[MLS] PCS guarantees of ART/MLS versus groups based on pairwise Signal
Cas Cremers <cas.cremers@gmail.com> Fri, 10 May 2019 18:47 UTC
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From: Cas Cremers <cas.cremers@gmail.com>
Date: Fri, 10 May 2019 20:47:03 +0200
Message-ID: <CABdrxL5XDte3RwVARHY+Sy3LPoDFQ6-cJj4TXuyA4VV8rLjAGA@mail.gmail.com>
To: ML Messaging Layer Security <mls@ietf.org>
Cc: "Hale, Britta (CIV)" <britta.hale@nps.edu>, Konrad Kohbrok <konrad.kohbrok@aalto.fi>
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Subject: [MLS] PCS guarantees of ART/MLS versus groups based on pairwise Signal
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Dear all, We (Britta+Konrad+myself) have been exploring the subtleties of PCS guarantees across groups (so not just within a single group). This has brought up some stark differences between "groups using only pairwise channels" and the ART/MLS approach. We wrote up an extended abstract, which is available here: https://ia.cr/2019/477 We can perhaps discuss this at the interim in Berlin. (We have more substantial text drafted that we left out for now and are working towards a full paper.) Best wishes, Cas Cremers & Britta Hale & Konrad Kohbrok