Re: [secdir] [xmpp] SecDir review of draft-ietf-xmpp-3920bis-17
Kurt Zeilenga <Kurt.Zeilenga@Isode.COM> Tue, 02 November 2010 14:13 UTC
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From: Kurt Zeilenga <Kurt.Zeilenga@Isode.COM>
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Date: Tue, 02 Nov 2010 07:13:14 -0700
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To: Peter Saint-Andre <stpeter@stpeter.im>
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Cc: Security Area Directorate <secdir@ietf.org>, The IESG <iesg@ietf.org>, XMPP Working Group <xmpp@ietf.org>, "draft-ietf-xmpp-3920bis.all@tools.ietf.org" <draft-ietf-xmpp-3920bis.all@tools.ietf.org>
Subject: Re: [secdir] [xmpp] SecDir review of draft-ietf-xmpp-3920bis-17
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On Nov 2, 2010, at 5:12 AM, Peter Saint-Andre wrote: > On 11/2/10 5:20 AM, Yaron Sheffer wrote: >> I'm OK with this text, including (sigh) PLAIN. > > If it's any consolation, I'm sighing along with you. :) > > Two points: > > 1. Eventually, we should be able to drop PLAIN in a future revision of > the MTI technologies spec that we'll pull out of 3920bis in 1+ years. Good luck with that. The arguments used now for its inclusion is likely to be repeated and, again, win. Personally, I am against MUST'ing or SHOULD'ing TLS+PLAIN. While it does offer good interoperability, it does good enough security for today's, and more importantly, tomorrow's Internet. I think we actually should be mandating a SCRAM-*-PLUS mechanism, because channeling bindings are really needed due to 'user click through' of TLS warnings, downgrade attack warnings, etc.. I do suspect that it will take time for this mechanism to be come ubiquitous, but I fear that without a MUST, it will never become ubiquitous. But I do suspect well have multiple independently developed implementations of SCRAM-*-PLUS in XMPP within a few months of publication of this revision of XMPP. I suspect I'm in the rough on both points. Oh well. > 2. The technology that the XMPP community uses for account registration > (XEP-0077) could benefit from an update, or even a replacement, and when > that work is completed I'd like to include a method by which a client > could register a key or cert with the server, thus smoothing the path > toward password-less authentication. IMHO that will be the best approach > in the longer term, instead of continually tweaking the password-based > methods. But that's a topic for another time... I also think transition-needed needs to be deprecated in favor of transition within the bound channel (e.g., today via XEP 77, tomorrow ?). > > Peter > > -- > Peter Saint-Andre > https://stpeter.im/ > > > > _______________________________________________ > xmpp mailing list > xmpp@ietf.org > https://www.ietf.org/mailman/listinfo/xmpp
- [secdir] SecDir review of draft-ietf-xmpp-3920bis… Yaron Sheffer
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Yaron Sheffer
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Yaron Sheffer
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Yaron Sheffer
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Yaron Sheffer
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Peter Saint-Andre
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Peter Saint-Andre
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Peter Saint-Andre
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Peter Saint-Andre
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Florian Zeitz
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Peter Saint-Andre
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Dave Cridland
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Dave Cridland
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Yaron Sheffer
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Yaron Sheffer
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Yaron Sheffer
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Kurt Zeilenga
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Kurt Zeilenga
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Kurt Zeilenga
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Kurt Zeilenga
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Kurt Zeilenga
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Jeffrey Hutzelman
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Kurt Zeilenga
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Kurt Zeilenga
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Yaron Sheffer
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre
- Re: [secdir] SecDir review of draft-ietf-xmpp-392… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Ben Campbell
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Ben Campbell
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Matthew Wild
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Philipp Hancke
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint Andre
- Re: [secdir] [xmpp] SecDir review of draft-ietf-x… Peter Saint-Andre