A system for open electronic commerce having a customer trusted agent securely communicating with a first money module, and a merchant trusted agent securely communicating with a second money module. Both trusted agents are capable of establishing a first cryptographically secure session, and both money...http://www.google.fr/patents/US5642419?utm_source=gb-gplus-shareBrevet US5642419 - Method for acquiring and revalidating an electronic credential
Method for acquiring and revalidating an electronic credential
