Re: [MLS] Deniability as external to the MLS protocol
Benjamin Beurdouche <benjamin.beurdouche@inria.fr> Fri, 13 November 2020 15:41 UTC
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From: Benjamin Beurdouche <benjamin.beurdouche@inria.fr>
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Date: Fri, 13 Nov 2020 16:41:00 +0100
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Cc: Sofía Celi <cherenkov@riseup.net>, mls@ietf.org
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To: Raphael Robert <raphael=40wire.com@dmarc.ietf.org>
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Subject: Re: [MLS] Deniability as external to the MLS protocol
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I am supportive of that change as well. B. > On Nov 13, 2020, at 4:27 PM, Raphael Robert <raphael=40wire.com@dmarc.ietf.org> wrote: > > Thanks Sofia! > > I think this is exactly what we need to achieve optional deniability for message authorship without touching the authentication guarantees of the the core protocol. > > Raphael > >> On 13 Nov 2020, at 16:01, Sofía Celi <cherenkov@riseup.net> wrote: >> >> Dear all, >> >> As you know, we had many discussions on deniability and solving this >> problem is not an easy task, as evidence of this thread. To make sure we >> can work on this optional feature in the future, without modifying the >> core protocol, we believe that there are no changes needed to be added >> to the core protocol. Some minor relaxing of the phrasing in the >> document might be useful, though, and might help for future features as >> well, so I have submitted PR #437 >> (https://github.com/mlswg/mls-protocol/pull/437). This rephrasing should >> allow deniability of application messages by allowing the usage of >> deniable signature keys. Please, let us know of any comments regarding it. >> >> Thank you, >> >> >> -- >> Sofía Celi >> @claucece >> http://claucece.github.io/ >> Cryptographic research and implementation at many places, but mainly at >> Cloudflare >> FAB9 3EDC 7CDD 1198 DCFD 4558 91BB 6B45 6F44 2D02 >> >> _______________________________________________ >> MLS mailing list >> MLS@ietf.org >> https://www.ietf.org/mailman/listinfo/mls > > _______________________________________________ > MLS mailing list > MLS@ietf.org > https://www.ietf.org/mailman/listinfo/mls
- [MLS] Deniability as external to the MLS protocol Richard Barnes
- Re: [MLS] Deniability as external to the MLS prot… Chelsea Komlo
- Re: [MLS] Deniability as external to the MLS prot… Raphael Robert
- Re: [MLS] Deniability as external to the MLS prot… Sofía Celi
- Re: [MLS] Deniability as external to the MLS prot… Raphael Robert
- Re: [MLS] Deniability as external to the MLS prot… Benjamin Beurdouche
- Re: [MLS] Deniability as external to the MLS prot… Natanael