[ietf-dkim] Modified Introduction text for rfc4871-errata (resend)

[Bill.Oxley at cox.com]

Well it would be nice if i=author.net and d=3rd.party.signer.isp.com but no one agreed so I'll shut up now :-)

-----Original Message-----
From: ietf-dkim-bounces at mipassoc.org [mailto:ietf-dkim-bounces at mipassoc.org] On Behalf Of Steve Atkins
Sent: Tuesday, June 16, 2009 6:14 PM
To: DKIM WG
Subject: Re: [ietf-dkim] Modified Introduction text for rfc4871-errata (resend)


On Jun 16, 2009, at 2:35 PM, Michael Thomas wrote:
>
>
> 1) People saying that d= is THE IDENTIFIER are overloading the
> value: d= a routing
>    label to a particular DNS subtree. Whether it has anything to do
> with THE
>    IDENTIFIER is purely coincidental. The assumption that these two
> functions are
>    identical is bogus. i= was supposed to be this stable value
> detached from the
>    mechanical DNS routing function.

Are you confusing the d= value and the DNS node (including selectors and
suchlike) that the public key lives at?

The d= value has been the persistent identifier for the signer since
day one,
while the i= value is a more specific value that the signer can
optionally use.

Given that the RHS of i= is either identical or a subdomain of d= it's
nonsensical
to consider i= more stable than d=, as i= must change if d= does.


Cheers,
   Steve

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