KR101712726B1 - Method and system for verifying integrity and validity of contents using hash code - Google Patents

Method and system for verifying integrity and validity of contents using hash code Download PDF

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Publication number
KR101712726B1
KR101712726B1 KR1020150058954A KR20150058954A KR101712726B1 KR 101712726 B1 KR101712726 B1 KR 101712726B1 KR 1020150058954 A KR1020150058954 A KR 1020150058954A KR 20150058954 A KR20150058954 A KR 20150058954A KR 101712726 B1 KR101712726 B1 KR 101712726B1
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South Korea
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content
data
hash code
distributed
server
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KR1020150058954A
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Korean (ko)
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KR20160127878A (en
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서문규
유찬형
반성아
김소연
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갤럭시아커뮤니케이션즈 주식회사
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Priority to KR1020150058954A priority Critical patent/KR101712726B1/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10Protecting distributed programs or content, e.g. vending or licensing of copyrighted material
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00Digital computers in general; Data processing equipment in general
    • G06F15/16Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10Protecting distributed programs or content, e.g. vending or licensing of copyrighted material
    • G06F21/12Protecting executable software
    • G06F21/121Restricting unauthorised execution of programs
    • G06F21/125Restricting unauthorised execution of programs by manipulating the program code, e.g. source code, compiled code, interpreted code, machine code
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/10Services

Abstract

A method for integrity and validation of content using a hash code includes the steps of generating, at a server, additional information related to the content based on data of the content in response to the content being uploaded; Obtaining a reference hash code corresponding to the content based on additional information related to the content; Storing the content in which the reference hash code is inserted and additional information related to the content in a database included in the server; Distributing the content into which the reference hash code is inserted and additional information related to the content in response to a content request received from a user terminal pre-installed with a content playback application connected to the server; Generating, at the user terminal, a comparison hash code corresponding to the distributed content based on the additional information related to the distributed content; Extracting the reference hash code embedded in the distributed content and comparing the extracted reference hash code with the comparison hash code; And verifying validity indicating integrity of the distributed content and whether the distributed content is distributed through the server based on the comparison result.

Description

[0001] METHOD AND SYSTEM FOR VERIFYING THE INTEGRITY AND VALIDITY OF CONTENT USING HASH CODE [0002]

The present invention relates to a system for verifying integrity and validity of a content and a method thereof, and more particularly, to a technique for verifying the integrity of a content and validity indicating whether or not the content is distributed through a specific server using a hash code .

BACKGROUND ART [0002] With the recent development of the Internet, contents including texts, images, and moving images have been produced in digital form and actively circulated.

However, since such contents have a digital form, there is a problem that the same copy or modified version as the original can be easily produced and distributed.

Accordingly, there is a demand for a technique for verifying the integrity of a content indicating whether or not the content has been copied or modified, and verifying the validity of a content indicating whether or not the content is distributed through a specific server.

In addition, for a service provider providing content to a user terminal, a technique for preventing illegal playback is also required because the content must be restricted to be reproduced only through a suitable content playback application in a user terminal.

A method and system for verifying integrity and validity of a content according to an embodiment provides a technique for verifying integrity and validity of a content by using a hash code obtained / generated corresponding to the content based on additional information related to the content .

In addition, the method and system for verifying the integrity and validity of contents according to an embodiment may change at least some data included in the header file of the content data into a hash code for preventing illegal reproduction, .

A method for verifying the integrity and validity of a content using a hash code according to an embodiment includes the steps of generating, at a server, additional information related to the content based on data of the content in response to the uploading of the content; Obtaining a reference hash code corresponding to the content based on additional information related to the content; Storing the content in which the reference hash code is inserted and additional information related to the content in a database included in the server; Distributing the content into which the reference hash code is inserted and additional information related to the content in response to a content request received from a user terminal pre-installed with a content playback application connected to the server; Generating, at the user terminal, a comparison hash code corresponding to the distributed content based on the additional information related to the distributed content; Extracting the reference hash code embedded in the distributed content and comparing the extracted reference hash code with the comparison hash code; And verifying validity indicating integrity of the distributed content and whether the distributed content is distributed through the server based on the comparison result.

Wherein the step of generating additional information related to the content further comprises the steps of: acquiring the ID of the data of the content, the file size of the data of the content, the file format of the data of the content, Wherein the content data includes at least one of a date of modification of data of the content, an upload date of the data of the content, an expiration date of the data of the content, a creator information of the content data, . ≪ / RTI >

Wherein obtaining the reference hash code corresponding to the content includes obtaining a reference hash code corresponding to the content based on the data of the content and the additional information associated with the content, The step of generating the comparison hash code may include generating a comparison hash code corresponding to the distributed content based on the data of the distributed content and the additional information related to the distributed content.

The integrity and validity checking method of the content using the hash code may further include reproducing the distributed content when the integrity and validity of the distributed content are verified and the integrity and validity of the distributed content is guaranteed have.

The step of playing back the distributed content may be a step of playing back the distributed content in response to payment of a fee for using the distributed content.

Wherein the step of generating additional information related to the content includes: changing at least some data included in a header file of the data of the content to a hash code for preventing illegal playback; And storing the at least some data changed to the hash code for illegal reproduction prevention in the database by matching with the content.

Wherein the step of verifying the integrity of the distributed content and whether or not the distributed content is distributed through the server includes verifying the integrity and validity of the distributed content and the integrity and validity of the distributed content Receiving the at least some data from the server; Changing a hash code for preventing illegal reproduction included in a header file of data of the distributed content to at least a part of the received data; And playing back the distributed content - the content whose hash code for preventing illegal playback has been changed to at least some of the received data.

The step of receiving the at least some data may be the step of receiving the at least some data from the server in response to a payment for using the distributed content is settled.

The step of distributing the content in which the reference hash code is inserted to the user terminal and the additional information related to the content may be performed in the user terminal from the content in which the reference hash code is inserted from another user terminal differentiated from the user terminal, And receiving additional information related to the content.

Wherein the step of verifying the integrity of the distributed content and whether or not the distributed content is distributed through the server comprises the steps of notifying each verification result of the integrity and validity of the distributed content by notification As shown in FIG.

Wherein the step of storing the content in which the reference hash code is inserted and the additional information related to the content in a database included in the server comprises receiving at least some of the reference hash codes or at least some of the contents, Wherein distributing the content in which the reference hash code is inserted to the user terminal and the additional information associated with the content is performed in a block chain that is not modifiable from the database, Extracting at least a part of the hash codes or at least a part of the contents into which the reference hash codes are inserted.

A system for verifying integrity and validity of a content using a hash code according to an embodiment includes a server; And a user terminal in which a content playback application connected to the server is installed in advance, the server generating additional information related to the content based on data of the content in response to the upload of the content, Acquiring a reference hash code corresponding to the content, storing the content in which the reference hash code is inserted and additional information related to the content in a database included in the server, Distributes the content in which the reference hash code is inserted and the additional information related to the content to the user terminal in response to the additional information, Generates a comparison hash code, Extracts the reference hash code embedded in the distributed content, compares the extracted reference hash code with the comparison hash code, and determines, based on the comparison result, whether the distributed content is distributed through the server and the integrity of the distributed content Validate the representation.

Wherein the server stores, based on the content data, an ID of the content, a file size of the content data, a file format of the content data, a creation date of the content data, a modification date of the content data, An additional information related to the content including at least one of an upload date of the data of the content, an expiration date of the data of the content, a creator information of the data of the content, or a description of the data of the content.

The user terminal can reproduce the distributed content when the integrity and validity of the distributed content are ensured and the integrity and validity of the distributed content is guaranteed.

The server changes at least some data included in the header file of the data of the content to a hash code for preventing illegal reproduction at any time point before or after generating the additional information related to the content, The at least some data changed to the hash code for preventing reproduction may be matched with the content and stored in the database.

Wherein the user terminal receives the at least some data from the server when the integrity and validity of the distributed content is guaranteed and the integrity and validity of the distributed content is guaranteed, The hash code for preventing the illegal reproduction is changed to the received at least some data, and the hashed code for preventing the illegal reproduction is changed to the received at least some data to reproduce the restored content .

A method and system for verifying the integrity and validity of a content according to an embodiment provides a technique for verifying integrity and validity of the content by using a hash code obtained / generated corresponding to the content based on the additional information related to the content .

In addition, the method and system for verifying the integrity and validity of contents according to an embodiment may change at least some data included in the header file of the content data into a hash code for preventing illegal reproduction, Can be provided.

1 is a block diagram illustrating a system for verifying integrity and validity of contents according to an exemplary embodiment of the present invention.
2 is a diagram for explaining a process of generating additional information related to a content according to an embodiment.
3 is a diagram for explaining a process of acquiring a reference hash code corresponding to a content according to an embodiment and a process of generating a comparison hash code corresponding to the distributed content.
4 is a flowchart illustrating a process of changing at least some data included in a header file of content data according to an exemplary embodiment into a hash code for preventing illegal playback and a hash code for preventing illegal playback And changing the code to at least a part of the received data.
5 is a flowchart illustrating a method for verifying integrity and validity of contents according to an exemplary embodiment of the present invention.
6 is a block diagram illustrating a content integrity and validation system in accordance with one embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. In addition, the same reference numerals shown in the drawings denote the same members.

Also, terminologies used herein are terms used to properly represent preferred embodiments of the present invention, which may vary depending on the user, intent of the operator, or custom in the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.

1 is a block diagram illustrating a system for verifying integrity and validity of contents according to an exemplary embodiment of the present invention.

Referring to FIG. 1, a content integrity and validity verification system according to an exemplary embodiment of the present invention includes a server 110 and a user terminal 120 having a content playback application connected to the server 110 in advance. Here, the server 110 may store the content to be uploaded from the content upload terminals differentiated from the user terminal 120, and may provide the content to the user terminal 120.

Specifically, the server 110 generates additional information related to the content based on the data of the content, acquires a reference hash code corresponding to the content based on the additional information related to the content, inserts the reference hash code into the content, And distributes the inserted content and additional information related to the content to the user terminal 120.

In response, the user terminal 120 generates a comparison hash code corresponding to the distributed content based on the additional information related to the distributed content, extracts the reference hash code inserted in the distributed content, To verify the integrity and validity of the distributed content. At this time, instead of receiving the content having the reference hash code inserted therein and the additional information related to the content from the server 110, the user terminal 120 may insert a reference hash code from another user terminal distinguished from the user terminal 120 And may receive additional information related to the content and content.

Here, the content in which the reference hash code is inserted and the additional information related to the content can be stored in the database included in the server 110. [ In particular, at least some of the reference hash codes or at least some of the content into which the reference hash codes are inserted may be stored in a block chain of the database that is not modifiable, thereby improving security. Likewise, additional information associated with the content may also be stored in a block chain of the database that is not modifiable.

The server 110 may also be configured to provide at least some of the reference hash codes stored in the non-modifiable block chain of the database or the reference hash codes < RTI ID = 0.0 > At least a part of the inserted content can be extracted. If additional information related to the content is also stored in an unmodifiable block chain of the database, the server 110 may extract additional information related to the content from the non-modifiable block chain of the database.

Accordingly, the integrity and validation system of the content according to an embodiment including the server 110 and the user terminal 120 can use the hash codes (reference hash codes and comparison hash codes) acquired / generated corresponding to the contents The integrity and validity of the contents can be verified.

At this time, the additional information related to the content may include the ID of the data of the content, the file size of the data of the content, the file format of the content data, the creation date of the content data, An upload date of the data of the content, an expiration date of the data of the content, a creator information of the content data, or a description of the content data. A detailed description thereof will be described with reference to Fig.

Here, the reference hash code obtained at the server 110 can be obtained not only based on the additional information related to the content, but also based on the data of the content. For example, the reference hash code may be obtained based on both the data of the content and the additional information associated with the content. In this case, the comparison hash code generated at the user terminal 120 is not only generated based on the additional information related to the distributed content, but also generated based on both the data of the distributed content and the additional information related to the distributed content .

In this way, if the integrity and validity of the distributed content are guaranteed and the integrity and validity of the distributed content are guaranteed as a result of the distributed content verified by the user terminal 120, the content distributed from the user terminal 120 can be reproduced. At this time, the user terminal 120 can reproduce the distributed content in response to payment of the fee for using the distributed content. Here, the fee for using the distributed content can be settled in the user terminal 120 by a payment method such as bit coin, light coin, dark coin, name coin, pottery coin, ripple coin, or credit card.

In addition, the user terminal 120 may notify the user of the user terminal 120 of the result of verifying the integrity and the validity of the distributed content. For example, as a result of integrity verification of the content, if the content has been copied or modified, the user terminal 120 may display an alarm indicating that the content has been copied or modified. For example, if the content is not distributed through the server 110 and is not valid as a result of validation of the content, the user terminal 120 notifies the content that the content is not distributed through the server 110 An alarm can be displayed.

In addition, the server 110 may change at least some data included in the header file of the content data to a hash code for preventing illegal playback, and then distribute at least some data to the user terminal 120 separately from the content, Illegal playback on the terminal 120 can be prevented. In this case, if the integrity and validity of the distributed content is assured as a result of the integrity and validity of the distributed content, the user terminal 120 receives at least some data from the server 110, It is possible to change the hash code for illegal reproduction prevention contained in the header file of the data of the content to at least one piece of received data. Accordingly, the user terminal 120 can reproduce the restored content-distributed content- by changing the hash code for illegal playback prevention to at least some received data.

Here, at least some data changed to the hash code for illegal reproduction prevention is stored in an unmodifiable block chain of the database included in the server 110, thereby improving security. In this case, the server 110 may extract at least some data stored in the non-modifiable block chain of the database before transmitting at least some data to the integrity and validity-enabled user terminal 120 of the distributed content.

At this time, the user terminal 120 can receive at least some data from the server 110 in response to the payment of the fee for using the distributed content is settled. That is, when the fee for using the distributed content is not paid at the user terminal 120, since the user terminal 120 can not reproduce the restored content because the user terminal 120 can not receive at least some data from the server 110, Illegal regeneration in which settlement in the terminal 120 is not performed can be prevented.

Here, the process in which the server 110 generates the additional information related to the content based on the data of the content may be performed before or after changing at least some data included in the header file of the content data to the hash code for preventing illegal reproduction As shown in FIG. A detailed description thereof will be given below.

2 is a diagram for explaining a process of generating additional information related to a content according to an embodiment.

Referring to FIG. 2, the server 210 included in the contents integrity and validation system according to an exemplary embodiment of the present invention includes content-related information 230 ). At this time, the content may be uploaded from the content upload terminals and stored in the database included in the server 210 in advance.

For example, the server 210 may determine the ID of the content data 220, the file size of the content data 220, the file format of the content data 220, The upload date of the content data 220, the expiration date of the content data 220, the creator information of the content data 220 or the content data of the content data 220, (230) associated with the content to include at least one of the descriptions of the content (220).

Here, the additional information 230 related to the content can be distinguished from the additional information related to the content generated by the other server, since the data 220 of the content is generated by the server 210-specific processing method.

Accordingly, the reference hash code and the comparison hash code acquired / generated based on the additional information 230 related to the generated content can be used in the process of verifying the integrity and validity of the content.

At this time, before generating the additional information 230 related to the content from the content data 220, the server 210 may prevent illegal playback of at least some data included in the header file of the content data 220 Can be changed to a hash code. In this case, the additional information 230 related to the content can be generated based on the data 220 of the content in which at least some data included in the header file is changed to a hash code for preventing illegal reproduction.

On the other hand, after generating the additional information 230 related to the content from the content data 220, the server 210 may prevent illegal playback of at least some data contained in the header file of the content data 220 You can also change it to a hash code for A detailed description thereof will be described with reference to Fig.

3 is a diagram for explaining a process of acquiring a reference hash code corresponding to a content according to an embodiment and a process of generating a comparison hash code corresponding to the distributed content.

Referring to FIG. 3, the server 310 included in the content integrity and validation system according to an exemplary embodiment, based on the additional information 320 related to the content generated as described above with reference to FIG. 2, The reference hash code 330 is obtained.

At this time, the server 310 can acquire the reference hash code 330 based on the additional information 320 related to the content, as well as the content data 340 - representing content information of the content.

Here, the server 310 is included in the header file for the data 340 of the content before generating the additional information 320 related to the content from the content data 340, as described above with reference to FIG. At least some data can be changed to a hash code for illegal reproduction prevention. Thus, the server 310 may determine that at least some of the data contained in the header file for the data 220 of the content (e.g., data) before obtaining the reference hash code 330 corresponding to the content based on the additional information 320 associated with the content Can be changed to a hash code for illegal reproduction prevention. In this case, the reference hash code 330 may be generated based on the data 340 of the content in which at least some data included in the header file has been changed to a hash code for preventing illegal reproduction.

On the other hand, the server 310 generates additional information 320 related to the content from the content data 340 and obtains a reference hash code 330 corresponding to the content based on the additional information 320 related to the content It is possible to change at least some data included in the header file of the content data 340 to a hash code for preventing illegal reproduction. In this case, the reference hash code 330 may be generated based on the data 340 of the content at least some of the data included in the header file has not been changed to the hash code for illegal reproduction prevention.

In addition, the user terminal 350 included in the content integrity and validation system according to an exemplary embodiment distributes additional information 320 related to the content and the content from the server 310, A comparison hash code 360 corresponding to the distributed content can be generated based on the comparison hash code 320 shown in Fig. At this time, instead of distributing additional information 320 related to the content and the content from the server 310, the user terminal 350 may receive additional information 320 from the user terminal 350, 320 may be delivered. In this case, the user terminal 350 and other user terminals can be directly connected without going through the server 310. [

Similarly, the user terminal 350 may generate the comparison hash code 360 based on the distributed content data 340 as well as the additional information 320 associated with the distributed content.

4 is a flowchart illustrating a process of changing at least some data included in a header file of content data according to an exemplary embodiment into a hash code for preventing illegal playback and a hash code for preventing illegal playback And changing the code to at least a part of the received data.

4, a server 410 included in a content integrity and validation system according to an exemplary embodiment of the present invention includes at least some data 422 included in a header file 421 for content data 420, At least a part of the data 422 changed to the hash code 423 for illegal reproduction prevention is matched with the content and is stored in the database included in the server 410. [ At this time, the server 410 may store at least some data 422 changed to the hash code 423 for preventing illegal reproduction, in an unmodifiable block chain of the database included in the server 410.

Such a process may be selectively performed at any time point before or after generating additional information related to the content based on the data 420 of the content described above with reference to Fig.

If at least some data 422 included in the header file 421 of the content data 420 in the server 410 is changed to the hash code 423 for preventing illegal reproduction, Receives the at least some data 422 from the server 410 when the integrity and validity of the distributed content is guaranteed as a result of the verification after verifying the integrity and validity of the distributed content described above, A hash code 423 for preventing illegal reproduction contained in the header file 421 for the content data 420 is changed to at least a part of the received data 422 so that the hash code The content 423 is changed to the received at least some data 422 to reproduce the restored content.

At this time, before the server 410 transmits at least some data 422 changed to the hash code 423 for preventing illegal reproduction to the user terminal 430 whose integrity and validity of the distributed content is guaranteed, It is possible to extract at least some data 422 stored in the non-modifiable block chain.

5 is a flowchart illustrating a method for verifying integrity and validity of contents according to an exemplary embodiment of the present invention.

Referring to FIG. 5, a server included in a content integrity and validation system according to an embodiment generates 510 additional information related to content based on data of the content in response to the content being uploaded.

At this time, based on the data of the content, the server obtains the ID of the content, the file size of the data of the content, the file format of the data of the content, the date of creation of the data of the content, the date of change of the data of the content, Date of expiration of the data of the content, creator information of the data of the content, or description of the data of the content.

Here, the server changes at least some data included in the header file of the content data to a hash code for preventing illegal reproduction, and at least some data changed to a hash code for preventing illegal reproduction is included in the server In the database. In addition, the server can store at least some data changed into a hash code for illegal reproduction prevention in an unmodifiable block chain of the database included in the server.

Specifically, the server changes at least some data included in the header file of the content data to a hash code for preventing illegal playback, either before or after generating the additional information related to the content, At least some data changed to a hash code for preventing reproduction may be matched with the content and stored in a database included in the server.

In this case, in a step 570 of verifying integrity and validity of the distributed content, which will be described later, when the integrity and validity of the distributed content is guaranteed and the integrity and validity of the distributed content is guaranteed, A hash code for preventing illegal playback contained in the header file of the data of the distributed content is changed to at least some received data, and the hash code for preventing illegal reproduction of the distributed content is received It is possible to reproduce at least some of the data and the restored contents. At this time, the user terminal can receive at least some data from the server in response to payment of the fee for using the distributed content. At this time, the server extracts at least some data stored in the non-modifiable block chain of the database before transmitting at least some data changed to the hash code for illegal reproduction prevention to the user terminal whose integrity and validity of the distributed content is guaranteed .

The server then obtains a reference hash code corresponding to the content based on the additional information associated with the content (520).

At this time, the server can acquire a reference hash code corresponding to the content based on the data of the content and the additional information related to the content. In this case, in step 550 of generating a comparison hash code described below, the user terminal may generate a comparison hash code corresponding to the distributed content based on the data of the distributed content and the additional information associated with the distributed content .

The server then stores (530) the inserted content with the reference hash code and additional information associated with the content in a database included in the server.

At this time, the server can store at least a part of the reference hash code or at least a part of the content into which the reference hash code is inserted in a block chain in which the database is not modifiable.

Then, in response to the content request received from the user terminal in which the content playback application connected to the server is pre-installed, the server distributes 540 the additional information related to the content and the content in which the reference hash code is inserted to the user terminal.

At this time, when at least a part of the reference hash codes or at least a part of the contents into which the reference hash codes are inserted is stored in a block chain in which the database can not be tampered with, the server transmits, to the user terminal whose integrity and validity of the distributed contents is guaranteed, At least some of the reference hash codes or at least some of the content into which the reference hash codes have been inserted from a block chain that is not modifiable in the database.

The user terminal included in the content integrity and validation system according to an exemplary embodiment generates a comparison hash code corresponding to the distributed content based on the additional information related to the distributed content (550).

Then, the user terminal extracts a reference hash code embedded in the distributed content and compares it with the comparison hash code (560).

Thereafter, the user terminal verifies the integrity of the distributed content based on the comparison result and validity indicating whether the distributed content is distributed through the server (570).

At this time, the user terminal may notify each of the verification results of the integrity and validity of the distributed content.

Also, although not shown in the figure, the user terminal can reproduce the distributed content when the integrity and validity of the distributed content are guaranteed and the integrity and validity of the distributed content is guaranteed. At this time, the user terminal can reproduce the distributed content in response to payment of the fee for using the distributed content.

6 is a block diagram illustrating a content integrity and validation system in accordance with one embodiment.

Referring to FIG. 6, the contents integrity and validation system according to an exemplary embodiment of the present invention includes a server 610 and a user terminal 620 in which a content playback application connected to the server 610 is installed in advance.

In response to the content being uploaded, the server 610 generates additional information related to the content based on the data of the content, acquires a reference hash code corresponding to the content based on the additional information related to the content, In response to a content request received from the user terminal 620, content and content having the reference hash code inserted into the user terminal 620, And distributes additional information related to this.

Here, the server 610 may store at least a portion of the reference hash code or at least a portion of the content into which the reference hash code is inserted in a block chain in which the database is unmodifiable, in which case the server 610 may determine the integrity At least a portion of the reference hash code or at least a portion of the content into which the reference hash code is inserted from a block chain that is not capable of being tampered with in the database before transmitting at least some data to the validated user terminal 620 .

At this time, the server 610 stores the ID of the content data, the file size of the content data, the file format of the content data, the creation date of the content data, the modification date of the content data, Additional information related to the content including at least one of an upload date of the data, an expiration date of the data of the content, a creator information of the content data, or a description of the content data.

Here, the server 610 changes at least some data included in the header file of the content data to a hash code for preventing illegal playback, either before or after generating the additional information related to the content, At least some data changed to the hash code for illegal reproduction prevention may be matched with the content and stored in the database included in the server 610. [ At this time, the server 610 may store at least some data changed into a hash code for preventing illegal reproduction, in an unmodifiable block chain of the database included in the server 610. [

In this case, if the integrity and validity of the distributed content is guaranteed and the integrity and validity of the distributed content is guaranteed as a result of the integrity and validity verification of the distributed content, ), Changes the hash code for illegal playback prevention included in the header file of the distributed content data to at least some received data, and then transmits the hash code for preventing the illegal reproduction of the distributed content Can be changed to at least some of the received data to reproduce the restored content. At this time, before the server 610 transmits at least some data changed to the hash code for illegal reproduction prevention to the user terminal whose integrity and validity of the distributed content is guaranteed, at least some data stored in the non- Can be extracted. In addition, the user terminal 620 may receive at least some data from the server 610 in response to the payment of the fee for using the distributed content.

In addition, the server 610 may obtain a reference hash code corresponding to the content based on the data of the content and the additional information associated with the content. In this case, in the process of generating a comparison hash code described later, the user terminal 620 can generate a comparison hash code corresponding to the distributed content based on the data of the distributed content and the additional information related to the distributed content .

The user terminal 620 generates a comparison hash code corresponding to the distributed content based on the additional information related to the distributed content, extracts a reference hash code embedded in the distributed content, compares the extracted reference hash code with the comparison hash code, And verifies the integrity of the distributed content and the validity indicating whether the distributed content is distributed through the server 610. [

At this time, the user terminal 620 may notify each verification result of the integrity and validity of the distributed content.

In addition, if the integrity and validity of the distributed content is guaranteed and the integrity and validity of the distributed content are guaranteed, the user terminal 620 can reproduce the distributed content. At this time, the user terminal 620 can reproduce the distributed content in response to payment of the fee for using the distributed content.

The apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the apparatus and components described in the embodiments may be implemented within a computer system, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA) A programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For ease of understanding, the processing apparatus may be described as being used singly, but those skilled in the art will recognize that the processing apparatus may have a plurality of processing elements and / As shown in FIG. For example, the processing unit may comprise a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as a parallel processor.

The software may include a computer program, code, instructions, or a combination of one or more of the foregoing, and may be configured to configure the processing device to operate as desired or to process it collectively or collectively Device can be commanded. The software and / or data may be in the form of any type of machine, component, physical device, virtual equipment, computer storage media, or device , Or may be permanently or temporarily embodied in a transmitted signal wave. The software may be distributed over a networked computer system and stored or executed in a distributed manner. The software and data may be stored on one or more computer readable recording media.

The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (17)

  1. In the server, in response to the content being uploaded, generating additional information related to the content based on the data of the content;
    Obtaining a reference hash code corresponding to the content based on additional information related to the content;
    Storing the content in which the reference hash code is inserted and additional information related to the content in a database included in the server;
    Distributing the content into which the reference hash code is inserted and additional information related to the content in response to a content request received from a user terminal pre-installed with a content playback application connected to the server;
    Generating, at the user terminal, a comparison hash code corresponding to the distributed content based on the additional information related to the distributed content;
    Extracting the reference hash code embedded in the distributed content and comparing the extracted reference hash code with the comparison hash code; And
    Verifying validity indicating integrity of the distributed content and whether or not the distributed content is distributed through the server based on the comparison result
    Lt; / RTI >
    The step of generating additional information related to the content
    Changing at least some data included in a header file of the content data to a hash code for preventing illegal playback; And
    Storing the at least some data changed to the hash code for illegal reproduction prevention into the database by matching with the content
    A method of verifying the integrity and validity of a content using a hash code comprising:
  2. The method according to claim 1,
    The step of generating additional information related to the content
    A file size of the data of the content, a file format of the data of the content, a creation date of the data of the content, a modification date of the data of the content, data of the content Generating additional information related to the content, the upload date of the content, the expiration date of the data of the content, the creator information of the data of the content, or the description of the data of the content Integrity and validation methods.
  3. The method according to claim 1,
    The step of obtaining a reference hash code corresponding to the content
    Obtaining a reference hash code corresponding to the content based on the data of the content and the additional information associated with the content
    Lt; / RTI >
    The step of generating a comparison hash code corresponding to the distributed content
    Generating a comparison hash code corresponding to the distributed content based on the data of the distributed content and the additional information related to the distributed content
    A method of verifying the integrity and validity of a content using a hash code comprising:
  4. The method according to claim 1,
    If the integrity and validity of the distributed content is verified and the integrity and validity of the distributed content is ensured,
    The method of claim 1, further comprising:
  5. 5. The method of claim 4,
    The step of playing back the distributed content
    And reproducing the distributed content in response to payment of the fee for using the distributed content.
  6. delete
  7. The method according to claim 1,
    The step of verifying validity indicating integrity of the distributed content and whether the distributed content is distributed through the server
    Receiving the at least some data from the server if the integrity and validity of the distributed content is guaranteed and the integrity and validity of the distributed content is ensured;
    Changing a hash code for preventing illegal reproduction included in a header file of data of the distributed content to at least a part of the received data; And
    The distributed content - reproducing the hashed code for preventing the illegal reproduction from being changed into the received at least some data and restoring the content -
    The method of claim 1, further comprising:
  8. 8. The method of claim 7,
    The step of receiving the at least some data
    And receiving the at least some data from the server in response to payment of the fee using the distributed content.
  9. The method according to claim 1,
    The step of distributing the content into which the reference hash code is inserted and the additional information associated with the content to the user terminal
    Receiving, at the user terminal, the content in which the reference hash code is inserted and additional information related to the content from another user terminal differentiated from the user terminal
    The method of claim 1, further comprising:
  10. The method according to claim 1,
    The step of verifying validity indicating integrity of the distributed content and whether the distributed content is distributed through the server
    Notifying each validation result of the integrity and validity of the distributed content with a notification
    The method of claim 1, further comprising:
  11. In the server, in response to the content being uploaded, generating additional information related to the content based on the data of the content;
    Obtaining a reference hash code corresponding to the content based on additional information related to the content;
    Storing the content in which the reference hash code is inserted and additional information related to the content in a database included in the server;
    Distributing the content into which the reference hash code is inserted and additional information related to the content in response to a content request received from a user terminal pre-installed with a content playback application connected to the server;
    Generating, at the user terminal, a comparison hash code corresponding to the distributed content based on the additional information related to the distributed content;
    Extracting the reference hash code embedded in the distributed content and comparing the extracted reference hash code with the comparison hash code; And
    Verifying validity indicating integrity of the distributed content and whether or not the distributed content is distributed through the server based on the comparison result
    Lt; / RTI >
    Wherein the step of storing the content in which the reference hash code is inserted and the additional information related to the content in a database included in the server
    Storing at least a part of the content in which at least a part of the reference hash code or the reference hash code is inserted in a block chain in which the database is not modifiable
    Lt; / RTI >
    The step of distributing the content into which the reference hash code is inserted and the additional information associated with the content to the user terminal
    Extracting at least a portion of the content into which at least a portion of the reference hash code or the reference hash code is inserted from a block chain that is not modifiable in the database
    The method of claim 1, further comprising:
  12. A computer readable nonvolatile recording medium on which a computer program for performing the method of any one of claims 1 to 5 or 11 to 11 is recorded.
  13. server; And
    And a content playback application connected to the server,
    / RTI >
    The server
    Generating additional information related to the content based on the data of the content in response to the content being uploaded, obtaining a reference hash code corresponding to the content based on the additional information related to the content, Storing the content and additional information related to the content in a database included in the server, and in response to a content request received from the user terminal, associating the content and the content with the reference hash code inserted into the user terminal Distribute additional relevant information,
    The user terminal
    A comparison hash code corresponding to the distributed content is generated based on the additional information related to the distributed content, the reference hash code embedded in the distributed content is extracted and compared with the comparison hash code, Verifying the integrity of the distributed content and whether or not the distributed content is distributed through the server,
    The server
    Changing at least some data included in the header file of the data of the content to a hash code for preventing illegal playback before or after generating additional information related to the content, And storing the at least some data changed to the hash code for the content in the database by matching with the content.
  14. 14. The method of claim 13,
    The server
    A file size of the data of the content, a file format of the data of the content, a creation date of the data of the content, a modification date of the data of the content, data of the content The creation date of the content data, the date of the upload of the content, the date of expiration of the data of the content, the creator information of the data of the content, or the description of the data of the content, the integrity of the content using the hash code And validation system.
  15. 14. The method of claim 13,
    The user terminal
    Wherein the distributed content is reproduced when the integrity and validity of the distributed content are guaranteed and the integrity and validity of the distributed content are guaranteed.
  16. delete
  17. 14. The method of claim 13,
    The user terminal
    And if the integrity and validity of the distributed content are guaranteed and the integrity and validity of the distributed content is guaranteed, the server receives the at least some data from the server, A hash code for preventing playback is changed to at least a part of the received data, and the hash code for preventing the illegal playback is changed to the received at least some data, A system for verifying integrity and validity of content using.
KR1020150058954A 2015-04-27 2015-04-27 Method and system for verifying integrity and validity of contents using hash code KR101712726B1 (en)

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