[dns-operations] Disclosure of root zone TSIG keys

Shane Kerr shane at time-travellers.org
Fri May 29 09:29:30 UTC 2020


Duane,

I really appreciate this level of transparency, thank you.

This does make me think of a couple of questions.


First, I assume that the main goal of TSIG is to prevent modification of 
the zone file(s) in transit, more than preventing access. The root zone 
is public, right?

Since the goal is to prevent modification, I guess the root server 
operators could fetch PGP signatures from the Internic server and verify 
the zone today. Do you know if there is any documentation covering the 
operational practices of the root server operators in this regard?

In the future, adding message digests (draft-ietf-dnsop-dns-zone-digest) 
to the zones and having both that and the DNSSEC signatures verified by 
root server operators before accepting a new version of the root zone 
would be a nice additional check. (Whoever thought of those digests 
seems really on-the-ball. 😉)


Second, while it is nice that there are IP-based whitelists protecting 
zone transfers, are there any requirements for IP's on the whitelists to 
use RPKI or other routing protections? Even if there are no 
requirements, does Verisign check RPKI if the root server operators *do* 
sign their routes? We know that there is BGP hijacking in the wild 
today, so using and encouraging secured routing seems reasonable to me.


Thanks again for the transparency and keep up the good work! 😆

--
Shane


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