KR20200046451A - Method for contents distribution based peer to peer, apparatus and system for executing the method - Google Patents

Abstract

Disclosed is a P2P-based content distribution method and a computing device and system for performing the same. The method according to the disclosed embodiment includes the steps of transmitting a member subscription request to a content distribution provider server, issuing a certificate according to a member subscription request from a certificate management server, and requesting content purchase for a predetermined content from the content distribution server Transmitting, receiving a P2P unique key information list for content holding terminals having content from a content distribution provider server, accessing the content holding terminal based on the P2P unique key information list, and accessing the computing device's certificate. Transmitting to the content holding terminal, receiving a certificate of the content holding terminal from the content holding terminal, requesting a certificate validity check for the certificate of the content holding terminal to the certificate management server, and when the certificate of the content holding terminal is valid, About Compu Transmitting a list of data blocks held by the device to the content holding terminal, receiving data blocks not held by the computing device for content from the content holding terminal, and checking whether the received data blocks are in error It includes the steps.

Description

P2P-based content distribution method and computing device and system for performing the same {METHOD FOR CONTENTS DISTRIBUTION BASED PEER TO PEER, APPARATUS AND SYSTEM FOR EXECUTING THE METHOD}

Embodiments of the present invention relate to content distribution technology.

Recently, with the development of digital technology, cases of distributing and consuming content (music, movies, documents, etc.) online through a computing device are rapidly increasing. However, since the author policy and price are determined by a specific portal site when distributing content, the interest of the author of the content is often not properly protected. In addition, by using a single DRM technology for the content, it is necessary to use only dedicated software when consuming the content, and thus there is a problem of low usability.

Korean Registered Patent Publication No. 10-1888866 (2018.08.16)

The disclosed embodiment is to provide a method for distributing a content of a new technique and an apparatus and system for performing the same.

The system according to the disclosed embodiment is a peer-to-peer (P2P) -based content distribution service system that transmits a content registration request including content-related information for a given content and applies DRM (applicable to the content). Digital Rights Management) a first user terminal transmitting a DRM service inquiry request for a service and receiving a DRM service list in response to the DRM service inquiry request; And receiving the content registration request, generating content identification information unique to the content, transmitting the generated content identification information to the first user terminal, and receiving the DRM service inquiry request to apply to the content And a content distribution management server that transmits a list of DRM services to the first user terminal, wherein the content distribution management server is a DRM service for a DRM service selected by a user from the DRM service list from the first user terminal. Upon receiving the request, the P2P unique key information capable of downloading the DRM module providing the DRM service is transmitted to the first user terminal, and the first user terminal receives the DRM module based on the P2P unique key information. Download in P2P method, encrypt the content using the DRM module, , Upload the encrypted content and the content identification information of the content, and transmit the content upload information including the content identification information and the encryption key information to the content distribution management server.

The content distribution service system includes: one or more content distribution service provider servers that provide web pages to view and purchase content registered in the content distribution management server; And transmitting a content purchase request for purchase of predetermined content to the content distribution provider server, receiving P2P unique key information for downloading the content from the content distribution provider server, and based on the P2P unique key information. A second user terminal for downloading the content in a P2P method may be further included.

The content distribution server stores content sales history information in a blockchain network, the first user terminal stores content authoring history information in the blockchain network, and the second user terminal stores content purchase history information. It can be stored in the blockchain network.

The content distribution service system includes: a DRM management server for DRM management of contents registered in the content distribution management server; And providing a DRM service for content registered in the content distribution management server, transmitting a list of DRM services provided by the user to the DRM management server, and transmitting DRM license information for the DRM service provided by the DRM management server. It may further include one or more DRM service provider server.

The second user terminal transmits a content license request for the downloaded content to the content distribution provider server, and the content distribution provider server includes the downloaded content from one of the DRM management server and the DRM service provider server. DRM license information corresponding to may be received and transmitted to the second user terminal.

The content distribution provider server first requests the DRM license information to the DRM provider server that provides the DRM module of the content downloaded by the second user terminal, and the DRM provider for a preset time from the time of the first request. If there is no response from the server, the DRM license information may be requested to the DRM management server a second time.

The DRM management server and the DRM operator server may distribute a DRM module for providing a DRM service in a P2P manner and store DRM module deployment history information in a blockchain network.

A computing device according to an disclosed embodiment includes one or more processors; Memory; And one or more programs, wherein the one or more programs are stored in the memory, and configured to be executed by the one or more processors, wherein the one or more programs include content-related information for a predetermined content from a user terminal. Instructions for receiving a content registration request; Instructions for generating content identification information unique to the content and transmitting the generated content identification information to the user terminal; A command for receiving a DRM service inquiry request for the content from the user terminal and transmitting a list of DRM services applicable to the content to the user terminal; A command for receiving a DRM service request from the user terminal, and transmitting P2P unique key information capable of downloading a DRM module providing the corresponding DRM service to the user terminal; And a command for receiving content upload information including content identification information and encryption key information of the content from the user terminal.

The method according to the disclosed embodiment is based on a Peer-to-Peer (P2P) performed in a computing device having one or more processors and memory storing one or more programs executed by the one or more processors. A content distribution method, comprising: sending a request for membership registration to a content distribution server; Receiving a certificate according to the member subscription request from a certificate management server; Transmitting a content purchase request for a predetermined content to the content distribution provider server; Receiving a P2P unique key information list for content holding terminals having the content from the content distribution provider server; Connecting to the content holding terminal based on the P2P unique key information list, and transmitting a certificate of the computing device to the content holding terminal; Receiving a certificate of the content holding terminal from the content holding terminal; Requesting a certificate validity check for the certificate of the content holding terminal to the certificate management server; If the certificate of the content holding terminal is valid, transmitting a list of data blocks held by the computing device for the content to the content holding terminal; Receiving a block of data not held by the computing device for the content from the content holding terminal; And checking whether there is an error in the received data block.

The content distribution method may further include transmitting a certificate invalid report to the content distribution provider server when the certificate of the content holding terminal is invalid.

After the step of sending the certificate invalid report, the method may further include requesting additional P2P unique key information to download the content by replacing the content holding terminal with the content distribution provider server.

In the content distribution method, when there is an error in the received data block, sending a data block error report to the content distribution provider server to transmit a certificate revocation request to the certificate management server for the content holding terminal. It may further include.

The content distribution method includes: checking whether a disconnection occurs while receiving a data block of the content from the content holding terminal; If a connection disconnection occurs more than a preset number of times while receiving the data block of the content, a disconnection notification is sent to the content distribution provider server to transmit a certificate revocation request to the certificate management server for the content holding terminal. It may further include a step.

Computing device according to another embodiment disclosed, the storage unit for storing a computer program; And a transmission unit for transmitting the computer program to a distribution server, wherein the computer program comprises: a user terminal sending a membership registration request to a content distribution provider server; Receiving a certificate according to the member subscription request from a certificate management server; Transmitting a content purchase request for a predetermined content to the content distribution provider server; Receiving a P2P unique key information list for content holding terminals having the content from the content distribution provider server; Connecting to the content holding terminal based on the P2P unique key information list, and transmitting a certificate of the user terminal to the content holding terminal; Receiving a certificate of the content holding terminal from the content holding terminal; Requesting a certificate validity check for the certificate of the content holding terminal to the certificate management server; If the certificate of the content holding terminal is valid, transmitting a list of data blocks held by the user terminal for the content to the content holding terminal; Receiving a block of data not held by the user terminal for the content from the content holding terminal; And checking whether there is an error in the received data block.

Computing device according to another embodiment disclosed, the storage unit for storing a computer program; And a transmission unit that transmits the computer program to a user terminal, wherein the computer program comprises: a user terminal sending a request for membership registration to a content distribution provider server; Receiving a certificate according to the member subscription request from a certificate management server; Transmitting a content purchase request for a predetermined content to the content distribution provider server; Receiving a P2P unique key information list for content holding terminals having the content from the content distribution provider server; Connecting to the content holding terminal based on the P2P unique key information list, and transmitting a certificate of the user terminal to the content holding terminal; Receiving a certificate of the content holding terminal from the content holding terminal; Requesting a certificate validity check for the certificate of the content holding terminal to the certificate management server; If the certificate of the content holding terminal is valid, transmitting a list of data blocks held by the user terminal for the content to the content holding terminal; Receiving a block of data not held by the user terminal for the content from the content holding terminal; And checking whether there is an error in the received data block.

According to the disclosed embodiment, the author of the content transmits content-related information including the content sale price to the content distribution management server to register the content, so that the author of the content can determine the selling price for the content by himself, As a result, it is possible to secure the interests of the content authors and induce active creative activities.

In addition, by allowing various content distribution providers and DRM providers to participate in content distribution, the content consumer can select a variety of content distribution providers and DRM providers to obtain services that are advantageous to them. In addition, by distributing the DRM module in a P2P manner, the content consumer can browse the content even if the DRM module does not have the DRM module.

In addition, when downloading content in a P2P method, the first user terminal and the second user terminal exchange the mutual certificate to check the validity of the certificate and then proceed with the download, thereby detecting illegally participating terminals in the corresponding system It can be excluded from the system.

In addition, when downloading content in the P2P method, if there is an error in the downloaded data block or if the other party's terminal is disconnected for more than a preset number of times, by filing a report to the content distribution server, the certificate of the terminal is revoked. , P2P programs, etc. can block maliciously tampered or forged peers and bad peers from acting on the system.

1 is a view showing a content distribution service system according to an embodiment of the present invention
2 is a flowchart illustrating a process in which an author registers content in a content distribution service system according to an embodiment of the present invention
3 is a flowchart illustrating a process in which a consumer downloads and executes content in a content distribution service system according to an embodiment of the present invention
4 is a flowchart illustrating a process of distributing content in a P2P manner in a content distribution service system according to an embodiment of the present invention
5 is a block diagram illustrating and illustrating a computing environment including a computing device suitable for use in example embodiments.
6 is a block diagram showing the configuration of a computer program transmission apparatus according to an embodiment of the present invention

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to aid in a comprehensive understanding of the methods, devices and / or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, when it is determined that a detailed description of known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice. Therefore, the definition should be made based on the contents throughout this specification. The terminology used in the detailed description is only for describing embodiments of the present invention and should not be limiting. Unless expressly used otherwise, a singular form includes a plural form. In this description, expressions such as “comprising” or “equipment” are intended to indicate certain characteristics, numbers, steps, actions, elements, parts or combinations thereof, and one or more other than described. It should not be interpreted to exclude the presence or possibility of other characteristics, numbers, steps, actions, elements, or parts or combinations thereof.

In the following description, the terms “transmission”, “communication”, “transmission”, “reception” and the like of the signal or information are not only those in which a signal or information is transmitted directly from one component to another. This includes passing through other components. In particular, "transmitting" or "transmitting" a signal or information to a component indicates the final destination of the signal or information, not a direct destination. The same is true for the "reception" of a signal or information. Also, in this specification, when two or more pieces of data or information are “related” means that acquiring one piece of data (or information) can acquire at least part of the other piece of data (or information) based on it.

Further, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may also be referred to as a first component.

1 is a view showing a content distribution service system according to an embodiment of the present invention.

Referring to FIG. 1, the content distribution service system 100 includes a content distribution management server 102, a certificate management server 104, a content distribution operator server 106, a digital rights management (DRM) management server 108, and a DRM It may include an operator server 110, a first user terminal 112, and a second user terminal 114.

Here, each component may be connected to enable communication with each other through the communication network 150. In some embodiments, communication network 150 may be the Internet, one or more local area networks, wide area networks, cellular networks, mobile networks, other types of networks, or such networks. It can include a combination of.

The content distribution management server 102 is a server computing device for operating and managing content distribution services. The content distribution management server 102 may perform a member registration process for users (ie, authors) who want to register content. Here, the content may include video content, audio content, document content, and the like.

The content distribution management server 102 may receive a member subscription request from the first user terminal 112 (that is, the author's terminal) to register the user (ie, the author) as a member. The request for membership may include the user's ID and password. The content distribution management server 102 may request a certificate issuance to the certificate management server 104 in response to a request for membership registration of the first user terminal 112.

The content distribution management server 102 may register a content by receiving a content registration request from the first user terminal 112 (ie, the author's terminal). The content registration request may include one or more of content to be registered and content-related information (for example, the name of the content, author information, content creation time, content sales price, etc.). When content is registered, the content distribution management server 102 may generate content identification information (that is, content ID) unique to the content and transmit the generated content identification information to the first user terminal 112. .

In addition, the content distribution management server 102 may receive a request to query the DRM service from the first user terminal 112. The DRM service inquiry request may include information on the type (type) of the content to which the DRM service is to be applied (for example, information on which type of content is video content, audio content, or document content). You can.

The content distribution management server 102 may transmit a list of DRM services applicable to the content to the first user terminal 112 based on the type information of the content included in the DRM service inquiry request. For example, the content distribution management server 102 may generate a list by extracting operators who can provide a DRM service for the corresponding content among DRM operators registered in the content distribution management server 102.

When the content distribution management server 102 receives a DRM service request for a predetermined content from the first user terminal 112, the content distribution management server 102 transmits P2P unique key information for downloading the corresponding DRM module to the first user terminal 112. can do. In the disclosed embodiment, by distributing the DRM module itself in a P2P manner, the first user terminal 112 does not need to have a DRM module for each content. The content distribution management server 102 may share a list of DRM modules corresponding to the DRM service request for each content with the content distribution provider server 106.

The content distribution management server 102 may receive content upload information (including content identification information and encryption key information of the content) from the first user terminal 112. The content distribution management server 102 may share the content upload information with the content distribution provider server 106.

The certificate management server 104 may serve to issue a certificate for member management of users who use the content distribution service. In an exemplary embodiment, the certificate management server 104 may issue certificates to user terminals 112 and 114 that are registered with the content distribution management server 102 and the content distribution provider server 106, respectively.

The certificate management server 104 may check whether the corresponding certificate is valid according to the certificate validation request. In an exemplary embodiment, the certificate management server 104 may check whether the corresponding certificate is valid according to a request for validating a certificate of the user terminal 112 or 114 and feedback the result. In addition, the certificate management server 104 may revoke the corresponding certificate according to the certificate revocation request from the content distribution provider server 106.

The content distribution provider server 106 is a server computing device of a business operator (content distribution provider) pursuing profit by distributing content. In the content distribution service system 100, a plurality of content distribution provider servers 106 may exist. Content distribution providers may be in a competitive relationship with each other through differentiated services (eg, content distribution speed and content price).

The content distribution provider server 106 may perform a member registration process for users (ie, consumers) who want to purchase content. The content distribution provider server 106 may receive a member subscription request from the second user terminal 114 (ie, the consumer terminal) to register the user. The request for membership may include the user's ID and password. The content distribution provider server 106 may request a certificate issuance to the certificate management server 104 in response to a request for membership registration of the second user terminal 114.

The content distribution provider server 106 may provide a web page so that consumers can view and purchase content registered in the content distribution management server 102. When the content distribution provider server 106 receives a purchase request for a predetermined content from the second user terminal 114, the content distribution provider server 106 may transmit P2P unique key information capable of downloading the content to the second user terminal 114. . Here, the P2P unique key information may be a kind of address information for the second user terminal 114 to access the P2P server (not shown) and download the corresponding content in a P2P manner. In an exemplary embodiment, the content distribution provider server 106 may distribute the content to the second user terminal 114 through the P2P method, rather than directly transmitting the content to the second user terminal 114.

When the content is sold, the content distribution server server 106 may store the content sales history information through the blockchain network. The content sales history information may include content identification information of the content, buyer information of the content, and sales price information of the content.

The content distribution provider server 106 may receive a content license request from the second user terminal 114. The content distribution provider server 106 may transmit DRM license information capable of decrypting the content (ie, encrypted content) distributed to the second user terminal 114 to the second user terminal 114. Here, the DRM license information may include policy related to the DRM module and encryption key information of the corresponding content.

The content distribution operator server 106 may request and receive DRM license information from the DRM management server 108 or the DRM operator server 110. In an exemplary embodiment, the content distribution operator server 106 may first request DRM license information to the DRM operator server 110 that provided the DRM module downloaded by the second user terminal 114. If there is no response from the DRM operator server 110 for a predetermined time from the time of the first request, the content distribution operator server 106 may request the DRM license information to the DRM management server 108 second.

The content distribution provider server 106 may transmit a certificate revocation request for the corresponding terminal to the certificate management server 104 when a data block error report or a connection disconnection report is received from the second user terminal 114.

The DRM management server 108 may be a server computing device for managing encryption and decryption of content registered in the content distribution management server 102. The DRM management server 108 may transmit a list of DRM services provided by itself to the content distribution management server 102. In an exemplary embodiment, DRM management server 108 may provide basic DRM services. The DRM management server 108 may store DRM license information for the DRM service provided by the DRM operator server 110, respectively. Accordingly, even if a predetermined DRM service provider no longer performs a DRM service business, it is possible to maintain the corresponding DRM service through the DRM management server 108.

The DRM service provider server 110 is a server computing device of a service provider (DRM service provider) pursuing profit through providing a DRM service. In the content distribution service system 100, a plurality of DRM operator servers 110 may exist. DRM operators may compete with each other through differentiated services. The DRM operator server 110 may provide a DRM service that the DRM management server 108 cannot provide. The DRM service provider server 110 may transmit a list of DRM services provided by the service provider to the content distribution management server 102. The DRM operator server 110 may transmit DRM license information for the DRM service provided by the DRM management server 108.

The DRM management server 108 and the DRM operator server 110 may transmit (distribute) the DRM module to the user terminals 112 and 114 in a P2P manner. The DRM management server 108 and the DRM operator server 110 may store DRM module distribution history information in a blockchain network. The DRM module distribution history information may include, for example, DRM module identification information, DRM module distributor information, DRM module distribution timing information, and DRM module distribution information.

The first user terminal 112 may be a terminal used by the author of the content. However, the present invention is not limited thereto, and the first user terminal 112 may be a terminal of a consumer who purchases content. In other words, the creator of the content can be the consumer of the content.

The first user terminal 112 may transmit a member subscription request to the content distribution management server 102. The first user terminal 112 may receive a certificate from the certificate management server 104 according to the membership subscription.

The first user terminal 112 may transmit a content registration request to the content distribution management server 102. That is, when the author authors the content, the content registration request may be transmitted through the first user terminal 112 to register the content to the content distribution management server 102. The first user terminal 112 may transmit a content registration request including content-related information (eg, the name of the content, author information, content creation time, content sales price, etc.) to the content distribution management server 102. . In the disclosed embodiment, the author of the content transmits the content-related information to the content distribution management server 102 to register the content, so that the author of the content can determine the selling price of the content.

The first user terminal 112 may store content authoring history information in a blockchain network. The content authoring history information may include the name of the content, the author information, and the time of the content creation.

The first user terminal 112 may receive content identification information for the registered content from the content distribution management server 102. The first user terminal 112 may transmit a DRM service inquiry request that can be provided for the corresponding content to the content distribution management server 102. The first user terminal 112 may receive a list of DRM services applicable to the corresponding content from the content distribution management server 102. The first user terminal 112 requests the DRM service to be applied by the content to the content distribution management server 102, and receives the P2P unique key information for the corresponding DRM module from the content distribution management server 102 in a P2P manner. The DRM module can be downloaded through. To this end, a P2P agent may be installed in the first user terminal 112. The P2P agent may include a DRM module or a program for downloading or distributing content in a P2P manner.

The first user terminal 112 may encrypt the corresponding content based on the DRM module, and upload the content identification information and the encrypted content of the corresponding content to the content distribution management server 102 or a storage server (not shown). The first user terminal 112 may transmit content upload information including content identification information of the content and encryption key information of the content to the content distribution management server 102.

The second user terminal 114 may be a terminal used for consumption of content. However, the present invention is not limited thereto, and the second user terminal 114 may be a terminal of a user (ie, an author) who authors content.

The second user terminal 114 may transmit a member subscription request to the content distribution provider server 106. The second user terminal 114 may receive a certificate from the certificate management server 104 according to the membership subscription. The second user terminal 114 may transmit a content purchase request to the content distribution provider server 106. The second user terminal 114 may receive P2P unique key information for the content from the content distribution provider server 106 and download the content in a P2P manner. To this end, a P2P agent may be installed on the second user terminal 114.

The second user terminal 114 may transmit a content license request for the corresponding content to the content distribution provider server 106 and receive DRM license information for the content from the content distribution provider server 106. The second user terminal 114 may decrypt the encrypted content using the DRM license information and then execute it. The second user terminal 114 may download and download the DRM module applicable to the corresponding content in a P2P manner.

The second user terminal 114 may store content purchase history information in a blockchain network. The content purchase history information may include identification information of the corresponding content, information of a content distributor who purchased the content, a purchase price of the content, a purchase time of the content, and distributor information of the content.

Here, an application for performing functions provided by the content distribution service system 100 may be installed in the user terminals 112 and 114. The application may be stored on the computer-readable storage medium of the user terminals 112 and 114. The application includes a predetermined set of instructions executable by the processors of the user terminals 112,114. The command may cause the processor of the user terminals 112 and 114 to perform an operation according to an exemplary embodiment. The computer-readable storage medium of the user terminals 112 and 114 includes components of an operating system for executing a set of instructions such as the application on the user terminals 112 and 114. For example, such an operating system may include various operating systems such as Windows from Microsoft, Mac from Apple, iOS from Apple, or Android from Google. have.

According to the disclosed embodiment, the author of the content transmits content-related information including the content selling price to the content distribution management server 102 to register the content, so that the author of the content can determine the selling price for the content on its own Thereby, it is possible to secure the interests of content creators and induce active creative activities.

In addition, by allowing various content distribution providers and DRM providers to participate in content distribution, the content consumer can select a variety of content distribution providers and DRM providers to obtain services that are advantageous to them. In addition, by distributing the DRM module in a P2P manner, the content consumer can browse the corresponding content even if the DRM module does not have the corresponding DRM module.

2 is a flowchart illustrating a process in which an author registers content in a content distribution service system according to an embodiment of the present invention. In the illustrated flow chart, the method is described by dividing the method into a plurality of steps, but at least some of the steps are performed by reversing the order, combined with other steps, omitted, or divided into detailed steps, or not shown. One or more steps can be performed in addition.

Referring to FIG. 2, the first user terminal 112 transmits a member subscription request to the content distribution management server 102 (S 101). Then, the content distribution management server 102 may register the user as a member according to the member subscription request.

Next, the first user terminal 112 receives a certificate according to membership registration from the certificate management server 104 (S 103). At this time, the request for certificate issuance may be requested by the content distribution management server 102 to the certificate management server 104 when the first user terminal 112 requests membership registration, and the first user terminal 112 may request the certificate management server 104. ).

Next, the first user terminal 112 transmits a content registration request to the content distribution management server 102 (S 105). That is, when the author authors a predetermined content, the content-related information (for example, the name of the content, the author's information, when the content is produced, the content sales price, etc.) for the corresponding content is generated and includes the generated content-related information The content registration request can be transmitted to the content distribution management server 102 through the first user terminal 112.

Next, the first user terminal 112 receives content identification information for the corresponding content from the content distribution management server 102 (S 107).

Next, the first user terminal 112 transmits a DRM service inquiry request to the content distribution management server 102 (S109), and the DRM service applicable to the corresponding content from the content distribution management server 102 The list is received (S 111).

Here, the DRM service inquiry request may include information on the type of content that has requested the content registration. The first user terminal 112 may select any one DRM service according to the author's input from the DRM service list. That is, the author can select a DRM service to be applied to the corresponding content from the DRM service list.

Next, the first user terminal 112 downloads the DRM module corresponding to the selected DRM service in a P2P manner (S 113). In an exemplary embodiment, the first user terminal 112 may request the selected DRM service to the content distribution management server 102, and the content distribution management server 102 may use P2P unique key information to download the corresponding DRM module. Can be transmitted to the first user terminal 112. Then, the first user terminal 112 may connect to a P2P server (not shown) and download the corresponding DRM module in a P2P manner.

Next, the first user terminal 112 encrypts the corresponding content based on the downloaded DRM module (S 115), and uploads the encrypted content to the storage server 116 (S 117). The first user terminal 112 may transmit the content identification information and the encrypted content of the corresponding content to the storage server 116 for upload. Here, it is described that the encrypted content is transmitted to the storage server 116 for upload, but is not limited thereto, and the encrypted content may be transmitted to the content distribution management server 102 for upload.

Next, the first user terminal 112 transmits the content upload information to the content distribution management server 102 (S119). Here, the content upload information may include content identification information of the content and encryption key information of the content. In this case, the content distribution management server 102 can check what content is uploaded through content identification information included in the content upload information. The content distribution management server 102 may share the content upload information (ie, content identification information and encryption key information) with the content distribution provider server 106 and the DRM management server 108.

3 is a flowchart illustrating a process in which a consumer downloads and executes content in a content distribution service system according to an embodiment of the present invention. In the illustrated flow chart, the method is described by dividing the method into a plurality of steps, but at least some of the steps are performed by reversing the order, combined with other steps, omitted, or divided into detailed steps, or not shown. One or more steps can be performed in addition.

Referring to FIG. 3, the second user terminal 114 transmits a member subscription request to the content distribution provider server 106 (S 201). Then, the content distribution provider server 106 may register the user as a member according to the member subscription request.

Next, the second user terminal 114 receives a certificate according to membership registration from the certificate management server 104 (S 203). At this time, the request for issuing a certificate may be requested by the content distribution provider server 106 to the certificate management server 104 when the second user terminal 114 requests membership registration, and the second user terminal 114 may request the certificate management server 104. ).

Next, the second user terminal 114 transmits a purchase request (content purchase request) of a predetermined content to the content distribution provider server 106 according to the input of the consumer (S 205). That is, the consumer can search and search the content to be purchased from the web page provided by the content distribution provider server 106, and transmit a content purchase request to the content distribution provider server 106 for the content to be purchased. .

Next, the second user terminal 114 receives P2P unique key information for the corresponding content from the content distribution provider server 106 and downloads the corresponding content in a P2P manner (S 207). As such, in the exemplary embodiment, the content distribution provider server 106 may distribute the content to the second user terminal 114 through the P2P method, rather than directly transmitting the content to the second user terminal 114. .

That is, the content distribution provider server 106 downloads the content stored in the terminal or storage server 116 of other consumers and authors who are registered to the content distribution provider server 106 through the P2P method, and the second user terminal 114 downloads the content. I can make it available. However, the present invention is not limited thereto, and the content distribution provider server 106 may directly transmit the content to the second user terminal 114.

Next, the second user terminal 114 transmits a content license request for the content to the content distribution provider server 106 (S209). The content license request may include content identification information of the corresponding content. That is, since the content downloaded by the second user terminal 114 is encrypted content, a content license request may be transmitted to the content distribution provider server 106 to decrypt it.

Next, the second user terminal 114 receives the DRM license information from the content distribution provider server 106 (S 211), and decrypts the encrypted content using the received DRM license information (S 213). Here, the DRM license information may include policy related to the DRM module and encryption key information of the corresponding content.

4 is a flowchart illustrating a process of distributing content in a P2P manner in a content distribution service system according to an embodiment of the present invention. In the illustrated flow chart, the method is described by dividing the method into a plurality of steps, but at least some of the steps are performed by reversing the order, combined with other steps, omitted, or divided into detailed steps, or not shown. One or more steps can be performed in addition.

Here, the first user terminal 112 and the second user terminal 114 are terminals participating in a peer-to-peer network, and the first user terminal 112 is a user's terminal for downloading content. It is a terminal, and the second user terminal 114 may be a user's terminal or a server computing device (eg, a storage server 116, etc.) having the content.

Referring to FIG. 4, the first user terminal 112 transmits a content purchase request to the content distribution provider server 106 (S301). The user of the first user terminal 112 can search and search the content to be purchased from the web page provided by the content distribution provider server 106, and request a content purchase request for the content to be purchased. 106).

Next, the content distribution provider server 106 transmits a list of P2P unique key information of terminals having the corresponding content to the first user terminal 112 (S303).

Next, the first user terminal 112 accesses the second user terminal 114 having the corresponding content based on the list of P2P unique key information (S305). Here, the second user terminal 114 is one of a plurality of terminals having the corresponding content, and for convenience of description, a case in which the corresponding content is downloaded from the second user terminal 114 through a P2P method will be described. Shall be The first user terminal 112 may transmit the certificate of the first user terminal 112 to the second user terminal 114 while accessing the second user terminal 114.

Next, the second user terminal 114 transmits a request for validating the certificate of the first user terminal 112 to the certificate management server 104 (S307). That is, the second user terminal 114 may query the certificate management server 104 whether the certificate of the first user terminal 112 has expired or forcibly revoked.

As a result of checking in step S307, when the certificate of the first user terminal 112 is valid, the second user terminal 114 transmits the certificate of the second user terminal 114 to the first user terminal 112 (S) 309).

Then, the first user terminal 112 transmits a request for validating the certificate of the second user terminal 114 to the certificate management server 104 (S 311). In this way, each peer can exchange each other's certificate and check whether it is valid.

As a result of checking in step S 311, when the certificate of the second user terminal 114 is not valid, the first user terminal 112 ends the connection with the second user terminal 114, and the second user terminal 114 A certificate invalid report that the certificate of is not valid is transmitted to the content distribution provider server 106 (S313).

Similarly, as a result of checking in step S307, when the certificate of the first user terminal 112 is invalid, the second user terminal 114 ends the connection with the first user terminal 112, and the first user terminal ( The certificate invalid report that the certificate of 112) is not valid may be transmitted to the content distribution provider server 106.

Here, the first user terminal 112 may additionally request P2P unique key information capable of replacing the second user terminal 114 with the content distribution provider server 106. That is, since the connection with the second user terminal 114 is terminated, the P2P unique key information of the terminal having the corresponding content may be additionally requested in order to replace the second user terminal 114 and download the corresponding content. .

As a result of the check in step S 311, when the certificate of the second user terminal 114 is valid, the first user terminal 112 secondly lists the data blocks held by the first user terminal 112 for the corresponding content. It transmits to the user terminal 114 (S315).

Next, the first user terminal 112 receives data blocks that the first user terminal 112 does not have for the corresponding content from the second user terminal 114 (S317). That is, the second user terminal 114 is owned among data blocks that the first user terminal 112 does not have based on the list of data blocks retained for the corresponding content of the first user terminal 112 Data blocks may be transmitted to the first user terminal 112.

Next, the first user terminal 112 checks the data blocks of the downloaded content (S 319). In an exemplary embodiment, the first user terminal 112 may check whether there are errors in data blocks received from the second user terminal 114.

As a result of the check in step S319, when there is an error in the data block received from the second user terminal 114, the first user terminal 112 transmits a data block error report to the content distribution provider server 106 (S) 321). In this case, even if the certificate of the second user terminal 114 is valid, a P2P program or the like of the second user terminal 114 may be maliciously tampered with or falsified, thereby reporting a data block error.

Next, the content distribution provider server 106 transmits a certificate revocation request to the certificate management server 104 for the second user terminal 114 having a data block error report (S323). Then, the certificate management server 104 may forcibly revoke the certificate of the second user terminal 114.

On the other hand, the first user terminal 112, if the connection disconnection occurs more than a predetermined number of times while receiving a data block of the corresponding content from the second user terminal 114, to report the disconnection to the content distribution provider server 106 Can transmit. The content distribution provider server 106 may transmit the certificate revocation request to the certificate management server 104 for the second user terminal 114, which is the target of reporting the loss of connection, so that the certificate of the second user terminal 114 is revoked.

According to the disclosed embodiment, when downloading content in a P2P method, the first user terminal 112 and the second user terminal 114 exchange the mutual certificate to check the validity of the certificate, and then proceed with the download to illegally Terminals participating in the system can be detected and excluded from the system.

In addition, when downloading content in the P2P method, if there is an error in the downloaded data block or if the other party's terminal is disconnected for more than a preset number of times, a notification is received by the content distribution provider server 106 and the certificate of the corresponding terminal is received. By discarding, P2P programs, etc., can block maliciously tampered or forged peers and rogue peers from acting on the system.

5 is a block diagram illustrating and illustrating a computing environment 10 including a computing device suitable for use in example embodiments. In the illustrated embodiment, each component may have different functions and capabilities in addition to those described below, and may include additional components in addition to those described below.

The illustrated computing environment 10 includes a computing device 12. In one embodiment, the computing device 12 may be a server computing device for content distribution (eg, a content distribution management server 102 and a content distribution provider server 106). Further, the computing device 12 may be a server computing device (eg, a certificate management server 104) for certificate management. Further, the computing device 12 may be a server computing device (eg, a DRM management server 108 and a DRM operator server 110) for providing DRM services. Further, the computing device 12 may be a terminal of a user who registers or consumes content (eg, the first user terminal 112 and the second user terminal 114).

The computing device 12 includes at least one processor 14, a computer readable storage medium 16 and a communication bus 18. The processor 14 can cause the computing device 12 to operate in accordance with the exemplary embodiment mentioned above. For example, processor 14 may execute one or more programs stored on computer readable storage medium 16. The one or more programs can include one or more computer-executable instructions, which, when executed by the processor 14, configure the computing device 12 to perform operations according to an exemplary embodiment. Can be.

Computer readable storage medium 16 is configured to store computer executable instructions or program code, program data and / or other suitable types of information. The program 20 stored on the computer readable storage medium 16 includes a set of instructions executable by the processor 14. In one embodiment, the computer-readable storage medium 16 is a memory (volatile memory such as random access memory, non-volatile memory, or a suitable combination thereof), one or more magnetic disk storage devices, optical disk storage devices, flash Memory devices, other types of storage media that can be accessed by the computing device 12 and store desired information, or any suitable combination thereof.

The communication bus 18 interconnects various other components of the computing device 12, including a processor 14 and a computer-readable storage medium 16.

Computing device 12 may also include one or more I / O interfaces 22 and one or more network communication interfaces 26 that provide an interface for one or more I / O devices 24. The input / output interface 22 and the network communication interface 26 are connected to the communication bus 18. The input / output device 24 may be connected to other components of the computing device 12 through the input / output interface 22. Exemplary input / output devices 24 include pointing devices (such as a mouse or trackpad), keyboards, touch input devices (such as touch pads or touch screens), voice or sound input devices, various types of sensor devices, and / or imaging devices. Input devices, and / or output devices such as display devices, printers, speakers, and / or network cards. The exemplary input / output device 24 is a component constituting the computing device 12 and may be included in the computing device 12 or connected to the computing device 12 as a separate device distinct from the computing device 12. It might be.

6 is a block diagram showing the configuration of a computer program transmission device according to an embodiment of the present invention.

In an exemplary embodiment, the computer program transmission device 30 is for transmitting a computer program to a user terminal, and may be implemented in one configuration included in a server for distributing computer programs. In addition, the computer program transmission device 30 may be a computing device for transmitting (ie uploading) a computer program to a server (distribution server) that distributes the computer program. The computer program may include a set of instructions for performing the embodiments disclosed in the present invention.

Referring to FIG. 6, the computer program transmission device 30 includes a computer program storage unit 32 and a computer program transmission unit 34. The computer program storage unit 32 stores the computer program. The computer program transmission unit 34 transmits the computer program to a user terminal or a distribution server.

Although the exemplary embodiments of the present invention have been described in detail above, those skilled in the art to which the present invention pertains will understand that various modifications are possible within the limits without departing from the scope of the present invention. . Therefore, the scope of rights of the present invention should not be limited to the described embodiments, and should be determined not only by the claims to be described later, but also by the claims and equivalents.

100: content distribution service system
102: content distribution management server
104: certificate management server
106: content distribution provider server
108: DRM management server
110: DRM operator server
112: first user terminal
114: second user terminal
116: storage server

Claims (15)

As a peer-to-peer (P2P) -based content distribution service system,
A content registration request including content-related information for a given content is transmitted, a DRM service inquiry request for a digital rights management (DRM) service applicable to the content is transmitted, and a DRM service list corresponding to the DRM service inquiry request A first user terminal for receiving; And
The content registration request is received, content identification information unique to the content is generated, the generated content identification information is transmitted to the first user terminal, and the DRM service inquiry request is received and applied to the content And a content distribution management server that transmits a list of DRM services to the first user terminal,
The content distribution management server,
The P2P unique key information for receiving the DRM service request for the DRM service selected by the user from the first user terminal from the DRM service list and downloading the DRM module providing the DRM service to the first user terminal Send,
The first user terminal downloads the DRM module in a P2P manner based on the P2P unique key information, encrypts the content using the DRM module, uploads encrypted content and content identification information of the content, A content distribution service system that transmits content upload information including content identification information and encryption key information of the content to the content distribution management server.
The method according to claim 1,
The content distribution service system,
At least one content distribution service provider server that provides a web page to search and purchase content registered in the content distribution management server; And
Send a content purchase request for the purchase of predetermined content to the content distribution server, receive P2P unique key information for downloading the content from the content distribution server, and receive the content based on the P2P unique key information. Further comprising a second user terminal to download the P2P method, content distribution service system.
The method according to claim 2,
The content distribution provider server stores content sales history information in a blockchain network,
The first user terminal stores content history information in the blockchain network,
The second user terminal stores content purchase history information in the blockchain network, a content distribution service system.
The method according to claim 3,
The content distribution service system,
A DRM management server for DRM management of contents registered in the content distribution management server; And
DRM service is provided for content registered in the content distribution management server, a list of DRM services provided by the user is transmitted to the DRM management server, and DRM license information for the DRM service provided by the user is transmitted to the DRM management server. A content distribution service system further comprising one or more DRM operator servers transmitting.
The method according to claim 4,
The second user terminal,
Send a content license request for the downloaded content to the content distribution provider server,
The content distribution provider server,
A content distribution service system that receives DRM license information corresponding to the downloaded content from one of the DRM management server and the DRM operator server and transmits the DRM license information to the second user terminal.
The method according to claim 5,
The content distribution provider server,
When the second user terminal first requests the DRM license information to the DRM operator server that provided the DRM module of the downloaded content, and there is no response from the DRM operator server for a preset time from the time of the first request, A content distribution service system that requests the DRM license information to the DRM management server a second time.
The method according to claim 4,
The DRM management server and the DRM operator server distribute a DRM module for providing a DRM service in a P2P manner and store DRM module distribution history information in a blockchain network, a content distribution service system.
One or more processors;
Memory; And
Contains one or more programs,
The one or more programs are stored in the memory and configured to be executed by the one or more processors,
The one or more programs,
An instruction for receiving a content registration request including content-related information for a given content from a user terminal;
Instructions for generating content identification information unique to the content and transmitting the generated content identification information to the user terminal;
A command for receiving a DRM service inquiry request for the content from the user terminal and transmitting a list of DRM services applicable to the content to the user terminal;
A command for receiving a DRM service request from the user terminal, and transmitting P2P unique key information capable of downloading a DRM module providing the corresponding DRM service to the user terminal; And
And instructions for receiving content upload information including content identification information and encryption key information of the content from the user terminal.
One or more processors, and
A peer-to-peer (P2P) -based content distribution method performed on a computing device having a memory storing one or more programs executed by the one or more processors,
Transmitting a member subscription request to a content distribution provider server;
Receiving a certificate according to the member subscription request from a certificate management server;
Transmitting a content purchase request for a predetermined content to the content distribution provider server;
Receiving a P2P unique key information list for content holding terminals having the content from the content distribution provider server;
Connecting to the content holding terminal based on the P2P unique key information list, and transmitting a certificate of the computing device to the content holding terminal;
Receiving a certificate of the content holding terminal from the content holding terminal;
Requesting a certificate validity check for the certificate of the content holding terminal to the certificate management server;
If the certificate of the content holding terminal is valid, transmitting a list of data blocks held by the computing device for the content to the content holding terminal;
Receiving a block of data not held by the computing device for the content from the content holding terminal; And
And checking whether there is an error in the received data block.
The method according to claim 9,
The content distribution method,
And if the certificate of the content holding terminal is invalid, transmitting a certificate invalid report to the content distribution provider server.
The method according to claim 10,
After the step of sending the certificate invalid report,
The content distribution method further comprising the step of requesting P2P unique key information to download the content by replacing the content retention terminal with the content distribution server.
The method according to claim 9,
The content distribution method,
If there is an error in the received data block, further comprising the step of sending a data block error report to the content distribution provider server to send a certificate revocation request to the certificate management server for the content holding terminal, content distribution Way.
The method according to claim 9,
The content distribution method,
Checking whether disconnection occurs while receiving a data block of the content from the content holding terminal;
If a connection disconnection occurs more than a preset number of times while receiving the data block of the content, a disconnection notification is sent to the content distribution provider server to transmit a certificate revocation request to the certificate management server for the content holding terminal. A method of distributing content, further comprising a step.
A storage unit for storing computer programs; And
An upload terminal comprising a transmission unit for transmitting the computer program to the distribution server,
The computer program,
Let the user terminal,
Transmitting a member subscription request to a content distribution provider server;
Receiving a certificate according to the member subscription request from a certificate management server;
Transmitting a content purchase request for a predetermined content to the content distribution provider server;
Receiving a P2P unique key information list for content holding terminals having the content from the content distribution provider server;
Connecting to the content holding terminal based on the P2P unique key information list, and transmitting a certificate of the user terminal to the content holding terminal;
Receiving a certificate of the content holding terminal from the content holding terminal;
Requesting a certificate validity check for the certificate of the content holding terminal to the certificate management server;
If the certificate of the content holding terminal is valid, transmitting a list of data blocks held by the user terminal for the content to the content holding terminal;
Receiving a block of data not held by the user terminal for the content from the content holding terminal; And
And a computer program to perform a step of checking whether there is an error in the received data block.
A storage unit for storing computer programs; And
A distribution server comprising a transmission unit for transmitting the computer program to the user terminal,
The computer program,
Let the user terminal,
Transmitting a member subscription request to a content distribution provider server;
Receiving a certificate according to the member subscription request from a certificate management server;
Transmitting a content purchase request for a predetermined content to the content distribution provider server;
Receiving a P2P unique key information list for content holding terminals having the content from the content distribution provider server;
Connecting to the content holding terminal based on the P2P unique key information list, and transmitting a certificate of the user terminal to the content holding terminal;
Receiving a certificate of the content holding terminal from the content holding terminal;
Requesting a certificate validity check for the certificate of the content holding terminal to the certificate management server;
If the certificate of the content holding terminal is valid, transmitting a list of data blocks held by the user terminal for the content to the content holding terminal;
Receiving a block of data not held by the user terminal for the content from the content holding terminal; And
And a computer program to perform a step of checking whether there is an error in the received data block.

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