Re: [DNSOP] future-proofing (Re: Working Group Last Call for: Message Digest for DNS Zones)

2020-01-08 Thread Michael StJohns
On 1/8/2020 4:22 PM, Wessels, Duane wrote: On Jan 8, 2020, at 12:20 PM, Paul Vixie wrote: can we please not put the ZONEMD RR at the apex, or else, can we please add an ALG-ID to its rdata. because some day we're going to ship different kinds of MD's, one of which is today's full-zone travers

Re: [DNSOP] future-proofing (Re: Working Group Last Call for: Message Digest for DNS Zones)

2020-01-08 Thread Wessels, Duane
> On Jan 8, 2020, at 12:20 PM, Paul Vixie wrote: > > can we please not put the ZONEMD RR at the apex, or else, can we please add > an > ALG-ID to its rdata. because some day we're going to ship different kinds of > MD's, one of which is today's full-zone traversal-required version that > op

Re: [DNSOP] future-proofing (Re: Working Group Last Call for: Message Digest for DNS Zones)

2020-01-08 Thread Brian Dickson
On Wed, Jan 8, 2020 at 12:20 PM Paul Vixie wrote: > [thread fork; subject changed] > > i've brought this up several times including in response to the very first > draft version. i'd like to be sure it's been considered and rejected by > the > dns technical community, rather than merely forgotten

[DNSOP] future-proofing (Re: Working Group Last Call for: Message Digest for DNS Zones)

2020-01-08 Thread Paul Vixie
[thread fork; subject changed] i've brought this up several times including in response to the very first draft version. i'd like to be sure it's been considered and rejected by the dns technical community, rather than merely forgotten. ZONEMD as drafted is not incremental. so to compute it, th

Re: [DNSOP] Working Group Last Call for: Message Digest for DNS Zones

2020-01-08 Thread John R Levine
On Wed, 8 Jan 2020, Michael StJohns wrote: I'm running a private copy of the root zone for my organization. I (automated) check the SOA every so often, and arrange for a download of the zone when it changes.    I (automated) get a copy of the zone data, including an ZONEMD RR, everything valida

Re: [DNSOP] Working Group Last Call for: Message Digest for DNS Zones

2020-01-08 Thread Michael StJohns
On 1/8/2020 2:07 PM, John R Levine wrote: Could you give me a b) for each of these please?   E.g. How does ZONEMD make your life better in each of these and what would happen if you - in a future world - were getting ZONEMD data and validation failed? Unless someone else says they find this l

Re: [DNSOP] [Ext] Working Group Last Call for: Message Digest for DNS Zones

2020-01-08 Thread Michael StJohns
On 1/7/2020 10:05 PM, Brian Dickson wrote: My $0.02 on the size issue: I think the onus should be on whoever is publishing a zone with a ZONEMD to provide guidance on what to do if a failure occurs. Similarly, publishers should be sensible on whether to include a ZONEMD based on total size and

Re: [DNSOP] Working Group Last Call for: Message Digest for DNS Zones

2020-01-08 Thread Michael StJohns
On 1/7/2020 6:38 PM, Wessels, Duane wrote: On Jan 6, 2020, at 6:15 PM, Michael StJohns wrote: This specification utilizes ZONEMD RRs located at the zone apex. Non-apex ZONEMD RRs are not forbidden, but have no meaning in this specification. Instead - "non-apex ZONEMD RRs MUST b

Re: [DNSOP] Working Group Last Call for: Message Digest for DNS Zones

2020-01-08 Thread Michael StJohns
On 1/7/2020 6:01 PM, Wessels, Duane wrote: On Jan 6, 2020, at 6:15 PM, Michael StJohns wrote: 5) 3.1.2 - This is I believe different than how DNSSEC does it? If it's the same, then this is fine, otherwise this protocol should be calculating the RRSet wire representation the same as DNSS

Re: [DNSOP] Working Group Last Call for: Message Digest for DNS Zones

2020-01-08 Thread Michael StJohns
On 1/7/2020 5:33 PM, Wessels, Duane wrote: On Jan 6, 2020, at 6:15 PM, Michael StJohns wrote: As I suggested in one of my messages, giving an idea of how long it takes to digest various sizes of zones given commodity hardware would be a good start. Going on and talking about the ratio of

Re: [DNSOP] Working Group Last Call for: Message Digest for DNS Zones

2020-01-08 Thread John R Levine
Could you give me a b) for each of these please?   E.g. How does ZONEMD make your life better in each of these and what would happen if you - in a future world - were getting ZONEMD data and validation failed? Unless someone else says they find this level of anecdotal detail useful, I'll pass.

Re: [DNSOP] Working Group Last Call for: Message Digest for DNS Zones

2020-01-08 Thread Michael StJohns
On 1/6/2020 9:36 PM, John Levine wrote: In article <7f298591-09b5-dd7c-0dab-afc60def8...@nthpermutation.com> you write: OK.� The point is not to self-approve, but to get a few other non-authors to actually see if they can figure out what you're talking about here and whether they're ever going t

Re: [DNSOP] SHA-1 is a Shambles: First Chosen-Prefix Collision on SHA-1

2020-01-08 Thread Viktor Dukhovni
On Wed, Jan 08, 2020 at 08:50:05AM -0800, Ólafur Guðmundsson wrote: > Due to the structure of DNS records this is hard to pull off, Yes, at present. > The only RR types that are suspect are the ones that can have 1440 of > "garbage" at the end Yes, at present, but the attacks may continue to im

Re: [DNSOP] SHA-1 is a Shambles: First Chosen-Prefix Collision on SHA-1

2020-01-08 Thread Viktor Dukhovni
On Tue, Jan 07, 2020 at 11:18:08AM -0500, Viktor Dukhovni wrote: > This does not mean that staying with algorithm 7 (RSASHA1) is a good > idea, but may buy more time to migrate in an orderly manner. A thread today on dns-operations seems to suggest there's some confusion about which uses of SHA-1

Re: [DNSOP] SHA-1 is a Shambles: First Chosen-Prefix Collision on SHA-1

2020-01-08 Thread Ólafur Guðmundsson
On Tue, Jan 7, 2020, 8:18 AM Viktor Dukhovni wrote: > On Tue, Jan 07, 2020 at 02:54:43PM +, Tony Finch wrote: > > > The third paragraph of the abstract suggests this is relevant to DNSSEC > RSASHA1: > > > > https://eprint.iacr.org/2020/014 > > [ I've Bcc'd the authors, perhaps they'll follow

Re: [DNSOP] [Ext] Working Group Last Call for: Message Digest for DNS Zones

2020-01-08 Thread Bob Harold
On Tue, Jan 7, 2020 at 10:06 PM Brian Dickson wrote: > > > On Tue, Jan 7, 2020 at 6:18 PM Paul Hoffman > wrote: > >> On Jan 7, 2020, at 6:03 PM, Joe Abley > > wrote: >> > I don't object to the intended status (standards track). There are >> reports of multiple independent implementations include

Re: [DNSOP] SVCB wire format (draft-ietf-dnsop-svcb-httpssvc-01)

2020-01-08 Thread Miek Gieben
[ Quoting in "Re: [DNSOP] SVCB wire format (draft..." ] There are 0 or more sub TLV fields. so, there equal when not specified and then diverge? I think the draft can be more clear in this regard. And maybe some text on why the TXT encoding wasn't choosen as that seemed to worked for SPF. _