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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 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
class Blowfish : public Blowfish_Info, public BlockCipherDocumentation
{
/// \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
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 ¶ms);
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
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