KR101374345B1 - Resource security method, master server performing the same and storage media storing the same - Google Patents

Abstract

The present invention relates to a resource security method, wherein the resource security method is performed in a master server connected to at least one service server. The resource security method may include storing user distribution content, generating first unique resource information for the stored user distribution content, and storing the stored user distribution content at least a portion of the at least one service server And providing second unique resource information generated by the at least one content distribution server and checking for tampering of the provided user distribution content. Therefore, the present invention can prevent tampering with resources distributed to users.

Description

Resource security method, master server running it and recording medium storing it {RESOURCE SECURITY METHOD, MASTER SERVER PERFORMING THE SAME AND STORAGE MEDIA STORING THE SAME}

The present invention relates to a resource security technology, and more particularly, to a resource security method that can prevent tampering of resources distributed to a user, a master server executing the same, and a recording medium storing the same.

In recent years, as the development of information and communication technology combined with computers has accelerated, networks and the Internet have become commonplace. As information progresses through such a network, a plurality of client terminals can be connected to the main server online to share information resources such as exchanging, searching, copying, and downloading necessary information.

Korean Patent Laid-Open No. 10-2009-0050627 relates to a security system and a method in a network. In performing a stream notification security setting periodically provided from a server, only a specific field of a stream notification is updated to generate a SA table. By reducing the load on the system, unnecessary waste of system resources can be reduced.

Korean Patent Laid-Open Publication No. 10-2000-0063950 relates to a network server security system and method, which performs virtual mirroring to generate meaningless virtual information about important information on a main server and backs it to a virtual server, and accesses the main server. By monitoring one user in real time and connecting a hacker to a virtual server when a hacking activity is recognized, it is possible to maintain security of important information of system resources even if hacked, and information leaked to the outside by hackers By attaching a virus to the hacker terminal, the hacker terminal can be abnormally operated so that the hacker cannot see the information leaked to the outside.

Korean Patent Publication No. 10-2009-0050627 Korean Patent Publication No. 10-2000-0063950

An embodiment of the present invention is to provide a resource security method that can prevent tampering of resources distributed to a user, a master server for executing the same, and a recording medium storing the same.

In addition, an embodiment of the present invention compares the first unique resource information for the original content and the second unique resource information for the distributed content, the resource security method that can check the tampering of the resource in real time, the master for executing the A server and a recording medium storing the same are provided.

In addition, an embodiment of the present invention to generate a second unique resource information for the distributed content in consideration of the load of the at least one content distribution server, the resource security method that can control the load of the content distribution server, executing A master server and a recording medium storing the same are provided.

According to an embodiment of the present invention, if the first unique resource information on the original content and the second unique resource information on the distributed content are not the same, a resource security method capable of preventing reuse of the modulated content by deleting the corresponding content. In addition, the present invention provides a master server which executes the same and a recording medium storing the same.

Among the embodiments, the resource security method is performed at a master server connected with at least one service server. The resource security method may include storing user distribution content, generating first unique resource information for the stored user distribution content, and storing the stored user distribution content at least a portion of the at least one service server And providing second unique resource information generated by the at least one content distribution server and checking for tampering of the provided user distribution content.

In an embodiment, the resource security method may further comprise redirecting the received access to the at least one content distribution server when an access by a user terminal is received.

In an embodiment, the generating of the first unique resource information may further include generating an n-dimensional binary image of the stored user distribution content. In another embodiment, the generating of the first unique resource information may further include generating a resource fingerprint image by searching for a location of each of at least one specific pattern in the n-dimensional binary image. In another embodiment, the generating of the first unique resource information may further include calculating a hash value for the n-dimensional binary image through a specific hash function.

In an embodiment, the generating of the first unique resource information may further include generating a time stamp for the stored user distribution content.

In an embodiment, the checking of the modulation of the provided user distribution content may further include requesting generation of the second unique resource information in consideration of the load of the at least one content distribution server. In another embodiment, the checking of the modulation of the provided user distribution content may further include periodically requesting the at least one content distribution server to generate the second unique resource information.

In one embodiment, each of the first and second unique resource information may include a timestamp for the corresponding user distribution content, a hash value through a specific function, and a resource fingerprint image.

In one embodiment, the step of checking for tampering of the provided user distribution content may further comprise comparing the time stamps for the first and second unique resource information and deleting the provided user distribution content if it is wrong. Can be. In another embodiment, checking for tampering of the provided user distribution content further comprises comparing hash values for the first and second unique resource information and deleting the provided user distribution content if it is wrong. can do. In another embodiment, the step of checking the tampering of the provided user distribution content comprises comparing a resource fingerprint image for the first and second unique resource information and deleting the provided user distribution content if it is wrong. It may further include.

In an embodiment, the checking of the tampering of the provided user distribution content may further include informing the administrator of the master server of an abnormality of the corresponding user distribution content when the provided user distribution content is deleted. .

Among the embodiments, the master server connected to the at least one service server includes a user distribution content storage unit for storing user distribution content, and a resource information generation unit for generating first unique resource information for the stored user distribution content. A user distribution content providing unit configured to provide the stored user distribution content to at least part of the at least one service server (hereinafter, at least one content distribution server) and a second generated by the at least one content distribution server. And a content tamper checker for receiving the unique resource information and checking for tampering of the provided user distribution content.

In an embodiment, the resource information generator may generate an n-dimensional binary image of the stored user distribution content. In another embodiment, the resource information generator may generate a resource fingerprint image by searching for each position of at least one specific pattern in the n-dimensional binary image. In another embodiment, the resource information generator may calculate a hash value for the n-dimensional binary image through a specific hash function.

In one embodiment, the resource information generation unit may generate a time stamp for the stored user distribution content.

In one embodiment, the content tamper checker may request generation of the second unique resource information in consideration of the load of the at least one content distribution server. In another embodiment, the content tamper checker may periodically request generation of the second unique resource information from the at least one content distribution server.

In one embodiment, each of the first and second unique resource information may include a timestamp for the corresponding user distribution content, a hash value through a specific function, and a resource fingerprint image.

In one embodiment, the master server compares at least one of timestamps, hash values, and resource fingerprint images for the first and second unique resource information and deletes the provided user distribution content if wrong. It may further include an update unit.

In one embodiment, the master server may further include a user distribution content abnormality notification unit for notifying the administrator of the master server of the user distribution content abnormality when the provided user distribution content is deleted.

Among the embodiments, the computer-readable recording medium may include a user distribution content storage unit for storing user distribution content, a resource information generation unit for generating first unique resource information for the stored user distribution content, and the stored user. The user distribution content providing unit for providing the content for distribution to at least a portion of the at least one service server (hereinafter, at least one content distribution server) and the second unique resource information generated by the at least one content distribution server. And a content modulation check unit for receiving and checking the modulation of the provided user distribution content.

A resource security method according to an embodiment of the present invention, a master server executing the same, and a recording medium storing the same may prevent tampering with resources distributed to a user.

In addition, the resource security method according to an embodiment of the present invention, the master server for executing the recording medium and the storage medium storing the same by comparing the first unique resource information for the original content and the second unique resource information for the distributed content resources The modulation can be checked in real time.

In addition, the resource security method according to an embodiment of the present invention, the master server for executing the same and the recording medium storing the same according to the load of at least one content distribution server for the distributed content By generating the second unique resource information, the load of the content distribution server can be controlled.

In addition, a method for securing a resource according to an embodiment of the present invention, a master server for executing the same, and a recording medium storing the same may include: first unique resource information for original content and distributed content; If the two unique resource information is not the same, it is possible to prevent reuse of the modulated content by deleting the corresponding content.

1 is a block diagram illustrating a resource security system according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a master server in FIG. 1.
3 is a block diagram illustrating a service server in FIG. 1.
4 is a flowchart illustrating an execution process of a master server of FIG. 1.
FIG. 5 is a diagram illustrating an execution process of FIG. 4.
6 is a flowchart illustrating an execution process of a service server of FIG. 1.

The description of the present invention is merely an example for structural or functional explanation, and the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the present invention should be understood to include equivalents capable of realizing technical ideas. Also, the purpose or effect of the present invention should not be construed as limiting the scope of the present invention, since it does not mean that a specific embodiment should include all or only such effect.

Meanwhile, the meaning of the terms described in the present application should be understood as follows.

The terms "first "," second ", and the like are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring to", should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

In each step, the identification code (e.g., a, b, c, etc.) is used for convenience of explanation, the identification code does not describe the order of each step, Unless otherwise stated, it may occur differently from the stated order. That is, each step may occur in the same order as described, may be performed substantially concurrently, or may be performed in reverse order.

The present invention can be embodied as computer-readable code on a computer-readable recording medium, and the computer-readable recording medium includes all kinds of recording devices for storing data that can be read by a computer system . Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and also implemented in the form of a carrier wave (for example, transmission over the Internet) . In addition, the computer-readable recording medium may be distributed over network-connected computer systems so that computer readable codes can be stored and executed in a distributed manner.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present application.

1 is a block diagram illustrating a resource security system according to an embodiment of the present invention.

Referring to FIG. 1, the resource security system 100 includes a master server 110 and at least one service server 120. Here, the master server 110 and at least one service server 120 may be connected through the Internet (not shown).

The master server 110 may correspond to a computing device capable of providing user distribution content to at least one service server 120. For example, the master server 110 may be a PC, a smartphone, or a personal digital assistant (PDA). Digital Assistant) and tablet PC. The master server 110 generates the first unique resource information for the content for user distribution, receives the second unique resource information generated by the at least one service server 120, and then the first and second unique resources. The information can be compared to check for tampering with the content for user distribution. The master server 110 is described in FIG. 2.

The at least one service server 120 may correspond to a computing device capable of receiving content for user distribution from the master server 110 and distributing user distribution content. For example, the master server 110 may be a PC. , Smartphones, PDAs, and tablet PCs. The at least one service server 120 may generate second unique resource information on the user distribution content received from the master server 110 and provide it to the master server 110. At least one service server 120 is described in FIG. 3.

FIG. 2 is a block diagram illustrating a master server in FIG. 1.

2, the master server 110 is a user distribution content management unit 210, resource information generation unit 220, user distribution content providing unit 230, content tamper check unit 240 and for user distribution And a content storage unit 250. In one embodiment, the master server 110 may further include a user distribution content update unit 260, a user distribution content abnormality notification unit 270, and a control unit 280.

The user distribution content manager 210 manages an operation for providing the user distribution content to the at least one service server 120. In one embodiment, the user distribution content management unit 210 may include an identifier of at least one service server 120 for the user distribution content, an identifier (eg, a file name) of the user distribution content, The hash value, time stamp, and resource fingerprint image may be stored in the content distribution unit 250 for user distribution.

In one embodiment, the user distribution content management unit 210 may set access authentication information (eg, a password) to the user distribution content. Such access authentication information may correspond to information that only the master server 110 and a specific service server (eg, 120a) can know. In one embodiment, the user distribution content management unit 210 may set access authentication information on the user distribution content using a public key encryption method or a secret key encryption method.

In one embodiment, the user distribution content management unit 210 may synchronize the resource information to the service server management unit 320 of at least one service server 120 in real time. In one embodiment, the user distribution content management unit 210 when the user distribution content in the user distribution content storage unit 250 is modified to the service server (eg, 120a) provided with the user distribution content. Modified user distribution content can be provided.

The resource information generation unit 220 generates first unique resource information on the user distribution content stored in the user distribution content storage unit 250. Here, the first unique resource information may include at least one of a timestamp for the corresponding user distribution content, a hash value through a specific function, and a resource fingerprint image.

In one embodiment, the resource information generation unit 220 may generate an n-dimensional binary image of the user distribution content in the user distribution content storage 250. In another embodiment, the resource information generator 220 may generate a resource fingerprint image by searching for each position of at least one specific pattern in the n-dimensional binary image. In another embodiment, the resource information generator 220 may calculate a hash value for the n-dimensional binary image through a specific hash function.

In one embodiment, the resource information generator 220 may generate a time stamp of the user distribution content in the user distribution content storage 250.

The user distribution content providing unit 230 transmits the user distribution content in the user distribution content storage unit 250 to at least a part of the at least one service server 120 (eg, at least one content distribution server). to provide. In one embodiment, the user distribution content providing unit 230 may redirect the access received to the at least one service server 120 when the access by the user terminal is received.

The content modulation checker 240 receives the second unique resource information generated by the at least one service server 120 to check the modulation of the content for user distribution. Here, the second unique resource information may include at least one of a timestamp for the corresponding user distribution content, a hash value through a specific function, and a resource fingerprint image.

In one embodiment, the content modulation checker 240 may request generation of the second unique resource information in consideration of the load of at least one service server 120. In another embodiment, the content modulation checker 240 may periodically request generation of the second unique resource information from the at least one content distribution server 120.

The user distribution content storage unit 250 is used to store user distribution content. In one embodiment, the user distribution content storage 250 may be implemented in volatile memory, nonvolatile memory, or a combination thereof. In an embodiment, the user distribution content storage unit 250 may include at least one identifier of at least one service server 120, an identifier (eg, a file name) of the user distribution content, and a hash value of the user distribution content. It can be used to map and store time stamps and resource fingerprint images.

The user distribution content update unit 260 may update the user distribution content in the user distribution content storage unit 250. In one embodiment, the user distribution content update unit 260 may update the user distribution contents when a modification (for example, an update) occurs by the user distribution content producer.

In one embodiment, the user distribution content updater 260 may compare the time stamps for the first and second unique resource information and delete the provided user distribution content if it is wrong. In another embodiment, the user distribution content updater 260 may compare the hash values for the first and second unique resource information and delete the provided user distribution content if it is wrong. In another embodiment, the user distribution content updater 260 may compare the resource fingerprint images for the first and second unique resource information and delete the provided user distribution content if it is wrong.

The user distribution content abnormality notification unit 270 may notify the administrator of an abnormality of the user distribution content when a specific user distribution content is deleted from the user distribution content storage unit 250. In one embodiment, the content distribution notification unit 270 for user distribution may be notified through a message service (eg, Short Message Service (SMS), Multimedia Message Service (MMS), E-mail, Twitter, etc.). .

The control unit 280, the master server 110, the user distribution content management unit 210, resource information generation unit 220, user distribution content providing unit 230, content tamper check unit 240 and user distribution content The storage unit 250 is included. In one embodiment, the master server 110 controls the user distribution content update unit 260 and the user distribution content abnormality notification unit 270.

3 is a block diagram illustrating a service server in FIG. 1.

Referring to FIG. 3, at least one service server 120 may include a content distribution unit 310 for distribution of users, a resource information generation unit 320, a content storage unit 330 for distribution of users, a resource information providing unit 340, and the like. A user distribution content providing unit 350 and the control unit 360.

The user distribution content receiver 310 receives user distribution content from the master server 110. In one embodiment, the user distribution content receiving unit 310 may receive whenever the user distribution content is modified. In another embodiment, the user distribution content receiving unit 310 may automatically receive user distribution content when connected to the master server 110.

The resource information generation unit 320 generates second unique resource information on the user distribution content received from the master server 110. Here, the second unique resource information may include at least one of a timestamp for the corresponding user distribution content, a hash value through a specific function, and a resource fingerprint image. In one embodiment, the resource information generation unit 320 may generate second unique resource information for the content for user distribution in a multithreaded manner.

In one embodiment, the resource information generator 320 may generate second unique resource information at predetermined time intervals. In another embodiment, the resource information generator 320 may generate second unique resource information when a request for generating second unique resource information is received from the master server 110. In another embodiment, the resource information generator 320 may generate second unique resource information in consideration of the load of the master server 110.

In one embodiment, the resource information generator 320 may generate second unique resource information when the content for user distribution is modulated. For example, modulation of user distribution content may correspond to addition, deletion, or change of specific content.

The user distribution content storage unit 330 may be used to store user distribution content provided from the master server 110. In one embodiment, the user distribution content storage unit 330 may be implemented as inactive memory, volatile memory, or a combination thereof.

The resource information provider 340 may provide the second unique resource information to the master server 110. In one embodiment, the resource information provider 340 may provide the second unique resource information at a predetermined time interval (for example, one month interval). In another embodiment, the resource information provider 340 may provide the second unique resource information whenever the second unique resource information is generated, that is, periodically.

The control unit 360 includes a content distribution unit 310 for distribution of users, a service server management unit 320, a resource information generation unit 320, a content storage unit 330 for distribution of users, a resource information providing unit 340, and distribution for users. The content providing unit 350 is controlled.

4 is a flowchart illustrating an execution process of the master server of FIG. 1, and FIG. 5 is a diagram illustrating an execution process of FIG. 4.

4 and 5, the resource information generation unit 220 generates first unique resource information for the user distribution content stored in the user distribution content storage unit 250 (step S410).

In one embodiment, the resource information generation unit 220 is a one-dimensional binary image 520, two-dimensional binary image 530 and three for the user distribution content 510 in the user distribution content storage unit 250 One of the dimensional binary images 540 may be generated. Binary images are images consisting of 0s and 1s. The binary image may be generated by arranging 0 or 1 arbitrarily or by arranging 0 or 1 according to a predetermined pattern.

In another exemplary embodiment, the resource information generator 220 may generate a resource fingerprint image by searching for positions of at least one specific pattern (eg, 521 and 522) in the one-dimensional binary image 520. In addition, the resource fingerprint image may be generated by searching each location of at least one specific pattern (eg, 531, 532, 533) in the 2D binary image 530, and at least one in the 3D binary image 540. A resource fingerprint image may be generated by searching for the location of each of the specific patterns (eg, 541 and 542). In another embodiment, the resource information generator 220 may calculate a hash value for the n-dimensional binary image through a specific hash function.

The user distribution content providing unit 230 transmits the user distribution content in the user distribution content storage unit 250 to at least a part of the at least one service server 120 (eg, at least one content distribution server). To provide (step S420).

 The content modulation checker 240 receives the second unique resource information generated by the at least one service server 120 and checks the modulation of the user distribution content (step S430).

The user distribution content update unit 260 may update the user distribution content in the user distribution content storage unit 250 if the user distribution content has been tampered with (step S440). ).

In one embodiment, the user distribution content updater 260 may compare the time stamps for the first and second unique resource information and delete the provided user distribution content if it is wrong. In another embodiment, the user distribution content updater 260 may compare the hash values for the first and second unique resource information and delete the provided user distribution content if it is wrong. In another embodiment, the user distribution content updater 260 may compare the resource fingerprint images for the first and second unique resource information and delete the provided user distribution content if it is wrong.

The user distribution content abnormality notification unit 270 may notify the administrator of the abnormality of the user distribution content when the specific user distribution content is deleted from the user distribution content storage unit 250 (step S460). In one embodiment, the content distribution notification unit 270 for user distribution may notify via a message service (eg, SMS, MMS, E-mail, Twitter, etc.).

6 is a flowchart illustrating an execution process of a service server of FIG. 1.

In FIG. 6, the service server manager 320 monitors user distribution content received from the master server 110 (step S610).

The resource information generation unit 320 generates second unique resource information for the user distribution content (step S620). In one embodiment, the resource information generation unit 320 may generate second unique resource information for the content for user distribution in a multithreaded manner.

In one embodiment, the resource information generator 320 may generate second unique resource information at predetermined time intervals. In another embodiment, the resource information generator 320 may generate second unique resource information when a request for generating second unique resource information is received from the master server 110. In another embodiment, the resource information generator 320 may generate second unique resource information in consideration of the load of the master server 110.

The resource information provider 340 may provide the second unique resource information to the master server 110 (step S630). In one embodiment, the resource information provider 340 may provide the second unique resource information at a predetermined time interval (for example, one month interval). In another embodiment, the resource information provider 340 may provide the second unique resource information whenever the second unique resource information is generated, that is, periodically.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

100: resource security system 110: master server
120: at least one service server 210: master server management unit
220, 350: resource information generator
230, 360: content provider for user distribution
240: content tamper check unit
250, 340: content storage for user distribution
260: content update unit for user distribution
270: Content anomaly notification unit for user distribution
280, 370: control unit 310: content receiving unit for user distribution
320: service server management unit 330: resource information generation unit
350: resource information provider

Claims (24)

In the resource security method performed in the master server connected to at least one service server, the resource security method
Storing content for user distribution;
Generating first unique resource information for the stored user distribution content;
Providing the stored user distribution content to at least a portion of the at least one service server (hereinafter, at least one content distribution server); And
Receiving second unique resource information generated by the at least one content distribution server and checking for tampering of the provided user distribution content,
The generating of the first unique resource information may include generating an n-dimensional binary image of the stored user distribution content and searching for a location of each of at least one specific pattern in the n-dimensional binary image to generate a resource fingerprint image. Resource security method, characterized in that.
Claim 2 has been abandoned due to the setting registration fee. The method of claim 1,
Redirecting the received access to the at least one content distribution server when an access by a user terminal is received.
delete delete Claim 5 has been abandoned due to the setting registration fee. The method of claim 1, wherein generating the first unique resource information
And calculating a hash value for the n-dimensional binary image through a particular hash function.
Claim 6 has been abandoned due to the setting registration fee. The method of claim 5, wherein the generating of the first unique resource information
And generating a timestamp for the stored user distribution content.
The method of claim 1, wherein the step of checking the modulation of the provided user distribution content is
And requesting generation of the second unique resource information in consideration of the load of the at least one content distribution server.
The method of claim 1, wherein the step of checking the modulation of the provided user distribution content is
Periodically requesting the at least one content distribution server to generate the second unique resource information.
Claim 9 has been abandoned due to the setting registration fee. The method of claim 1, wherein each of the first and second unique resource information is
And a timestamp of the content for the user distribution, a hash value through a specific function, and a resource fingerprint image.
Claim 10 has been abandoned due to the setting registration fee. 10. The method of claim 9, wherein checking for tampering with the provided user distribution content comprises:
And comparing the time stamps of the first and second unique resource information and deleting the provided user distribution contents if they are different.
Claim 11 was abandoned when the registration fee was paid. 11. The method of claim 10, wherein checking for tampering of the provided user distribution content comprises:
And comparing hash values for the first and second unique resource information and deleting the provided user distribution content if they are different.
Claim 12 is abandoned in setting registration fee. 12. The method of claim 11, wherein checking for tampering with the provided user distribution content comprises
And comparing the resource fingerprint images with respect to the first and second unique resource information and deleting the provided user distribution content if different.
The method of any one of claims 10 to 12, wherein the step of checking for tampering of the provided user distribution content comprises:
And notifying the administrator of the master server of an abnormality of the corresponding user distribution content when the provided user distribution content is deleted.
A master server connected to at least one service server, wherein the master server
A user distribution content storage unit storing content for user distribution;
A resource information generation unit generating first unique resource information on the stored user distribution content;
A user distribution content providing unit configured to provide the stored user distribution content to at least part of the at least one service server (hereinafter, at least one content distribution server); And
A content tamper checker configured to receive second unique resource information generated by the at least one content distribution server to check for tampering of the provided user distribution content;
The resource information generation unit generates an n-dimensional binary image of the stored user distribution content, and search for the location of each of at least one specific pattern in the n-dimensional binary image to generate a resource fingerprint image .
delete delete Claim 17 has been abandoned due to the setting registration fee. 15. The apparatus of claim 14, wherein the resource information generator
And calculating a hash value for the n-dimensional binary image through a specific hash function.
Claim 18 has been abandoned due to the setting registration fee. 18. The apparatus of claim 17, wherein the resource information generator
And generating a timestamp for the stored user distribution content.
Claim 19 is abandoned in setting registration fee. 15. The method of claim 14, wherein the content tamper checker
And requesting generation of the second unique resource information in consideration of the load of the at least one content distribution server.
Claim 20 has been abandoned due to the setting registration fee. 15. The method of claim 14, wherein the content tamper checker
And periodically requesting generation of the second unique resource information from the at least one content distribution server.
Claim 21 has been abandoned due to the setting registration fee. 15. The method of claim 14, wherein each of the first and second unique resource information
A master server comprising a timestamp for the user distribution content, a hash value through a specific function, and a resource fingerprint image.
Claim 22 is abandoned in setting registration fee. 15. The method of claim 14,
And a user distribution content update unit for comparing the at least one of a time stamp, a hash value, and a resource fingerprint image of the first and second unique resource information and deleting the provided user distribution content if different from each other. Master server.
Claim 23 has been abandoned due to the setting registration fee. The method of claim 22,
And a user distribution content abnormality notification unit for notifying an administrator of the master server of abnormality of the user distribution content when the provided user distribution content is deleted.
A computer-readable recording medium on which a program for implementing the method of claim 1 is recorded.

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