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

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