JP2002182770A - Recording medium having normal user authentication function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording medium capable of simplifying the authentication work of normal user and also preventing an illegal use by an illegal copy. SOLUTION: First, identification information in a BCA area is read according to a normal user authentication program (S100). An application identification code included in the read identification information is compared with a normal application identification code described in the authentication program (S102), and whether or not the codes coincide with each other is judged (S103). When the codes coincide, the user of the read identification information is judged to be a normal user allowed to use the original disk, a software program is installed according to an install program (S104) and the processing is finished. Meanwhile, when the codes do not coincide, the user is judged to be an illegal user, the processing is finished without conducting the install program.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium with an authorized user authentication function, and more particularly, to a computer-readable recording medium for supplying content to a content reading terminal.

[0002]

2. Description of the Related Art Conventionally, when installing and using software recorded on a CD-ROM, it is usually necessary to input a CD key at the time of installation or at the time of activation after installation. At this time, the software cannot be used unless a predetermined CD key is input.

The CD key is usually described in a CD-ROM, a case, a manual, or the like. Therefore, if the CD-ROM on which the software is recorded is illegally copied, the user who has obtained the illegally copied media will not receive the CD-ROM.
I don't know the key. For this reason, the original CD-RO
Only authorized users who have purchased M can use the software.

[0004]

However, in the above-mentioned method, it is necessary for the user to manually input a CD key at the time of installation or the like, and a case or a manual describing the CD key is not lost. The problem is that it takes time and effort to manage it.

[0005] Furthermore, if the user who has obtained the illegally copied media also obtains the CD key at the same time, there is also a problem that the illegal use of the software by this user cannot be prevented.

[0006] Therefore, an object of the present invention is to provide a recording medium that can simplify the authentication work of an authorized user and prevent unauthorized use by unauthorized copying.

[0007]

A first aspect of the present invention is a computer-readable recording medium for supplying a content to a content reading terminal, the data storage storing the content and a predetermined program. An area and a non-rewritable area for storing predetermined unique information, wherein the predetermined program reads the predetermined unique information to the content reading terminal, and executes the step based on the read predetermined unique information. A program for executing an authentication step of authenticating an authorized user and an activation step of validating the content according to an authentication result of the authentication step.

As described above, according to the first aspect, the use of the content is restricted by using the unique information recorded in the non-rewritable area. Therefore, the user manually inputs the ID or the like. Authentication can be performed without any problem, and use of content illegally copied to media other than the original media can be prevented.

In a second aspect based on the first aspect, the non-rewritable area is a BCA area (Burst) of a DVD.
Cutting Area).

As described above, according to the second aspect, a BCA area unique to a DVD can be used as a non-rewritable area.

[0011] In a third aspect based on the first aspect, the content is a software program, and the activating step installs the software program according to an authentication result of the authentication step. .

As described above, according to the third aspect, installation of the software program is restricted in accordance with the authentication result, so that unauthorized use of the software due to unauthorized copying can be prevented.

In a fourth aspect based on the first aspect, the content is encrypted and stored in the data storage area, and the validating step is performed in accordance with an authentication result of the authentication step. It is characterized in that the content is decrypted.

As described above, according to the fourth aspect of the present invention, since the decryption of the encrypted content is restricted based on the authentication result, it is possible to prevent unauthorized use of the software due to unauthorized copying.

[0015] In a fifth aspect based on the first aspect, the predetermined unique information includes a content identification code for identifying the content, and the authenticating step is such that the content identification code matches a regular content identification code. It is characterized in that the authenticated user is authenticated by determining whether or not to perform the authentication.

As described above, according to the fifth aspect, the authentication can be easily performed by determining whether or not the content identification information matches the legitimate content identification information.

In a sixth aspect based on the first aspect, the predetermined unique information includes a check digit, and in the authentication step, a result of executing a predetermined operation based on the unique information matches the check digit. The authenticated user is authenticated by judging whether or not the user is authenticated.

As described above, according to the sixth aspect, by judging whether or not the calculation result based on the unique information matches the check digit, illegal use can be more effectively prevented.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a block diagram showing a system configuration when a software program recorded on a DVD-ROM according to a first embodiment of the present invention is installed. The DVD-ROM 100 is connected to the user terminal 200 via the DVD drive 300. The CPU 210 of the user terminal 200
The software program is installed on the hard disk 220 in accordance with the program recorded in the hard disk 220.

The DVD-ROM 100 has a BCA area (Burst Cutting) in addition to a normal data storage area.
Area) 10. The BCA area 10 is a non-rewritable area in which disc identification information 11 is written in a manufacturing stage. This identification number enables identification of each disk.

The normal data storage area stores a regular user authentication program 101, an installation program 102, and a software program 103. Authentication program 101 and installation program 102
Stores the software program 103 on the hard disk 2
20 is a program to be executed by the CPU 210 when the program is installed in the CPU 20. The authentication program 101 is a program that determines whether or not the medium 100 is an original medium that is not an illegally copied one, and performs authentication of an authorized user. Installation program 1
02 is a program for installing the software program 103.

Next, the identification information 11 stored in the BCA area 10 will be described with reference to FIG. In the present embodiment, as an example, the BCA area 10 stores a 170-byte application identification code and 1
Stores an 8-byte serial number. The application identification code is an identification code commonly given to the same software program. The serial number is an identification number serially given to a group having a common application identification code.

Hereinafter, referring to the flowchart of FIG.
CP when installing software program 103
The operation of U210 will be described. The CPU 210 first reads out the identification information 11 of the BCA area 10 according to the regular user authentication program 101 (S100). Then, the application identification code included in the read identification information 11 is compared with a legitimate application identification code described in the authentication program 101 (S10).
2) It is determined whether the codes match (S1).
03). If they match, it is determined that the user is a legitimate user who uses the original disc, and the software program 103 is installed according to the installation program 102 (S104), and the process ends. On the other hand, if they do not match, it is determined that the user is an unauthorized user, and the process ends without executing the installation program 102.

Next, a description will be given of how the above operation can prevent unauthorized use of a software program due to unauthorized copying. As described above, information in the BCA area of the DVD-ROM is recorded at the time of manufacturing the disc, and cannot be rewritten thereafter. The DVD-ROM 100 according to the present embodiment has a BCA
A predetermined application identification code is recorded in the area 10, and the same regular application identification code as the application identification code is described in the regular user authentication program 101. Therefore, when the original DVD-ROM 100 is installed, the application identification codes match, so that the installation can be performed normally.

On the other hand, a case where the recorded contents of the DVD-ROM 100 are illegally copied to another medium will be described. For example, when the copy destination medium is a DVD-RAM, the regular user authentication program 101, the installation program 102, and the software program 103 are copied to the DVD-RAM. But,
The identification information stored in the BCA area is not copied because it cannot be rewritten, and the copy destination DVD-RA
In the BCA area of M, the identification information recorded when the disc was manufactured remains recorded. Therefore, the installation fails because the legitimate application identification code described in the authentication program 101 does not match the identification information stored in the BCA area. Further, for example, when the copy destination medium is a CD-R,
The installation fails because there is no CA area itself.

In the present embodiment, the application identification code is used for authenticating the authorized user. However, the present invention is not limited to this. For example, the entire identification information in the BCA area can be used as the key information. However, in this case, since the key information differs for each disk, it is necessary to change the regular identification information described in the recognition program 101 for each disk, which requires much time and effort during manufacturing. Therefore, it is preferable to use the common identification code excluding the serial number as the key information for authentication as in the present embodiment in that the time and effort at the time of manufacturing are saved.

In this embodiment, the authorized user authentication program 101 and the installation program 102 have been described as independent programs. However, the present invention is not limited to this.
01 functions may be included.

In the present embodiment, the legitimate application identification code used at the time of authentication is the authentication program 101.
, But not limited to this, DVD-R
It may be stored in another area in the OM 100.

In this embodiment, the DVD-ROM 10
Although one software program 103 is recorded in 0, a plurality of software programs may be recorded.

As described above, according to the first embodiment,
Authorization of an authorized user can be performed without manually inputting a CD key or the like at the time of installation or the like, thereby simplifying the installation operation, and furthermore, as key information for authentication, in a non-rewritable BCA area. The use of this information prevents unauthorized use of the software program due to unauthorized copying.

(Second Embodiment) FIG. 4 shows a second embodiment of the present invention.
FIG. 10 is a block diagram showing a system configuration when a software program recorded on a DVD-ROM according to the embodiment is installed. 4, the same components as those in FIG. 1 are denoted by the same reference numerals.

The second embodiment differs from the first embodiment only in the identification information 41 in the BCA area 40 and the regular user authentication program 401 in the normal data storage area. Only points will be described.

Next, the identification information 41 stored in the BCA area 40 will be described with reference to FIG. In the present embodiment, as an example, the BCA area 40 contains an application identification code of 168 bytes and 1 when the disc is pressed.
An 8-byte serial number and a 2-byte check digit are stored. The check digit is information used when authenticating an authorized user.

Hereinafter, referring to the flowchart of FIG.
CP when installing software program 103
The operation of U210 will be described. The CPU 210 reads out the identification information 41 of the BCA area 40 according to the authorized user authentication program 401 (S200). Then, based on the information of 186 bytes including the application identification code and the serial number included in the read identification information 41, the calculation described in the authentication program 401 is executed (S202). The calculation result is compared with the check digit (S204), and it is determined whether or not they match (S206). If they match, it is determined that the user is an authorized user who uses the original disc, and the software program 103 is installed according to the installation program 102 (S20).
8), end the process. On the other hand, if they do not match, it is determined that the user is an unauthorized user and the installation program 1
02 without executing Step 02.

Next, a description will be given of how the above operation prevents illegal use of a software program due to illegal copying. As described above, information in the BCA area of the DVD-ROM is recorded at the time of manufacturing the disc, and cannot be rewritten thereafter. The DVD-ROM 400 according to the present embodiment has a BCA
A predetermined application identification code and a serial number are recorded in the area 40, and a result of performing a predetermined operation based on the information is recorded as a check digit, and the predetermined operation method is described in the authorized user authentication program 401. I do. Therefore, the original DVD-
When the ROM 400 is installed, the calculation result based on the BCA information matches the check digit, so that the installation can be executed.

On the other hand, when the recorded content of the DVD-ROM 400 is illegally copied to another medium,
Authorized user authentication program 40 for the copy destination media
1. The installation program 102 and the software program 103 are copied. However, the identification information stored in the BCA area is not copied because it cannot be rewritten. Therefore, the result of the calculation described in the authentication program 401 based on the identification information stored in the BCA area of the copy destination medium does not match the check digit in the identification information, and the installation fails. In addition, B
If there is no CA area, the installation fails.

In this embodiment, the calculation is performed based on the application identification code and the serial number.
The invention is not limited thereto, and for example, a part of the application identification code and the serial number may be used.

In the present embodiment, the installation program 102 may include the function of the authentication program 101, as in the first embodiment. In addition, the information on the calculation method is described in the authentication program 401, but may be stored in another area in the DVD-ROM 400.

In this embodiment, the DVD-ROM 40
Although one software program 103 is recorded in 0, a plurality of software programs may be recorded.

As described above, according to the second embodiment,
Authorization of an authorized user can be performed without manually inputting a CD key or the like at the time of installation or the like, which simplifies installation work, and furthermore, as key information for authentication, in a non-rewritable BCA area. The use of this information prevents unauthorized use of the software program due to unauthorized copying. And furthermore,
Since authentication is performed after calculation is performed based on the identification information in the BCA area, fraud can be more reliably prevented.

(Third Embodiment) FIG. 7 shows a third embodiment of the present invention.
FIG. 10 is a block diagram showing a system configuration when playing video content recorded on a DVD-ROM according to the embodiment. The DVD-ROM 500 is a DVD drive 3
00 is connected to the user terminal 600. The CPU 610 of the user terminal 600 reads the encrypted video content 503 recorded on the DVD-ROM 500 and displays it on the display device 630.

The normal data storage area of the DVD-ROM 500 contains a regular user authentication program 501, a decryption program 504, and an encrypted video content 505.
Is stored. The authentication program 501 and the decryption program 504 include the encrypted video content 505
Is a program executed by the CPU 610 when reproducing.

Note that the user authentication operation using the identification information 51 stored in the BCA area 50 and the regular user authentication program 501 is the same as in the first embodiment, and a detailed description is omitted here.

Hereinafter, referring to the flowchart of FIG.
The operation of the CPU 610 when playing back the encrypted video content will be described. The CPU 610 first reads the identification information 51 of the BCA area 50 according to the regular user authentication program 501 (S300). Then, the application identification code included in the read identification information 51 is compared with a legitimate application identification code described in the authentication program 501 (S302), and it is determined whether or not the codes match (S304). If they match, it is determined that the user is an authorized user who uses the original disc, and the encrypted video content 505 is decrypted according to the decryption program 504 to reproduce the video content (S306), and the process ends. on the other hand,
If they do not match, it is determined that the user is an unauthorized user, and the process ends without executing the decryption program 504.

Next, a description will be given of how the above operation can prevent unauthorized use of video contents due to unauthorized copying. Video content requires copyright protection on a file-by-file basis. Therefore, in order to prevent the video file from being illegally copied and used, it is necessary to encrypt the video file. An encrypted video file cannot be used unless it is decrypted. Therefore, in the present embodiment, the decryption program 504 for decrypting the encrypted video content 505 is used only when the authentication program 501 determines that the medium is an original medium that is not an unauthorized copy. Activate. Therefore, it is impossible to reproduce the media that has been illegally copied.

In the present embodiment, the application identification code is used for authenticating the authorized user. However, the present invention is not limited to this. For example, the entire identification information in the BCA area can be used as the key information. It is also possible to perform authentication using a check digit.

In this embodiment, the authorized user authentication program 501 and the decryption program 504 are described as independent programs. However, the present invention is not limited to this, and the decryption program 504 may include the function of the authentication program 501.

In this embodiment, the DVD-ROM 50
Although one encrypted video content 505 is recorded in 0, a plurality of video content files may be encrypted and recorded.

As described above, according to the third embodiment,
When playing back video content, encrypted video content can be played back without providing a dedicated decoder or the like that supports the encryption method of the video content to be played back, and a CD key or the like is manually input. The authentication work can be simplified because the authentication of the authorized user can be performed without performing the authentication. Further, since the information in the non-rewritable BCA area is used as the key information for the authentication, the unauthorized copy It is possible to prevent unauthorized use of video content.

[Brief description of the drawings]

FIG. 1 is a DVD-ROM according to a first embodiment of the present invention.
FIG. 1 is a diagram illustrating a configuration of a system when a software program is installed by using the system.

FIG. 2 is a BCA of the DVD-ROM according to the first embodiment.
FIG. 4 is a diagram illustrating an example of a configuration of identification information in an area.

FIG. 3 is a flowchart showing an operation at the time of installing a software program recorded on a DVD-ROM according to the first embodiment.

FIG. 4 is a DVD-ROM according to a second embodiment of the present invention.
FIG. 1 is a diagram illustrating a configuration of a system when installation is performed by using the system.

FIG. 5 is a BCA of a DVD-ROM according to a second embodiment.
FIG. 9 is a diagram illustrating another example of the configuration of the identification information in the area.

FIG. 6 is a flowchart showing an operation at the time of installing a software program recorded on a DVD-ROM according to a second embodiment.

FIG. 7 is a DVD-ROM according to a third embodiment of the present invention.
FIG. 1 is a diagram showing a configuration of a system when reproducing video content using a.

FIG. 8 is a flowchart showing an operation at the time of playing back encrypted video content recorded on a DVD-ROM according to the third embodiment.

[Explanation of symbols]

 Reference Signs List 10 BCA area 11 Identification information 40 BCA area 41 Identification information 50 BCA area 51 Identification information 100 DVD-ROM 101 Regular user authentication program 102 Installation program 103 Software program 200 User terminal 210 CPU 220 Hard disk 300 DVD drive 400 DVD-ROM 401 Regular User authentication program 500 DVD-ROM 501 Regular user authentication program 504 Decryption program 505 Encrypted video contents

Claims (6)

[Claims] 1. A computer readable recording medium for supplying content to a content reading terminal, comprising: a data storage area for storing the content and a predetermined program; and a non-rewritable non-rewritable area for storing predetermined unique information. An area, wherein the predetermined program reads the predetermined unique information to the content reading terminal; an authentication step of performing authentication of an authorized user based on the read predetermined information; and an authentication step. And a validating step of validating the content according to the result of the authentication. 2. The non-rewritable area is a BCA of a DVD.
2. The recording medium with an authorized user authentication function according to claim 1, wherein the recording medium is an area (BurstCutting Area). 3. The authorized user authentication function according to claim 1, wherein the content is a software program, and the activation step installs the software program according to an authentication result of the authentication step. With a recording medium. 4. The method according to claim 1, wherein the content is encrypted and stored in the data storage area, and the validating step decrypts the encrypted content according to an authentication result of the authentication step. A recording medium with an authorized user authentication function according to claim 1. 5. The predetermined unique information includes a content identification code for identifying the content, and the authentication step determines whether the content identification code matches a legitimate content identification code. 2. The recording medium with an authorized user authentication function according to claim 1, wherein the user is authenticated. 6. The method according to claim 6, wherein the specific information includes a check digit, and the authentication step determines whether or not a result of executing a predetermined operation based on the specific information matches the check digit. 2. The recording medium with an authorized user authentication function according to claim 1, wherein the authentication is performed.