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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)> m_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