rtl-entropy, atmospheric radio noise entropy source

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Michel Pelletier pelletier.michel at gmail.com
Fri Feb 15 16:26:32 UTC 2013

Awesome Paul!

I think this is a great idea, I experimented a bit with an rtl-sdr based RF
noise random generator, but for Python only:


Mostly for fun.  As you mentioned running it through rng-test would be
ideal but I haven't had the time.  You've got the right idea making yours
work as a kernel-level random device.  Good luck!


On Fri, Feb 15, 2013 at 4:27 AM, Paul Warren <pwarren at pwarren.id.au> wrote:

> Hash: SHA1
> Hi guys,
> I just finished my first go at an entropy gathering tool for rtl-sdr,
> it's licensed under GPL (will add LICENSE file next!) and available at:
> https://github.com/pwarren/rtl-entropy
> My aim was to have a utility that ran with a minimum of dependencies,
> so it could be done easily on a raspberry pi, and without trying to
> get a whole gnuradio stack working!
> I'm not a crypto expert, but I've read enough to know that you really
> should pass the output through rng-test or similar before using.
> As I mention in the Readme, I plan on doing these tests and eventually
> getting it to the stage where the entropy can be plumbed in to
> /dev/random.
> So, thanks for making the rtl-sdr libraries and making them easy to
> work with!
> Cheers
> - --
> Paul Warren
> Version: GnuPG v1.4.12 (GNU/Linux)
> Comment: GPGTools - http://gpgtools.org
> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
> e9oAn3vQBEW7L2mcJLJE0tyNUnZpGori
> =dlzx
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