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mdc.h

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 // mdc.h - written and placed in the public domain by Wei Dai

#ifndef CRYPTOPP_MDC_H
#define CRYPTOPP_MDC_H

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

NAMESPACE_BEGIN(CryptoPP)

template <class T> class MDC : public FixedBlockSize<T::DIGESTSIZE>, public FixedKeyLength<T::BLOCKSIZE>
{
public:
        MDC(const byte *userKey, unsigned int = 0)
                : key(KEYLENGTH/4)
        {
                T::CorrectEndianess(key, (word32 *)userKey, KEYLENGTH);
        }

        void ProcessBlock(byte *inoutBlock) const
        {
                T::CorrectEndianess((word32 *)inoutBlock, (word32 *)inoutBlock, BLOCKSIZE);
                T::Transform((word32 *)inoutBlock, key);
                T::CorrectEndianess((word32 *)inoutBlock, (word32 *)inoutBlock, BLOCKSIZE);
        }

        void ProcessBlock(const byte *inBlock, byte *outBlock) const
        {
                T::CorrectEndianess((word32 *)outBlock, (word32 *)inBlock, BLOCKSIZE);
                T::Transform((word32 *)outBlock, key);
                T::CorrectEndianess((word32 *)outBlock, (word32 *)outBlock, BLOCKSIZE);
        }

private:
        SecBlock<word32> key;
};

NAMESPACE_END

#endif

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