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A comment on The NSA’s Hidden Spy Hubs in Eight U.S. Cities. Parent comment

Re:The NSA’s Hidden Spy Hubs in Eight U.S. Cities by AndrewKemendo on Monday June 25, 2018 @04:59PM (#17395747)
On it's face such a scheme seems theoretically robust, but for frequency correlation only. I'd be curious if in practice it would be possible to eliminate all other variability though, of which there are many. For example I'm unaware of any true solution to latency triangulation.

My hunch is that it wouldn't be possible, and there would be a side-channel vulnerability somewhere.

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Re:The NSA’s Hidden Spy Hubs in Eight U.S. Cities by schoen on Monday June 25, 2018 @05:01PM (#17395756)
I'm not proposing a low-latency interactive approach, so latency triangulation shouldn't apply. In my example mechanism, we always have to wait a full day until sending any reply, so there's no event that an attacker can use to measure latency from.

Edit: the beginning of this research is the Dining Cryptographers.

https://en.wikipedia.org/wiki/Dining_cryptographers_problem

Although Chaum's solution has terrible availability properties, it's unconditionally secure against outsiders!

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