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/**
* This file is part of Hercules.
* http://herc.ws - http://github.com/HerculesWS/Hercules
*
* Copyright (C) 2012-2020 Hercules Dev Team
* Copyright (C) Athena Dev Teams
*
* Hercules 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef COMMON_DES_H
#define COMMON_DES_H
#include "common/hercules.h"
/**
* @file
*
* DES (Data Encryption Standard) algorithm, modified version.
*
* @see http://www.eathena.ws/board/index.php?autocom=bugtracker&showbug=5099
* @see http://en.wikipedia.org/wiki/Data_Encryption_Standard
* @see http://en.wikipedia.org/wiki/DES_supplementary_material
*/
/* Struct definitions */
/// One 64-bit block.
struct des_bit64 {
uint8_t b[8];
};
/* Interface */
/// The des interface.
struct des_interface {
/**
* Decrypts a block.
*
* @param[in,out] block The block to decrypt (in-place).
*/
void (*decrypt_block) (struct des_bit64 *block);
/**
* Decrypts a buffer.
*
* @param [in,out] data The buffer to decrypt (in-place).
* @param [in] size The size of the data.
*/
void (*decrypt) (unsigned char *data, size_t size);
};
#ifdef HERCULES_CORE
void des_defaults(void);
#endif // HERCULES_CORE
HPShared struct des_interface *des; ///< Pointer to the des interface implementation.
#endif // COMMON_DES_H
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