shark.h

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#ifndef CRYPTOPP_SHARK_H
#define CRYPTOPP_SHARK_H

/** \file
*/

#include "config.h"

#ifdef WORD64_AVAILABLE

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

NAMESPACE_BEGIN(CryptoPP)

//! _
struct SHARK_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 1, 16>, public VariableRounds<6, 2>
{
        static const char *StaticAlgorithmName() {return "SHARK-E";}
};

/// <a href="http://www.weidai.com/scan-mirror/cs.html#SHARK-E">SHARK-E</a>
class SHARK : public SHARK_Info, public BlockCipherDocumentation
{
        class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SHARK_Info>
        {
        public:
                void UncheckedSetKey(CipherDir dir, const byte *key, unsigned int length, unsigned int rounds);

        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
#endif

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