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blowfish.h

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00001 #ifndef CRYPTOPP_BLOWFISH_H 00002 #define CRYPTOPP_BLOWFISH_H 00003 00004 /** \file */ 00005 00006 #include "seckey.h" 00007 #include "secblock.h" 00008 00009 NAMESPACE_BEGIN(CryptoPP) 00010 00011 struct Blowfish_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 1, 56>, public FixedRounds<16> 00012 { 00013 static const char *StaticAlgorithmName() {return "Blowfish";} 00014 }; 00015 00016 //! <a href="http://www.weidai.com/scan-mirror/cs.html#Blowfish">Blowfish</a> 00017 class Blowfish : public Blowfish_Info, public BlockCipherDocumentation 00018 { 00019 class Base : public BlockCipherBaseTemplate<Blowfish_Info> 00020 { 00021 public: 00022 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; 00023 void UncheckedSetKey(CipherDir direction, const byte *key_string, unsigned int keylength); 00024 00025 private: 00026 void crypt_block(const word32 in[2], word32 out[2]) const; 00027 00028 static const word32 p_init[ROUNDS+2]; 00029 static const word32 s_init[4*256]; 00030 00031 FixedSizeSecBlock<word32, ROUNDS+2> pbox; 00032 FixedSizeSecBlock<word32, 4*256> sbox; 00033 }; 00034 00035 public: 00036 typedef BlockCipherTemplate<ENCRYPTION, Base> Encryption; 00037 typedef BlockCipherTemplate<DECRYPTION, Base> Decryption; 00038 }; 00039 00040 typedef Blowfish::Encryption BlowfishEncryption; 00041 typedef Blowfish::Decryption BlowfishDecryption; 00042 00043 NAMESPACE_END 00044 00045 #endif

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