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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(const byte *userKey, unsigned int length, const NameValuePairs &params);
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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