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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