---

rc6.h

Go to the documentation of this file.

#ifndef CRYPTOPP_RC6_H
#define CRYPTOPP_RC6_H

#include "cryptlib.h"
#include "misc.h"

NAMESPACE_BEGIN(CryptoPP)

class RC6Base : public FixedBlockSize<16>, public VariableKeyLength<16, 0, 255>
{
public:
        typedef word32 RC6_WORD;

        enum {DEFAULT_ROUNDS=20};

protected:
        RC6Base(const byte *key, unsigned int keyLen, unsigned int rounds);

        const unsigned int r;       // number of rounds
        SecBlock<RC6_WORD> sTable;  // expanded key table
};

class RC6Encryption : public RC6Base
{
public:
        RC6Encryption(const byte *key, unsigned int keyLen=DEFAULT_KEYLENGTH, unsigned int rounds=DEFAULT_ROUNDS)
                : RC6Base(key, keyLen, rounds) {}

        void ProcessBlock(byte * inoutBlock) const
                {RC6Encryption::ProcessBlock(inoutBlock, inoutBlock);}
        void ProcessBlock(const byte *inBlock, byte * outBlock) const;
};

class RC6Decryption : public RC6Base
{
public:
        RC6Decryption(const byte *key, unsigned int keyLen=DEFAULT_KEYLENGTH, unsigned int rounds=DEFAULT_ROUNDS)
                : RC6Base(key, keyLen, rounds) {}

        void ProcessBlock(byte * inoutBlock) const
                {RC6Decryption::ProcessBlock(inoutBlock, inoutBlock);}
        void ProcessBlock(const byte *inBlock, byte * outBlock) const;
};

NAMESPACE_END

#endif

---