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