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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 //! _
    00012 struct Blowfish_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 1, 56>, public FixedRounds<16>
    00013 {
    00014         static const char *StaticAlgorithmName() {return "Blowfish";}
    00015 };
    00016
    00017 //! <a href="http://www.weidai.com/scan-mirror/cs.html#Blowfish">Blowfish</a>
    00018 class Blowfish : public Blowfish_Info, public BlockCipherDocumentation
    00019 {
    00020         class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Blowfish_Info>
    00021         {
    00022         public:
    00023                 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
    00024                 void UncheckedSetKey(CipherDir direction, const byte *key_string, unsigned int keylength);
    00025
    00026         private:
    00027                 void crypt_block(const word32 in[2], word32 out[2]) const;
    00028
    00029                 static const word32 p_init[ROUNDS+2];
    00030                 static const word32 s_init[4*256];
    00031
    00032                 FixedSizeSecBlock<word32, ROUNDS+2> pbox;
    00033                 FixedSizeSecBlock<word32, 4*256> sbox;
    00034         };
    00035
    00036 public:
    00037         typedef BlockCipherFinal<ENCRYPTION, Base> Encryption;
    00038         typedef BlockCipherFinal<DECRYPTION, Base> Decryption;
    00039 };
    00040
    00041 typedef Blowfish::Encryption BlowfishEncryption;
    00042 typedef Blowfish::Decryption BlowfishDecryption;
    00043
    00044 NAMESPACE_END
    00045
    00046 #endif