[Cryptech Tech] Entropy source delivered

[Bernd Paysan]

Am Mittwoch, 20. August 2014, 19:54:31 schrieb Fredrik Thulin:
> For example, it seems his (and others) circuit deliver around 20 kbit/s of
> entropy, while mine currently only delivers 4700 bits/s (extracted from
> 130,000 edges/s - a lot of them thrown away to decrease correlation).

Hm, can you dump and make available the raw edges, i.e. in a form of (n cycles 
high/m cycles low) for analysis why you have to throw away so many? With 130k-
edges/s and taking only 1 bit per edge, feeding into a von Neumann extractor 
should still give you ~60-70kbit/s.  Benedict takes 1 bit per every 4th edge 
(due to microcontroller limitations), so that's why he ends up with 20kbit/s 
after the von Neumann extractor.

-- 
Bernd Paysan
"If you want it done right, you have to do it yourself"
http://bernd-paysan.de/
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