[ubuntu-hardened] authenticated NTP

[proper at tormail.net]

> You might be interested in https://github.com/ioerror/tlsdate, "secure
> parasitic rdate replacement".
> Although, it probably isn't "ready for use production use TM".

I aware of it, but I was more hoping for an official statement from the
security team... Like for example...
"We already use authenticated NTP."
"Authenticated NTP is planed."
"We would like to use authenticated NTP, but we can't..."
"Unauthenticated NTP can not be used for MITM, it is already secure, you
are paranoid, get lost."

But I am mostly ignored and the interest in this topic seams very little.