JP2003157191A - Method of preventing tampring of file in computer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a file in a computer from being easily rewritten. SOLUTION: When rewrite of the file in the computer is instructed, the date written in the file is confirmed before the start of conventional rewrite operation, and rewrite is inhibited when this date doesn't coincide with the present date of the computer, and figure '1' is added just after the file name to give a new file name and then rewrite is permitted when the date coincides with the present date of the computer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer program for preventing unauthorized writing of a file once written in a computer file.

[0002]

2. Description of the Related Art With a conventional computer program, the contents, date, and time can be easily rewritten by overwriting the contents of a file once written. In addition, you can freely rewrite from the past to the future by changing the date setting on the computer itself.

[0003]

At present, files relating to computers can be overwritten any number of times, and it is easy to rewrite important documents by overwriting as well, so that the reliability is inferior. By manipulating the date on the computer itself, it is possible to pretend to be a past date file or a future date file as if it were the current day's operation. This is also lacking in reliability. For this reason, public documents such as those from government offices have considerable limitations and restrictions on the submission of computer files, which causes a great deal of waste such as changing to printed matter.

[0004]

Unauthorized tampering with a computer program by adding a necessary program procedure to "file name" and "date of writing target file name" at the time of writing a file in computer operation. Manage the act.

[0005]

EFFECTS OF THE INVENTION Since unauthorized tampering cannot be performed, it is expected that the reliability of data files such as computers will be high, and it will be possible to submit printed documents such as documents to be submitted to public institutions. It is expected that this will greatly contribute to energy saving and resource saving.

[0006]

[Example] When a rewrite command is input, the date written in the file is confirmed. It is compared with the current date of the computer, and if it is a past date, it returns to (001). Also, when the date is in the future, as in the case where the date operation is performed, the process similarly returns to (001). If the date of the file matches the date on the computer, the number "1" will appear immediately after the file name.
Is added to allow writing as a new file name.
Similarly, when the dates match, if a number is attached to the end of the file name, the number obtained by adding "1" to the number is replaced with the attached number. Rewrite with a new file name. Issue rewrite permission.

[Brief description of drawings]

FIG. 1 is a flowchart for achieving a tampering prevention method for files of a computer.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hidenori Takahashi             1-11-15 Kashiwaza, Ageo City, Saitama Prefecture 506 (72) Inventor Daisuke Yamagishi             2-59, Horikiri 2-59, Katsushika-ku, Tokyo 603 (72) Inventor Asako Tanabe             203, 5-40-40 Sakuragaoka, Setagaya-ku, Tokyo (72) Inventor Yosuke Kanamori             2-4-6 Hirai, Edogawa-ku, Tokyo F-term (reference) 5B082 EA09 EA10

Claims (2)

[Claims] 1. A computer program for preventing unauthorized alteration of computer files. 2. A computer program for preventing unauthorized tampering of files by operating the date of the computer itself.