JPS62242250A - Terminal file accessing system - Google Patents

Abstract

PURPOSE:To prevent the destruction of evidence data by an illegal person by transmitting the evidence data to a center in which the content of file access obtained in a terminal is recorded automatically. CONSTITUTION:When input command data 50 are sent from an input section 17, a file access control section 14 retrieves a password table 12 and judges for the presence of conformable password. When the password is present, a full name is found out from the password table 12, and data and time are obtained from a clock mechanism 11 and evidence data 51 are prepared by composing with the input command data 50 and sent to a file mechanism 15 and written in an evidence file 19. A center transmission section 13 is started at every fixed time by the clock mechanism 11, reads the evidence film 19 and transmits them to the center.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a terminal file access method, and particularly relates to a terminal file access method.

This invention relates to a terminal file access method suitable for detecting unauthorized access.

[Conventional technology]

Regarding the conventional file access method, see Japanese Patent Application Laid-Open No. 59-1
As is known from No. 51253, a method is known in which a trail is obtained when a file is accessed. This method is now being widely applied to terminal devices.

[Problem that the invention seeks to solve]

The above conventional technology does not take into account the problem that if a file access trail is acquired by the terminal itself when applied to a terminal device, an unauthorized person can destroy the terminal or delete the trail file. The purpose is to detect unauthorized access to files on devices.

[Means for solving problems]

The above problem can be solved by automatically transmitting trail data recorded on the file access details obtained at the terminal to the center.

[Effect]

It cannot be destroyed.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the terminal device 10 consists of a clock mechanism 11, a password table 12, a center transmission section 13, a file access control section 14, a file mechanism 15, an output section 16, and an input section 17, and can be accessed by the terminal device &10 itself. It has a data file 18 and a trail file 19. It is also connected to the center 30 via a line. The password table 12 consists of passwords and corresponding names, as shown in FIG.

Next, the operation of the terminal device 10 will be explained. Input section 17
When an input is made, input command data 50 is sent to the file access control section 14. .

The input command data 50 consists of a command, file name, length, password, and data as shown in FIG.
FIG. 5 shows the operational flow of the file access control unit 14, assuming that 2 has the meaning of file write.

When the input command data 50 is sent, the file access control unit 14 indexes the password table 12. (1
01) Determine whether there is a matching password. (10
2) This can prevent file access by unauthorized persons. If there is no error processing, the process ends (109). If a password exists, password table 12
I would like more names. (103) Then, the date and time are obtained from the clock mechanism 11 (104) and stored with the input command data 50 to create trail data 51 shown in FIG. (10
5) This allows you to obtain the name 2 of the person accessing the file, as well as the date, time, name of the file accessed, etc. The created trail data 51 is sent to the file mechanism 15 and written to the trail file 19. (106) Then, access the data file 18 according to the command of the input command data 50 (107), and output the result to the output unit 16 (107).
08) End the process.

FIG. 6 shows the operation flow of the center transmitter 13. Here, it is assumed that the center transmitter 13 is woken up at regular intervals by a clock $11. Center transmitter 1
3 reads the trail file 19 when activated. (2
υ1) Then send the read file to the center2
02) Clear the trail file 19. (203) Since the trail data is thereby sent to the center, it is possible to prevent the trail data from being destroyed by an unauthorized person.

[Invention effect]

According to the present invention, when an unauthorized person accesses the file, the file access trail is obtained and transmitted to the center, so that it is impossible for the unauthorized person to erase the trail data, and security can be maintained.

[Brief explanation of drawings]

Figure 1 is a block diagram of an embodiment of the present invention, Figure 2 is input command data, Figure 3 is a password table display, Figure 4 is a trail data display, and Figure 5 is a file access control section. Operation Flowchart FIG. 6 is an operation flowchart of the center transmitter. 10...Terminal device fit, 11...Clock mechanism 12...Password table 13...Center transmission unit 14...File access control unit 15...File mechanism 16...Output unit 17.
...Input section 18...Data file 19
...Trail file 3o...Center 51...
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Claims (1)

[Claims] 1. In a terminal device that has a database on the terminal and can access it by itself, create a trail file to record file access contents, provide a means to log the file access contents to the file, and automatically send the file access to the center. A terminal file access method characterized by providing a means for transmitting a trail file.