Re: [stir] current draft charter - ENUM and databases

"Lee, Yiu" <Yiu_Lee@Cable.Comcast.com> Wed, 19 June 2013 13:14 UTC

Return-Path: <yiu_lee@cable.comcast.com>
X-Original-To: stir@ietfa.amsl.com
Delivered-To: stir@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4A8A221F9C2B for <stir@ietfa.amsl.com>; Wed, 19 Jun 2013 06:14:43 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -5.231
X-Spam-Level:
X-Spam-Status: No, score=-5.231 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, HOST_EQ_MODEMCABLE=1.368, RCVD_IN_DNSWL_MED=-4]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NsG2j0lazBKD for <stir@ietfa.amsl.com>; Wed, 19 Jun 2013 06:14:37 -0700 (PDT)
Received: from cable.comcast.com (copdcavout01.cable.comcast.com [76.96.32.253]) by ietfa.amsl.com (Postfix) with ESMTP id 7227721F9C25 for <stir@ietf.org>; Wed, 19 Jun 2013 06:14:37 -0700 (PDT)
Received: from ([24.40.56.115]) by copdcavout01.cable.comcast.com with ESMTP id C7WM3M1.78104272; Wed, 19 Jun 2013 07:14:01 -0600
Received: from PACDCEXMB05.cable.comcast.com ([169.254.7.207]) by PACDCEXHUB02.cable.comcast.com ([fe80::492e:3fa1:c2ad:e04e%13]) with mapi id 14.02.0318.001; Wed, 19 Jun 2013 09:14:34 -0400
From: "Lee, Yiu" <Yiu_Lee@Cable.Comcast.com>
To: "stir@ietf.org" <stir@ietf.org>
Thread-Topic: [stir] current draft charter - ENUM and databases
Thread-Index: AQHObO7wwSlmpMZitUyhAdakrHC3YQ==
Date: Wed, 19 Jun 2013 13:14:32 +0000
Message-ID: <E3FAB1F4F41F3A45B287E8D9C53522FD472CEA44@PACDCEXMB05.cable.comcast.com>
In-Reply-To: <8C77C05D-6ED2-4429-BF1C-72082F4ADE76@oracle.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
user-agent: Microsoft-MacOutlook/14.3.5.130515
x-originating-ip: [68.87.16.248]
Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg="sha1"; boundary="B_3454478071_12636"
MIME-Version: 1.0
Subject: Re: [stir] current draft charter - ENUM and databases
X-BeenThere: stir@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Secure Telephone Identity Revisited <stir.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/stir>, <mailto:stir-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/stir>
List-Post: <mailto:stir@ietf.org>
List-Help: <mailto:stir-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/stir>, <mailto:stir-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 19 Jun 2013 13:14:43 -0000

I am on board using dns for lookup. One question in your example: When you
receive alice@foo.com, how do you derive it to "_cid.foo.com"? Do you
suggest _cid is the tn or some other identifier?


On 6/18/13 1:36 PM, "Hadriel Kaplan" <hadriel.kaplan@oracle.com> wrote:

>I think that's still possible even for email-style names.  For example,
>when receiving a request from'alice@foo.com' we could do a DNS lookup for
>'_cid.foo.com' or some such pre-defined naming scheme, to get the
>caller-id cert for 'foo.com'; or the RR for that DNS key could redirect
>us to somewhere else if need be.  Or we could do an HTTP automatically
>for 'http://foo.com/cid', or even 'http://foo.com/cid/ldkjhlashl' where
>the last part is a hash of the username.