E-PAYMENT ARCHITECTURE PRESERVING PRIVACY

A method for providing online electronic payment from a client (202) for a good or service provided by a service provider (204), includes: receiving by the client a contract from the service provider containing at least a total amount of purchases; requesting a voucher by the client to a client bank (206), by sending at least the total amount and a signature of the client; the client bank generates the voucher, which includes at least the total amount and a certificate of the client bank, and sends it to the client; relaying the voucher by the client and by the service provider to a service provider bank (210); and after authentication of the voucher, the service provider bank transfers a credit validation, and the service provider delivers the good or service to the client.