| 摘要 |
PURPOSE:To make trouble given to a user raveled out at verification of a password number or at data restoration with respect to a card type storage medium such as an IC card and an issuing device issuing the card type storage medium. CONSTITUTION:An exclusive file 24 storing the identification number as to each data file 22 stored in a directory area 23 of a storage section 2 is stored in a file area 21 of the storage section 2 corresponding to a file name of each of the data files 22, and control information 232 including a master password number as to the exclusive file 24 is stored in a directory area 23 of the storage section 2. Furthermore, a recovery information section storing recovery information acquired for every updating to the data file 22 by a control section is added to the data file 22 by the control section. |
