because the RP would still have a whitelist .....

I see Allen's example as a specific case of 'for a given trusted OP, I 
am more willing to trust attribute X than Y'. In his case its because 
the asserted email address matched the OP's domain ....

But the RP still has to start with 'trusting' the OP, through a 
whitelist or something more flexible.

paul

Andrew Arnott wrote:
> Allen,
>
> It sounds like you're proposing that an RP trust the email claim from 
> an OP if the domain of the OP and the domain of the email match.  Is 
> that right?  If so, what's to stop me from setting my myrogueOP.com, 
> and asserting an email claim for [email protected] and 
> getting into web sites without a valid email address?
> --
> Andrew Arnott
> "I [may] not agree with what you have to say, but I'll defend to the 
> death your right to say it." - Voltaire
>
>
> On Mon, Apr 6, 2009 at 9:34 PM, Allen Tom <[email protected] 
> <mailto:[email protected]>> wrote:
>
>     Currently, Google OpenID users can be exempted from Email
>     verification when the Google OP returns an @gmail.com
>     <http://gmail.com> address, because the Google OP will only return
>     the @gmail.com <http://gmail.com> address that is tied to the
>     Google Account.
>
>     If we generalize this, if the RP trusts the user's email provider
>     to always assert the user's true email address, then why wouldn't
>     an RP trust the OP to always return a valid disposable email address?
>
>     Allen
>
>
>
>     Andrew Arnott wrote:
>>     True. This is a model I thought of a while back, when some credit
>>     cards started generating one-time-use credit card numbers for use
>>     when shopping online.  I think this has a much higher chance of
>>     working for people, although it doesn't at all solve the problem
>>     of RP's needing to send the user through email verification.
>>     --
>>     Andrew Arnott
>>     "I [may] not agree with what you have to say, but I'll defend to
>>     the death your right to say it." - Voltaire
>>
>>
>>     On Mon, Apr 6, 2009 at 8:42 PM, Allen Tom <[email protected]
>>     <mailto:[email protected]>> wrote:
>>
>>
>>         Andrew Arnott wrote:
>>         >
>>         > Thanks.  Incidentally, the grief I have with Facebook is
>>         that I have
>>         > to visit Facebook in order to pick up my "mail" which may
>>         just be a
>>         > poke or prod.  *grumble*  But yes, I'd like to see us provide a
>>         > general solution.  And my personal queuing SP of choice
>>         would likely
>>         > be one that sends copies of my messages in the email it
>>         sends me, as
>>         > well as organizes them within its own web site for my
>>         review later.
>>         >
>>
>>         What if the OP generated a unique disposable email address
>>         for each RP
>>         that the user wants to allow email, and the OP just forwards
>>         it on to
>>         the user's real mailbox (or cell phone or IM, depending on
>>         the user's
>>         preference). If and when the user no longer wants to receive
>>         messages
>>         from the RP, the user can just deactivate the disposable
>>         email address.
>>
>>         This might be easier to deploy than defining a standard
>>         messaging API
>>         and putting OAuth in front of it.
>>
>>         Allen
>>
>>
>>
>>
>>
>>
>
>
>
>
>
> >

-- 
Paul Madsen            e:paul.madsen @ gmail.com
                       m:613-282-8647
                       web:connectid.blogspot.com 


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