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haval.h

#ifndef CRYPTOPP_HAVAL_H
#define CRYPTOPP_HAVAL_H

#include "iterhash.h"

NAMESPACE_BEGIN(CryptoPP)

class HAVAL : public IteratedHash<word32, false, 128>
{
public:
        enum {DIGESTSIZE = 32, VERSION = 1};

        HAVAL(unsigned int digestSize=DIGESTSIZE, unsigned int passes=3);
        void Final(byte *hash);
        unsigned int DigestSize() const {return digestSize;}

protected:
        static const unsigned int wi2[32], wi3[32], wi4[32], wi5[32];
        static const word32 mc2[32], mc3[32], mc4[32], mc5[32];

        void Init();
        void Tailor(unsigned int FPTLEN);
        void vTransform(const word32 *in);

        const unsigned int digestSize, pass;
};

class HAVAL3 : public HAVAL
{
public:
        HAVAL3(unsigned int digestSize=DIGESTSIZE) : HAVAL(digestSize, 3) {}
        static void Transform(word32 *buf, const word32 *in);
};

class HAVAL4 : public HAVAL
{
public:
        HAVAL4(unsigned int digestSize=DIGESTSIZE) : HAVAL(digestSize, 4) {}
        static void Transform(word32 *buf, const word32 *in);
};

class HAVAL5 : public HAVAL
{
public:
        HAVAL5(unsigned int digestSize=DIGESTSIZE) : HAVAL(digestSize, 5) {}
        static void Transform(word32 *buf, const word32 *in);
};

NAMESPACE_END

#endif

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