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71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
// blowfish.h - originally written and placed in the public domain by Wei Dai
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/// \file blowfish.h
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/// \brief Classes for the Blowfish block cipher
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#ifndef CRYPTOPP_BLOWFISH_H
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#define CRYPTOPP_BLOWFISH_H
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#include "seckey.h"
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#include "secblock.h"
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NAMESPACE_BEGIN(CryptoPP)
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/// \brief Class specific implementation and overrides used to operate the cipher.
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/// \details Implementations and overrides in \p Base apply to both \p ENCRYPTION and \p DECRYPTION directions
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template<class Info, class ByteOrder>
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class CRYPTOPP_NO_VTABLE Blowfish_Base : public BlockCipherImpl<Info>
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{
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public:
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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void UncheckedSetKey(const byte *key_string, unsigned int keylength, const NameValuePairs ¶ms);
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private:
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void crypt_block(const word32 in[2], word32 out[2]) const;
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static const word32 p_init[Info::ROUNDS+2];
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static const word32 s_init[4*256];
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FixedSizeSecBlock<word32, Info::ROUNDS+2> pbox;
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FixedSizeSecBlock<word32, 4*256> sbox;
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};
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/// \brief Blowfish block cipher information
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struct Blowfish_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 4, 56>, public FixedRounds<16>
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{
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CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Blowfish";}
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};
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// <a href="http://www.cryptopp.com/wiki/Blowfish">Blowfish</a>
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/// \brief Blowfish block cipher
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/// \since Crypto++ 1.0
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struct Blowfish : public Blowfish_Info, public BlockCipherDocumentation
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{
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typedef BlockCipherFinal<ENCRYPTION, Blowfish_Base<Blowfish_Info, BigEndian> > Encryption;
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typedef BlockCipherFinal<DECRYPTION, Blowfish_Base<Blowfish_Info, BigEndian> > Decryption;
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};
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typedef Blowfish::Encryption BlowfishEncryption;
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typedef Blowfish::Decryption BlowfishDecryption;
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/// \brief BlowfishCompat block cipher information
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struct BlowfishCompat_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 4, 56>, public FixedRounds<16>
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{
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CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "BlowfishCompat";}
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};
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/// \brief BlowfishCompat block cipher
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struct BlowfishCompat : public BlowfishCompat_Info, public BlockCipherDocumentation
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{
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typedef BlockCipherFinal<ENCRYPTION, Blowfish_Base<BlowfishCompat_Info, LittleEndian> > Encryption;
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typedef BlockCipherFinal<DECRYPTION, Blowfish_Base<BlowfishCompat_Info, LittleEndian> > Decryption;
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};
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typedef BlowfishCompat::Encryption BlowfishCompatEncryption;
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typedef BlowfishCompat::Decryption BlowfishCompatDecryption;
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NAMESPACE_END
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#endif
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