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# 3way.h

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    00001 #ifndef CRYPTOPP_THREEWAY_H
    00002 #define CRYPTOPP_THREEWAY_H
    00003
    00004 /** \file
    00005 */
    00006
    00007 #include "seckey.h"
    00008 #include "secblock.h"
    00009
    00010 NAMESPACE_BEGIN(CryptoPP)
    00011
    00012 struct ThreeWay_Info : public FixedBlockSize<12>, public FixedKeyLength<12>, public VariableRounds<11>
    00013 {
    00014         static const char *StaticAlgorithmName() {return "3-Way";}
    00015 };
    00016
    00017 /// <a href="http://www.weidai.com/scan-mirror/cs.html#3-Way">3-Way</a>
    00018 class ThreeWay : public ThreeWay_Info, public BlockCipherDocumentation
    00019 {
    00020         class Base : public BlockCipherBaseTemplate<ThreeWay_Info>
    00021         {
    00022         public:
    00023                 void UncheckedSetKey(CipherDir direction, const byte *key, unsigned int length, unsigned int rounds);
    00024
    00025         protected:
    00026                 unsigned int m_rounds;
    00027                 FixedSizeSecBlock<word32, 3> m_k;
    00028         };
    00029
    00030         class Enc : public Base
    00031         {
    00032         public:
    00033                 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
    00034         };
    00035
    00036         class Dec : public Base
    00037         {
    00038         public:
    00039                 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
    00040         };
    00041
    00042 public:
    00043         typedef BlockCipherTemplate<ENCRYPTION, Enc> Encryption;
    00044         typedef BlockCipherTemplate<DECRYPTION, Dec> Decryption;
    00045 };
    00046
    00047 typedef ThreeWay::Encryption ThreeWayEncryption;
    00048 typedef ThreeWay::Decryption ThreeWayDecryption;
    00049
    00050 NAMESPACE_END
    00051
    00052 #endif