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// rc6.h - originally written and placed in the public domain by Wei Dai
/// \file rc6.h
/// \brief Classes for the RC6 block cipher
/// \since Crypto++ 3.0
#ifndef CRYPTOPP_RC6_H
#define CRYPTOPP_RC6_H
#include "seckey.h"
#include "secblock.h"
NAMESPACE_BEGIN(CryptoPP)
/// \brief RC6 block cipher information
/// \since Crypto++ 3.0
struct RC6_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>, public VariableRounds<20>
{
CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "RC6";}
typedef word32 RC6_WORD;
};
/// \brief RC6 block cipher
/// \sa <a href="http://www.cryptopp.com/wiki/RC6">RC6</a>
/// \since Crypto++ 3.0
class RC6 : public RC6_Info, public BlockCipherDocumentation
{
class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<RC6_Info>
{
public:
void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms);
protected:
unsigned int r; // number of rounds
SecBlock<RC6_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 RC6::Encryption RC6Encryption;
typedef RC6::Decryption RC6Decryption;
NAMESPACE_END
#endif
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