reactos/sdk/include/reactos/libs/mbedtls/xtea.h

   1 /**
   2  * \file xtea.h
   3  *
   4  * \brief XTEA block cipher (32-bit)
   5  *
   6  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
   7  *  SPDX-License-Identifier: GPL-2.0
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License along
  20  *  with this program; if not, write to the Free Software Foundation, Inc.,
  21  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  22  *
  23  *  This file is part of mbed TLS (https://tls.mbed.org)
  24  */
  25 #ifndef MBEDTLS_XTEA_H
  26 #define MBEDTLS_XTEA_H
  27
  28 #if !defined(MBEDTLS_CONFIG_FILE)
  29 #include "config.h"
  30 #else
  31 #include MBEDTLS_CONFIG_FILE
  32 #endif
  33
  34 #include <stddef.h>
  35 #include <stdint.h>
  36
  37 #define MBEDTLS_XTEA_ENCRYPT     1
  38 #define MBEDTLS_XTEA_DECRYPT     0
  39
  40 #define MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH             -0x0028  /**< The data input has an invalid length. */
  41
  42 #if !defined(MBEDTLS_XTEA_ALT)
  43 // Regular implementation
  44 //
  45
  46 #ifdef __cplusplus
  47 extern "C" {
  48 #endif
  49
  50 /**
  51  * \brief          XTEA context structure
  52  */
  53 typedef struct
  54 {
  55     uint32_t k[4];       /*!< key */
  56 }
  57 mbedtls_xtea_context;
  58
  59 /**
  60  * \brief          Initialize XTEA context
  61  *
  62  * \param ctx      XTEA context to be initialized
  63  */
  64 void mbedtls_xtea_init( mbedtls_xtea_context *ctx );
  65
  66 /**
  67  * \brief          Clear XTEA context
  68  *
  69  * \param ctx      XTEA context to be cleared
  70  */
  71 void mbedtls_xtea_free( mbedtls_xtea_context *ctx );
  72
  73 /**
  74  * \brief          XTEA key schedule
  75  *
  76  * \param ctx      XTEA context to be initialized
  77  * \param key      the secret key
  78  */
  79 void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] );
  80
  81 /**
  82  * \brief          XTEA cipher function
  83  *
  84  * \param ctx      XTEA context
  85  * \param mode     MBEDTLS_XTEA_ENCRYPT or MBEDTLS_XTEA_DECRYPT
  86  * \param input    8-byte input block
  87  * \param output   8-byte output block
  88  *
  89  * \return         0 if successful
  90  */
  91 int mbedtls_xtea_crypt_ecb( mbedtls_xtea_context *ctx,
  92                     int mode,
  93                     const unsigned char input[8],
  94                     unsigned char output[8] );
  95
  96 #if defined(MBEDTLS_CIPHER_MODE_CBC)
  97 /**
  98  * \brief          XTEA CBC cipher function
  99  *
 100  * \param ctx      XTEA context
 101  * \param mode     MBEDTLS_XTEA_ENCRYPT or MBEDTLS_XTEA_DECRYPT
 102  * \param length   the length of input, multiple of 8
 103  * \param iv       initialization vector for CBC mode
 104  * \param input    input block
 105  * \param output   output block
 106  *
 107  * \return         0 if successful,
 108  *                 MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH if the length % 8 != 0
 109  */
 110 int mbedtls_xtea_crypt_cbc( mbedtls_xtea_context *ctx,
 111                     int mode,
 112                     size_t length,
 113                     unsigned char iv[8],
 114                     const unsigned char *input,
 115                     unsigned char *output);
 116 #endif /* MBEDTLS_CIPHER_MODE_CBC */
 117
 118 #ifdef __cplusplus
 119 }
 120 #endif
 121
 122 #else  /* MBEDTLS_XTEA_ALT */
 123 #include "xtea_alt.h"
 124 #endif /* MBEDTLS_XTEA_ALT */
 125
 126 #ifdef __cplusplus
 127 extern "C" {
 128 #endif
 129
 130 /**
 131  * \brief          Checkup routine
 132  *
 133  * \return         0 if successful, or 1 if the test failed
 134  */
 135 int mbedtls_xtea_self_test( int verbose );
 136
 137 #ifdef __cplusplus
 138 }
 139 #endif
 140
 141 #endif /* xtea.h */