On 2-Feb-07, at 7:05 AM, George Fletcher wrote:
> but I'm still not sure how this helps with the phishing problem.   
> As you pointed out John, the issue is a rogue RP redirecting to a  
> rogue OP.  So the rogue OP just steals the credentials and returns  
> whatever it wants.

In this case, the rogue RP is not interested at in the the auth  
response from the rogue OP (or for that matter from the legitimate  
OP); just in stealing the  user's credentials.

The phishing field prevents the phisher to later use these  
credentials on a legitimate RP (which will be contacting the  
legitimate OP) to impersonate the user -- if the RP enforces  
"phishable = no".

Johnny



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