| 摘要 |
<p>[PROBLEMS] To provide a data use managing system which forces a face-to-face permission by an administrator of confidential data when using the confidential data stored in a mobile terminal. [MEANS FOR SOLVING PROBLEMS] A user mobile terminal (2) transmits a use request token for requesting a use of encrypted confidential data to an administrator mobile terminal (1) by near-distance radio communication. If the administrator of the confidential data as the user of the administrator mobile terminal (1) performs a permission operation of use of the confidential data by the use mobile terminal (2) to the administrator mobile terminal (1), the administrator mobile terminal (1) transmits a permission token indicating the permission to use the confidential data to a right managing server (3). The right managing server (3) transmits a decryption key to the user mobile terminal (2). The user mobile terminal (2) decrypts the encrypted confidential data by the received decryption key and uses the confidential data by a predetermined use method.</p> |
