Re: [saag] subordinate vs intermediate certification authority

Michael Richardson <mcr+ietf@sandelman.ca> Sat, 06 February 2021 20:49 UTC

Return-Path: <mcr+ietf@sandelman.ca>
X-Original-To: saag@ietfa.amsl.com
Delivered-To: saag@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 645243A2BD0 for <saag@ietfa.amsl.com>; Sat, 6 Feb 2021 12:49:03 -0800 (PST)
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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham 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 JLzk20rxN3gl for <saag@ietfa.amsl.com>; Sat, 6 Feb 2021 12:49:01 -0800 (PST)
Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 333623A2BD1 for <saag@ietf.org>; Sat, 6 Feb 2021 12:49:00 -0800 (PST)
Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id F26EC389A9 for <saag@ietf.org>; Sat, 6 Feb 2021 15:52:03 -0500 (EST)
Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id WsoAYHPX5Oxt for <saag@ietf.org>; Sat, 6 Feb 2021 15:52:03 -0500 (EST)
Received: from sandelman.ca (obiwan.sandelman.ca [209.87.249.21]) by tuna.sandelman.ca (Postfix) with ESMTP id 88C77389A7 for <saag@ietf.org>; Sat, 6 Feb 2021 15:52:03 -0500 (EST)
Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id 6AAEF585 for <saag@ietf.org>; Sat, 6 Feb 2021 15:48:59 -0500 (EST)
From: Michael Richardson <mcr+ietf@sandelman.ca>
To: saag@ietf.org
In-Reply-To: <YBxbTimNirbmrDc0@straasha.imrryr.org>
References: <30833.1612411843@localhost> <YBt8izjlBu+nAtsN@straasha.imrryr.org> <12683.1612458802@localhost> <YBxbTimNirbmrDc0@straasha.imrryr.org>
X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 26.1
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: Sat, 06 Feb 2021 15:48:59 -0500
Message-ID: <3441.1612644539@localhost>
Archived-At: <https://mailarchive.ietf.org/arch/msg/saag/GjqxeMa7FS__DdRVTwl1xlnOGRY>
Subject: Re: [saag] subordinate vs intermediate certification authority
X-BeenThere: saag@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Security Area Advisory Group <saag.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/saag>, <mailto:saag-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/saag/>
List-Post: <mailto:saag@ietf.org>
List-Help: <mailto:saag-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/saag>, <mailto:saag-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 06 Feb 2021 20:49:03 -0000

Viktor Dukhovni <ietf-dane@dukhovni.org> wrote:
    > The NIST terminology mentioned in this thread makes intermediate a
    > subclass of subordinate, where intermediate CAs issue subordinate CA
    > certs, rather than end-entity certs.

Yes, this comment made me go back and re-read the definition again, and a
light went on.

    > My take is that the terminology is all over the place, and I mostly
    > don't care, but where you need to be precise, you need to carefully
    > state the definitions that hold in your document...

It sure seems like might be a place where doing it once (in a new document) might help.

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