Re: [OAUTH-WG] Question lengths in draft-sakimura-oauth-tcse-03

2014-05-20 Thread Brian Campbell
I'd say it should be a MUST so that implementations are consistent about it. On Fri, May 16, 2014 at 3:27 PM, Bill Mills wmills_92...@yahoo.com wrote: The HTTP specs don't limit these things, but implementations do, and the problems when you run into them are a rea pain. DO we want to make

Re: [OAUTH-WG] Client authentication and assertion grants

2014-05-20 Thread Brian Campbell
Yes Sergey, it's to allow for support of unregistered clients. Typically such clients will have some relationship established with a security token service (STS) where they can obtain assertion grants and the AS trusts the STS to issue such assertions. In that kind of scenario, the identity of the

Re: [OAUTH-WG] Client authentication and assertion grants

2014-05-20 Thread Sergey Beryozkin
Hi, Thanks for the clarification, On 20/05/14 14:03, Brian Campbell wrote: Yes Sergey, it's to allow for support of unregistered clients. Typically such clients will have some relationship established with a security token service (STS) where they can obtain assertion grants and the AS trusts

Re: [OAUTH-WG] Client authentication and assertion grants

2014-05-20 Thread Bill Burke
On 5/20/2014 10:04 AM, Sergey Beryozkin wrote: Hi, Thanks for the clarification, On 20/05/14 14:03, Brian Campbell wrote: Yes Sergey, it's to allow for support of unregistered clients. Typically such clients will have some relationship established with a security token service (STS) where

Re: [OAUTH-WG] Client authentication and assertion grants

2014-05-20 Thread Prateek Mishra
Sergey - you haven't missed anything. The client remains unregistered throughout the exchange. There is no relationship between the assertion grant (or access token) and the client either. You are pointing out that an AS endpoint supporting unregistered clients (public in OAuth terminology)

Re: [OAUTH-WG] Client authentication and assertion grants

2014-05-20 Thread Sergey Beryozkin
Hi Prateek On 20/05/14 16:00, Prateek Mishra wrote: Sergey - you haven't missed anything. The client remains unregistered throughout the exchange. There is no relationship between the assertion grant (or access token) and the client either. You are pointing out that an AS endpoint supporting

Re: [OAUTH-WG] Client authentication and assertion grants

2014-05-20 Thread Prateek Mishra
The difference between the two scenarios is that the authorization code has a one-use property and also requires the user to be present. These conditions are not available in the (assertion grant -- access token) with a public client. So there are some fundamental differences in security