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square.h

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00001 #ifndef CRYPTOPP_SQUARE_H 00002 #define CRYPTOPP_SQUARE_H 00003 00004 /** \file 00005 */ 00006 00007 #include "seckey.h" 00008 #include "secblock.h" 00009 00010 NAMESPACE_BEGIN(CryptoPP) 00011 00012 //! _ 00013 struct Square_Info : public FixedBlockSize<16>, public FixedKeyLength<16>, FixedRounds<8> 00014 { 00015 static const char *StaticAlgorithmName() {return "Square";} 00016 }; 00017 00018 /// <a href="http://www.weidai.com/scan-mirror/cs.html#Square">Square</a> 00019 class Square : public Square_Info, public BlockCipherDocumentation 00020 { 00021 class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Square_Info> 00022 { 00023 public: 00024 void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length); 00025 00026 protected: 00027 FixedSizeSecBlock<word32[4], ROUNDS+1> roundkeys; 00028 }; 00029 00030 class CRYPTOPP_NO_VTABLE Enc : public Base 00031 { 00032 public: 00033 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; 00034 private: 00035 static const byte Se[256]; 00036 static const word32 Te[4][256]; 00037 }; 00038 00039 class CRYPTOPP_NO_VTABLE Dec : public Base 00040 { 00041 public: 00042 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; 00043 private: 00044 static const byte Sd[256]; 00045 static const word32 Td[4][256]; 00046 }; 00047 00048 public: 00049 typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption; 00050 typedef BlockCipherFinal<DECRYPTION, Dec> Decryption; 00051 }; 00052 00053 typedef Square::Encryption SquareEncryption; 00054 typedef Square::Decryption SquareDecryption; 00055 00056 NAMESPACE_END 00057 00058 #endif

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