64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
// square.h - originally written and placed in the public domain by Wei Dai
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/// \file square.h
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/// \brief Classes for the Square block cipher
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#ifndef CRYPTOPP_SQUARE_H
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#define CRYPTOPP_SQUARE_H
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#include "seckey.h"
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#include "secblock.h"
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NAMESPACE_BEGIN(CryptoPP)
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/// \brief Square block cipher information
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/// \since Crypto++ 2.2
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struct Square_Info : public FixedBlockSize<16>, public FixedKeyLength<16>, FixedRounds<8>
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{
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CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Square";}
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};
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/// \brief Square block cipher
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/// \sa <a href="http://www.cryptopp.com/wiki/Square">Square</a>
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/// \since Crypto++ 2.2
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class Square : public Square_Info, public BlockCipherDocumentation
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{
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class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Square_Info>
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{
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public:
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void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms);
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protected:
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FixedSizeSecBlock<word32, 4*(ROUNDS+1)> m_roundkeys;
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};
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class CRYPTOPP_NO_VTABLE Enc : public Base
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{
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public:
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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private:
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static const byte Se[256];
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static const word32 Te[4][256];
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};
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class CRYPTOPP_NO_VTABLE Dec : public Base
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{
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public:
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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private:
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static const byte Sd[256];
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static const word32 Td[4][256];
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};
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public:
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typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
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typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
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};
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typedef Square::Encryption SquareEncryption;
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typedef Square::Decryption SquareDecryption;
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NAMESPACE_END
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#endif
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