rc5.h
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// rc5.h - written and placed in the public domain by Wei Dai
//! \file rc5.h
//! \brief Classes for the RC5 block cipher
#ifndef CRYPTOPP_RC5_H
#define CRYPTOPP_RC5_H
#include "seckey.h"
#include "secblock.h"
NAMESPACE_BEGIN(CryptoPP)
//! \class RC5_Info
//! \brief RC5 block cipher information
struct RC5_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 0, 255>, public VariableRounds<16>
{
CRYPTOPP_CONSTEXPR static const char *StaticAlgorithmName() {return "RC5";}
typedef word32 RC5_WORD;
};
//! \class RC5
//! \brief RC5 block cipher
//! \sa <a href="http://www.weidai.com/scan-mirror/cs.html#RC5">RC5</a>
class RC5 : public RC5_Info, public BlockCipherDocumentation
{
class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<RC5_Info>
{
public:
void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
protected:
unsigned int r; // number of rounds
SecBlock<RC5_WORD> sTable; // expanded key table
};
class CRYPTOPP_NO_VTABLE Enc : public Base
{
public:
void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
};
class CRYPTOPP_NO_VTABLE Dec : public Base
{
public:
void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
};
public:
typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
};
typedef RC5::Encryption RC5Encryption;
typedef RC5::Decryption RC5Decryption;
NAMESPACE_END
#endif
BlockCipherDocumentation
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher...
Definition: seckey.h:423
SecBlock< RC5_WORD >
RC5
RC5 block cipher.
Definition: rc5.h:25
secblock.h
Classes and functions for secure memory allocations.
FixedBlockSize
Inherited by algorithms with fixed block size.
Definition: seckey.h:34
VariableRounds
Inherited by algorithms with variable number of rounds.
Definition: seckey.h:60
seckey.h
Classes and functions for implementing secret key algorithms.
BlockCipherFinal< ENCRYPTION, Enc >
RC5_Info
RC5 block cipher information.
Definition: rc5.h:16
VariableKeyLength
Inherited by keyed algorithms with variable key length.
Definition: seckey.h:177
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