prg.hpp

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#ifndef _PRG_H_
#define _PRG_H_

#include "../sha/shax.hpp"

namespace cryptoTools {

class PRG
{
private:
        SHAx * hashfunction;

        std::vector<uint8_t> seed;

        std::vector<uint8_t> digest;

        unsigned int index;

        unsigned int seedLen;

        uint32_t counter;

public:
        PRG(SHAx * hash);

        void updateDigest();

        void initialize(std::vector<uint8_t> newSeed);

        uint8_t getNextRandByte();

};        


} // closing namespace

#endif