alt Hacker NewsA secure DNS is valuable whether or not we get rid of CAs, since CAs rely on DNS queries to verify domain ownership.
And if we have a secure DNS, then CAs are completely redundant. I'd much rather trust a handful of domain registrars than a handful of domain registrars, plus 100 random questionably competent organisations all over the world. Especially when any one of them can generate keys for every domain on the planet.
It seems a nice thing to have indeed, but domain registrars have already a history to cede control and bend to $GOVERNMENT. We have countries already trying to MiTM all their citizens by mandating CAs injection in every device under their jurisdiction, what would be the defense against this threat in a world where registrars hold the keys to TLS encryption for the web on the TLDs they own as root? I'm not that expert in this field so I really would like to learn if it's possible.