Method and system for storing tickets on smart cards
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 19, 2000
Grant Date -
N/A
app pub date -
Aug 8, 1997
filing date -
Aug 9, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a smart card (1) electronic tickets (20) are securely stored. Ticket data is written into the fields (21, 22, 23) of a ticket (20) in a protected manner using a special code. Tickets (20) may comprise several fields, such as an entitlement field (21), a validation field (22), and a verification field (23). Different keys (K1, K2, K3) are used for each type of field at issuing, validation, and verification terminals (81, 82, 83). A further protection of the integrity of the tickets (20) is obtained by using a first storage command (UPDATE) to prepare a field when issuing the ticket (20) at the issuing terminal (81), and, a different, second storage command (WRITE) when validating the ticket (20) at the validation terminal (82). Thus, the fraudulent modification of an issued ticket (20) is prevented.
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