blowfish.h

/*
    This file is part of the KDE project
    SPDX-FileCopyrightText: 2001 George Staikos <staikos@kde.org>
 
    SPDX-License-Identifier: LGPL-2.0-or-later
*/
 
#ifndef _BLOWFISH_H
#define _BLOWFISH_H
 
#include <config-kwalletbackend.h>
 
#if HAVE_STDINT_H
#include <stdint.h>
#endif
#include <sys/types.h>
#if HAVE_SYS_BITYPES_H
#include <sys/bitypes.h> /* For uintXX_t on Tru64 */
#endif
 
#include "blockcipher.h"
#include "kwalletbackend_export.h"
 
/* @internal
 */
class KWALLETBACKEND_EXPORT BlowFish : public BlockCipher
{
public:
    BlowFish();
    ~BlowFish() override;
 
    bool setKey(void *key, int bitlength) override;
 
    int keyLen() const override;
 
    bool variableKeyLen() const override;
 
    bool readyToGo() const override;
 
    int encrypt(void *block, int len) override;
 
    int decrypt(void *block, int len) override;
 
private:
    uint32_t m_S[4][256];
    uint32_t m_P[18];
 
    void *m_key;
    int m_keylen; // in bits
 
    bool m_initialized;
 
    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