/*

* /dev/random EntropySource

* (C) 1999-2009 Jack Lloyd

*

* Botan is released under the Simplified BSD License (see license.txt)

*/

#ifndef BOTAN_ENTROPY_SRC_DEVICE_H_

#define BOTAN_ENTROPY_SRC_DEVICE_H_

#include <botan/entropy_src.h>

#include <vector>

#include <string>

namespace Botan {

/**

* Entropy source reading from kernel devices like /dev/random

*/

class Device_EntropySource final : public Entropy_Source

   {

   public:

      std::string name() const override { return "dev_random"; }

      size_t poll(RandomNumberGenerator& rng) override;

      explicit Device_EntropySource(const std::vector<std::string>& fsnames);

      ~Device_EntropySource();

   private:

      std::vector<int> m_dev_fds;

      int m_max_fd;

   };

}

#endif