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74 lines
1.7 KiB
74 lines
1.7 KiB
15 years ago
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/* This file is part of the KDE project
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Copyright (C) 2001 George Staikos <staikos@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef _BLOWFISH_H
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#define _BLOWFISH_H
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#include <config.h>
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_BITYPES_H
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#include <sys/bitypes.h> /* For uintXX_t on Tru64 */
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#endif
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#include "blockcipher.h"
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/* @internal
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*/
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class BlowFish : public BlockCipher {
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public:
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BlowFish();
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virtual ~BlowFish();
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virtual bool setKey(void *key, int bitlength);
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virtual int keyLen() const;
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virtual bool variableKeyLen() const;
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virtual bool readyToGo() const;
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virtual int encrypt(void *block, int len);
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virtual int decrypt(void *block, int len);
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private:
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uint32_t _S[4][256];
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uint32_t _P[18];
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void *_key;
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int _keylen; // in bits
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bool _init;
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bool init();
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uint32_t F(uint32_t x);
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void encipher(uint32_t *xl, uint32_t *xr);
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void decipher(uint32_t *xl, uint32_t *xr);
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};
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#endif
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