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// shark.h - originally written and placed in the public domain by Wei Dai
/// \file shark.h
/// \brief Classes for the SHARK block cipher
#ifndef CRYPTOPP_SHARK_H
#define CRYPTOPP_SHARK_H
#include "config.h"
#include "seckey.h"
#include "secblock.h"
NAMESPACE_BEGIN(CryptoPP)
/// \class SHARK_Info
/// \brief SHARK block cipher information
struct SHARK_Info : public FixedBlockSize<8>, public FixedKeyLength<16>, public VariableRounds<6, 2>
{
CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "SHARK-E";}
};
/// \class SHARK
/// \brief SHARK block cipher
/// <a href="http://www.cryptopp.com/wiki/SHARK-E">SHARK-E</a>
class SHARK : public SHARK_Info, public BlockCipherDocumentation
{
/// \class Base
/// \brief SHARK block cipher default operation
class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SHARK_Info>
{
public:
void UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs ¶m);
protected:
unsigned int m_rounds;
SecBlock<word64> m_roundKeys;
};
/// \class Enc
/// \brief SHARK block cipher encryption operation
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 Dec
/// \brief SHARK block cipher decryption operation
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
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