Re: [OAUTH-WG] conf call follow up from today

William Mills <wmills_92105@yahoo.com> Mon, 04 February 2013 21:33 UTC

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Date: Mon, 4 Feb 2013 13:33:27 -0800 (PST)
From: William Mills <wmills_92105@yahoo.com>
To: Prateek Mishra <prateek.mishra@oracle.com>, "oauth@ietf.org" <oauth@ietf.org>
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Subject: Re: [OAUTH-WG] conf call follow up from today
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OAuth 1.0a solves ordering problems there but not additional data being added to the specific headers.  It specifically requires the library to break apart, sort, and reassemble in a alphabetical order by name the query string parameters and oauth_* parameters.  One of the less popular things about it. 


________________________________
 From: Prateek Mishra <prateek.mishra@oracle.com>
To: oauth@ietf.org; William Mills <wmills_92105@yahoo.com> 
Sent: Monday, February 4, 2013 1:28 PM
Subject: Re: [OAUTH-WG] conf call follow up from  today
 

Bill - 

How does OAuth 1.0a deal with the problem of HTTP URL and header
    mutability? Header order may get re-arranged and URLs modified in
    transit from client to server. As a result, the signature/HMAC
might not validate at the final destination.

Isn't that a foundational problem with the OAuth 1.0a model? I
    thought that was one of the concerns expressed at the meeting today.

- prateek



1)  I think that we need to focus on specific solutions, as I said on the call, and solve the OAuth 1.0a/MAC use case.  There's significant installed base of OAuth 1.0a and we need a path for those installations into OAuth 2.0.  I may well pursue MAC in the interim to do this, but a full HOK solution woul work too.
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>2)  I think the discussion we were having about "which authenticator to use" falls squarely into the endpoint discovery discussion and we should put that energy into endpoint discovery as distinct from HOK.
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>3)  We haven't talked yet about how a client will be able to specify a token type if it wants a specific one.  OAuth 2 core will need to be extended to support this.
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>4)  We should leave the key distribution/discovery mechanism either out of scope or define it explicitly per HOK token type profile.  This will have to work with the extensions for #3 above.
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>5)  I want to avoid the problem in OAuth 1.0a of having to support and accept every possible signing mode.  Being force to accept PLAINTEXT sucks.  We need a way for the discovery endpoint to mandate a specific set of allowed signature methods.
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>Regards,
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>-bill
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