Phil, I think what you're bringing up is a red herring. Everyone that does OAuth today does "discovery" in some manner or another, even if it's not specified to be dynamic like it is in OIDC. Most of the time this happens manually, out of band. For instance, a number of our clients here have historically done "discovery" of the server's capabilities by the client developers just pasting in all the URLs and parameters to their application's configuration. They get these values from the server documentation. Just because a piece of information needs to be known doesn't mean that it needs to be automatically discovered at runtime.

And yes, we are using it in a plain-OAuth context here, in addition to an OIDC context. This is using the same server code, for what its worth.

I also take issue with your contention that it will "double the operational cost" -- how so? If you don't want to enforce the token_endpoint_auth_method, just don't have your clients send it and don't have the server return it. It's optional for a reason -- if you don't like it or have no use for it, don't use it.

 -- Justin

On 05/20/2013 01:51 PM, Phil Hunt wrote:
-1

The draft has features that are unclear and will double the operational cost. The fact that it works doesn't mean it is ready from the wg perspective.

For the production use, has anyone outside of oidc implemented and placed in production?

As a non-oidc implementer, I can't make the same assumptions (like discovery) that oidc umplementers have.

Phil

On 2013-05-20, at 9:48, Mike Jones <michael.jo...@microsoft.com <mailto:michael.jo...@microsoft.com>> wrote:

The deployment evidence doesn’t support your position, Phil. There are over a dozen interoperable implementations already deployed. Those deployments demonstrate that the spec, as written, is already doing one thing well – enabling clients (as defined by RFC 6749) to register with Authorization Servers, obtaining client_id and optionally client_secret values that enable those clients to use those Authorization Servers. Doing one thing well is exactly what we should be striving for, and the evidence says that we’ve achieved that.

It’s time to ship it!

-- Mike

*From:*oauth-boun...@ietf.org <mailto:oauth-boun...@ietf.org> [mailto:oauth-boun...@ietf.org] *On Behalf Of *Justin Richer
*Sent:* Monday, May 20, 2013 9:42 AM
*To:* Phil Hunt
*Cc:* oauth@ietf.org <mailto:oauth@ietf.org>
*Subject:* Re: [OAUTH-WG] Proposed Syntax Changes in Dynamic Registration

I, of course, disagree. But that's what we're trying to figure out as a working group, after all.

 -- Justin

On 05/20/2013 12:41 PM, Phil Hunt wrote:

    This draft isn't ready for LC.

    Phil


    On 2013-05-20, at 8:49, Justin Richer <jric...@mitre.org
    <mailto:jric...@mitre.org>> wrote:

        But also keep in mind that this is last-call, and that we
        don't really want to encourage avoidable drastic changes at
        this stage.

         -- Justin

        On 05/20/2013 11:21 AM, Phil Hunt wrote:

            Keep in mind there may be other changes coming.

            The issue is that new developers can't figure out what
            token is being referred to.


            Phil


            On 2013-05-20, at 8:09, Justin Richer <jric...@mitre.org
            <mailto:jric...@mitre.org>> wrote:

                Phil Hunt's review of the Dynamic Registration
                specification has raised a couple of issues that I
                felt were getting buried by the larger discussion
                (which I still strongly encourage others to jump in
                to). Namely, Phil has suggested a couple of syntax
                changes to the names of several parameters.


                1) expires_at -> client_secret_expires_at
                2) issued_at -> client_id_issued_at
                3) token_endpoint_auth_method ->
                token_endpoint_client_auth_method


                I'd like to get a feeling, *especially from
                developers* who have deployed this draft spec, what
                we ought to do for each of these:

                 A) Keep the parameter names as-is
                 B) Adopt the new names as above
                 C) Adopt a new name that I will specify

                In all cases, clarifying text will be added to the
                parameter *definitions* so that it's more clear to
                people reading the spec what each piece does.
                Speaking as the editor: "A" is the default as far as
                I'm concerned, since we shouldn't change syntax
                without very good reason to do so. That said, if it's
                going to be better for developers with the new
                parameter names, I am open to fixing them now.

                Naming things is hard.

                 -- Justin

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