Using individual claims for the different confirmation types would convey
the same information with a reduced message size, likely simpler
implementation, and avoid the need to establish a new registry.

Seems like a no-brainer to me but maybe I'm overlooking something?

There hasn't been much discussion that I'm aware of. Nat seemed in favor of
it (the +1 below). Mike was dismissive of it at the Dallas meeting but
didn't provide any reasoning (that I understood anyway).


On Mon, Mar 23, 2015 at 10:18 AM, Nat Sakimura <[email protected]> wrote:

> +1
>
> =nat via iPhone
>
> 2015/03/23 11:07、Brian Campbell <[email protected]> のメッセージ:
>
> This is mostly about section 3.4
> <https://tools.ietf.org/html/draft-ietf-oauth-proof-of-possession-02#section-3.4>
> but also the whole draft.
>
> If "cnf" is intended to analogous to the SAML 2.0 SubjectConfirmation
> element, it should probably contain an array value rather than an object
> value. SAML allows not just for multiple methods of confirming but for
> multiple instances of the same method. IIRC, only one confirmation needs to
> be confirmable.
>
> I'm not sure the extra complexity is worth it though. I've rarely, if
> ever, seen SAML assertions that make use of it.
>
> If the intent is just to allow for different kinds of confirmation,
> couldn't the structure be pared down and simplified and just have
> individual claims for the different confirmation types? Like "cjwk" and
> "ckid" or similar that have the jwk or kid value respectively as the member
> value.
>
>
>
>
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