Re: [DNSOP] [internet-drafts@ietf.org: I-D Action: draft-rescorla-tls-esni-00.txt]

Patrick McManus <pmcmanus@mozilla.com> Thu, 19 July 2018 17:47 UTC

Return-Path: <pmcmanus@mozilla.com>
X-Original-To: dnsop@ietfa.amsl.com
Delivered-To: dnsop@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 26513130EB1; Thu, 19 Jul 2018 10:47:23 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.234
X-Spam-Level:
X-Spam-Status: No, score=-1.234 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, SPF_SOFTFAIL=0.665] autolearn=no autolearn_force=no
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 PC1RQH9gFiZc; Thu, 19 Jul 2018 10:47:21 -0700 (PDT)
Received: from linode64.ducksong.com (www.ducksong.com [192.155.95.102]) by ietfa.amsl.com (Postfix) with ESMTP id DD231130EEE; Thu, 19 Jul 2018 10:47:20 -0700 (PDT)
Received: from mail-oi0-f54.google.com (mail-oi0-f54.google.com [209.85.218.54]) by linode64.ducksong.com (Postfix) with ESMTPSA id 2DCFC3A028; Thu, 19 Jul 2018 13:47:20 -0400 (EDT)
Received: by mail-oi0-f54.google.com with SMTP id d189-v6so16520508oib.6; Thu, 19 Jul 2018 10:47:20 -0700 (PDT)
X-Gm-Message-State: AOUpUlGQPZhV8mR+dO7YTn5NBSsrKmsj2QqhgGC2EdeLxu6MnrofNjZ8 KK2bjapFZUoHL+VRqjPwrRqQBQQ71YIyqRtV5XQ=
X-Google-Smtp-Source: AAOMgpfp2kcLXVtieXGdH6Tabocs/77soYenTJnWf2CYEDj3nBOipOn7uRXBoo+i6oeEr9KAnH4ngK8AqUOXWSNRCYg=
X-Received: by 2002:aca:2e86:: with SMTP id u128-v6mr384279oiu.132.1532022439900; Thu, 19 Jul 2018 10:47:19 -0700 (PDT)
MIME-Version: 1.0
Received: by 2002:a4a:8a22:0:0:0:0:0 with HTTP; Thu, 19 Jul 2018 10:47:19 -0700 (PDT)
In-Reply-To: <CAM1xaJ_jcMunvfuqqgoe-5hTSE1t=A4ELWF1j0SBsztoZ_1S=w@mail.gmail.com>
References: <20180707191900.7jjaxklib3tlixgb@nic.fr> <CAM1xaJ_jcMunvfuqqgoe-5hTSE1t=A4ELWF1j0SBsztoZ_1S=w@mail.gmail.com>
From: Patrick McManus <pmcmanus@mozilla.com>
Date: Thu, 19 Jul 2018 13:47:19 -0400
X-Gmail-Original-Message-ID: <CAOdDvNpWs3_+c3=pdYjxm+UrEfBUawcTKXY4ks0VbuGSts+q7Q@mail.gmail.com>
Message-ID: <CAOdDvNpWs3_+c3=pdYjxm+UrEfBUawcTKXY4ks0VbuGSts+q7Q@mail.gmail.com>
To: =?UTF-8?B?SmFuIFbEjWVsw6Fr?= <jv@fcelda.cz>
Cc: dnsop <dnsop@ietf.org>, draft-rescorla-tls-esni@ietf.org
Content-Type: multipart/alternative; boundary="000000000000517e8605715dc574"
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/SbPcCiJLPK5TezVIhIVXwgHCkz8>
Subject: Re: [DNSOP] [internet-drafts@ietf.org: I-D Action: draft-rescorla-tls-esni-00.txt]
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.27
Precedence: list
List-Id: IETF DNSOP WG mailing list <dnsop.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dnsop>, <mailto:dnsop-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dnsop/>
List-Post: <mailto:dnsop@ietf.org>
List-Help: <mailto:dnsop-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dnsop>, <mailto:dnsop-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 19 Jul 2018 17:47:23 -0000

On Thu, Jul 19, 2018 at 1:36 PM, Jan Včelák <jv@fcelda.cz> wrote:

> Hey,
>
> I just scanned the draft and focused mainly on the DNS bits. The
> described method for publishing encryption keys for SNI in DNS won't
> allow use of wildcard domain names.
>
>
Thanks!

I believe the draft is OK on this point because wildcards aren't needed.
While certificates can be valid for wildcard domains, the SNI is always a
specific hostname (and the plaintext hostname informs the DNS question)