The refresh token represents what the resource owner authorized. The access 
token can be a subset of that. The current draft already supports asking for 
less scope than was granted. It doesn't support asking for a new refresh token 
with less scope.

EHL

From: Breno [mailto:[email protected]]
Sent: Wednesday, June 16, 2010 8:17 AM
To: Eran Hammer-Lahav
Cc: Torsten Lodderstedt; OAuth WG ([email protected])
Subject: Re: [OAUTH-WG] proposal: multiple access tokens from a single 
authorization flow


Alternative proposal. Create a new call for 'dropping privileges' where a 
client can present a single refresh token and scopes and obtain a new refresh 
token/access token with defined scopes provided that these scopes were already 
granted to the original token.

The advantage of a separate call is that it has less impact in implementations 
because it does not modify existing flows. It is also more flexible. For 
instance it would allow a client too split its privileges into tokens with 
overlapping scopes for arbitrary requirements around security and functionality 
of delegating its privileges.
On Jun 11, 2010 1:12 PM, "Eran Hammer-Lahav" 
<[email protected]<mailto:[email protected]>> wrote:

I'll let you know when I see the I-D :-)

EHL

> -----Original Message-----
> From: Torsten Lodderstedt 
> [mailto:[email protected]<mailto:[email protected]>]
> Sent: F...
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