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Re: [kitten] draft-perez-krb-wg-gss-preauth

Luke Howard <lukeh@padl.com> Tue, 03 August 2021 03:47 UTC

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From: Luke Howard <lukeh@padl.com>
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Date: Tue, 3 Aug 2021 13:47:38 +1000
In-Reply-To: <24346b50-09d5-f4b6-f5fe-7790809a7fe7@mit.edu>
Cc: Luke Howard <lukeh=40padl.com@dmarc.ietf.org>, "kitten@ietf.org" <kitten@ietf.org>, Alejandro Perez Mendez <alex@um.es>
To: Greg Hudson <ghudson@mit.edu>
References: <919B7645-005D-417B-AF1E-EDF165E94BAC@padl.com> <24346b50-09d5-f4b6-f5fe-7790809a7fe7@mit.edu>
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Subject: Re: [kitten] draft-perez-krb-wg-gss-preauth
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Hi Greg,

That sounds like a great idea, although obviously it will require FAST for multiple round-trip GSS mechanisms. I’ve provisionally implemented it in Heimdal, albeit using its existing KDCFastState (below).

-- KDCFastState is stored in FX_COOKIE
KDCFastState ::= SEQUENCE {
        flags [0] KDCFastFlags,
        expiration [1] GeneralizedTime,
        fast-state [2] METHOD-DATA,
        expected-pa-types [3] SEQUENCE OF PADATA-TYPE OPTIONAL
}

Cheers,
Luke


Luke Howard
web <http://lukehoward.com/> / facebook <https://www.facebook.com/lukehowardmusic> / instagram <http://instagram.com/lukehowardmusic/> / spotify <https://open.spotify.com/artist/3duTXsC49HoPt4f4EySDKf>

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