JP2009301467A - Data updating method for authentication device used in numerical controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an data updating method for an authentication device used in a numerical controller, for enhancing a forgery preventive ability, using both an electronic data and a physical data, as to vulnerability by only the electronic data. <P>SOLUTION: A regenerating device 4 prepares information of a key device 2 read from the key device 2, as a life updating request data Req. The regenerating device 4 transmits the life updating request data Req to a key device life management server 6 managed by a key device life management authority person, using the Internet 5. The key device life management server 6 decodes the life updating request data Req received through the Internet 5, prepares a life updating data Ans when an updating request reasonable, and transmits the life updating data Ans to the regenerating device 4, using the Internet 5. The regenerating device 4 decodes the received life updating data Ans, and updates a life data of the key device 2, based on the decoded life updating data Ans, when the life updating data is reasonable. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a device for authenticating a numerical control device, and in particular, an authentication device for performing authentication to enable input of specific data to the numerical control device and output of specific data from the numerical control device. It is related with the data update method.

  In order to manage the expiration date of the machine tool, a third party changes the expiration date by encrypting the expiration date using an encryption code that can be arbitrarily selected by a machine tool distributor, a leaser, etc. A technique for preventing this is known (see Patent Document 1).

  In the technique disclosed in Patent Document 1, an encryption key arbitrarily determined by a machine tool manufacturer is input to a numerical control device in advance. When the encrypted release code is input, the numerical control device decrypts the release code with the encryption key and restores the expiration date data. The use permission is determined by comparing the restored expiration date with the current date and time.

JP 2006-268296 A

  The publicly known technology described in the background art uses a numerical control device as an object, and cancels the operation restriction of the expiration date of use of the numerical control device with only electronic data called a release code that is special data. Both the program and the encryption key / release code use only electronic data. These technologies do not use special hardware. However, in this method, if the cipher is decrypted, it is easy to copy, and there is a problem of vulnerability that the cipher can be forged.

  Therefore, in order to reinforce the above-mentioned vulnerability, when a physical key device called an authentication device that stores special electronic data for releasing the operation restriction of the numerical control device is used, and the key is released by this authentication device Only the operation of the numerical control device is released so as to permit the output of the specific data in the numerical control device to the external device or to permit the input from the external device to the numerical control device.

  That is, the present inventors have considered providing a specific data update system used in a numerical control device that can improve the forgery prevention capability by using both electronic data and a physical key for vulnerability of only electronic data. However, even in the above system, if the authentication device is accidentally lost, it may be illegally used by a third party such as an unauthorized user.

  Therefore, the present invention prevents the authentication device from being used as an authentication device when the authentication device has a long life and the authentication device has passed to a third party such as an unauthorized user. It is an object of the present invention to provide a data update method for an authentication device that permits extension of a time limit.

  The invention according to claim 1 of the present application uses the authentication device in which lifetime data including either one or both of the expiration date and / or the number of times of use and ID data for identifying the authentication device itself are set. In the data update method of the authentication device of the numerical control system that allows specific data stored in the control device to be input / output to / from an external device, the authentication is performed using a playback device that can read and write data in the authentication device. Reading the lifetime data and the ID data from a device, creating a lifetime update request data based on the data, and a lifetime data management server for managing the lifetime of the authentication device connected to the Internet, through the Internet Transmitting the lifetime update request data; and the lifetime data management server transmitting the lifetime update request data. It is checked whether the life update request data is valid. If the transmitted data is valid, the lifetime update data including the updated lifetime data and the transmitted ID data of the authentication device And a step of returning the lifetime update data to the playback device via the Internet, and whether the lifetime update data returned is valid in the playback device. And checking if the returned lifetime update data is valid, and rewriting the lifetime data of the authentication device using the playback device based on the lifetime update data. It is the data update method of an authentication device.

  According to a second aspect of the present invention, the playback device directly transmits / receives the lifetime data management server via the Internet, or transfers the lifetime update data from the playback device to the transmission / reception device, and the transmission / reception device transmits the lifetime data via the Internet. The data update method for an authentication apparatus according to claim 1, wherein the data is transmitted to and received from a management server.

  According to the present invention, it is possible to provide an authentication device used in a numerical control device with further improved forgery prevention capability.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing the relationship of a numerical control device 1 that performs authentication using the key device 2 according to the present invention and enables input / output of specific data. The numerical controller 1 is allowed to input / output specific data with the external device 3 by the key device 2. That is, without the key device 2, the numerical control device 1 cannot input / output specific data to / from the external device 3. The key device 2 is configured using a rewritable nonvolatile memory such as a USB memory, a smart media, or a compact flash (registered trademark).

  FIG. 2 is a diagram showing a relationship with the key device life data management server 6 when the life of the key device 2 in the present invention is updated. The playback device 4 is a device that can read and write information of the key device 2. The playback device 4 creates the key device information read from the key device 2 as the lifetime update request data Req. Then, the playback device 4 transmits the created lifetime update request data Req to the key device lifetime data management server 6 using the Internet 5.

  The key device life data management server 6 is a server managed by a key device management authority. The key device life data management server 6 receives the life update request data Req sent from the playback device 4 through the Internet 5, decodes the received life update request data Req, creates life update data Ans, The lifetime update data Ans created using 5 is transmitted to the playback device 4. The lifetime update data Ans is created when there is no problem in the decrypted lifetime update request data Req.

  The playback device 4 receives the lifetime update data Ans sent from the key device lifetime data management server 6 via the Internet 5, decodes the received lifetime update data Ans, and based on the decoded lifetime update data Ans. The lifetime data of the key device 2 is updated. The lifetime update data is updated when there is no problem in the received lifetime update data Ans.

  FIG. 3 is a schematic block diagram of the numerical controller 1 including the external device interface 16 and the key device interface 17. The numerical controller 1 includes a FROM 11, SRAM 12, a display device 13, an input device 14 such as a keyboard connected to the CPU 10 via a bus 18, and a servo controller 15 that drives and controls the servo motor 19 via an amplifier (not shown); An external device interface 16 for connecting the external device 3 (not shown) and a key device interface 17 for connecting the key device 2 (not shown) are provided. The display device 13 displays the progress of processing and the like, and an LCD (liquid crystal display device) or the like is used. The CPU 10 is a processor that controls the entire numerical controller 1. The FROM 11 is a flash memory (flash ROM). The SRAM 12 is a kind of RAM that can write and read data. The SRAM 12 is backed up by a battery (not shown), and temporarily calculated data and various data input by the operator via the input device 14 are stored in the data area.

  The CPU 10 reads a system program stored in the FROM 11 and controls the entire numerical controller 1 according to this system program. The system program stored in the FROM 11 includes various types of programs for executing an edit mode process necessary for creating and editing a machining program and a reproduction mode process for automatic operation. The external device interface 16 and the key device interface 17 may be provided with a special interface, or an input / output interface normally provided in a numerical control device may be used. The numerical control device 1 confirms whether the life of the key device 2 remains, and permits the output of the specific data stored in the numerical control device 1 to the external device 3. Alternatively, input from the external device 3 to the numerical control device 1 is permitted.

It is a figure which shows the relationship of the numerical control apparatus which authenticated by using the key apparatus in this invention, and enabled input / output of the specific data. It is a figure which shows the relationship with the key apparatus manager server at the time of updating the lifetime of the key apparatus in this invention. It is a schematic block diagram of a numerical controller.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Numerical control apparatus 2 Key apparatus 3 External apparatus 4 Playback apparatus 5 Internet 6 Key apparatus lifetime data management server 10 CPU
11 FROM
12 SRAM
13 Display Device 14 Input Device 15 Servo Control Unit 16 External Device Interface 17 Key Device Interface 18 Bus 19 Servo Motor Req Lifetime Update Request Data Ans Lifetime Update Data

Claims (2)

Specific data stored in the numerical controller using the authentication device in which ID data for identifying the lifetime data including the expiration date and / or the number of times of use and the authentication device itself is set externally In the data updating method of the authentication device of the numerical control system that enables input / output with the device,
Using the playback device that can read and write data in the authentication device, reading the lifetime data and the ID data from the authentication device, and creating lifetime update request data based on the data;
Transmitting the lifetime update request data over the Internet to a lifetime data management server that manages the lifetime of the authentication device connected to the Internet;
The lifetime data management server checks whether the transmitted lifetime update request data is valid. If the transmitted data is valid, it is transmitted as updated lifetime data. Creating lifetime update data including ID data of the authentication device
Returning the lifetime update data to the playback device via the Internet;
In the playback device, the returned lifetime update data is checked to determine whether the returned lifetime update data is valid, and when the returned lifetime update data is valid Rewriting the lifetime data of the authentication device using the playback device based on the lifetime update data;
A data update method for an authentication device having   The playback device directly transmits / receives to / from the lifetime data management server via the Internet, or transfers the lifetime update data from the playback device to the transmission / reception device, and the transmission / reception device transmits / receives to / from the lifetime data management server via the Internet. The data updating method of the authentication device according to claim 1.

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