skipjack.h
Go to the documentation of this file.
// skipjack.h - written and placed in the public domain by Wei Dai
//! \file skipjack.h
//! \brief Classes for the SKIPJACK block cipher
#ifndef CRYPTOPP_SKIPJACK_H
#define CRYPTOPP_SKIPJACK_H
#include "seckey.h"
#include "secblock.h"
NAMESPACE_BEGIN(CryptoPP)
//! \class SKIPJACK_Info
//! \brief SKIPJACK block cipher information
struct SKIPJACK_Info : public FixedBlockSize<8>, public FixedKeyLength<10>
{
CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return "SKIPJACK";}
};
//! \class SKIPJACK
//! \brief SKIPJACK block cipher
//! \sa <a href="http://www.weidai.com/scan-mirror/cs.html#SKIPJACK">SKIPJACK</a>
class SKIPJACK : public SKIPJACK_Info, public BlockCipherDocumentation
{
//! \class Base
//! \brief SKIPJACK block cipher default operation
class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SKIPJACK_Info>
{
public:
void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
unsigned int OptimalDataAlignment() const {return GetAlignmentOf<word16>();}
protected:
static const byte fTable[256];
FixedSizeSecBlock<byte, 10*256> tab;
};
//! \class Enc
//! \brief SKIPJACK block cipher encryption operation
class CRYPTOPP_DLL 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 Dec
//! \brief SKIPJACK block cipher decryption operation
class CRYPTOPP_DLL 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 SKIPJACK::Encryption SKIPJACKEncryption;
typedef SKIPJACK::Decryption SKIPJACKDecryption;
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
SKIPJACK_Info
SKIPJACK block cipher information.
Definition: skipjack.h:16
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< byte, 10 *256 >
BlockCipherImpl
Provides a base implementation of Algorithm and SimpleKeyingInterface for block ciphers.
Definition: seckey.h:326
SKIPJACK
SKIPJACK block cipher.
Definition: skipjack.h:24
CryptoPP
Crypto++ library namespace.
NameValuePairs
Interface for retrieving values given their names.
Definition: cryptlib.h:277