Bill,
Thanks for your reply, but I’m not sure you fully understand the situation I am
attempting to resolve.
For example, does an access token obtained via the “client_credentials” request
with the following SCOPE parameter:
BulkID=04
allow a client to ask for resources when the individual access token contained
the following SCOPE parameter:
FB=4_5_15;IntervalDuration=900;BlockDuration=monthly;HistoryLength=13
The question is what individual access token authorization should be covered by
the “client_credentials” based access token?
Best regards,
Don
Donald F. Coffin
Founder/CTO
REMI Networks
22751 El Prado Suite 6216
Rancho Santa Margarita, CA 92688-3836
Phone: (949) 636-8571
Email: <mailto:donald.cof...@reminetworks.com>
donald.cof...@reminetworks.com
From: Bill Mills [mailto:wmills_92...@yahoo.com]
Sent: Saturday, February 15, 2014 8:30 PM
To: Donald Coffin; oauth@ietf.org
Cc: greenbutton-dev
Subject: Re: [OAUTH-WG] Scope parameter values for "authorization_code" and
"client_credentials" based access tokens
To tokens themselves don't differ based on how they are obtained unless you
want them to. No requirement to match scope to the client ID either, but again
it's up to you.
You do want to get this right. The challenge here is that your resource
servers have to get updated to support new scopes. If they support
auto-updates then it's not quite as big a deal but it's still non-trivial.
-bill
On Saturday, February 15, 2014 7:01 PM, Donald Coffin
<donald.cof...@reminetworks.com> wrote:
I would like to get the views and comments of the OAuth 2.0 IETF WG on the
following design and implementation question:
I have an application that supports both “authorization_code” and
“client_credentials” based access tokens. The application allows a client to
obtain data on a nightly basis for resource owners who have granted the
application access to their data. The client application retrieves energy
usage information and can potentially need to retrieve data from a few accounts
to several million accounts. In order to eliminate the need for the client
application to request the data from the resource server one account at a time,
the client application has been designed to support “client_credentials” based
access tokens. Per [RFC 6749 Section 4.4 – “Client Credentials Grant”] The use
of the “client_credentials” based access token will allow the client
application to obtain access to the data with a single request, thus
significantly reducing the amount of network traffic for both the client and
the resource server.
The question the design team is struggling with is what should the Scope string
be for the “client_credentials” based access token and should there be a single
access token or can there be multiple “client_credentials” based access tokens?
The client application currently supports the following Scope definitions:
· FB=4_5_15;IntervalDuration=900;BlockDuration=monthly;HistoryLength=13
· FB=4_5_16;IntervalDuration=900;BlockDuration=monthly;HistoryLength=13
There are several allowable values for the FB=, IntervalDuration=,
BlockDuration=, and HistoryLength= values. At the moment, there are only two
defined Scope values, but as you can see, there could easily be many more
potential possibilities.
The question being discussed, is does the “client_credentials” access token
request Scope parameter need to match either of the above two strings or can it
be something altogether different? In the event the “client_credentials”
access token request Scope parameter needs to match a defined Scope string,
does that mean that there MUST be multiple “client_credentials” based access
tokens?
Thanks in advance for helping clarify our understanding of the relationship
between “authorization_code” and “client_credentials” based access tokens.
Best regards,
Don
Donald F. Coffin
Founder/CTO
REMI Networks
22751 El Prado Suite 6216
Rancho Santa Margarita, CA 92688-3836
Phone: (949) 636-8571
Email: donald.cof...@reminetworks.com
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