JPH0612521B2 - Program execution prohibition method - Google Patents

Description

The present invention relates to a program execution prohibition method, and more particularly to a method for prohibiting execution of a program by hardware of the same model.

[Conventional technology]

Conventionally, programs used in information processing systems, such as personal computers and word processors, have been commercialized for a fee, but they can be easily copied by customers. For this reason, it becomes impossible to recover a program that has been made at an enormous development cost, and it is necessary to protect the program product by prohibiting the program from executing on other hardware of the same model. To protect the confidentiality of information, for example, as described in Japanese Patent Laid-Open No. 56-153462, when the input code string and the secret code string match, the protection of the confidential processing is canceled and the confidential service is provided. It is known that the parts operate, but the date of the hardware,
No consideration is given to treating time as a secret code.

[Problems to be solved by the invention]

In the above conventional technology, when the program product is provided to the user, the prohibition of the program execution is not taken into consideration, and the medium in which the program is copied can be executed by other hardware of the same model, so the program cannot be protected. There was a problem.

An object of the present invention is to solve such a conventional problem and to provide a program execution prohibition method capable of prohibiting execution of a copied program on other hardware of the same model.

[Means for solving problems]

In order to solve the above-mentioned problems, according to the present invention, when a program medium is set in certain designated hardware, the date and time counted by a timer built in the hardware is set as unique information of the program medium. By writing the random number consisting of minutes and seconds and the program registration information for each program in the program medium to the backup RAM with battery in the above hardware and the above program medium, the program execution by the hardware other than the above specified is prohibited. There is a feature in doing it.

[Action]

A hardware timer value is used as the random value in the present invention, but it is a value of year, month, day, hour, minute, and second, and when writing to the backup RAM with battery and the program medium,
It becomes hardware-specific information and corresponds to a unique serial number. Further, the information written in the backup RAM is not erased even when the power of the hardware is cut off. Accordingly, even if the program medium is copied and the program is executed by other hardware of the same model, the unique information (that is, the random number value) does not match, so that the program execution can be prohibited.

〔Example〕

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

FIG. 2 is a block diagram of an information processing system to which the present invention is applied.

In FIG. 2, 10 is a processing device that processes various data, 11 is an input device such as a keyboard, 12 is an external storage device such as a floppy disk or a hard disk, and 13
Is a hardware timer, and 14 is a backup RAM with a battery (hereinafter referred to as backup RAM) for storing program protect information and the like, and the information in the backup RAM 14 is stored even when the power of the processing device 10 is cut off.

FIG. 3 is a diagram showing a configuration example of the information table stored in the backup RAM 14 shown in FIG.

In FIG. 3, 20 is an information table for storing information for protecting a program, and 21 is a program protect information area set in the information table 20.

FIG. 4 shows the program protect information area 2 of FIG.
It is a figure which shows the form of 1.

In FIG. 4, reference numeral 30 is an identifier showing the program protect information, and in the following, it is shown that the protect information is set by setting the weaving machine “R”. Reference numeral 31 denotes a random number value defined by this information processing system. This random number value is a variable value set by the initial setting program shown in FIG. Reference numeral 32 indicates program registration information to be protected. That is, it has 1-bit information corresponding to the program, and 0 indicates unregistered and 1 indicates registered.

FIG. 5 is a diagram showing a configuration example of a program product unique information table stored in the program medium. This unique information table is a table set for each program product (hereinafter referred to as PP) in the program medium, and has a specific disk address (writable,
Store in the unreadable area).

In FIG. 5, reference numeral 40 denotes an identifier of the unique information table. In the following, when the identifier “MS” is set, it is processed as a normal program medium, and when “MS” is not set, it is an invalid program medium. Process as. 41 is the program number of each PP. This value is
Corresponding to the bit position of the program registration information 32 shown in FIG. 4, the program of the corresponding program number is already registered to be executed by the designated hardware. Reference numeral 42 indicates a registration classification, where (0000) ₁₆ indicates unregistered and (FFFF) ₁₆ indicates registered. When the program of the corresponding program number is executed by the designated hardware, this registration section 42
Registered, it will be Sunawa (FFFF) ₁₆ . 43 is the same random number value as the value set as the random number value 31 in FIG. This random number value 43 is used for the backup RAM 1 when the program of the corresponding program number is executed by the designated hardware.
Input from 4 and set in this area. Reference numeral 44 is a spare area for future expansion. Here, before shipping the program medium (such as a floppy disk), it is assumed that the fabric segregator “MS” and the PP number (program number) are written in advance for each PP.

FIG. 6 is a processing flowchart of the initial setting program that sets a random number in the program protect information area 21 of the backup RAR 14 of FIG. Below, the second
The random number value setting operation will be described with reference to FIG.

First, when an arbitrary character is input from the input procedure 11,
(601), the program stored in the processing device 10 reads the date and hour / minute / second of the hardware timer 13 and stores this as a random number value (602).

Further, the program protect information in the backup RAM 14 is input (603) and it is checked whether the identifier 30 is "R" (604). If it is not "R", the random number value "year, month, day and hour, minute, second" for which the identifier "R" is obtained is registered in the backup RAM 14 and, at the same time, the program (PP) registration information area 32 is cleared to zero (6
05,606).

The program shown in FIG. 6 is the first program to be executed on the hardware shown in FIG.

The program registration information 32 in the program protection information area 21 is stored by setting the PP registration information flag corresponding to the designated PP number.

FIG. 1 is a diagram for explaining a program execution prohibition system showing an embodiment of the present invention. This is the processing device 10
7 shows a processing flow when a program is executed in the external storage device 12 according to the above, and a program for processing to protect the program execution is incorporated in each PP in the program medium set in the external storage device 12.

First, the registration information corresponding to the program number in the backup RAM 14 of FIG. 2 is read, and the PP registration information is checked (101). This check first checks whether the identifier of the program protect information area 21 is "R", and if it is not "R", it is determined to be incorrect and the process is terminated. In the case of "R", the random number value 3 obtained in the process of FIG. 6
1 is set in the parameter table, and the PP registration information flag corresponding to the designated PP number of the program registration information 32 is checked.

After checking the PP registration information (102), if the PP registration information flag is not registered, the external storage device 12 of FIG.
The unique information of the program medium set in (1) is input (103), and it is checked whether the identifier 40 is "MS" (104). If it is not "MS", it is an illegal program medium and an error message such as "This program cannot be executed" is output to the display device (not shown) (1
10) Prohibit execution of this program. If it is "MS", it is processed as a normal medium and the registration section 42 of FIG. 5 is checked (105). If it is not registered, the program registration information 32 in the backup RAM 14 32
The hit corresponding to the number is set to "1" (106). Next, the program registration information 32 in the backup RAM 14 is checked, and if normal (107), the registration division 42 in the PP medium unique information is set to (FFFF) ₁₆ (108), and the random number value in the program product information area is set. Is set in the area 43 (109).

When the registration information corresponding to the program number in the backup RAM 14 is already registered (102), the PP medium unique information is input (111), and the random number value in the backup RMA 14 and the random number value in the program product medium unique information are equal. If not (112), the process 110 is performed to prohibit the execution of the program. When they match, each PP is executed.

As described above, in this embodiment, it is possible to prohibit the execution of the program product other than the hardware designated by the program product.

〔The invention's effect〕

As described above, according to the present invention, the execution of the copied program can be prohibited by other hardware of the same model, and the program can be protected.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a program execution prohibition system showing an embodiment of the present invention, FIG. 2 is a block diagram of an information processing system to which the present invention is applied, and FIG. 3 is stored in a backup RAM. 4 is an information table configuration diagram, FIG. 4 is a diagram showing the format of the program protection information area, FIG. 5 is a configuration diagram of the program product unique information table stored in the program medium, and FIG. 6 is a processing flowchart of a program for setting a random number. Is. 30: program protect information identifier, 31: random number value, 32: program registration information, 40: unique information table identifier, 41: program product number, 42: registration classification, 43: random number value, 44: spare area.

Claims (1)

[Claims] 1. When a program medium is set in certain designated hardware, a unique value of the program medium includes a random number value consisting of year / month / day / hour / minute / second counted by a timer built in the hardware and A program characterized by prohibiting program execution by hardware other than the above-mentioned designation by writing the program registration information for each program in the program medium in the backup RAM with battery in the hardware and the program medium Execution prohibition method.