[Cryptech Tech] road to berlin

[Joachim Strömbergson]

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Aloha!

Paul Selkirk wrote:
> Commands will probably include:
...
> - create master key - list keys - show stats
...
> 6. AVR tamper detection: We have an ATTiny828 connected to the
> Master Key Memory, and to a tamper circuit (currently a push-button
> labeled PANIC). When the unit is tampered, it should wipe the MKM,
> and ideally interrupt the STM32. This seems simple enough, but we
> haven't gotten around to it yet.

Regarding MKM and tamper. I've almost done with the RTL design for a
first, very limited mkmif module. The current version will only support
reading and writing 32-bit words to the specific Microchip memory.
(including mem init and mem command handlingt). I've got 10 chips of the
specific type from Mouser and are modifying one of the old entropy
boards to connect it to the Novena.

When this works we can add tamoer-zeroisation functionality etc. But for
the bring up we should at least have something to test the MKM
functionality from the FPGA with.

- -- 
Med vänlig hälsning, Yours

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