[Cryptech Tech] Avalanche noise test boards

Benedikt Stockebrand bs at stepladder-it.com
Sat Aug 23 14:02:56 UTC 2014


Hi Bernd and list,

Bernd Paysan <bernd at net2o.de> writes:

>> what I'm somewhat disappointed about is that they still use Yarrow; it's
>> been ten years ago or so that Schneier et al. proposed Fortuna as its
>> successor, due to some rather nasty limitations of Yarrow.
>
> Well, and the world moved since the last 10 years. 

...which only makes it worse, yes.

Anyway, what I found particularly interesting when it came to Yarrow
vs. Fortuna is that Yarrow needs you to provide an estimate of how much
entropy your noise contains, while Fortuna is done in such a way that it
doesn't need that.


Cheers,

    Benedikt

-- 
Benedikt Stockebrand,                   Stepladder IT Training+Consulting
Dipl.-Inform.                           http://www.stepladder-it.com/

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