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Re: [DNSOP] Comments regarding the NSEC5

Jan Včelák <jan.vcelak@nic.cz> Thu, 12 March 2015 10:26 UTC

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From: Jan Včelák <jan.vcelak@nic.cz>
To: dnsop@ietf.org
Date: Thu, 12 Mar 2015 11:26:01 +0100
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Cc: Florian Weimer <fweimer@redhat.com>, Paul Hoffman <paul.hoffman@vpnc.org>
Subject: Re: [DNSOP] Comments regarding the NSEC5
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On Wednesday, March 11, 2015 10:02:31 AM Paul Hoffman wrote:
> Proposal: until there is evidence that there is a community that needs the
> features of NSEC5 that cannot be easily replicated in NSEC3, this WG does
> not consider a protocol change that would require every resolver to be
> updated.

I think that's reasonable.

On the other hand, I would still appreciate some feedback on the proposed 
NSEC/NSEC3 -> NSEC5 transition mechanism, which is currently quite painful and 
I consider it the weakest point of the proposal. I believe that finding an 
alternative would make NSEC5 acceptable for more people.

Currently, the transition is done the same way as in NSEC -> NSEC3, using the 
DNSKEY algorithm aliases. That time it was easy - only two aliases were 
allocated for RSA and DSA with SHA-1. Right now, we have at least four 
suitable algorithms: RSA with SHA-{256,512} and ECDSA P-{256,384}.

Jan

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