On Tuesday, April 26, 2016 11:07:11 AM Joachim Strömbergson wrote: > 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.
Thanks to you too! Let me know if I can help you with some hacked together hardware, or something else. > 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. Yes, definitely important to test the FPGA <-> MKM early. /Fredrik
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