Re: [dane] Digest Algorithm Agility discussion

"Jim Schaad" <ietf@augustcellars.com> Tue, 18 March 2014 17:40 UTC

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From: "Jim Schaad" <ietf@augustcellars.com>
To: "'Mark Andrews'" <marka@isc.org>, <dane@ietf.org>
References: <alpine.LFD.2.10.1403171440540.32251@bofh.nohats.ca> <20140317222320.443521AC59@ld9781.wdf.sap.corp> <20140317225329.GK24183@mournblade.imrryr.org> <20140318112647.885B21190C03@rock.dv.isc.org>
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Date: Tue, 18 Mar 2014 10:38:22 -0700
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Subject: Re: [dane] Digest Algorithm Agility discussion
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> -----Original Message-----
> From: dane [mailto:dane-bounces@ietf.org] On Behalf Of Mark Andrews
> Sent: Tuesday, March 18, 2014 4:27 AM
> To: dane@ietf.org
> Subject: Re: [dane] Digest Algorithm Agility discussion
> 
> 
> This whole argument of weakest vs strongest was had years ago in DNSSEC
and
> quite frankly is a waste of time trying to pick the strongest as you are
often
> comparing apples and oranges.
> 
> DNSSEC validators just have a way to say "we no longer trust this
algorithm"
> and once that is set all records with that algorithm are ignored when
doing
> validation regardless of whether there is code to support that algorithm
or
> not.
> 
> DANE implementations need a way to do the same for matching type.
> 
> Stop trying to over engineer this.

+1 - At any given time this is a binary choice.  The hash algorithm either
is or is not acceptable.

Jim

> 
> Mark
> --
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742                 INTERNET: marka@isc.org
> 
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