| 摘要 |
<p>A secure file holding system is provided that can, for confidential data transferred from a PC to a mobile phone, prevent flow-out of the data due to wrong operation of the mobile phone by an authorized user of the mobile phone and malicious take-out of the data by the authorized user and an unauthorized user. The file holding system according to the present invention has: a function of reserving part of an execution memory as a volatile memory or part of a non-volatile memory as a non-volatile file and coupling the part to said non-volatile memory so as to be accessed as a folder in which a user saves data at the OS startup in the mobile phone; a function of redirecting access to said folder to said volatile memory or said file during the OS startup; a function of capturing an input/output request from said non-volatile memory and constraining access to said folder by a process other than a file management process in the mobile phone; and a function of deleting said volatile memory or said file at the OS termination.</p> |
