nanog mailing list archives

Re: best way to create entropy?


From: Jimmy Hess <mysidia () gmail com>
Date: Thu, 11 Oct 2012 19:20:02 -0500

On 10/11/12, shawn wilson <ag4ve.us () gmail com> wrote:
in the past, i've done many different things to create entropy -
encode videos, watch youtube, tcpdump -vvv > /dev/null, compiled a
kernel. but, what is best? just whatever gets your cpu to peak or are

You are referring to  the entropy pool used for  /dev/random  and
crypto operations ?


You could  setup a  video capture card  or radio tuner card,  tune it into
a good noise source,  and arrange for   the bit stream to get  written
 to  /dev/random

Because anything written to  /dev/random  gets  mixed in /  XOR'ed
into the entropy pool



some tasks better than others?

--
-JH


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