At 12:26 12/8/95 -0600, Mark Twain Ecash Support wrote:

DigiCash agrees that it is desirable to encrypt the payment request. The problem is how? You can't use the payor's public key, since the payor is anonymous to the payee. There are other, high overhead, protocols that might be used, but after taking MIM into account, securing the payment request from within Ecash while retaining acceptable latency is much harder to acomplish than one might think.

Wouldn't a Diffie-Hellman key exchange work here? Or is that too much overhead? ----------------------------------------------------------------- Bill Frantz Periwinkle -- Computer Consulting (408)356-8506 16345 Englewood Ave. frantz@netcom.com Los Gatos, CA 95032, USA