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# rc6.h

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    00001 #ifndef CRYPTOPP_RC6_H
    00002 #define CRYPTOPP_RC6_H
    00003
    00004 /** \file
    00005 */
    00006
    00007 #include "seckey.h"
    00008 #include "secblock.h"
    00009
    00010 NAMESPACE_BEGIN(CryptoPP)
    00011
    00012 struct RC6_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 0, 255>, public VariableRounds<20>
    00013 {
    00014         static const char *StaticAlgorithmName() {return "RC6";}
    00015         typedef word32 RC6_WORD;
    00016 };
    00017
    00018 /// <a href="http://www.weidai.com/scan-mirror/cs.html#RC6">RC6</a>
    00019 class RC6 : public RC6_Info, public BlockCipherDocumentation
    00020 {
    00021         class Base : public BlockCipherBaseTemplate<RC6_Info>
    00022         {
    00023         public:
    00024                 void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length, unsigned int rounds);
    00025
    00026         protected:
    00027                 unsigned int r;       // number of rounds
    00028                 SecBlock<RC6_WORD> sTable;  // expanded key table
    00029         };
    00030
    00031         class Enc : public Base
    00032         {
    00033         public:
    00034                 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
    00035         };
    00036
    00037         class Dec : public Base
    00038         {
    00039         public:
    00040                 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
    00041         };
    00042
    00043 public:
    00044         typedef BlockCipherTemplate<ENCRYPTION, Enc> Encryption;
    00045         typedef BlockCipherTemplate<DECRYPTION, Dec> Decryption;
    00046 };
    00047
    00048 typedef RC6::Encryption RC6Encryption;
    00049 typedef RC6::Decryption RC6Decryption;
    00050
    00051 NAMESPACE_END
    00052
    00053 #endif