[45330] in Cypherpunks
Re: e-Cash: CAFE vs. Mondex
daemon@ATHENA.MIT.EDU (Matthias Schunter)
Wed Dec 13 12:57:08 1995
Date: Wed, 13 Dec 1995 16:23:15 +0100
To: Adam Shostack <adam@homeport.org>
From: Matthias Schunter <schunter@informatik.uni-hildesheim.de>
Cc: cypherpunks@toad.com (Cypherpunks Mailing List)
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
