1 files changed, 53 insertions, 0 deletions
diff --git a/src/entropy/dev_random/dev_random.h b/src/entropy/dev_random/dev_random.h
new file mode 100644
index 000000000..3ffe536e3
--- /dev/null
+++ b/src/entropy/dev_random/dev_random.h
@@ -0,0 +1,53 @@
+/*
+* /dev/random EntropySource
+* (C) 1999-2009 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_ENTROPY_SRC_DEVICE_H__
+#define BOTAN_ENTROPY_SRC_DEVICE_H__
+
+#include <botan/entropy_src.h>
+#include <vector>
+#include <string>
+
+namespace Botan {
+
+class Device_EntropySource : public EntropySource
+   {
+   public:
+      std::string name() const { return "RNG Device Reader"; }
+
+      void poll(Entropy_Accumulator& accum);
+
+      Device_EntropySource(const std::vector<std::string>& fsnames);
+      ~Device_EntropySource();
+   private:
+
+      /**
+      A class handling reading from a Unix character device
+      */
+      class Device_Reader
+         {
+         public:
+            typedef int fd_type;
+
+            // Does not own fd, a transient class
+            Device_Reader(fd_type device_fd) : fd(device_fd) {}
+
+            void close();
+
+            u32bit get(byte out[], u32bit length, u32bit ms_wait_time);
+
+            static fd_type open(const std::string& pathname);
+         private:
+            fd_type fd;
+         };
+
+      std::vector<Device_Reader> devices;
+   };
+
+}
+
+#endif