1 files changed, 39 insertions, 0 deletions
diff --git a/include/buf_es.h b/include/buf_es.h
new file mode 100644
index 000000000..cb8057314
--- /dev/null
+++ b/include/buf_es.h
@@ -0,0 +1,39 @@
+/*************************************************
+* Buffered EntropySource Header File             *
+* (C) 1999-2006 The Botan Project                *
+*************************************************/
+
+#ifndef BOTAN_BUFFERED_ES_H__
+#define BOTAN_BUFFERED_ES_H__
+
+#include <botan/base.h>
+
+namespace Botan {
+
+/*************************************************
+* Buffered EntropySource                         *
+*************************************************/
+class Buffered_EntropySource : public EntropySource
+   {
+   public:
+      u32bit slow_poll(byte[], u32bit);
+      u32bit fast_poll(byte[], u32bit);
+   protected:
+      Buffered_EntropySource();
+      u32bit copy_out(byte[], u32bit, u32bit);
+
+      void add_bytes(const void*, u32bit);
+      void add_bytes(u64bit);
+      void add_timestamp();
+
+      virtual void do_slow_poll() = 0;
+      virtual void do_fast_poll();
+   private:
+      SecureVector<byte> buffer;
+      u32bit write_pos, read_pos;
+      bool done_slow_poll;
+   };
+
+}
+
+#endif