FILE MANAGEMENT DEVICE

PROBLEM TO BE SOLVED: To provide a file management device that prevents a division file from being identified by a third party. SOLUTION: The file management device divides a specific file to generate a plurality of division files and manages them. A plurality of files different from the specific file are stored in a recording medium. The file management device acquires file size of each of the plurality of files when the division to the specific file is requested, specifies a section wherein a largest number of pieces of file size are distributed in each acquired file size, determines a size range of the division file based on the specified section, divides the specific file such that the division file has the size belonging to the determined size range to generate the plurality of division files, and records them into the recording medium. COPYRIGHT: (C)2011,JPO&INPIT