IETF Logo Mail Archive

Re: [saag] ASN.1 vs. DER Encoding

Russ Housley <housley@vigilsec.com> Mon, 22 April 2019 23:54 UTC

Return-Path: <housley@vigilsec.com>
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 0AD91120266 for <saag@ietfa.amsl.com>; Mon, 22 Apr 2019 16:54:57 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.9
X-Spam-Level:
X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001] 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 u84USPIUzCMs for <saag@ietfa.amsl.com>; Mon, 22 Apr 2019 16:54:54 -0700 (PDT)
Received: from mail.smeinc.net (mail.smeinc.net [209.135.209.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 58286120224 for <saag@ietf.org>; Mon, 22 Apr 2019 16:54:54 -0700 (PDT)
Received: from localhost (localhost [127.0.0.1]) by mail.smeinc.net (Postfix) with ESMTP id 49BF9300ABD for <saag@ietf.org>; Mon, 22 Apr 2019 19:36:36 -0400 (EDT)
X-Virus-Scanned: amavisd-new at mail.smeinc.net
Received: from mail.smeinc.net ([127.0.0.1]) by localhost (mail.smeinc.net [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 4IJwa3TlQZ_8 for <saag@ietf.org>; Mon, 22 Apr 2019 19:36:35 -0400 (EDT)
Received: from a860b60074bd.fios-router.home (unknown [138.88.156.37]) by mail.smeinc.net (Postfix) with ESMTPSA id 5AB66300471; Mon, 22 Apr 2019 19:36:35 -0400 (EDT)
Content-Type: text/plain; charset="us-ascii"
Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.8\))
From: Russ Housley <housley@vigilsec.com>
In-Reply-To: <20190422211449.GD3137@localhost>
Date: Mon, 22 Apr 2019 19:54:52 -0400
Cc: IETF SAAG <saag@ietf.org>
Content-Transfer-Encoding: quoted-printable
Message-Id: <233FB845-976C-49CA-ADA6-C97035A2426F@vigilsec.com>
References: <20190326164951.GX4211@localhost> <20190326214816.GB4211@localhost> <1553679912618.8510@cs.auckland.ac.nz> <20190327151545.GG4211@localhost> <20190330153101.GT35679@kduck.mit.edu> <C3D9DD15-AB23-4B42-BA61-A4E4CD826B77@huitema.net> <F6387640-20F3-4B3C-8E61-58CAF7828CA1@tzi.org> <269bee5d-e225-3484-04ed-3e5de6c19081@cs.tcd.ie> <CAMm+Lwi1pNje_9HMYnf-gQN8scggQDTUB0z0uCsy9trtaYKBsg@mail.gmail.com> <20190422211449.GD3137@localhost>
To: Nico Williams <nico@cryptonector.com>
X-Mailer: Apple Mail (2.3445.104.8)
Archived-At: <https://mailarchive.ietf.org/arch/msg/saag/Epm_V8HvBfzTH0bvaUMjALKYrV8>
Subject: Re: [saag] ASN.1 vs. DER Encoding
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: Mon, 22 Apr 2019 23:54:57 -0000


> And x.400/x.500 naming is an awful disaster.

They are not the same.  Once can completely avoid X.400 names, but the X.500 one are used in certificates.  I strongly encourage people to keep it simple.  The bits on the wire sitll get too complicated, but the code can mostly do exact match processing.

Russ

v2.23.0 | Report a Bug | By Email