Re: [Dance] CRLs/OCSP and DANE at RIPE84

Michael Richardson <mcr+ietf@sandelman.ca> Wed, 25 May 2022 20:40 UTC

Return-Path: <mcr+ietf@sandelman.ca>
X-Original-To: dance@ietfa.amsl.com
Delivered-To: dance@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id AA4BFC07B7A5 for <dance@ietfa.amsl.com>; Wed, 25 May 2022 13:40:42 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.899
X-Spam-Level:
X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Y4s5kNZEV13K for <dance@ietfa.amsl.com>; Wed, 25 May 2022 13:40:41 -0700 (PDT)
Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id CD1E5C07B7A2 for <dance@ietf.org>; Wed, 25 May 2022 13:40:41 -0700 (PDT)
Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id 4082A38B4D; Wed, 25 May 2022 16:55:06 -0400 (EDT)
Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 4WrYz5vCIq6O; Wed, 25 May 2022 16:55:05 -0400 (EDT)
Received: from sandelman.ca (unknown [172.30.2.21]) by tuna.sandelman.ca (Postfix) with ESMTP id ED8C338B37; Wed, 25 May 2022 16:55:04 -0400 (EDT)
Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id 3E338383; Wed, 25 May 2022 16:40:37 -0400 (EDT)
From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Jim Fenton <fenton@bluepopcorn.net>, Shumon Huque <shuque@gmail.com>, dance <dance@ietf.org>
In-Reply-To: <924BEB7A-1155-4C79-9F62-BA84BB09BEB6@bluepopcorn.net>
References: <887547.1653131902@dooku> <CAHPuVdXED50HMmBzkPCRa6pTqUnD8FA_upyWSMZy9OBt=q1GfA@mail.gmail.com> <19724.1653397933@localhost> <CAHPuVdWNe-SFZmRDB5nORs+3fFWgGLVyZKxFSOGx95j4wBpjUA@mail.gmail.com> <924BEB7A-1155-4C79-9F62-BA84BB09BEB6@bluepopcorn.net>
X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 27.1
X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m<nPbLgmtKK-5dC@#:k
MIME-Version: 1.0
Content-Type: multipart/signed; boundary="=-=-="; micalg="pgp-sha512"; protocol="application/pgp-signature"
Date: Wed, 25 May 2022 16:40:37 -0400
Message-ID: <23517.1653511237@localhost>
Archived-At: <https://mailarchive.ietf.org/arch/msg/dance/7uFvUWAWWsMQsXG4BvSaZdBGp0I>
Subject: Re: [Dance] CRLs/OCSP and DANE at RIPE84
X-BeenThere: dance@ietf.org
X-Mailman-Version: 2.1.34
Precedence: list
List-Id: DANE Authentication for Network Clients Everywhere <dance.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dance>, <mailto:dance-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dance/>
List-Post: <mailto:dance@ietf.org>
List-Help: <mailto:dance-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dance>, <mailto:dance-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 25 May 2022 20:40:42 -0000

Jim Fenton <fenton@bluepopcorn.net> wrote:
    >> Michael, if you use DANE, you get DNS based revocation automatically.
    >> The mechanism is simply to remove or update the TLSA etc record, and the
    >> previously referenced certificate or key in the record will be invalidated
    >> at the
    >> time scale of the TTL.

    > I wouldn’t call that revocation. I would describe that as (typically) a
    > short validity period. One advantage is that it isn’t necessary to

Nor would I.
It's a short lifetime.

We probably need to talk about this for client authentication.

--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide