[Cryptech Tech] Novena and entropy provider status

[Joachim Strömbergson]

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Aloha!

Some short status updates.

I've created a new Novena FPGA test project (needs be committed to the
Cryptech repo) based on The Novena coretest hashes project. I replaced
sha256 and sha512 and with the avalanche_entropy and the rosc_entropy
cores respectively. I also connected the noise input port to the
physical pin on the header selected by Fredrik for his board. The build
went fine and design was downloaded into the FPGA.

Testing shows that both cores are present, I can read out their name and
version strings.

The big news is that Fredriks noise board seems to work just fine. When
I read from the entropy register in the core and have the board mounted
I get different values all the time. If I remove the board I get the
same values every time I. And connecting the board again I get different
values again. Good work Fredrik.

Now, we are fairly far from knowing how well the entropy source actually
works on the Novena. What data rate we get and what quality. That
however is 'just' a matter of coding, collecting data and doing
analysis. The HW is there.

When it comes to the rosc source, the results are less rosy. The core is
there. But reading the generated entropy or directly from the
oscillators just results in all zero values. It seems very dead. Need to
debug this (again).

Not all bad thogh, I'd say.

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
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