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shark.h

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#ifndef CRYPTOPP_SHARK_H
#define CRYPTOPP_SHARK_H

#include "config.h"

#ifdef WORD64_AVAILABLE

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

NAMESPACE_BEGIN(CryptoPP)

class SHARKBase : public FixedBlockSize<8>, public VariableKeyLength<16, 1, 16>
{
public:
        enum {DEFAULT_ROUNDS=6};

protected:
        static void InitEncryptionRoundKeys(const byte *key, unsigned int keyLen, unsigned int rounds, word64 *roundkeys);
        SHARKBase(unsigned int rounds) : rounds(rounds), roundkeys(rounds+1) {}

        unsigned int rounds;
        SecBlock<word64> roundkeys;
};

class SHARKEncryption : public SHARKBase
{
public:
        SHARKEncryption(const byte *key, unsigned int keyLen=DEFAULT_KEYLENGTH, unsigned int rounds=DEFAULT_ROUNDS);

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

private:
        friend class SHARKBase;
        SHARKEncryption();
        static const byte sbox[256];
        static const word64 cbox[8][256];
};

class SHARKDecryption : public SHARKBase
{
public:
        SHARKDecryption(const byte *key, unsigned int keyLen=DEFAULT_KEYLENGTH, unsigned int rounds=DEFAULT_ROUNDS);

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

private:
        static const byte sbox[256];
        static const word64 cbox[8][256];
};

NAMESPACE_END

#endif
#endif

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