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    This is interesting work, but doesn’t OpenNTPD’s constraints feature provide the same benefits (protection against MITM and NTP servers going rogue) while being much simpler and without requiring dedicated servers?

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      Using TLS to bootstrap the clock to bootstrap TLS cert checking… A bit circular. :) It works, but it has some weak spots.

      For comparison, ntpd still has the design of using a trusted server. It doesn’t really try building consensus. And if your ntp packets go out of whack, you can’t be sure if it’s a rogue server or mitm. It looks like rough time could be used for even narrower constraints.