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/*************************************************
* Randpool Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#ifndef BOTAN_RANDPOOL_H__
#define BOTAN_RANDPOOL_H__
#include <botan/rng.h>
#include <botan/base.h>
namespace Botan {
/*************************************************
* Randpool *
*************************************************/
class BOTAN_DLL Randpool : public RandomNumberGenerator
{
public:
void randomize(byte[], u32bit);
bool is_seeded() const;
void clear() throw();
std::string name() const;
Randpool(const std::string&, const std::string&);
~Randpool();
private:
void add_randomness(const byte[], u32bit);
void update_buffer();
void mix_pool();
const u32bit ITERATIONS_BEFORE_RESEED, POOL_BLOCKS;
BlockCipher* cipher;
MessageAuthenticationCode* mac;
SecureVector<byte> pool, buffer, counter;
u32bit entropy;
};
}
#endif
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