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shark.h

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00001 #ifndef CRYPTOPP_SHARK_H
00002 #define CRYPTOPP_SHARK_H
00003 
00004 /** \file
00005 */
00006 
00007 #include "config.h"
00008 #include "seckey.h"
00009 #include "secblock.h"
00010 
00011 NAMESPACE_BEGIN(CryptoPP)
00012 
00013 //! _
00014 struct SHARK_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 1, 16>, public VariableRounds<6, 2>
00015 {
00016     static const char *StaticAlgorithmName() {return "SHARK-E";}
00017 };
00018 
00019 /// <a href="http://www.weidai.com/scan-mirror/cs.html#SHARK-E">SHARK-E</a>
00020 class SHARK : public SHARK_Info, public BlockCipherDocumentation
00021 {
00022     class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SHARK_Info>
00023     {
00024     public:
00025         void UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs &param);
00026 
00027     protected:
00028         unsigned int m_rounds;
00029         SecBlock<word64> m_roundKeys;
00030     };
00031 
00032     class CRYPTOPP_NO_VTABLE Enc : public Base
00033     {
00034     public:
00035         void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00036 
00037         // used by Base to do key setup
00038         void InitForKeySetup();
00039 
00040     private:
00041         static const byte sbox[256];
00042         static const word64 cbox[8][256];
00043     };
00044 
00045     class CRYPTOPP_NO_VTABLE Dec : public Base
00046     {
00047     public:
00048         void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00049 
00050     private:
00051         static const byte sbox[256];
00052         static const word64 cbox[8][256];
00053     };
00054 
00055 public:
00056     typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
00057     typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
00058 };
00059 
00060 typedef SHARK::Encryption SHARKEncryption;
00061 typedef SHARK::Decryption SHARKDecryption;
00062 
00063 NAMESPACE_END
00064 
00065 #endif

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