hmac.h

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//
// C++ Interface: hmac
//
// Description: 
//
//
// Author: Konrad Rosenbaum <konrad@silmor.de>, (C) 2007-2011
//
// Copyright: See README/COPYING.GPL files that come with this distribution
//
//

#ifndef SMOKE_HMAC_H
#define SMOKE_HMAC_H

#include <QCryptographicHash>

#include "commonexport.h"

class MAGICSMOKE_COMMON_EXPORT SMHmac
{
        public:
                SMHmac(QCryptographicHash::Algorithm algo,const QByteArray&key);
                void addData(const char * data, int length );
                void addData(const QByteArray & data );
                void reset();
                QByteArray result();
                
                static int resultWidth(QCryptographicHash::Algorithm);
                static int blockWidth(QCryptographicHash::Algorithm);
                static QByteArray hmac(const QByteArray&data,const QByteArray&key,QCryptographicHash::Algorithm method);
        private:
                //the two key schedules
                QByteArray keyA,keyB;
                //remember where we are
                enum State {Collecting,Finished};
                mutable State state;
                //inner hash function
                QCryptographicHash subhashin,subhashout;
};


#endif