At 9:46 Uhr 13.12.1995, Adam Shostack wrote:

Matthias Schunter wrote:

| The CAFE system is a cheque based system. This means that the | customer receives an electronic chequebook, where each cheque is | (blindly) signed by the bank. | During each payment the customer has to use one of these signed cheques.

| privacy-protecting | The privacy of the user is protected.

How do checks protect the privacy of the user? The bank knows who is spending how much with whom for each check.

No. The cheques are certified blindly. I.e., the bank does not see them during signing/withdrawal and therefore doe not re-recognize them. However, the bank does know how much money each participant receives or spends, but not who's paying whom. m % Matthias <Schunter@acm.org> Uni Hildesheim +49(5121)883-788 fax-732