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/* This file is part of the KDE project
Copyright (C) 2001 George Staikos <staikos@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef _BLOWFISH_H
#define _BLOWFISH_H
#include <config.h>
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_BITYPES_H
#include <sys/bitypes.h> /* For uintXX_t on Tru64 */
#endif
#include "blockcipher.h"
/* @internal
*/
class BlowFish : public BlockCipher {
public:
BlowFish();
virtual ~BlowFish();
virtual bool setKey(void *key, int bitlength);
virtual int keyLen() const;
virtual bool variableKeyLen() const;
virtual bool readyToGo() const;
virtual int encrypt(void *block, int len);
virtual int decrypt(void *block, int len);
private:
uint32_t _S[4][256];
uint32_t _P[18];
void *_key;
int _keylen; // in bits
bool _init;
bool init();
uint32_t F(uint32_t x);
void encipher(uint32_t *xl, uint32_t *xr);
void decipher(uint32_t *xl, uint32_t *xr);
};
#endif
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