Method for conducting a transaction between a chip card and an information system
US5796831A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1995 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | May 31, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/082
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A method of conducting a transaction between a chip card and an information system protects against fraud and malfunction during the transaction. The method involves a multi-step recording procedure wherein the transaction is first temporarily recorded in the chip card and the information system, and then later is definitively recorded after it has been verified that both sides have performed the temporarily recording step. In order to perform the temporary recording, information which describes the transaction is sent to both the chip card and the information system from a transaction management device. In order to verify that both sides have performed the temporary recording, a first set of messages is sent from the chip card and the information system to the transaction management device which indicate that the temporary recording has been performed. The transaction management device receives these messages and responds by sending a second set of messages to the chip card and the information system. The chip card and the information system receive these messages and respond by changing the character of the previously performed recording from temporary to definitive. The transact…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.