  76
  77 /**
  78  * \brief          ARC4 cipher function
  79  *
  80  * \param ctx      ARC4 context
  81  * \param length   length of the input data
  82  * \param input    buffer holding the input data
  83  * \param output   buffer for the output data
  84  *
  85  * \return         0 if successful
  86  */
  87 int mbedtls_arc4_crypt( mbedtls_arc4_context *ctx, size_t length, const unsigned char *input,
  88                 unsigned char *output );
  89
  90 #ifdef __cplusplus
  91 }
  92 #endif
  93
  94 #else  /* MBEDTLS_ARC4_ALT */
  95 #include "arc4_alt.h"
  96 #endif /* MBEDTLS_ARC4_ALT */
  97
  98 #ifdef __cplusplus
  99 extern "C" {
 100 #endif
 101
 102 /**
 103  * \brief          Checkup routine
 104  *
 105  * \return         0 if successful, or 1 if the test failed
 106  */
 107 int mbedtls_arc4_self_test( int verbose );
 108
 109 #ifdef __cplusplus
 110 }
 111 #endif
 112
 113 #endif /* arc4.h */