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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