| 摘要 |
<p>Security protection is accomplished in an IC card by achieving security protection of data at an item level, allowing a high speed access, and preventing illegal use. The IC card includes means (12) for managing service-wise an access level value allotted to each data item, means (13) for retrieving a data item designated by access level value information from outside by looking up a management access level value designated by service kind information from outside, and means (11) for gaining access collectively to the data item values retrieved. The IC card further includes means (23) for initiating time count processing from an initial value whenever a normal access processing is completed, means (24) for judging whether or not data is greater than a time limit value of time count graphic definition, and means (25) for reporting an error occurrence to outside when a time-over state of the time count value is judged. <IMAGE></p> |
