Comment by advisedwang
18 hours ago
How does a client know what public key to expect for a given domain, then?
If they key is distributed by DNS, then you need to secure DNS, e.g. with DNSSEC. Well, with DNSSEC the TLDs and root basically have the same status as CAs (although it does cut down the huge number of CAs that can issue certs).
It does, but you also lose 100% of the accountability. eMudhra is leaving this business because the root programs are about to humiliate them. There are no programs anywhere that can do the same thing to a major TLD operator.
If ICANN decides you no longer operate the TLD, and takes your name servers out of the root server zones and replaces them with somebody else's... you don't run that TLD any more, sorry, go have a good cry and then see if maybe running a hot dog stand is more your speed. DNSSEC is one of the services ICANN considers critical enough to take away your TLD stewardship if you aren't providing that service properly.
Of course we wouldn't want ICANN to do that on a whim, or without having a new operator for the TLD ready to go, but there's already process defined for both planned and emergency transfers of operation of a TLD:
https://www.icann.org/en/contracted-parties/registry-operato...
ICANN is not going to tell the USG (or, for identical reasons, Verisign) that it no longer operates .COM. This particular deus ex machina is fanciful.
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