tool: benchmark the RNG.

This change adds a benchmark for the RNG and also allows specific speed
tests to be selected via a command-line argument, since the full speed
suite is getting quite lengthy now and is only going to get longer in
the future.

Change-Id: If62c69177d58d3eb945d6108524c144ea0044137
Reviewed-by: Adam Langley <>
1 file changed