mbed TLS Build
include/mbedtls/xtea.h
- Committer:
- markrad
- Date:
- 2017-01-05
- Revision:
- 0:cdf462088d13
File content as of revision 0:cdf462088d13:
/** * \file xtea.h * * \brief XTEA block cipher (32-bit) * * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * This file is part of mbed TLS (https://tls.mbed.org) */ #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 /**< The data input has an invalid length. */ #if !defined(MBEDTLS_XTEA_ALT) // Regular implementation // #ifdef __cplusplus extern "C" { #endif /** * \brief XTEA context structure */ typedef struct { uint32_t k[4]; /*!< key */ } mbedtls_xtea_context; /** * \brief Initialize XTEA context * * \param ctx XTEA context to be initialized */ void mbedtls_xtea_init( mbedtls_xtea_context *ctx ); /** * \brief Clear XTEA context * * \param ctx XTEA context to be cleared */ void mbedtls_xtea_free( mbedtls_xtea_context *ctx ); /** * \brief XTEA key schedule * * \param ctx XTEA context to be initialized * \param key the secret key */ void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] ); /** * \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 */ 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) /** * \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 */ 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 /** * \brief Checkup routine * * \return 0 if successful, or 1 if the test failed */ int mbedtls_xtea_self_test( int verbose ); #ifdef __cplusplus } #endif #endif /* xtea.h */