Re: [DNSOP] Terminology: IDN

Edward Lewis <edward.lewis@icann.org> Mon, 04 May 2015 15:13 UTC

Return-Path: <edward.lewis@icann.org>
X-Original-To: dnsop@ietfa.amsl.com
Delivered-To: dnsop@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 88B131A1BF6 for <dnsop@ietfa.amsl.com>; Mon, 4 May 2015 08:13:29 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.21
X-Spam-Level:
X-Spam-Status: No, score=-4.21 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, T_RP_MATCHES_RCVD=-0.01] autolearn=ham
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 PhVH-g6TcCKy for <dnsop@ietfa.amsl.com>; Mon, 4 May 2015 08:13:28 -0700 (PDT)
Received: from out.west.pexch112.icann.org (pfe112-ca-2.pexch112.icann.org [64.78.40.10]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 626CE1A1BE0 for <dnsop@ietf.org>; Mon, 4 May 2015 08:13:26 -0700 (PDT)
Received: from PMBX112-W1-CA-1.pexch112.icann.org (64.78.40.21) by PMBX112-W1-CA-1.pexch112.icann.org (64.78.40.21) with Microsoft SMTP Server (TLS) id 15.0.1044.25; Mon, 4 May 2015 08:13:14 -0700
Received: from PMBX112-W1-CA-1.pexch112.icann.org ([64.78.40.21]) by PMBX112-W1-CA-1.PEXCH112.ICANN.ORG ([64.78.40.21]) with mapi id 15.00.1044.021; Mon, 4 May 2015 08:13:14 -0700
From: Edward Lewis <edward.lewis@icann.org>
To: Paul Hoffman <paul.hoffman@vpnc.org>, dnsop WG <dnsop@ietf.org>
Thread-Topic: [DNSOP] Terminology: IDN
Thread-Index: AQHQhnrxz6jQTbM2wkKQLpSLHV/8+Z1sHvqA
Date: Mon, 04 May 2015 15:13:13 +0000
Message-ID: <D16D027D.B573%edward.lewis@icann.org>
References: <3FB18AE0-8769-4B73-9964-8F0D1AB1FA54@vpnc.org>
In-Reply-To: <3FB18AE0-8769-4B73-9964-8F0D1AB1FA54@vpnc.org>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
user-agent: Microsoft-MacOutlook/14.4.9.150325
x-ms-exchange-transport-fromentityheader: Hosted
x-originating-ip: [192.0.47.235]
Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg="sha1"; boundary="B_3513582787_37440782"
MIME-Version: 1.0
Archived-At: <http://mailarchive.ietf.org/arch/msg/dnsop/oxVJhbqh2GJZe_K2mgjCCE72sRk>
Subject: Re: [DNSOP] Terminology: IDN
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.15
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: <http://www.ietf.org/mail-archive/web/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: Mon, 04 May 2015 15:13:29 -0000

I'm going to ask this as a question, not a comment, directed to those who
know something about IDN.

Isn't IDNA2008 a "convention" on top of the representation?  And, this
isn't about display, it's about, well, encapsulation, maybe?  And isn't
IDN tied to Unicode?

I ask for a few reasons - "non-ASCII" might include raw binary or bit
encodings other than Unicode.
The punycode algorithm maps Unicode (code points) to DNS-label compatible
strings.  (No-case, etc.)
IDNA 2008 is a treatment of labels generated by the punycode algorithm to
achieve a number of other goals.

(I guarantee you I am missing something in the above, like Normalization
Forms and such.)

When I use "IDN" I think of a representation of a Unicode string in a DNS
label according to a bunch of conventions.  Perhaps IDN is taking on a
wider meaning.  I don't know.

On 5/4/15, 10:58, "Paul Hoffman" <paul.hoffman@vpnc.org> wrote:

>Greetings. As I was removing the definition of ccTLDs based on the recent
>discussion, I realized that there was no stand-alone definition of IDNs.
>Proposal:
>
>IDN --- The common abbreviation for "internationalized domain name". IDNs
>are the standard
>mechanism for displaying names with non-ASCII characters in applications.
>The standard,
>normally called "IDNA2008", is defined in {{RFC5890}}, {{RFC5891}},
>{{RFC5892}},
>{{RFC5893}}, and {{RFC5894}}.
>
>--Paul Hoffman
>_______________________________________________
>DNSOP mailing list
>DNSOP@ietf.org
>https://www.ietf.org/mailman/listinfo/dnsop