[157253] in North American Network Operators' Group

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Re: best way to create entropy?

daemon@ATHENA.MIT.EDU (Jimmy Hess)
Thu Oct 11 20:20:12 2012

In-Reply-To: <CAH_OBiffdqVmwspu9f2uzr_cqnExuA_sLp=d0QhOxQWzkSgOZA@mail.gmail.com>
Date: Thu, 11 Oct 2012 19:20:02 -0500
From: Jimmy Hess <mysidia@gmail.com>
To: shawn wilson <ag4ve.us@gmail.com>
Cc: North American Network Operators Group <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

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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