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blowfish.h

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#ifndef CRYPTOPP_BLOWFISH_H
#define CRYPTOPP_BLOWFISH_H

#include "cryptlib.h"
#include "misc.h"

NAMESPACE_BEGIN(CryptoPP)

class Blowfish : public FixedBlockSize<8>, public VariableKeyLength<16, 1, 72>
{
public:
        Blowfish(const byte *key_string, unsigned int keylength, CipherDir direction);

        void ProcessBlock(byte * inoutBlock) const
                {Blowfish::ProcessBlock(inoutBlock, inoutBlock);}
        void ProcessBlock(const byte *inBlock, byte *outBlock) const;

        enum {ROUNDS=16};

private:
        void crypt_block(const word32 in[2], word32 out[2]) const;

        static const word32 p_init[ROUNDS+2];
        static const word32 s_init[4*256];
        SecBlock<word32> pbox, sbox;
};

class BlowfishEncryption : public Blowfish
{
public:
        BlowfishEncryption(const byte *key_string, unsigned int keylength=DEFAULT_KEYLENGTH)
                : Blowfish(key_string, keylength, ENCRYPTION) {}
};

class BlowfishDecryption : public Blowfish
{
public:
        BlowfishDecryption(const byte *key_string, unsigned int keylength=DEFAULT_KEYLENGTH)
                : Blowfish(key_string, keylength, DECRYPTION) {}
};

NAMESPACE_END

#endif

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