Re: [DNSOP] Benjamin Kaduk's No Objection on draft-ietf-dnsop-multi-provider-dnssec-04: (with COMMENT)
Shumon Huque <shuque@gmail.com> Thu, 09 April 2020 20:34 UTC
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From: Shumon Huque <shuque@gmail.com>
Date: Thu, 09 Apr 2020 16:34:19 -0400
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To: Brian Dickson <brian.peter.dickson@gmail.com>
Cc: Benjamin Kaduk <kaduk@mit.edu>, The IESG <iesg@ietf.org>, draft-ietf-dnsop-multi-provider-dnssec@ietf.org, "dnsop@ietf.org WG" <dnsop@ietf.org>, DNSOP chairs <dnsop-chairs@ietf.org>, Benno Overeinder <benno@nlnetlabs.nl>
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Subject: Re: [DNSOP] Benjamin Kaduk's No Objection on draft-ietf-dnsop-multi-provider-dnssec-04: (with COMMENT)
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On Thu, Apr 9, 2020 at 3:48 PM Brian Dickson <brian.peter.dickson@gmail.com> wrote: > > On Wed, Apr 8, 2020 at 10:10 PM Benjamin Kaduk via Datatracker < > noreply@ietf.org> wrote: > >> >> Section 6.1, 6.2 >> >> Should we say anything about when it's safe for a new ZSK to be used to >> sign responses? >> > > I think, technically speaking, it is always safe to use a new ZSK, and the > only concern is when it's safe to remove and/or revoke the old ZSK (i.e. > that it is safe to use ONLY the new ZSK.) > Hi Brian, Your statement is true for double signature ZSK rolls (which are less common). In the pre-publish ZSK rollover scheme (much more common), the new ZSK starts signing new or modified data in the zone _exclusively_, and the corresponding old ZSK signatures are yanked out, after "propagation time + DNSKEY TTL time" has transpired. So if you do this too early, data in your zone could become unvalidatable. This is described in RFC6781, although the description is a quite dated -- since it talks about monolithic re-signing of zone data, and does not contemplate incremental signing, which is becoming far more common these days. Shumon.
- [DNSOP] Benjamin Kaduk's No Objection on draft-ie… Benjamin Kaduk via Datatracker
- Re: [DNSOP] Benjamin Kaduk's No Objection on draf… Shumon Huque
- Re: [DNSOP] Benjamin Kaduk's No Objection on draf… Brian Dickson
- Re: [DNSOP] Benjamin Kaduk's No Objection on draf… Shumon Huque
- Re: [DNSOP] Benjamin Kaduk's No Objection on draf… Benjamin Kaduk
- Re: [DNSOP] Benjamin Kaduk's No Objection on draf… Shumon Huque