Re: Fwd: [kitten] Call for adoption: draft-bouchez-scram-mcf-02 (Ends 2026-06-17)

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From: Thilo Molitor <[email protected]>
To: XMPP Standards <[email protected]>
Date: Tue, 23 Jun 2026 10:39:43 +0200
Message-ID: <6322046.f3c93Lcl2Z@laptop>
MIME-Version: 1.0

Apparently your message never appeared on the IETF kitten list, so my reply 
was naturally only sent to this list, too.

-tmolitor



Am Montag, 22. Juni 2026, 15:01:09 CEST schrieb Dave Cridland:
> You'll need to say as much on the kitten list, sorry! The reply-to is set
> to standards@ for this thread.
> 
> On Mon, 22 Jun 2026 at 13:25, Thilo Molitor <[email protected]> wrote:
> > Yes,I'd like to implement that in Monal as soon as any servers support
> > that.
> > 
> > -tmolitor
> > 
> > Am 22. Juni 2026 13:36:02 MESZ schrieb Dave Cridland <[email protected]>:
> >> Is there any interest in the XMPP community for an MCF-based SCRAM?
> >> 
> >> If so, is there any interest in working on this within the Kitten IETF
> >> Working Group?
> >> 
> >> Dave.
> >> 
> >> ---------- Forwarded message ---------
> >> From: Alexey Melnikov via Datatracker <[email protected]>
> >> Date: Wed, 3 Jun 2026 at 16:19
> >> Subject: [kitten] Call for adoption: draft-bouchez-scram-mcf-02 (Ends
> >> 2026-06-17)
> >> To: <[email protected]>, <[email protected]>, <
> >> [email protected]>
> >> 
> >> 
> >> As some interest was expressed in this document,
> >> this message starts a kitten WG Call for Adoption of:
> >> draft-bouchez-scram-mcf-02.
> >> 
> >> This Working Group Call for Adoption ends on 2026-06-17
> >> 
> >> Abstract:
> >>    This document specifies SCRAM-MCF, an extension to the Salted
> >>    Challenge Response Authentication Mechanism (SCRAM) family of SASL
> >>    mechanisms ([RFC5802]) and HTTP Digest extensions ([RFC7616],
> >>    [RFC7677]).
> >>    
> >>    The extension replaces the PBKDF2-specific iteration count attributes
> >>    i= and s= in the server-first-message with a generic Modular Crypt
> >>    Format (MCF) descriptor f=. This allows servers to use modern memory-
> >>    hard key derivation functions such as Argon2, SCrypt, or bcrypt while
> >>    preserving the full security properties and message flow of SCRAM.
> >>    
> >>    The change is fully backward compatible: servers can continue sending
> >>    i= and s= for legacy clients and only send f= (or both) when the
> >>    client advertises support.
> >>    
> >>    This document is intended to be discussed and potentially adopted by
> >>    the KITTEN working group.  Feedback from the KITTEN WG is welcome on
> >>    the [email protected] mailing list.
> >> 
> >> Please reply to this message and indicate whether or not you support
> >> adoption
> >> of this Internet-Draft by the kitten WG. Comments to explain your
> >> preference
> >> are greatly appreciated. Please reply to all recipients of this message
> >> and
> >> include this message in your response.
> >> 
> >> Authors, and WG participants in general, are reminded of the Intellectual
> >> Property Rights (IPR) disclosure obligations described in BCP 79 [2].
> >> Appropriate IPR disclosures required for full conformance with the
> >> provisions
> >> of BCP 78 [1] and BCP 79 [2] must be filed, if you are aware of any.
> >> Sanctions available for application to violators of IETF IPR Policy can
> >> be
> >> found at [3].
> >> 
> >> Thank you.
> >> [1] https://datatracker.ietf.org/doc/bcp78/
> >> [2] https://datatracker.ietf.org/doc/bcp79/
> >> [3] https://datatracker.ietf.org/doc/rfc6701/
> >> 
> >> The IETF datatracker status page for this Internet-Draft is:
> >> https://datatracker.ietf.org/doc/draft-bouchez-scram-mcf/
> >> 
> >> There is also an HTML version available at:
> >> https://www.ietf.org/archive/id/draft-bouchez-scram-mcf-02.html
> >> 
> >> A diff from the previous version is available at:
> >> https://author-tools.ietf.org/iddiff?url2=draft-bouchez-scram-mcf-02
> >> 
> >> _______________________________________________
> >> Kitten mailing list -- [email protected]
> >> To unsubscribe send an email to [email protected]
> > 
> > _______________________________________________
> > Standards mailing list -- [email protected]
> > To unsubscribe send an email to [email protected]
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