>     Josh> or attribute requests to an attribute
>     Josh> authority that is not the Identity Provider.
> 
> I'm nervous about this for the trust model issues I brought up.
> I could see using the same attribute in the cases where the trust model
> is going to be the same.
> However I definitely think we want a different attribute if we want
> different processing semantics in the RP.

I don't follow this. Why can't we put these semantics to the SAML layer?

> One particularly thorny issue will be what the IDP should do with a
> request for an attribute from a different provider that it could
> satisfy
> but not under the trust model the RP was hoping for.

I agree its thorny, but is this actually a use-case that we care about? I would 
prefer to punt it to the business layer.
 
Josh.

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