The scalable oauth extension addresses multiple/additional resource
authorizations using the same tokens:
http://oauth.pbwiki.com/ScalableOAuth

- Praveen

On Fri, Jan 30, 2009 at 9:08 AM, Krishna Sankar (ksankar) <[email protected]
> wrote:

>
> Interesting ...
>
> IMHO, the scope (of the URL) determines the extend of capabilities
> exposed (or can be accessed) via an OAuth mechanism. (I am working on a
> few combinations of this to figure out the granularity)
>
> So if we say the scope as www.example.com/uc/vmail/1234, then only the
> voice mail #1234 can be accessed. Also there is the expiration
> associated with a token. Between these two, I think we can get very
> granular as well as temporal.
>
> Of course www.example.com/uc/presence/* could potentially open up
> presence of everyone in the company.
>
> Jorgito, did I miss something ?
>
> Cheers
> <k/>
>
> |-----Original Message-----
> |From: [email protected] [mailto:[email protected]] On Behalf
> |Of Jorgito
> |Sent: Friday, January 30, 2009 7:08 AM
> |To: OAuth
> |Subject: [oauth] Re: Distinction between Request Token and Access token
> |
> |
> |Thank you both for your fast replies.
> |
> |Indeed, I was wrong when I said that the distinction between both
> |tokens would dramatically increase the response time. I misunderstood
> |the spec, as I thought that one pair Request Token -- Access Token
> |only granted access to one protected resource (namely, one URL). I see
> |that there are no limitations in that aspect, and a single pair of
> |tokens grants access to multiple protected resources.
> |
> |I'm not sure whether this is good or not. Maybe in some Web
> |applications it would be desirable a "finer grained" protocol that can
> |grant access to some specific (and no more) resources. For example,
> |instead of the canonical example of a photo hosting service I can
> |think about a site hosting medical records - extremely confidential
> |information. I mean, there is a BIG difference between allowing an
> |application acting as Consumer to know if I've had a flu recently, and
> |giving it free access to all the information concerning my health.
> |This "all or nothing" approach taken in OAuth may not fulfill the
> |requirements of some Web applications.
> |
> |And on the other, the problem of temporal states between tokens still
> |remains. I don't know how this issue would affect to the performance
> |of large-scale Web applications. In other words, does OAuth scale
> |well?
> |
> |Thanks a lot for your help, I really appreciate it (receiving a PhD is
> |easier with the help of a community ;-) ). Greetings,
> |
> |Jorgito
> |
>
> >
>

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