[Cryptech Tech] Some sampled noise and entropy collected

[Joachim Strömbergson]

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Aloha!

I've continued to work on the FPGA part of the avalanche based entropy
source. I've gotten a Salea Logic 16 and connected it to the output of
the (second) sample register for the noise generated by Fredriks board.

The second probe is connected to the LSB of the entropy register that is
updated with the LSB of the free running counter when we detect a
positive flank in the noise.

The included image shows a bit of the collected data. It seems that the
noise toggles in excess of 200 kHz and the entropy toggles at more than
50 kHZ.

I can save the data sampled, the question is if I easily can use it for
analysis?

I will add a coretest + serial interface for data word extraction
tomorrow and on Friday. But it would be cool to just grab the data from
Logic and start doing analysis right now.

Pretty screen dump included.

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
========================================================================
 Joachim Strömbergson          Secworks AB          joachim at secworks.se
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