blowfish.h
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// blowfish.h - 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)
//! \class Blowfish_Info
//! \brief Blowfish block cipher information
struct Blowfish_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 4, 56>, public FixedRounds<16>
{
CRYPTOPP_CONSTEXPR static const char *StaticAlgorithmName() {return "Blowfish";}
};
// <a href="http://www.weidai.com/scan-mirror/cs.html#Blowfish">Blowfish</a>
//! \class Blowfish_Info
//! \brief Blowfish block cipher
class Blowfish : public Blowfish_Info, public BlockCipherDocumentation
{
//! \class Base
//! \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 &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
BlockCipherDocumentation
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher...
Definition: seckey.h:423
Blowfish
Definition: blowfish.h:25
secblock.h
Classes and functions for secure memory allocations.
FixedBlockSize
Inherited by algorithms with fixed block size.
Definition: seckey.h:34
seckey.h
Classes and functions for implementing secret key algorithms.
BlockCipherFinal
Provides class member functions to key a block cipher.
Definition: seckey.h:339
Blowfish_Info
Blowfish block cipher information.
Definition: blowfish.h:16
FixedSizeSecBlock< word32, ROUNDS+2 >
FixedRounds
Inherited by algorithms with fixed number of rounds.
Definition: seckey.h:47
VariableKeyLength
Inherited by keyed algorithms with variable key length.
Definition: seckey.h:177
FixedRounds< 16 >::ROUNDS
static const int ROUNDS
The number of rounds for the algorithm provided as a constant.
Definition: seckey.h:51
BlockCipherImpl
Provides a base implementation of Algorithm and SimpleKeyingInterface for block ciphers.
Definition: seckey.h:326
CryptoPP
Crypto++ library namespace.
NameValuePairs
Interface for retrieving values given their names.
Definition: cryptlib.h:277