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