[Cryptech Tech] PCB prototyping machine [Was: BCP prototyping machine]

Joachim Strömbergson joachim at secworks.se
Wed Feb 25 20:35:21 UTC 2015


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Aloha!

Benedikt Stockebrand wrote:
> Out of curiosity: How much bandwidth to we actually need between the 
> CPU/RAM part and the FPGA(s)?  I understand that EIM is something
> other than I2C (relax Joachim, everything is fine, no need to get
> excited:-), but what throughput do we actually need/use there?

;-)

I'm cool.

The actual performance we need is not really clear yet from the
requirements. The big drivers we have in the use cases are being able to
do things like sha256+RSA2048. The performance for that will be
dominated by the RSA2048.

Right now we are running the EIM with 16-bit data with @ 66MHz (if I
remember correctly). And the cores are running at 50 MHz. This is
probably good enough for the alpha board. If I could wish for something
for the alpha board it would be to extend EIM to 32 bit data with. And
possibly increase core frequency to 66 MHz. That should give plenty of
oomph.

- -- 
Med vänlig hälsning, Yours

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