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To: Derek Atkins <warlord@MIT.EDU>
Cc: Edward Lewis <lewis@tislabs.com>, <dnssec@cafax.se>
From: Jakob Schlyter <jakob@crt.se>
Date: Tue, 4 Sep 2001 22:21:40 +0200 (MEST)
In-Reply-To: <sjmvgiyrdql.fsf@rcn.ihtfp.org>
Sender: owner-dnssec@cafax.se
Subject: Re: CERTificates and public keys

On 4 Sep 2001, Derek Atkins wrote:

> It would be less confusing than having to have each app decide whether
> it's looking for a 'Cert' or 'Appkey' record when it wants to look for
> a key in the DNS.  Having a single place to look is a Good Thing (TM).

speaking as one of the few people who has actually written software that
uses DNSSEC for application security, both KEY and CERT, I must say this
is wrong.

the application knows what it's looking for. if I'm trying to look up a
X.509 certificate, I'll use CERT. if I'm trying to look up a raw ssh host
key or a IPsec/IKE host key, I'll use APPKEY. my trust model probably also
depends on what kind of information I ask for, if the answer was signed
and if it had it's signature as well.

	jakob


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