Re: [OAUTH-WG] Audience parameter in authorization flow

[Anthony Nadalin <[e-mail]>]

I think binding audience at registration time is to limiting as we see audience being on a per token request level and also see the audience being part of the restrictions for "act as" or "on behalf of" support 

-----Original Message-----
From: [e-mail] [mailto:[e-mail]] On Behalf Of Hannes Tschofenig
Sent: Wednesday, August 21, 2013 9:41 AM
To: Phil Hunt
Cc: <[e-mail]>
Subject: Re: [OAUTH-WG] Audience parameter in authorization flow

That's certainly true although the referenced document did not talk about the registration phase but rather about the time when the client talks to the authorization server to obtain an access token.

Maybe UMA has provided a story for this already...

On 08/21/2013 06:35 PM, Phil Hunt wrote:
> This could be bound up in the client registration process since oauth clients don't authorize for random "targets".
>
> Phil
>
> @independentid
> www.independentid.com
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> On 2013-08-21, at 9:30 AM, "Tschofenig, Hannes (NSN - FI/Espoo)" <[e-mail]> wrote:
>
>> Hi Sergey,
>>
>> The idea of the audience was to provide a way for the client to indicate the resource server it wants to talk to explicitly rather than overloading the scope field. We certainly need that capability for the MAC token work.
>>
>> The audience information is provided when the client interacts with the AS.
>>
>> Ciao
>> Hannes
>>
>>
>>> -----Original Message-----
>>> From: [e-mail] [mailto:[e-mail]] On 
>>> Behalf Of ext Sergey Beryozkin
>>> Sent: Sunday, August 18, 2013 6:32 PM
>>> To: <[e-mail]>
>>> Subject: [OAUTH-WG] Audience parameter in authorization flow
>>>
>>> Hi Hannes, All,
>>>
>>> Regarding [1], where would you expect an audience parameter be 
>>> provided during the authorization flow ?
>>>
>>> It appears to me it should be provided during the initial redirect 
>>> (similarly to a parameter like redirect_uri).
>>>
>>> Also, would it make sense to support pre-registered audience values, 
>>> example, a client registers and specifies an audience during the 
>>> registration ?
>>>
>>> Thanks, Sergey
>>>
>>> [1] http://tools.ietf.org/html/draft-tschofenig-oauth-audience-00
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