/** * @file des.h * @brief DES (Data Encryption Standard) * * @section License * * SPDX-License-Identifier: GPL-2.0-or-later * * Copyright (C) 2010-2023 Oryx Embedded SARL. All rights reserved. * * This file is part of CycloneCRYPTO Open. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * @author Oryx Embedded SARL (www.oryx-embedded.com) * @version 2.2.4 **/ #ifndef _DES_H #define _DES_H //Dependencies #include "core/crypto.h" //Application specific context #ifndef DES_PRIVATE_CONTEXT #define DES_PRIVATE_CONTEXT #endif //DES block size #define DES_BLOCK_SIZE 8 //Common interface for encryption algorithms #define DES_CIPHER_ALGO (&desCipherAlgo) //C++ guard #ifdef __cplusplus extern "C" { #endif /** * @brief DES algorithm context **/ typedef struct { uint32_t ks[32]; DES_PRIVATE_CONTEXT } DesContext; //DES related constants extern const CipherAlgo desCipherAlgo; //DES related functions error_t desInit(DesContext *context, const uint8_t *key, size_t keyLen); void desEncryptBlock(DesContext *context, const uint8_t *input, uint8_t *output); void desDecryptBlock(DesContext *context, const uint8_t *input, uint8_t *output); void desDeinit(DesContext *context); //C++ guard #ifdef __cplusplus } #endif #endif