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tea.h

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#ifndef CRYPTOPP_TEA_H
#define CRYPTOPP_TEA_H

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

NAMESPACE_BEGIN(CryptoPP)

class TEA : public FixedBlockSize<8>, public FixedKeyLength<16>
{
public:
        TEA(const byte *userKey);

        enum {ROUNDS=32, LOG_ROUNDS=5};

protected:
        static const word32 DELTA;
        SecBlock<word32> k;
};

class TEAEncryption : public TEA
{
public:
        TEAEncryption(const byte *userKey, unsigned int = 0)
                : TEA(userKey) {}

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

class TEADecryption : public TEA
{
public:
        TEADecryption(const byte *userKey, unsigned int = 0)
                : TEA(userKey) {}

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

NAMESPACE_END

#endif

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