| 摘要 |
PROBLEM TO BE SOLVED: To authenticate object data every time they are used. SOLUTION: An authentication manager 42 examines the operation situation of an authentication program 44 necessary for authentication every time the object data are used. When the needed authentication program 44 is not loaded, whether the program 44 necessary for authentication can be loaded or not is examined and corresponding authentication program 44 is loaded from an external storage device 46 or the outside through a communication I/F 48 when the program 44 can be loaded. When the corresponding authentication program 44 can not be loaded, the manager 42 notifies an IPMP controller 40 of the effect. When the needed authentication program 44 exists, authentication is carried out with the authentication program 44, and the manager 42 informs the controller 40 of the authentication results. |
