[cryptography] Nirvana

Ben Laurie ben at links.org
Fri Sep 23 05:06:43 EDT 2011


On Fri, Sep 23, 2011 at 1:46 AM, James A. Donald <jamesd at echeque.com> wrote:
> On 2011-09-23 8:33 AM, Nico Williams wrote:
>>
>> In your view then, is the alternative at all a public key based
>> crypto system? If yes, is it SSH (or SSH-like) "trust on first
>> contact" or something else?
>
> In order to shop, one needs a third party mediating transactions
>
> *THEY* should issue certificates.  The Visa certificate should signify "This
> merchant is trusted by Visa to accept Visa."
>
> And further, you should have a client app on your computer for dealing with
> shared secrets, which is only capable of attempting a visa payment with an
> entity trusted by Visa.

Wasn't that what SET did?



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