DATA APPLICATION STORAGE METHOD, METHOD/SYSTEM FOR EXECUTING COMMAND, DATA APPLICATION STORAGE PROGRAM, STORAGE MEDIUM WITH THE PROGRAM STORED THEREON, COMMAND-PERFORMING PROGRAM AND STORAGE MEDIUM WITH THE PROGRAM STORED THEREON

摘要

PROBLEM TO BE SOLVED: To provide a storage medium in which data and an AP can safely be stored via the Internet, etc., even after issuing an IC card and which can allow a system to perform a command. SOLUTION: Mutual authentication is performed between a user device and a data storing device. By using the ID information or key information of the data storing device obtained by the authentication, the user device confirms that its authentication opposite party is a correct data storing device and the data-storing device confirms that its authentication opposite party is a correct user device. By cipher communication, the data storing device transmits the data and the AP to the user device, stores and sets the data and the AP.