randpool.h

#ifndef CRYPTOPP_RANDPOOL_H
#define CRYPTOPP_RANDPOOL_H

#include "cryptlib.h"
#include "filters.h"

NAMESPACE_BEGIN(CryptoPP)

//! Randomness Pool
/*! This class can be used to generate cryptographic quality
    pseudorandom bytes after seeding the pool with IncorporateEntropy() */
class CRYPTOPP_DLL RandomPool : public RandomNumberGenerator, public NotCopyable
{
public:
    RandomPool();

    bool CanIncorporateEntropy() const {return true;}
    void IncorporateEntropy(const byte *input, size_t length);
    void GenerateIntoBufferedTransformation(BufferedTransformation &target, const std::string &channel, lword size);

    // for backwards compatibility. use RandomNumberSource, RandomNumberStore, and RandomNumberSink for other BufferTransformation functionality
    void Put(const byte *input, size_t length) {IncorporateEntropy(input, length);}

private:
    FixedSizeSecBlock<byte, 32> m_key;
    FixedSizeSecBlock<byte, 16> m_seed;
    member_ptr<BlockCipher> m_pCipher;
    bool m_keySet;
};

NAMESPACE_END

#endif