JP2002312052A - Computer program, its generating method, and providing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a computer program from being copied illegally. SOLUTION: A network install server 1 embeds a physical address, etc., of a specific file acquired from a user computer 2 in the computer program as a proper ID and provides it to the user computer 2. This program reads the proper ID from the user computer 2 and executes the program body only when it is identical to the proper ID embedded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer program capable of preventing unauthorized copying, a method of generating a computer program, and a method of providing a computer program.

[0002]

2. Description of the Related Art In recent years, with the introduction of IT in various businesses, services to customers have been provided by computer application software and electronic data. In the past, the business of manufacturing and selling computer software has also become increasingly popular.
On the other hand, software programs and electronic data are easy to copy due to their nature, and there are many parts that depend on the user to prevent unauthorized copy use. Unauthorized copies are being distributed.

[0003]

Conventionally, there are several methods for preventing unauthorized copying, but these methods have the following weaknesses and problems.

Conventionally, in order to prevent unauthorized copying, a protection release code such as a serial number or a keyword is distributed only to authorized users. For this reason, if a protection release code is given to another computer or a third party, it will be infinitely illegally used. Further, the program to be distributed can be easily distributed via a network, CD-R, or CD-R / W, and can be executed on a large scale.

[0005] In order to prevent unauthorized copying, a product ID (product number) using a network may be registered as a user and monitored. For this reason, unless individual authentication is performed on the network, it cannot be determined whether the registration is by a regular user or an unauthorized copy. (Even if double registration is monitored, it is impossible to determine whether it is a case where an authorized user reinstalls or replaces a PC, or an unauthorized copy is registered. Normally, double registration is permitted. ) Also, in order to prevent unauthorized copying, hardware keys that cannot be copied or analyzed (such as parallel port dongles or USB)
Key) may be distributed only to authorized users. Therefore, the cost of the hardware key is large, and the software program to be sold becomes expensive. In addition, it is costly to take measures against a failure or loss of a hardware key. (Even if reissued, the actual cost or more will be imposed on legitimate users.) Such unauthorized copying has suffered considerable damage to software vendors, and consumers can be easily damaged by unauthorized copying. Moral decline is also a concern.

Accordingly, the present invention has been made in view of the above-mentioned conventional circumstances.
An object of the present invention is to provide a computer program capable of preventing unauthorized copying of a program, a method of generating a computer program, and a method of providing a computer program.

[0007]

According to a first aspect of the present invention, there is provided a computer program which can be executed by specifying a computer, wherein the computer program is a storage medium fixed to the computer. The physical address of the specific file on the medium is read, and it is determined whether or not the read physical address matches the physical address set in advance in the computer program. The solution is a computer program that executes the set processing.

According to a second aspect of the present invention, the specific file is a read-only file, a system file,
The computer program according to claim 1, wherein the file has one of the attributes of a hidden file.

According to a third aspect of the present invention, a physical address of a specific file on a storage medium fixed to a computer to be executed is read, and the read physical address and a preset physical address are read. A method of generating a computer program capable of specifying and executing a computer configured to execute a preset process when a match is found, wherein the physical address of the obtained specific file is used as the preset physical address. A solution is a method of generating a computer program, wherein the method is set in the computer program.

According to a fourth aspect of the present invention, there is provided a computer program capable of specifying and executing a computer, wherein the physical address of a communication component provided in the computer is read, and the read physical address and It is determined whether or not the physical address set in the computer program matches, and if it is determined that the physical address is set, the computer program executes a process set in advance in the computer program. I do.

According to a fifth aspect of the present invention, a physical address of a communication component provided in a computer to be executed is read, and when the read physical address matches a preset physical address. A method for generating a computer program capable of specifying and executing a computer configured to execute a preset process, wherein the acquired physical address of the communication component is stored in the computer program as the preset physical address. A solution is a method of generating a computer program characterized by setting.

According to a sixth aspect of the present invention, there is provided a method of providing a computer program capable of specifying and executing a computer, wherein the specific file is a read-only file on a storage medium fixed to the computer. The physical address of a file having one of the attributes of a file, a system file, and a hidden file, and the physical address of a communication component provided in the computer are acquired via a communication line, and the storage is fixed in the computer to be executed. The physical address of the specific file on the medium and the physical address provided in the computer are read, and when the read physical addresses and the corresponding physical addresses set in advance satisfy a predetermined matching condition. The acquired physical address is sent to a computer program for executing a predetermined process. Set the scan as a physical address the preset, and solutions have a method for providing a computer program characterized by providing a computer program which this setting has been made to the computer via the communication line.

According to a seventh aspect of the present invention, the computer is authenticated by a caller ID notification corresponding to a communication line used by the computer in advance. The method for providing a computer program described above is defined as a solution.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a network installation system according to an embodiment of the present invention.

In this system, in order to use the program only on a specific computer (referred to as a user computer 2 in the embodiment), the network install server 1 The identification information (unique ID or computer unique ID) is set in the program distributed to the user computer 2 (given to the program itself) and distributed (transmitted) to the user computer 2 via the network.
I do.

In the user computer 2, the program reads out the unique ID from the user computer 2, and if the unique ID and the unique ID embedded in the program satisfy the matching condition, the processing of the program itself is executed. It is supposed to run.

The user computer 2 includes not only computers but also devices having computer functions, for example, mobile phones, PHS terminals, home gateway devices, and Internet home appliances.

In the present embodiment, the physical position information of the specific file on the hard disk and the MAC address of the LAN card are used as the unique ID.

Before describing the network installation server 1 and the user computer 2, an outline of the present invention and a base technology will be described.

Specifying a computer means that authentication can be performed. So far, authentication on the network has mainly been discussed about user authentication. However, the concept of this user is
It is not always possible to identify a person that exists in the real world. In other words, they don't really know who they are. Therefore, when trying to apply real-world actions such as collection of goods or exchange of money, the connection with the real world is always separately performed by replacing “user” with “(existing) card number”. There must be. The computer of the present invention is a physical "thing"
It is possible to create a connection between "things" and "users" existing in the real world. Some services provided on the Internet are complete on the Internet and others are connected to the real world. The present invention can be one of effective solutions in the latter service.

FIG. 2 is a diagram showing a physical data storage method of a hard disk. FIG. 3 is a diagram showing physical addresses.

For example, the procedure for storing the file "alpha" on the hard disk is as follows. Procedure Check the size of "alpha" to see if it can be stored. Procedure Collect free clusters on the hard disk. Procedure Divide "alpha" into minimum cluster sizes. Procedure To the position of each cluster, "alp
ha ”is stored. Procedure The position information of each cluster having the data element "alpha" is stored in the file name al.
pha is mapped and stored in the data table.

In the above procedure, which cluster is assigned to a certain file differs depending on the use condition of the computer, that is, where the free area is on the recording medium. This is because the computer uses the hard disk efficiently in order from the empty area. For example, even if a file "beta" having the same contents and contents of data is stored in the same directory location (logical location) of two computers, the physical location on the hard disk is not necessarily the same. The probability of becoming the same decreases as the capacity of the hard disk increases. For example, if a 20 GB hard disk is used in a 2 KB cluster block, the probability of being stored at the same physical location is 2 KB / 2
0GB = 2000/20000000000 = 1,00
It becomes 1 / 100,000. Strictly speaking, what is the cluster size?
The probability is further reduced depending on whether it is B, fixed size or variable. Since it is difficult to remove and replace the hard disk, it is possible to reliably identify the computer.

On the hard disk, free areas corresponding to the size of the file storing the free areas are collected. This free area is divided into cluster sizes.
Prepare as many partitions as you can finally store files. The partitions used for storing one file are not continuous on the disk, but are discrete. In order to efficiently use the area of the hard disk, an empty area is picked up from the inside of the disk and prepared, and if there is an empty area near the inside, the area is allocated from there.

Here, by embedding the physical address of a certain file as an ID unique to a computer in a distribution program and comparing it at the time of operation, a program that operates only on that computer becomes possible.

Each program has a unique ID of a certain computer (hard disk physical storage location information of a certain file), and the operation of the program is (1) checking the physical address of a certain file (in this example, "alpha"). (2) Unique ID embedded in itself
Compare with (3) If they match, the operation is performed. If they do not match, the operation ends.

By doing so, this program will not run on any computer other than a specific computer (a computer that is entitled or entitled to receive the program and services such as payment), so it is illegally copied and used. You can't do that.

Here, the hard disk physical storage position information (physical address) will be described in detail.

As shown in FIG. 3, the address of a certain file on the hard disk (cylinder No .: head No .: sector No. or cluster block address) is as follows.

File data is divided and stored in units of cluster blocks allocated by an OS (Operating System) file system. A cluster block is composed of a group of physical minimum units (sectors) on a disk. Therefore, the input and output of the file is the file name (location on the file system)
→ cluster block position → managed by physical structure position (cylinder No .: head No .: sector No.) The physical structure position and cluster block position of a certain file differ depending on the size of the hard disk of the computer and the operation system. In addition, since the disk space is allocated to newly added files from the free space, even if the computer has the same hardware configuration, it is used for a period of time, and the position on the physical structure allocated according to the method of use. Are different.
However, the addresses on the disk are not unique. Assuming that there are two computers each having a 20 GB hard disk, the probability that an address on the same disk is assigned to a certain file is 1 / 10,000,000 when the cluster size is 2 KB. Considering the tendency of hard disk capacity to increase in the future, it is a sufficient figure for specifying computers for software distribution. However, at the time of actual operation, it is assumed that there is a failure,
By adding the next MAC address to the ID unique to the computer and using it under the OR condition, further convenience is ensured.

Here, the M of an Ethernet card (LAN card, also called NIC: Network Interface Card)
The AC address will be described.

The MAC address of the Ethernet card is a 6-byte code, the first 3 bytes of which are a vendor code, and the remaining 3 bytes are codes which are managed so as not to be duplicated within the vendor. It is. (The code pattern is 281,474,97671
Since there are some which can be freely inserted and removed to some extent, it is possible to support the specification of the computer by using it under the OR condition in anticipation of a failure of the hard disk or replacement of the computer at the time of actual operation.

Next, the uncertainty of the cluster block will be described with reference to FIG.

The file data is divided and stored in units of cluster blocks allocated by the file system of the OS. Reading data collects and joins all clusters that make up the data, and writing data divides the file into cluster units.

The disk area is divided into cluster units. When a new file is written, the file area is allocated from an empty area. Therefore, fragmentation (cluster block generation) is performed while data erasing and writing are repeated. Discontinuity) occurs. If a lot of fragmentation occurs, naturally disk I / O
In order to solve the problem, there is a so-called defragmenter tool as software for connecting data and writing the data one by one in order from the head. Since the address of the file on the disk fluctuates due to the defragmentation tool, it is possible that the file becomes fluid and indeterminate.

However, most of the defragmentation tools
Look at the attribute of the file to be moved, and click "Hidden file".
If it is a "system file" or "read-only file", the file is not moved exceptionally. Therefore, the addresses of those files on the disk do not change unless the disk is formatted or the OS is reinstalled. Moreover, the address is different for each computer. Therefore, if a certain file is given a hidden file / system file / read-only attribute and the address where the file is stored is written in the file, the file is copied or not by comparing with the address of the storage location. Can be detected.

Next, the hash value will be described.

The hash value is 1 called a hash function.
The value obtained by the directional function is a one-way hash function, and the value obtained cannot be returned to the original value.
The algorithm is M
D5. SHA-1 and the like. For example, MAC address 0
0: 00: E2: 11: C6: C1 with algorithm SH
When applied to the hash function of A-1, E2C94DA02
2471F7E813F325FF2D949D1 (size 128 Bytes) and the algorithm MD5
When applied to the hash function of 5BD90EEC626D
DFDE60852F1A3EAC9BE3177E7
963 (size 160 Bytes).

For example, disk sector address 0255
CYL-000HED-01SEC algorithm SH
When applied to the hash function of A-1, 11170A7322
32655D72F268E0088B3CFF (size 128 Bytes), which is 34C72089A99B8 when applied to the hash function of the algorithm MD5.
5034E21A04B9B94DF700E5337
35 (size: 160 Bytes).

The original value of the hash value is unique to the computer, and the hash value is different for each computer on which the program is installed. Even if the program is installed on a different computer and the program is copied, the installer B 'and the program itself do not operate because the hash values are different. Even if an attempt is made to generate a hash value, the original value cannot be determined by looking at the hash value.

Therefore, even if the hash value is analyzed, the unique I
Knowing D is almost impossible. FIG. 5 is a sequence diagram of the installation management via the network. FIG. 6 is a diagram showing operating conditions of network installation set in the customer DB 11.

The network installation server 1 has a customer DB 11 for storing data relating to customers, and a program DB 12 for storing a program main body which is a main body of a program provided to the user computer 2. These DBs 11 and 12 are configured in a storage area in a storage device such as a hard disk.

Further, a program generating unit 13 for performing processing such as embedding a unique ID in the program body is provided so that the user computer 2 can exchange programs and the like. The program generation unit 13 is realized by executing a processing program stored in the network installation server 1 in advance for generating a program.

The user computer 2 includes a network installer 21 which is a program optimized for using the network installation server 1.
When a program ID or a customer ID is input and a predetermined operation is performed, the network installer 21 transmits the program ID and the customer ID to the network install server 1 to request a program. The operation of the embodiment will be described.

As shown in FIG. 6, conditions for giving various permissions are set in the customer DB 11. A data string for each program used by the customer in the customer DB 11, specifically, a customer ID of the customer, a program ID of the program purchased by the customer, and “purchase” indicating that the customer has already purchased are set. Status, status,
A computer unique ID (MAC address) and a computer unique ID (file address of the hard disk) are set.

To permit installation, it is necessary that the status, the computer unique ID (MAC address), and the computer unique ID (file address of the hard disk) have not been set. Such a value is the installation permission condition.

To permit uninstallation, the status is “installed” and the computer unique ID (MA
The MAC address transmitted from the customer's computer and the file address of the hard disk must be set in each of the C address) and the computer unique ID (the file address of the hard disk). Such a value is the uninstall permission condition.

It is necessary that the set customer ID and the transmitted customer ID match in order to permit re-installation when the user changes the computer used. In addition, assuming a hard disk failure or uninstall failure, the customer ID or program ID
May match the one transmitted from the user computer 2.

As shown in FIG. 5, in the network installation server 1, a customer ID for authentication is generated in advance from customer information such as the telephone number of the customer who purchased the program, and the program ID of the program purchased by the customer is generated. Are stored in the customer DB 11 in association with each other.

On the other hand, the network installation server 1
The network installer 21 that controls the installation of the program on the user computer 2 and the like is distributed according to the instruction from the user, and is installed in the user computer 2 in advance.

As shown in FIG. 5, a program ID and a customer ID of a program to be installed are registered in the network installer 21.

First, the network installer 21 scans the inside of the user computer 2 and limits specific files (files having a read-only / system / hidden file attribute).
Thereafter, the address of the file “file F1” on the hard disk is acquired as the unique ID. Further, the network installer 21 scans the user computer 2 and acquires the MAC address of the LAN card as a unique ID. Then, the client ID, the program ID, the two unique IDs, and the installation request are transmitted to the network installation server 1 (step S1).

On the other hand, the network installation server 1 checks whether the customer ID and the program ID are qualified for the installation by referring to the installation permission condition stored in the customer DB 11. If the user is qualified, the network install server 1 sends the program (program A)
) Is read from the program DB 12, and the hash value of the transmitted unique ID is embedded as the operation restriction identification information to generate a program A-1 and transmitted to the user computer 2 (step S3).

The transmitted program A-1 is stored in the user computer 2 and is sent to the network installer 21.
Automatically started by Activated program A-
1 determines whether the unique ID in the user computer 2 matches the unique ID embedded in the program A-1, and if so, notifies the network installation server 1 that the installation has been completed. (Step S
5). It should be noted that when the physical addresses of the file F1 match and the MAC addresses match, the determination result of “match” may be used, or when one of them matches, the determination result of “match” may be used. . In the following, similarly, a criterion is appropriately determined, and a determination can be made based on the criterion.

The network installation server 1 that has received the notification reflects this completion notification in the customer DB 11 and the program DB 12. That is, the status is set to “installed”, and the physical address and the MAC address of the file F1 on the hard disk are set. Then, a process of counting the number of shipments is performed.

On the other hand, in the user computer 2,
The main program A included in the program A-1 performs processing that should be executed.

The operation of the program in the installation management sequence will be described with reference to a flowchart.

FIG. 7 is a flowchart showing the flow of processing when transmitting a unique ID.

The customer ID is stored in the network installer 21.
And the program ID of the program to be downloaded (step S101), the network installer 21 first scans the user computer 2 and finds the address of the file F1 on the hard disk, that is, the unique ID.
D is acquired (step S103). Next, the user computer 2 is scanned, and the MAC of the NIC (LAN card) is scanned.
Acquire an address (unique ID) (step S10)
5). Next, these unique IDs are transmitted to the network installation server 1 (step S107).

On the other hand, the network installation server 1 searches the customer DB 11 for the customer ID and the program ID, confirms whether or not the user is qualified, and stores the unique ID in the customer DB 11 if the customer is qualified ( Step S109).

FIG. 8 is a flow chart showing the flow of processing at the time of network distribution. First, the program generation unit 13 applies the transmitted unique ID to a hash function (step S111). Next, the obtained hash value is stored in the program A to generate the program A-1 (step S113). Then, the generated program A-1 is transmitted to the user computer 2 (Step S).
115).

FIG. 9 is a flowchart showing the flow of processing after distribution. Network install server 1
First, the network installer 21 sent from
The computer is scanned to obtain a unique ID and is applied to a hash function (step S121). Next, the obtained hash value is compared with the hash value embedded in the network installation server 1 (step S123). Here, if they do not match, an error is output and the operation ends (step S125). On the other hand, if they match, the program body is extracted and operated (step S127).

FIG. 10 is a flowchart showing the flow of processing when transmitting a completion notification. Network installer 21 when the program is distributed to authorized users
Is customer ID, computer unique ID, program ID
Is transmitted to the network installation server 1 (step S131). Network install server 1
Registers the ID in each DB and changes the installation status flag (step S133).

Next, uninstall management via a network will be described. FIG. 11 is a sequence diagram of uninstall management via a network. As shown in FIG. 11, in the network installation server 1,
The unique ID of the customer who purchased the program and the program ID of the installed program are registered in the customer DB 11 in advance.

When the network installer 21 is started with the uninstall option, the inside of the user computer 2 is scanned to acquire a unique ID. Then, the network installer 21 checks the customer ID and the program ID.
And a unique ID and an uninstall request to the network install server 1 (step S11).

On the other hand, the network install server 1 refers to the uninstall permission condition of the customer DB 11 and confirms whether or not there is a qualification for uninstall. If there is a qualification, an uninstall command is issued and transmitted (step S13).

The network installer 21 starts the uninstallation, and when the uninstallation is normally completed, a notice of the completion of the uninstallation is sent to the network install server 1.
(Step S15).

The network installation server 1 that has received the notification reflects the completion notification in the customer DB 11 and the program DB 12. That is, the corresponding status in the customer DB 11 is set to “uninstall”.

Next, installation management when access control based on caller number authentication is added will be described. FIG. 12 is a sequence diagram of installation management when access control based on caller ID authentication is added. As shown in FIG. 12, the telephone number of the customer who purchased the program is registered in advance in the FLET'S office network (IP network provided for each prefecture, “regional IP network”) and the customer DB, and further, the telephone number and the like are registered. The customer information and the user name for authentication are stored in the customer DB 11 in association with each other.

On the other hand, the program ID of the program to be installed is registered in the network installer 21.

First, the telephone line number (caller number) used by the user computer 2 is transmitted to the remote access server (RAS) of the local IP network (step S2).
1) The caller is authenticated in the RAS. That is,
Connection is allowed only from registered phone numbers. Note that this notification is called a caller ID notification.

When the connection is permitted, the network installer 21 transmits the user name and the password to the network installation server 1 (Step S23), and the network installation server 1 responds to this (Step S25). Thereafter, the same processing as the processing shown in FIG. 5 is performed.

The uninstall management when access control based on caller ID authentication is added is shown in FIG. 13 as a sequence diagram of uninstall management when access control based on caller ID authentication is added. The same sender authentication and response as in the processing shown in FIG. 12 are performed, and then, the uninstall management similar to the processing shown in FIG. 11 is performed.

In this embodiment, unauthorized copying of the program is prevented by the computer unique ID. Also, since uninstallation management is performed, duplicate installations cannot be performed. That is, the program for installation is not transmitted unless it is uninstalled.

A processing program for executing the above-described processing is recorded on a computer-readable recording medium such as a semiconductor memory, a magnetic disk, an optical disk, a magneto-optical disk, and a magnetic tape, and this recording medium is stored in a computer system. By incorporating and installing or downloading the program recorded on this recording medium into a computer system and operating the computer system with this program, it is possible to function as a program generation device for executing the program generation method. In addition, by using such a recording medium, its distribution can be enhanced.

In the above-described embodiment, the physical address of the file F1 and the physical address of the LAN card are used as means for specifying the user computer 2. Instead of these, the serial number of the CPU, the IC card, and the like are used. Hardware identification information such as a fingerprint authentication device can be used.

As described above, according to the present embodiment, the program A-1 which can specify and execute the user computer 2 is stored in the storage medium fixed to the user computer 2, that is, the specified program on the hard disk. The physical address of the file F1 and the physical address of the LAN card which is a communication component provided in the user computer 2 are read, and whether or not the read physical address matches the physical address preset in the program A-1 is determined. Is determined, and if it is determined that they match, the process of the program main body set in advance in the program A-1 is executed. Therefore, the program A-1 does not operate on another computer, and therefore, the program A-1 is illegally copied. Can be prevented.

The specific file is a read-only file,
Since the file has one of the attributes of the system file and the hidden file, an illegal copy of the program can be more reliably prevented by the physical address which does not change even when the fragmentation occurs.

The physical address of the file F1 on the storage medium fixed to the user computer 2 and the physical address of the communication component provided in the user computer 2 are read, and the read physical address and the physical address set in advance are read. When generating a program A-1 which executes a preset process when the address matches, the physical address of the obtained specific file is used as the preset physical address. Since it is set to 1, it will not work on other computers, so
A computer program that can prevent unauthorized copying of a program can be generated.

In providing the computer program A-1 which can execute the user computer 2 by specifying the user computer 2, a specific file on a storage medium fixed to the user computer 2, such as a read-only file, a system file, File F with any attribute of hidden file
1 and a physical address of a communication component provided in the user computer 2 via a communication line, and executes a physical address of a specific file on a storage medium fixed in the computer, and the computer And a computer program that executes a predetermined process when each of the read physical addresses and each corresponding physical address set in advance satisfy a predetermined matching condition. The network installation server 1 performs a computer program providing method of setting the obtained physical address as the preset physical address and providing the computer program with the setting to the computer via the communication line. So, even with this method, Unauthorized copy of a can be prevented.

Further, since the RAS of the local IP network authenticates the computer by using a caller ID notification corresponding to the communication line used by the user computer 2 in advance, the method can more reliably prevent unauthorized copying of the program. Can be prevented. Further, since the customer can be specified by the caller number, an additional effect that the program can be sold by post-payment can be obtained.

[0082]

As described above, according to the present invention,
Read the physical address of a specific file on a storage medium fixed to the computer or the physical address of a communication component provided in the computer, and check whether the read physical address matches the physical address set in the computer program in advance. It is determined whether or not the program is the same, and when it is determined that the program matches, the computer executes a process set in advance in the computer program. Therefore, the program cannot be executed on another computer. Can be prevented.

Further, according to the present invention, the physical address of a specific file on a storage medium fixed to the computer to be executed or the communication component provided in the computer is read, and the read physical address is set in advance. When generating a computer program that executes a preset process when the obtained physical address matches, the obtained physical address of the specific file is set in the computer program as the preset physical address. As a result, this program cannot be executed on another computer, and therefore, unauthorized copying of the program can be prevented.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a network installation system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a physical data storage method of a hard disk.

FIG. 3 is a diagram showing physical addresses.

FIG. 4 is an explanatory diagram relating to uncertainty of a cluster block.

FIG. 5 is a sequence diagram of installation management via a network.

FIG. 6 is a diagram showing operating conditions set in a customer DB 11;

FIG. 7 is a flowchart showing the flow of processing when transmitting a unique ID.

FIG. 8 is a flowchart showing the flow of processing at the time of network distribution.

FIG. 9 is a flowchart showing the flow of processing after distribution.

FIG. 10 is a flowchart illustrating the flow of processing when transmitting a completion notification.

FIG. 11 is a sequence diagram of uninstall management via a network.

FIG. 12 is a sequence diagram of installation management when access control based on caller ID authentication is added.

FIG. 13 is a sequence diagram of uninstall management when access control based on caller number authentication is added.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Network installation server 2 User computer 11 Customer DB 12 Program DB 13 Program generation part 21 Network installer

Continued on the front page (72) Inventor Seiji Saikawa 3-15 Babacho, Chuo-ku, Osaka-shi, Osaka Inside Nippon Telegraph and Telephone Corporation (72) Inventor Sachio Tokusa 3-15 Babacho, Chuo-ku, Osaka-shi, Osaka No. Nishi Nippon Telegraph and Telephone Corporation (72) Inventor Etsuji Inoue 3-15 Babacho, Chuo-ku, Osaka City, Osaka Prefecture Nishi Nippon Telegraph and Telephone Corporation (72) Inventor Teruaki Mizumoto Central, Osaka City, Osaka Prefecture 3-15 Babacho, Ward, Nishi Nippon Telegraph and Telephone Co., Ltd. (72) Inventor Shuichiro Watanabe 3-15, Babacho, Chuo-ku, Osaka City, Osaka Pref. 3-15 Babacho, Chuo-ku, Osaka-shi F-term (reference) in Nippon Telegraph and Telephone Corporation

Claims (7)

[Claims] 1. A computer program which can be executed by specifying a computer, wherein the physical address of a specific file on a storage medium fixed to the computer is read, and the read physical address is set in advance in the computer program. A computer program for determining whether or not a physical address matches, and executing a process preset in the computer program when it is determined that the physical address matches. 2. The method according to claim 1, wherein the specific file is a read-only file,
2. The computer program according to claim 1, wherein the file has one of a system file attribute and a hidden file attribute. 3. A physical address of a specific file on a storage medium fixed to a computer to be executed is read, and a predetermined process is executed when the read physical address matches a predetermined physical address. A method of generating a computer program capable of specifying and executing a computer, wherein a physical address of the obtained specific file is set as the preset physical address in the computer program. How to generate a computer program. 4. A computer program which can be executed by specifying a computer, wherein a physical address of a communication component provided in the computer is read, and the read physical address and a physical address previously set in the computer program are read. A computer program for determining whether or not they match, and executing a process preset in the computer program when it is determined that they match. 5. A physical address of a communication component provided in a computer to be executed is read, and a predetermined process is executed when the read physical address matches a predetermined physical address. A method of generating a computer program that can be executed by specifying a computer, wherein a physical address of the obtained communication component is set in the computer program as the preset physical address. Method. 6. A method for providing a computer program that can be executed by specifying a computer, wherein the file is a specific file on a storage medium fixed to the computer, the file being a read-only file, a system file, or a hidden file. The physical address of the file having the attribute and the physical address of the communication component provided in the computer are acquired via the communication line, and the physical address of the specific file on the storage medium fixed to the computer to be executed is obtained. A computer program that reads a physical address provided in a computer and executes a predetermined process when each of the read physical address and each corresponding physical address set in advance satisfies a predetermined matching condition. On the other hand, the obtained physical address is replaced with the preset physical address. Set as the scan method of providing a computer program characterized by providing a computer program which this setting has been made to the computer via the communication line. 7. The computer program providing method according to claim 6, wherein said computer is authenticated by a caller ID notification corresponding to a communication line used by said computer in advance.