In fact, this is the method being used by utilities implementing the Green Button Connect My Data interface (North American Energy Standards Boards' (NAESB) Retail Energy Quadrant 21 (REQ.21) Standard (Energy Service Provider Interface - ESPI). The Green Button Alliance is in the processing of updating the specification to use OAuth 2.0. The industry OpenADE Task Force, which is the technical WG of the UCAIug, defined additional information be returned with the OAuth 2.0 Token Response that includes the URI of the resource to which the AT can be used.
Best regards, Don Donald F. Coffin Founder/CTO REMI Networks 2335 Dunwoody Xing #E Dunwoody, GA 30338-8221 Phone: (949) 636-8571 Email: <mailto:donald.cof...@reminetworks.com> donald.cof...@reminetworks.com From: Vladimir Dzhuvinov [mailto:vladi...@connect2id.com] Sent: Thursday, February 25, 2016 2:23 AM To: oauth@ietf.org Subject: Re: [OAUTH-WG] OAuth 2.0 Discovery Location On 25/02/16 09:02, Manger, James wrote: I'm concerned that forcing the AS to know about all RS's endpoints that will accept it's tokens creates a very brittle deployment architecture The AS is issuing temporary credentials (access_tokens) to clients but doesn't know where those credentials will work? That's broken. An AS should absolutely indicate where an access_token can be used. draft-sakimura-oauth-meta suggests indicating this with 1 or more "ruri" (resource URI) values in an HTTP Link header. A better approach would be including a list of web origins in the token response beside the access_token field. +1 This will appear more consistent with the current experience, and OAuth does allow the token response JSON object to be extended with additional members (as it's done in OpenID Connect already). Cheers, Vladimir -- James Manger From: OAuth [mailto:oauth-boun...@ietf.org] On Behalf Of George Fletcher Sent: Thursday, 25 February 2016 6:17 AM To: Phil Hunt <mailto:phil.h...@oracle.com> <phil.h...@oracle.com>; Nat Sakimura <mailto:sakim...@gmail.com> <sakim...@gmail.com> Cc: <mailto:oauth@ietf.org> <oauth@ietf.org> <mailto:oauth@ietf.org> <oauth@ietf.org> Subject: Re: [OAUTH-WG] OAuth 2.0 Discovery Location I'm concerned that forcing the AS to know about all RS's endpoints that will accept it's tokens creates a very brittle deployment architecture. What if a RS moves to a new endpoint? All clients would be required to get new tokens (if I understand correctly). And the RS move would have to coordinate with the AS to make sure all the timing is perfect in the switch over of endpoints. I suspect a common deployment architecture today is that each RS requires one or more scopes to access it's resources. The client then asks the user to authorize a token with a requested list of scopes. The client can then send the token to the appropriate RS endpoint. The RS will not authorize access unless the token has the required scopes. If the concern is that the client may accidentally send the token to a "bad" RS which will then replay the token, then I'd rather use a PoP mechanism because the point is that you want to ensure the correct client is presenting the token. Trying to ensure the client doesn't send the token to the wrong endpoint seems fraught with problems. Thanks, George _______________________________________________ OAuth mailing list OAuth@ietf.org <mailto:OAuth@ietf.org> https://www.ietf.org/mailman/listinfo/oauth
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