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#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
pseudorandom bytes after seeding the pool with
the Put() methods */
class CRYPTOPP_DLL RandomPool : public RandomNumberGenerator,
public Bufferless<BufferedTransformation>
{
public:
//! poolSize must be greater than 16
RandomPool(unsigned int poolSize=384);
size_t Put2(const byte *begin, size_t length, int messageEnd, bool blocking);
bool AnyRetrievable() const {return true;}
lword MaxRetrievable() const {return ULONG_MAX;}
size_t TransferTo2(BufferedTransformation &target, lword &transferBytes, const std::string &channel=NULL_CHANNEL, bool blocking=true);
size_t CopyRangeTo2(BufferedTransformation &target, lword &begin, lword end=LWORD_MAX, const std::string &channel=NULL_CHANNEL, bool blocking=true) const
{
throw NotImplemented("RandomPool: CopyRangeTo2() is not supported by this store");
}
byte GenerateByte();
void GenerateBlock(byte *output, size_t size);
void IsolatedInitialize(const NameValuePairs ¶meters) {}
protected:
void Stir();
private:
SecByteBlock pool, key;
size_t addPos, getPos;
};
NAMESPACE_END
#endif
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