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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 * 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(CipherDir direction, const byte *userKey, unsigned int length); 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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