square.h
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// square.h - written and placed in the public domain by Wei Dai
//! \file square.h
//! \brief Classes for the Square block cipher
#ifndef CRYPTOPP_SQUARE_H
#define CRYPTOPP_SQUARE_H
#include "seckey.h"
#include "secblock.h"
NAMESPACE_BEGIN(CryptoPP)
//! \class Square_Info
//! \brief Square block cipher information
struct Square_Info : public FixedBlockSize<16>, public FixedKeyLength<16>, FixedRounds<8>
{
CRYPTOPP_CONSTEXPR static const char *StaticAlgorithmName() {return "Square";}
};
//! \class Square
//! \brief Square block cipher
//! \sa <a href="http://www.weidai.com/scan-mirror/cs.html#Square">Square</a>
class Square : public Square_Info, public BlockCipherDocumentation
{
class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Square_Info>
{
public:
void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
protected:
FixedSizeSecBlock<word32, 4*(ROUNDS+1)> m_roundkeys;
};
class CRYPTOPP_NO_VTABLE Enc : public Base
{
public:
void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
private:
static const byte Se[256];
static const word32 Te[4][256];
};
class CRYPTOPP_NO_VTABLE Dec : public Base
{
public:
void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
private:
static const byte Sd[256];
static const word32 Td[4][256];
};
public:
typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
};
typedef Square::Encryption SquareEncryption;
typedef Square::Decryption SquareDecryption;
NAMESPACE_END
#endif
FixedKeyLength
Inherited by keyed algorithms with fixed key length.
Definition: seckey.h:128
BlockCipherDocumentation
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher...
Definition: seckey.h:423
Square
Square block cipher.
Definition: square.h:24
BlockCipher
Interface for one direction (encryption or decryption) of a block cipher.
Definition: cryptlib.h:1091
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< ENCRYPTION, Enc >
FixedSizeSecBlock< word32, 4 *(ROUNDS+1)>
FixedRounds
Inherited by algorithms with fixed number of rounds.
Definition: seckey.h:47
Square_Info
Square block cipher information.
Definition: square.h:16
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