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

/// \file seed.h

/// \brief Classes for the SEED block cipher

/// \since Crypto++ 5.6.0

#ifndef CRYPTOPP_SEED_H

#define CRYPTOPP_SEED_H

#include "seckey.h"

#include "secblock.h"

NAMESPACE_BEGIN(CryptoPP)

/// \brief SEED block cipher information

/// \since Crypto++ 5.6.0

struct SEED_Info : public FixedBlockSize<16>, public FixedKeyLength<16>, public FixedRounds<16>

{

  CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "SEED";}

};

/// \brief SEED block cipher

/// \sa <a href="http://www.cryptolounge.org/wiki/SEED">SEED</a>

/// \since Crypto++ 5.6.0

class SEED : public SEED_Info, public BlockCipherDocumentation

{

  class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SEED_Info>

  {

  public:

    void UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs &params);

    void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;

  protected:

    FixedSizeSecBlock<word32, 32> m_k;

  };

public:

  typedef BlockCipherFinal<ENCRYPTION, Base> Encryption;

  typedef BlockCipherFinal<DECRYPTION, Base> Decryption;

};

NAMESPACE_END

#endif