I’m lost, the terms defined in the oauth token-exchange draft are the same 
terms defined in ws-trust and have the same definitions

From: Brian Campbell [mailto:bcampb...@pingidentity.com]
Sent: Thursday, July 3, 2014 12:02 PM
To: Anthony Nadalin
Cc: Vladimir Dzhuvinov; oauth@ietf.org
Subject: Re: [OAUTH-WG] draft-jones-oauth-token-exchange-00

And I was suggesting that OAuth token exchange align with the WS-Trust 
definitions or maybe even define totally new terms. But not use the same terms 
to mean different things.

On Thu, Jul 3, 2014 at 12:55 PM, Anthony Nadalin 
<tony...@microsoft.com<mailto:tony...@microsoft.com>> wrote:
The explanation of on-behalf-Of and ActAs are correct in the document as 
defined by WS-Trust, this may not be your desire or understanding but that is 
how WS-Trust implementations should work

From: OAuth [mailto:oauth-boun...@ietf.org<mailto:oauth-boun...@ietf.org>] On 
Behalf Of Brian Campbell
Sent: Thursday, July 3, 2014 11:44 AM
To: Vladimir Dzhuvinov
Cc: oauth@ietf.org<mailto:oauth@ietf.org>
Subject: Re: [OAUTH-WG] draft-jones-oauth-token-exchange-00

FWIW, I am very interested in the general concept of a lightweight or OAuth 
based token exchange mechanism. However, despite some distaste for the 
protocol, our existing WS-Trust functionality has proven to be "good enough" 
for most use-cases, which seems to prevent work on token exchange from getting 
any real priority.
I have a few thoughts on 
http://tools.ietf.org/html/draft-jones-oauth-token-exchange-00 which I've been 
meaning to write down but haven't yet, so this seems like as good a time as any.
I would really like to see a simpler request model that doesn't require the 
request to be JWT encoded.
The draft mentions the potential confusion around On-Behalf-Of vs. 
Impersonation Semantics. And it is confusing (to me anyway). In fact, the use 
of Act-As and On-Behalf-Of seem to be reversed from how they are defined in 
WS-Trust<http://docs.oasis-open.org/ws-sx/ws-trust/v1.4/ws-trust.html> (this MS 
FAQ<http://msdn.microsoft.com/en-us/library/ee748487.aspx> has less confusing 
wording). They should probably be aligned with that prior work to avoid further 
confusion. Or maybe making a clean break and introducing new terms would be 
better.
I don't think the security_token_request grant type value is strictly legal per 
RFC 6749. The ABNF at http://tools.ietf.org/html/rfc6749#appendix-A.10 would 
allow it but according to http://tools.ietf.org/html/rfc6749#section-4.5 
extension grants need an absolute URI as the grant type value (there's no grant 
type registry so the URI is the only means of preventing collision).





On Fri, Jun 27, 2014 at 6:07 AM, Vladimir Dzhuvinov 
<vladi...@connect2id.com<mailto:vladi...@connect2id.com>> wrote:
Has anyone implemented the OAuth 2.0 Token exchange draft, in particular
the on-behalf-of semantics? We've got a use case for that and I'm
curious if someone has used it in practice.

http://tools.ietf.org/html/draft-jones-oauth-token-exchange-00

Thanks,

Vladimir
--
Vladimir Dzhuvinov <vladi...@connect2id.com<mailto:vladi...@connect2id.com>>
Connect2id Ltd.

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