Re: [OAUTH-WG] Signatures, Why?

2010-03-12 Thread Eve Maler
Here is some late input to this thread. The UMA group had a F2F meeting on Wednesday, for which draft minutes are written up here: http://kantarainitiative.org/confluence/display/uma/UMA+telecon+2010-03-10 I had taken an action from the last OAuth telecon to collect UMA use cases that related

Re: [OAUTH-WG] Signatures, Why?

2010-03-12 Thread Brian Eaton
On Fri, Mar 12, 2010 at 10:22 AM, Eve Maler e...@xmlgrrl.com wrote: It was observed that the argument in the OAuth community about token size seems to be related to token signing, thusly: those who are willing to require the Authorization Server to be stateless need large meaningful tokens and

Re: [OAUTH-WG] Signatures, Why?

2010-03-12 Thread Igor Faynberg
Yes, the third-party-based non-repudiation with symmetric cryptography is a complex thing. The way I would apply it to the Client request is as follows: 1) The Client sends the token request, R, to the Third Party (and, you are right, the Third Party must know who the client is, and so

Re: [OAUTH-WG] Signatures, Why?

2010-03-12 Thread Eve Maler
Agreed that token signing is separate from message signing as a proposition. I just happened to stick all of our signing conversations into one bucket of notes... Sorry that was confusing. Eve On 12 Mar 2010, at 11:06 AM, Brian Eaton wrote: On Fri, Mar 12, 2010 at 10:22 AM, Eve