Re: [MLS] TreeKEM: An alternative to ART

Eric Rescorla <ekr@rtfm.com> Thu, 03 May 2018 18:43 UTC

Return-Path: <ekr@rtfm.com>
X-Original-To: mls@ietfa.amsl.com
Delivered-To: mls@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C4F1E129C6C for <mls@ietfa.amsl.com>; Thu, 3 May 2018 11:43:01 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.908
X-Spam-Level:
X-Spam-Status: No, score=-1.908 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, T_DKIMWL_WL_MED=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=rtfm-com.20150623.gappssmtp.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ug51x2XXYyao for <mls@ietfa.amsl.com>; Thu, 3 May 2018 11:42:59 -0700 (PDT)
Received: from mail-ot0-x236.google.com (mail-ot0-x236.google.com [IPv6:2607:f8b0:4003:c0f::236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id CA15012DA06 for <mls@ietf.org>; Thu, 3 May 2018 11:42:59 -0700 (PDT)
Received: by mail-ot0-x236.google.com with SMTP id 15-v6so6959983otn.12 for <mls@ietf.org>; Thu, 03 May 2018 11:42:59 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rtfm-com.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=k8ZTyJnM3zxt6vyjUJ03/5Y+E0m9ho8B4qbu7OBv4ao=; b=0f5Pbwfu/z11Kh31jBmP12yKbPlhIQYUCGo3/d82VgxfAgwrTSpBt06aY8T84Of0Ay 5YSlXu2fgGAPKMHBTntTOYTtC1FlcNI0gWWbmHX5URr7rcRII3O8YlWvb8ZqjNYhcN9c v2bFdzHp32W2T76yZ3SHnl4jgMyLeWfDlDUymx7YEhMq0QPL0Ov1oH7sIU5x46JbgsCn E0ekP1w3rNA7SZA9aVohDf7qTDbVcjbNeZPfpHyS8QHk5bwU+u5ImERHxa/CNzBWVJFL xf4V3R9If4wM2ANLWSH3Xhd6R3Azyo/ZxZGLxM/rhTdGEnI+xwSAZOOHpH7Vh5qRSE1e bCdw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=k8ZTyJnM3zxt6vyjUJ03/5Y+E0m9ho8B4qbu7OBv4ao=; b=rynWstikSI5WzesgbJ4QYLzMxIZoVIKdNULe3nIdqvvWnVq4ZX1ClqRCvQjLoN05Hr LwXcRTB1erm2Kk6ZH8tlFomYHfIhaeToGzXdPWDDpQ0jObaTEurdasooMWWkvMLx9Ak3 D+XhNPqlwlfU/Pn54wfQeonhv9HbN/lVxAFTP6nxAqxDnbl9UrU/mb9N3rSVHRyDbc3G wgbgTeuGCaZ3fngXf/++Z8bZA4f2om8md8Jrk3PQtdJTFUo3z0E8Df1x4HtgGOyAPqDp 3HEqnz6hxJ+nh0qeNxY9DqKkuwgau9YnVbDVcvOjmgSJDCGpUogPU3DJC1avyNZWINcZ QGTA==
X-Gm-Message-State: ALQs6tAGx7P5fuVeZVemndIaEargL32EAF0eEvZzwTFaxiVuw7pNsFoj bQ8sxUaQ0k5PZbvb9A6quVAPGG5NgTh8awkavpDHoA==
X-Google-Smtp-Source: AB8JxZoVbZkiYi5V0Bol53KkPpa4x2t4rgzAWyK9BjZlqjdUDTy5ctaqEesArXy8zNLSy73jikU24BCYWxuJPxiabaM=
X-Received: by 2002:a9d:5917:: with SMTP id t23-v6mr14388689oth.217.1525372979107; Thu, 03 May 2018 11:42:59 -0700 (PDT)
MIME-Version: 1.0
Received: by 10.201.118.130 with HTTP; Thu, 3 May 2018 11:42:18 -0700 (PDT)
In-Reply-To: <ce5b8b9b-3551-eca2-998b-28696009786b@KingsMountain.com>
References: <ce5b8b9b-3551-eca2-998b-28696009786b@KingsMountain.com>
From: Eric Rescorla <ekr@rtfm.com>
Date: Thu, 03 May 2018 11:42:18 -0700
Message-ID: <CABcZeBMrrxuqSBB9cRx8bMRnYQFAED9g=+UNV0L_Ehn7A6-c7g@mail.gmail.com>
To: =JeffH <Jeff.Hodges@kingsmountain.com>
Cc: mls@ietf.org
Content-Type: multipart/alternative; boundary="00000000000091ec23056b51927c"
Archived-At: <https://mailarchive.ietf.org/arch/msg/mls/qwt_95HuF5mn3R88QGq8NVXX8Yc>
Subject: Re: [MLS] TreeKEM: An alternative to ART
X-BeenThere: mls@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: Messaging Layer Security <mls.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/mls>, <mailto:mls-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/mls/>
List-Post: <mailto:mls@ietf.org>
List-Help: <mailto:mls-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/mls>, <mailto:mls-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 03 May 2018 18:43:02 -0000

Yes.

On Thu, May 3, 2018 at 11:22 AM, =JeffH <Jeff.Hodges@kingsmountain.com>
wrote:

> just to test my understanding, ART is "Asynchronous Ratcheting Tree" and
> this is "the ART paper":
>
> On Ends-to-Ends Encryption:
> Asynchronous Group Messaging with Strong Security Guarantees
> Katriel Cohn-Gordon
> Cas Cremers
> Luke Garratt
> Jon Millican
> and Kevin Milner
> https://eprint.iacr.org/2017/666.pdf
>
> _______________________________________________
> MLS mailing list
> MLS@ietf.org
> https://www.ietf.org/mailman/listinfo/mls
>