System for permitting access to data field area in IC card for multiple services
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United States of America Patent
Stats
-
Aug 1, 1989
Grant Date -
N/A
app pub date -
Sep 16, 1987
filing date -
Sep 16, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for permitting access to a data field area in an IC card for multiple services using an individual card holder identification number for each of a plurality of data fields or for each group of data fields. Data field identification information, a personal identification number, access qualification information, and an authentication code are supplied to the IC card before an execution of an access to the data field. An authentication is made between the personal identification number and the authentication code stored in the IC card for the selected data field, and the personal identification number and the authentication code supplied to the IC card. Based on the result of the authentication, an access to the data field area to which access is requested is permitted within the limit of the access right stored in the IC card corresponding to the access qualification information supplied to the IC card.
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