Add Stateful_RNG

Handles fork checking for HMAC_RNG and HMAC_DRBG

AutoSeeded_RNG change - switch to HMAC_DRBG as default.

Start removing the io buffer from entropy poller.

Update default RNG poll bits to 256.

Fix McEliece test, was using wrong RNG API.

Update docs.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/lib/entropy/dev_random/dev_random.h b/src/lib/entropy/dev_random/dev_random.h
index 1f29b2f64..05b36f3eb 100644
--- a/src/lib/entropy/dev_random/dev_random.h
+++ b/src/lib/entropy/dev_random/dev_random.h
@@ -25,10 +25,12 @@ class Device_EntropySource final : public Entropy_Source
       void poll(Entropy_Accumulator& accum) override;
 
       Device_EntropySource(const std::vector<std::string>& fsnames);
+
       ~Device_EntropySource();
    private:
-      typedef int fd_type;
-      std::vector<fd_type> m_devices;
+      secure_vector<uint8_t> m_io_buf;
+      std::vector<int> m_dev_fds;
+      int m_max_fd;
    };
 
 }