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Re: [kitten] On SASL's authzid

Nico Williams <nico@cryptonector.com> Mon, 10 March 2014 17:48 UTC

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Date: Mon, 10 Mar 2014 12:48:34 -0500
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From: Nico Williams <nico@cryptonector.com>
To: "Cantor, Scott" <cantor.2@osu.edu>
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Cc: "kitten@ietf.org" <kitten@ietf.org>
Subject: Re: [kitten] On SASL's authzid
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On Mon, Mar 10, 2014 at 12:26 PM, Cantor, Scott <cantor.2@osu.edu> wrote:
> On 3/10/14, 1:21 PM, "Ryan Troll" <rtroll@googlers.com> wrote:
>
>>Google uses the user= field as an authzid.  It identifies the mailbox
>>being accessed, and the session terminates at the server responsible for
>>that mailbox.
>>In the future, if a client provided users with the ability to log in as
>>user A and read mailbox B, we would want to know identity B.  Which
>>certainly appears to be the authzid.
>>Scott - does this help?
>
> It helps me, in the sense that both those use cases seem pretty clearly
> exactly what authzid is. They have literally nothing to do with OAuth or
> this mechanism, and would apply to any mechanism Google supported.

Agreed.  I think it's settled: user= is an authzid.

Nico
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