xtea.h

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#ifndef MBEDTLS_XTEA_H
#define MBEDTLS_XTEA_H

#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif

#include <stddef.h>
#include <stdint.h>

#define MBEDTLS_XTEA_ENCRYPT     1
#define MBEDTLS_XTEA_DECRYPT     0

#define MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH             -0x0028  
#if !defined(MBEDTLS_XTEA_ALT)
// Regular implementation
//

#ifdef __cplusplus
extern "C" {
#endif

typedef struct
{
    uint32_t k[4];       
}
mbedtls_xtea_context;

void mbedtls_xtea_init( mbedtls_xtea_context *ctx );

void mbedtls_xtea_free( mbedtls_xtea_context *ctx );

void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] );

int mbedtls_xtea_crypt_ecb( mbedtls_xtea_context *ctx,
                    int mode,
                    const unsigned char input[8],
                    unsigned char output[8] );

#if defined(MBEDTLS_CIPHER_MODE_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);
#endif /* MBEDTLS_CIPHER_MODE_CBC */

#ifdef __cplusplus
}
#endif

#else  /* MBEDTLS_XTEA_ALT */
#include "xtea_alt.h"
#endif /* MBEDTLS_XTEA_ALT */

#ifdef __cplusplus
extern "C" {
#endif

int mbedtls_xtea_self_test( int verbose );

#ifdef __cplusplus
}
#endif

#endif /* xtea.h */