blowfish.h

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// blowfish.h - originally written and placed in the public domain by Wei Dai
 
 
#ifndef CRYPTOPP_BLOWFISH_H
#define CRYPTOPP_BLOWFISH_H
 
#include "seckey.h"
#include "secblock.h"
 
NAMESPACE_BEGIN(CryptoPP)
 
 
struct Blowfish_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 4, 56>, public FixedRounds<16>
{
        CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Blowfish";}
};
 
// <a href="http://www.cryptopp.com/wiki/Blowfish">Blowfish</a>
 
class Blowfish : public Blowfish_Info, public BlockCipherDocumentation
{
        class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Blowfish_Info>
        {
        public:
                void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
                void UncheckedSetKey(const byte *key_string, unsigned int keylength, const NameValuePairs &params);
 
        private:
                void crypt_block(const word32 in[2], word32 out[2]) const;
 
                static const word32 p_init[ROUNDS+2];
                static const word32 s_init[4*256];
 
                FixedSizeSecBlock<word32, ROUNDS+2> pbox;
                FixedSizeSecBlock<word32, 4*256> sbox;
        };
 
public:
        typedef BlockCipherFinal<ENCRYPTION, Base> Encryption;
        typedef BlockCipherFinal<DECRYPTION, Base> Decryption;
};
 
typedef Blowfish::Encryption BlowfishEncryption;
typedef Blowfish::Decryption BlowfishDecryption;
 
NAMESPACE_END
 
#endif