On Mon, Feb 1, 2016 at 1:07 PM Fredrik Thulin <fred...@thulin.net> wrote:
> Hi > > > > The suggestion has been made to remove the external RTC chip currently on > the Alpha schematics, and instead just rely on the RTC inside the ARM. > > > > The end of the discussion last time was Basil asking which chip was more > likely to be possible to tamper with. I think the answer is "they are both > pretty easy to tamper with if you have code execution privileges in the > ARM". > Probably a stupid idea, but what about using *both*? If the time between the 2 RTCs is >N, assume some shenanigans? Based on how quickly RTCs seems to drift, this may end up with lots of false positives though.... W > > > OK to remove external chip? The internal RTC is likely easier to interface > with, so it saves us engineering time. > > > > /Fredrik > > > _______________________________________________ > Tech mailing list > Tech@cryptech.is > https://lists.cryptech.is/listinfo/tech >
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