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rc5.h

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00001 #ifndef CRYPTOPP_RC5_H
00002 #define CRYPTOPP_RC5_H
00003 
00004 /** \file
00005 */
00006 
00007 #include "seckey.h"
00008 #include "secblock.h"
00009 
00010 NAMESPACE_BEGIN(CryptoPP)
00011 
00012 //! _
00013 struct RC5_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 0, 255>, public VariableRounds<16>
00014 {
00015     static const char *StaticAlgorithmName() {return "RC5";}
00016     typedef word32 RC5_WORD;
00017 };
00018 
00019 /// <a href="http://www.weidai.com/scan-mirror/cs.html#RC5">RC5</a>
00020 class RC5 : public RC5_Info, public BlockCipherDocumentation
00021 {
00022     class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<RC5_Info>
00023     {
00024     public:
00025         void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
00026 
00027     protected:
00028         unsigned int r;       // number of rounds
00029         SecBlock<RC5_WORD> sTable;  // expanded key table
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 
00038     class CRYPTOPP_NO_VTABLE Dec : public Base
00039     {
00040     public:
00041         void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00042     };
00043 
00044 public:
00045     typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
00046     typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
00047 };
00048 
00049 typedef RC5::Encryption RC5Encryption;
00050 typedef RC5::Decryption RC5Decryption;
00051 
00052 NAMESPACE_END
00053 
00054 #endif

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