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Re: [MLS] [ratchet tree update example]

Pascal Junod <pascalj@snap.com> Tue, 08 October 2019 07:33 UTC

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From: Pascal Junod <pascalj@snap.com>
Date: Tue, 08 Oct 2019 09:33:12 +0200
Message-ID: <CAPOUjt6y5umCrTG5w+qBBKhcOq-H=48ja4yL0SbLMMYhRz90Vg@mail.gmail.com>
To: Benjamin Beurdouche <benjamin.beurdouche@inria.fr>
Cc: Pascal Junod <pascalj=40snap.com@dmarc.ietf.org>, ML Messaging Layer Security <mls@ietf.org>
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Subject: Re: [MLS] [ratchet tree update example]
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Thank you for the quick feedback! I just pushed a PR fixing the spec
document.

On Mon, Oct 7, 2019 at 10:17 PM Benjamin Beurdouche <
benjamin.beurdouche@inria.fr> wrote:

> Hi Pascal,
>
> I think you are right, it should indeed be a single ciphertext of ps[2]
> under pkF.
> It might be that a previous example had a blanked F, which is not the case
> here.
>
> I’ll double check in the morning and fix it. :)
> Thanks !
>
> B.
>
> On Oct 7, 2019, at 1:09 PM, Pascal Junod <
> pascalj=40snap.com@dmarc.ietf.org> wrote:
>
> Hello,
>
> I have a quick question about the example discussed through the "Ratchet
> Tree Updates" and "Synchronizing Views of the Tree" sections.
>
> Currently, an encryption of ps[2] under public keys of nodes C and D is
> described. In my opinion, it should be a single ciphertext encrypted with
> public key F, whose corresponding private key is known by both C and D.
> Or did I misunderstood something?
>
> Best,
>
> Pascal
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