skipjack.h

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00001 #ifndef CRYPTOPP_SKIPJACK_H
00002 #define CRYPTOPP_SKIPJACK_H
00003 
00004 /** \file
00005 */
00006 
00007 #include "seckey.h"
00008 #include "secblock.h"
00009 
00010 NAMESPACE_BEGIN(CryptoPP)
00011 
00012 //! _
00013 struct SKIPJACK_Info : public FixedBlockSize<8>, public FixedKeyLength<10>
00014 {
00015     CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return "SKIPJACK";}
00016 };
00017 
00018 /// <a href="http://www.weidai.com/scan-mirror/cs.html#SKIPJACK">SKIPJACK</a>
00019 class SKIPJACK : public SKIPJACK_Info, public BlockCipherDocumentation
00020 {
00021     class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SKIPJACK_Info>
00022     {
00023     public:
00024         void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
00025 
00026     protected:
00027         static const byte fTable[256];
00028 
00029         FixedSizeSecBlock<byte[256], 10> tab;
00030     };
00031 
00032     class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Enc : public Base
00033     {
00034     public:
00035         void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00036     private:
00037         static const byte Se[256];
00038         static const word32 Te[4][256];
00039     };
00040 
00041     class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Dec : public Base
00042     {
00043     public:
00044         void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00045     private:
00046         static const byte Sd[256];
00047         static const word32 Td[4][256];
00048     };
00049 
00050 public:
00051     typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
00052     typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
00053 };
00054 
00055 typedef SKIPJACK::Encryption SKIPJACKEncryption;
00056 typedef SKIPJACK::Decryption SKIPJACKDecryption;
00057 
00058 NAMESPACE_END
00059 
00060 #endif

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