In Vancouver the question was asked about the future of the MAC spec due to it 
no linger having a editor.

The Chair and AD indicated a desire to have a document on the use-cases we are 
trying to address before deciding on progressing MAC or starting a new document.

Phil Hunt is going to put together a summery of the Vancouver discussion and we 
are going to work on the use-case/problem description document ASAP.

People are welcome to contribute to the use-case document.

Part of the problem with MAC has been that people could never agree on what it 
was protecting against.  

I think there is general agreement that one or more proof mechanisms are 
required for access tokens.
Security for the token endpoint also cannot be ignored. 


John B.
 
On 2012-08-09, at 1:53 PM, William Mills wrote:

> MAC fixes the signing problems encountered in OAuth 1.0a, yes there are 
> libraries out there for OAuth 1.0a.  MAC fits in to the OAuth 2 auth model 
> and will provide for a single codepath for sites that want to use both Bearer 
> and MAC.
> 
> From: Dick Hardt <dick.ha...@gmail.com>
> To: William Mills <wmills_92...@yahoo.com> 
> Cc: "oauth@ietf.org" <oauth@ietf.org> 
> Sent: Thursday, August 9, 2012 10:27 AM
> Subject: Re: [OAUTH-WG] mistake in draft-ietf-oauth-v2-http-mac-01
> 
> 
> On Aug 9, 2012, at 9:52 AM, William Mills wrote:
> 
>> I find the idea of starting from scratch frustrating.  MAC solves a set of 
>> specific problems and has a well defined use case.  It's symmetric key based 
>> which doesn't work for some folks, and the question is do we try to develop 
>> something that supports both PK and SK, or finish the SK use case and then 
>> work on a PK based draft.
>> 
>> I think it's better to leave them separate and finish out MAC which is *VERY 
>> CLOSE* to being done.
> 
> Who is interested in MAC? People can use OAuth 1.0 if they prefer that model. 
> 
> For my projects, I prefer the flexibility of a signed or encrypted JWT if I 
> need holder of key.
> 
> Just my $.02
> 
> -- Dick  
> 
> 
> 
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