// skipjack.h - written and placed in the public domain by Wei Dai //! \file skipjack.h //! \brief Classes for the SKIPJACK block cipher #ifndef CRYPTOPP_SKIPJACK_H #define CRYPTOPP_SKIPJACK_H #include "seckey.h" #include "secblock.h" NAMESPACE_BEGIN(CryptoPP) //! _ struct SKIPJACK_Info : public FixedBlockSize<8>, public FixedKeyLength<10> { CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return "SKIPJACK";} }; /// SKIPJACK class SKIPJACK : public SKIPJACK_Info, public BlockCipherDocumentation { class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl { public: void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms); unsigned int OptimalDataAlignment() const {return GetAlignmentOf();} protected: static const byte fTable[256]; FixedSizeSecBlock tab; }; class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Enc : public Base { public: void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; private: static const byte Se[256]; static const word32 Te[4][256]; }; class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Dec : public Base { public: void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; private: static const byte Sd[256]; static const word32 Td[4][256]; }; public: typedef BlockCipherFinal Encryption; typedef BlockCipherFinal Decryption; }; typedef SKIPJACK::Encryption SKIPJACKEncryption; typedef SKIPJACK::Decryption SKIPJACKDecryption; NAMESPACE_END #endif