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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