Documentation

Documentation

Includes

config.h

#include "config.h"
#include "config.h"

MBEDTLS_CONFIG_FILE

#include MBEDTLS_CONFIG_FILE
#include MBEDTLS_CONFIG_FILE

stddef.h

#include <stddef.h>
#include 

stdint.h

#include <stdint.h>
#include 

xtea_alt.h

#include "xtea_alt.h"
#include "xtea_alt.h"

Macros

Marco MBEDTLS_XTEA_H

#define MBEDTLS_XTEA_H


      

Marco MBEDTLS_XTEA_ENCRYPT

#define MBEDTLS_XTEA_ENCRYPT    1


      

Marco MBEDTLS_XTEA_DECRYPT

#define MBEDTLS_XTEA_DECRYPT    0


      

Marco MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH

#define MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH            -40 /**< The data input has an invalid length. */


      

Marco MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED

#define MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED                 -41 /**< XTEA hardware accelerator failed. */
/* MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED is deprecated and should not be used. */

Functions

Func mbedtls_xtea_init

void mbedtls_xtea_init( mbedtls_xtea_context *ctx );
/**
 * \brief          Initialize XTEA context
 *
 * \param ctx      XTEA context to be initialized
 */

Func mbedtls_xtea_free

void mbedtls_xtea_free( mbedtls_xtea_context *ctx );
/**
 * \brief          Clear XTEA context
 *
 * \param ctx      XTEA context to be cleared
 */

Func mbedtls_xtea_setup

void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] );
/**
 * \brief          XTEA key schedule
 *
 * \param ctx      XTEA context to be initialized
 * \param key      the secret key
 */

Func mbedtls_xtea_crypt_ecb

int mbedtls_xtea_crypt_ecb( mbedtls_xtea_context *ctx,
                   int mode,
                   const unsigned char input[8],
                   unsigned char output[8] );
/**
 * \brief          XTEA cipher function
 *
 * \param ctx      XTEA context
 * \param mode     MBEDTLS_XTEA_ENCRYPT or MBEDTLS_XTEA_DECRYPT
 * \param input    8-byte input block
 * \param output   8-byte output block
 *
 * \return         0 if successful
 */

Func mbedtls_xtea_crypt_cbc

int mbedtls_xtea_crypt_cbc( mbedtls_xtea_context *ctx,
                   int mode,
                   size_t length,
                   unsigned char iv[8],
                   const unsigned char *input,
                   unsigned char *output);
/**
 * \brief          XTEA CBC cipher function
 *
 * \param ctx      XTEA context
 * \param mode     MBEDTLS_XTEA_ENCRYPT or MBEDTLS_XTEA_DECRYPT
 * \param length   the length of input, multiple of 8
 * \param iv       initialization vector for CBC mode
 * \param input    input block
 * \param output   output block
 *
 * \return         0 if successful,
 *                 MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH if the length % 8 != 0
 */

Func mbedtls_xtea_self_test

int mbedtls_xtea_self_test( int verbose );
/**
 * \brief          Checkup routine
 *
 * \return         0 if successful, or 1 if the test failed
 */

Vars

Consts

Types

Typedefs

Typedef mbedtls_xtea_context;

typedef struct mbedtls_xtea_context
{
   uint32_t k[4];      /*!< key */
}
mbedtls_xtea_context;
/**
 * \brief          XTEA context structure
 */