[cryptography] [liberationtech] Random number generator failure in Rasperri Pis?

David Johnston dj at deadhat.com
Fri Jul 19 11:44:47 EDT 2013

On 7/19/2013 5:44 AM, Peter Gutmann wrote:
> Eugen Leitl <eugen at leitl.org> quotes:
>> Just came accross this article, apparently showing the bad quality of the
>> hardware RNG in Raspberri Pi devices.
>> http://scruss.com/blog/2013/06/07/well-that-was-unexpected-the-raspberry-pis-hardware-random-number-generator/
> That shows the bad quality of RANDU.  It shows that the Pi randomness source
> seems OK, at least as determined by rngtest.
But I haven't seen anything from the manufacturer to state how OK the 
randomness source is. A conservative model for min-entropy based on the 
circuit structure would be a start.

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