shark.h

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// shark.h - written and placed in the public domain by Wei Dai


#ifndef CRYPTOPP_SHARK_H
#define CRYPTOPP_SHARK_H

#include "config.h"
#include "seckey.h"
#include "secblock.h"

NAMESPACE_BEGIN(CryptoPP)

struct SHARK_Info : public FixedBlockSize<8>, public FixedKeyLength<16>, public VariableRounds<6, 2>
{
        CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "SHARK-E";}
};

class SHARK : public SHARK_Info, public BlockCipherDocumentation
{
        class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SHARK_Info>
        {
        public:
                void UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs &param);

        protected:
                unsigned int m_rounds;
                SecBlock<word64> m_roundKeys;
        };

        class CRYPTOPP_NO_VTABLE Enc : public Base
        {
        public:
                void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;

                // used by Base to do key setup
                void InitForKeySetup();

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

        class CRYPTOPP_NO_VTABLE Dec : public Base
        {
        public:
                void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;

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

public:
        typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
        typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
};

typedef SHARK::Encryption SHARKEncryption;
typedef SHARK::Decryption SHARKDecryption;

NAMESPACE_END

#endif