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Re: [kitten] New Version Notification for draft-howard-gss-sanon-00.txt

Luke Howard <lukeh@padl.com> Sat, 04 April 2020 11:23 UTC

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From: Luke Howard <lukeh@padl.com>
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Date: Sat, 04 Apr 2020 22:23:08 +1100
Cc: Luke Howard <lukeh=40padl.com@dmarc.ietf.org>, "kitten@ietf.org" <kitten@ietf.org>
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Subject: Re: [kitten] New Version Notification for draft-howard-gss-sanon-00.txt
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>> Below is a specification for a simple anonymous mechanism based on
>> curve25519 that does not authenticate either initiator or acceptor.
> 
> Interesting!  When would this be useful in SASL?  GS2 requires that the
> mechanism supports mutual authentication, so while I definitely see
> value in having this as a GSS-API mechanism I don't understand when it
> would provide value for a SASL application, and how it would actually
> work in GS2.

I hadn’t really thought through the GS2 use case, to be honest. Remind me (sorry if it’s a dumb question) why GS2 requires mutual?

It does support channel bindings because the key derivation includes the channel binding application data.

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