[cryptography] Nirvana

James A. Donald jamesd at echeque.com
Thu Sep 22 20:46:51 EDT 2011


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.





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