Smart card transaction method and system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 24, 1998
Grant Date -
N/A
app pub date -
Jul 30, 1996
filing date -
Feb 9, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of transaction replenishes a microprocessor-based card. The card computes a certificate of authenticity on the basis of data elements that it contains and that include the contents of its counter of the number of replenishment operations and its identification number. These data elements enable the card to verify its entitlement to be replenished. The card increments its counter of the number of replenishments. A replenishment terminal reads the identification number of the card and transmits to the card the data elements that pertain to it and that comprise the certificate of authenticity corresponding to it for the cycle in progress. The received certificate is compared with a certificate computed by the card. When the certificates are equal, the card accepts a replenishment of units.
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