1 files changed, 33 insertions, 0 deletions

diff --git a/lib/cryptopp/randpool.h b/lib/cryptopp/randpool.h
new file mode 100644
index 000000000..c25bc9bb1
--- /dev/null
+++ b/lib/cryptopp/randpool.h
@@ -0,0 +1,33 @@
+#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