KR20140129666A - Server apparatus and method for transacting license corresponding to encrypted contents applied drm - Google Patents

Abstract

Disclosed is a trading method of trading a license for digital rights management (DRM) content of a social network service (SNS) server. The trading method according to the present invention comprises: a step of receiving information on a license, which is requested to be sold, from a seller side terminal device which sells the license for the DRM content; a step of providing the information on the received license to a buyer side terminal device which requires to buy the license; a step of transmitting a payment request for the license to the buyer side terminal device and receiving the license from the seller side terminal device, when a request to buy for the license is received from the buyer side terminal device; a step of changing a binding element of the received license, when payment is completed at the buyer side terminal device according to the payment request; and a step of transmitting the license with the changed binding element to the buyer side terminal device.

Description

TECHNICAL FIELD [0001] The present invention relates to a server apparatus and a method for trading a license corresponding to content encrypted by a DRM method,

The present invention relates to a server apparatus and method for trading licenses corresponding to contents encrypted by a DRM method.

As computer technology has developed and popularized, the contents of general commerce (books, comics, recordings, movies, broadcasts, newspapers, etc.), which are produced, stored and managed in analog form, are becoming digitized.

It is easy to modify and copy (persistent high quality), easy to copy and modify even though it is used repeatedly indefinitely, and it is possible to transmit and distribute even a large amount of works in a short time using a high speed communication network The digital characteristics and advantages of easy to transfer and distribute are digitizing the analog form of work quickly.

However, the merits of such digital contents are also a factor that infringes on the rights and interests of original authors. Because it is the same as the original even if it has a copy, it weakens the intention to purchase the original, and because it is easy to modify and copy without the author's consent, the copyright theft becomes easy and the ease of delivery and distribution is illegal. It is possible to make even legal control impossible.

These negative factors can reduce the morale of the authors, reduce the willingness to make the works, and even cause the digitalization to hesitate. Therefore, there is a need for a technical protection device capable of efficiently managing copyright while fully utilizing the advantages of digital for digital contents.

In order to protect the interests and rights of digital contents, DRM (Digital Rights Management) technology has been applied to digital contents and various DRM methods have been used.

Here, the DRM is a right of each subject (content creator, distributor, distributor, user, copyright holder, etc.) participating in the lifecycle of digital contents (i.e., creation, processing, distribution and consumption of contents) And protects profits, and supports a series of technologies that support billing and payment processing for digital content usage.

Accordingly, the server for providing the digital contents using the DRM scheme encrypts and transmits the digital contents, and the license server transmits the license to the legitimate user so that the legitimate user can reproduce and output the digital contents. Here, the license includes a digital content encryption key used for decrypting the digital content and digital content use right information, which is information about digital content use.

On the other hand, conventionally, there has been no provision for activating transfer / transfer of the above-mentioned license to another person or transfer of the license from another person. For example, when DRM-based content is distributed from a primary user to a secondary user (DRM Super-Distribution), the secondary user issues a license for the content in order to issue a license corresponding to the distributed content Only the license management server specified earlier issued the license.

Therefore, there is a need for a method for activating the transfer / number of licenses, which is the right to use digital contents.

It is an object of the present invention to provide a server device and a transaction method that can combine a license transaction corresponding to content encrypted with a DRM method with an SNS environment.

According to another aspect of the present invention, there is provided a method of trading a license for DRM content of an SNS server, the method comprising: receiving, from a seller terminal device that sells a license for the DRM content, Information on the received license to a purchaser's terminal device to purchase the license, and when receiving a purchase request for the license from the purchaser's terminal device, The method comprising the steps of: transmitting a payment request for the license and receiving a license from the seller-side terminal device; changing a binding element of the received license upon completion of settlement in the buyer terminal device according to the payment request; If the binding element has a changed license, To the speech device.

The information on the license requested to be sold may include at least one of DRM content information to which the requested license is applied, usage right information of the license requested for sale, and price information of the license requested for sale .

Further comprising a step of requesting the seller terminal device to confirm the sale of the license when the purchasing request for the license is received from the purchaser's terminal device, , It is possible to transmit the settlement request for the license to the buyer terminal device and receive the license from the seller terminal device.

The changing step may include a step of removing a binding element for the seller-side terminal device from the license when the settlement is completed in the buyer-side terminal device according to the settlement request, and the step of removing the binding element for the seller- And combining the binding element for the purchaser's terminal device with the removed license.

According to another aspect of the present invention, there is provided an SNS server for receiving DRM content from a seller terminal device that sells a license for DRM content, To the purchaser's terminal device to purchase the license, and a communication section for transmitting the payment request for the license to the purchaser's terminal device when the purchase request for the license is received through the communication section And a control unit for controlling the communication unit to receive a license from the seller terminal device, wherein when the settlement is completed in the purchaser's terminal device according to the settlement request, And the binding element is changed to a changed license To the purchaser's terminal device.

The information on the license requested to be sold may include at least one of DRM content information to which the requested license is applied, usage right information of the license requested for sale, and price information of the license requested for sale .

The control unit controls the communication unit to request the seller terminal device to confirm the sales of the license when the purchase request for the license is received from the purchaser's terminal device, It is possible to transmit the settlement request for the license to the buyer terminal device and to control the communication section to receive the license from the seller terminal device.

When the settlement is completed in the purchaser's terminal device according to the payment request, the controller removes the binding element for the seller-side terminal device from the license, and the binding element for the seller- The binding element for the purchaser's terminal device may be combined.

According to the various embodiments of the present invention described above, it is possible to combine the license transaction corresponding to the content encrypted with the DRM scheme with the SNS environment. As a result, sales and purchase of licenses are made through the SNS, and the seller can expose sales information to a large number of people. In addition, the purchaser can determine the purchase after confirming more information, thereby widening the purchase range of the license.

FIG. 1 is a diagram illustrating a method of trading a license corresponding to content encrypted according to the DRM scheme according to the first embodiment of the present invention.
FIG. 2 is a diagram illustrating a method of trading a license corresponding to content encrypted according to the DRM scheme according to the first embodiment of the present invention in more detail.
FIG. 3 is a block diagram illustrating a method of trading a license corresponding to content encrypted according to the DRM scheme according to the second embodiment of the present invention.

The following merely illustrates the principles of the invention. Thus, those skilled in the art will be able to devise various apparatuses which, although not explicitly described or shown herein, embody the principles of the invention and are included in the concept and scope of the invention. Furthermore, all of the conditional terms and embodiments listed herein are, in principle, only intended for the purpose of enabling understanding of the concepts of the present invention, and are not to be construed as limited to such specifically recited embodiments and conditions do.

It is also to be understood that the detailed description, as well as the principles, aspects and embodiments of the invention, as well as specific embodiments thereof, are intended to cover structural and functional equivalents thereof. It is also to be understood that such equivalents include all elements contemplated to perform the same function irrespective of the currently known equivalents as well as the equivalents to be developed in the future, i.e., the structure.

Thus, for example, it should be understood that the block diagrams herein represent conceptual views of exemplary circuits embodying the principles of the invention. Similarly, all flowcharts, state transition diagrams, pseudo code, and the like are representative of various processes that may be substantially represented on a computer-readable medium and executed by a computer or processor, whether or not the computer or processor is explicitly shown .

The functions of the various elements shown in the figures, including the functional blocks depicted in the processor or similar concept, may be provided by use of dedicated hardware as well as hardware capable of executing software in connection with appropriate software. When provided by a processor, the functions may be provided by a single dedicated processor, a single shared processor, or a plurality of individual processors, some of which may be shared.

Also, the explicit use of terms such as processor, control, or similar concepts should not be interpreted exclusively as hardware capable of running software, and may be used without limitation as a digital signal processor (DSP) (ROM), random access memory (RAM), and non-volatile memory. Other hardware may also be included.

In the claims hereof, the elements represented as means for performing the functions described in the detailed description include all types of software including, for example, a combination of circuit elements performing the function or firmware / microcode etc. , And is coupled with appropriate circuitry to execute the software to perform the function. It is to be understood that the invention defined by the appended claims is not to be construed as encompassing any means capable of providing such functionality, as the functions provided by the various listed means are combined and combined with the manner in which the claims require .

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: There will be. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a diagram illustrating a method of trading a license corresponding to content encrypted according to the DRM scheme according to the first embodiment of the present invention. Referring to FIG. 1, a primary user can purchase a license corresponding to content encrypted in a DRM scheme from a first license server using his / her terminal device (1. purchase license). Here, the license purchased by the primary user may be a new license not used by another user, or a used license used by another user. Here, the used license may be a license in which the usage right for the content encrypted in the DRM scheme is limited by usage of another user. For example, in the used license, the total number of reproducible times of new licenses corresponding to movie contents encrypted by the DRM method is 10, but the number of reproducible times of the movie contents encrypted by the DRM method is 7 It can be a limited license.

Then, the primary user can use the content encrypted by the DRM method in his / her terminal device using the purchased license (2. license use). For example, if the content encrypted by the DRM method is movie content, the primary user can reproduce the movie content in his / her terminal device using the purchased license.

On the other hand, if the primary user intends to sell the purchased license, the primary user can request license sales to the first license server or the other second license server that purchased the license using his / her terminal device 3. License sales). In this case, the license requested for sale from the primary user is not available to the primary user. If the primary user desires to reuse the requested license, it can cancel the sales request to the license server that requested the sale of the license and use it again.

Then, the secondary user can purchase the license requested for sale by the primary user from the first license server or another second license server using his / her terminal device (4. purchase of license). Here, the purchase of the secondary user is performed by the first license server or the other second license server without the consent of the primary user because the primary user has transferred the sales authority to the first license server or the other second license server. Can be performed under the supervision of the user.

On the other hand, when the purchase of the license is completed by the secondary user, the license server can pay the sales amount to the primary user except for the commission based on the transaction relay.

Here, the license purchased by the secondary user may be a new license not used by another user, or a used license used by another user.

Here, the terminal device of the user uses various devices such as a smart phone, a tablet computer, a notebook computer, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player) and the like which can use DRM- .

The license server may include a license transaction server that receives the license sales request and the purchase request, and performs settlement, etc. to relay the license sales and purchase agency. In addition, the license server may include a license management server that manages the issuance of the license and the sending and receiving of the issued license. However, as described above, the license transaction server and the license management server may be implemented as separate server devices, or the license transaction server and the license management server may be combined into one server device .

On the other hand, the communication between the user's terminal device and the license server can be performed using a secure channel formed for enabling secure mutual communication. Here, the secure channel can be formed using a Public Key Infrastructure (PKI) scheme between the user terminal device and the license server, thereby protecting communication data between the user terminal device and the license server.

Further, in order to protect the purchased license, the user's terminal device can encrypt the license data using a specific value (Key), and record the encrypted license data in a file and manage it. In this case, the encryption key can be generated by using, for example, a file identifier (inode) value of a file to be recorded. That is, the file system of the Unix series OS is designed to identify the files by putting a file identifier (inode) for each file, and these file identifiers are given as unique values when the files are created, and are not changed thereafter. Accordingly, the encryption key for encrypting the license data can be generated using the file identifier (inode) value of the file to be recorded.

Further, when storing the purchased license, the user's terminal device can use the same to store the hash value of the license data to verify the integrity of the license data. Thus, it is possible to prevent forgery and falsification of the license through hash check of the license data. According to the purchased license protection method, since the transfer / copy / forgery of the stored license data can all be prevented, the license data can be safely protected.

The steps from sale to purchase of a license will be described in detail with reference to FIGS. 2 to 3 attached hereto.

FIG. 2 is a diagram illustrating a method of trading a license corresponding to content encrypted according to the DRM scheme according to the first embodiment of the present invention in more detail.

2, the seller 100-1 who wants to sell the license corresponding to the DRM-encrypted content can transmit a message to the SNS server 300 that he / she wishes to sell the license using his / her terminal device . Here, the transmission of the license sales desired message can be performed, for example, in the case of an SNS providing a personal space such as facebook, by placing a sales desired message on the wall / main door. Alternatively, in the case of the messenger-type SNS, the sales-desired message may be transmitted to the acquaintance of the seller 100-1. Here, the sales hope message includes information on the content to which the license to be sold is applied (for example, title, actor actor, etc. in the case of movie contents), usage right information of the license to be sold (for example, Reproducible, etc.), license sales price information, and the like.

In this case, the license transaction server 200 can receive the above-described desired sales message from the SNS server 300. [ Then, the license transaction server 200 uses the information on the license to be sold (information on the content to which the license to be sold is applied, usage right information on the license to be sold, license sales price information, etc.) You can perform sales agent services. For example, the license transaction server 200 may display information on a license to be sold on a web site, or may perform a sales agency service using various relay service methods.

On the other hand, according to the sales agency service of the above-described license transaction server 200, the buyer 100-2 who wants to purchase a license accesses the license transaction server 200 using his own terminal device, The information on the license requested for sale can be confirmed. Then, the purchaser 100-2 can request the license transaction server 200 to purchase the requested license from the seller 100-1 using his / her terminal device. In this case, the license transaction server 200 can notify the terminal device of the seller 100-1 of the purchase request through the SNS server 300.

On the other hand, when the seller 100-1 approves the sale using his own terminal device in accordance with the above-mentioned notification of the purchase request, the terminal device of the seller 100-1 transmits a request for sale to the license management server 400 License can be transferred.

In this case, the license management server 400 can notify the license transaction server 200 that the license requested for sale has been received. Here, the notification from the license management server 400 to the license transaction server 200 may include address information of the license management server 400. [

In this case, the license transaction server 200 may request the purchaser 100-2 to settle the license purchase cost.

When the settlement is completed, the terminal device of the purchaser 100-2 can request the license purchased from the license management server 400 using the address information of the license management server 400. [

In this case, the license management server 400 may remove the binding element corresponding to the seller 100-1 from the received license, and then bind the license to the binding element corresponding to the buyer 100-2. For example, when the received license is a device binding license, the license management server 400 transmits unique identification information of the terminal device of the seller 100 binding the license (the terminal unique identification information is a MAC address, (Such as a telephone number of the buyer 100-2), and then bind the license to the unique identification information of the terminal device of the buyer 100-2.

Alternatively, when the received license is a user binding license, the license management server 400 may acquire unique identification information of the seller 100 binding the license (here, the seller unique identification information may include a seller such as a resident registration number, Information that can be distinguished from other users), and bind the license to the unique identification information of the purchaser 100-2.

Then, the license management server 400 can transfer the license for which the binding element has been changed to the terminal device of the buyer 100-2. Then, the license management server 400 can notify the license transaction server 200 that the license transfer to the terminal device of the purchaser 100-2 has been completed.

In this case, the license transaction server 200 can pay the seller 100-1 the license sales amount excluding the sales commission fee.

According to various embodiments of the present invention, the license transaction server 200 and the license management server 400 are separated into separate server devices. However, the present invention is not limited to this, Or may be implemented in a form that performs the functions of the license management server 400. [

According to the first embodiment of the present invention, a license direct transaction between the license seller and the license purchaser can be performed using the SNS server and the license transaction server.

FIG. 3 is a block diagram illustrating a method of trading a license corresponding to content encrypted according to the DRM scheme according to the second embodiment of the present invention. Here, the transaction method according to the second embodiment of the present invention is similar to the first embodiment of the present invention. However, in the first embodiment of the present invention in that a license direct transaction is performed between a license seller and a license purchaser through the SNS without a license transaction server, May be different from the embodiment. Therefore, in the following description of FIG. 3, a detailed description of the portion explained in FIG. 2 will be omitted.

3, the seller 100-1 who wishes to sell the license corresponding to the DRM-encrypted content can transmit a message to the SNS server 300 that he wishes to sell the license by using his / her terminal device . Here, as described above, transmission of the license sales desired message can be performed by using, for example, facebook or messenger type SNS. Here, the sales hope message may include information about the content to which the license to be sold is applied, usage right information of the license to be sold, license selling price information, and the like.

In this case, the buyer 100-2 who wants to purchase the license requested for sale can send a message to the SNS server 300 that he wishes to purchase the license using his / her terminal device. Then, the SNS server 300 can transmit the purchase request message of the buyer 100-2 to the terminal device of the seller 100-1 requesting the license sale.

In this case, when the seller 100-1 approves the sale of the license, the terminal device of the seller 100-1 can transmit the license requested for sale to the license management server 400. [

In this case, the license management server 400 can notify the SNS server 300 that the license requested for sale has been received. Here, the notification from the license management server 400 to the SNS server 300 may include address information of the license management server 400. [

In this case, the SNS server 300 may request the purchaser 100-2 to settle the license purchase cost. When the settlement is completed, the terminal device of the purchaser 100-2 can request the license purchased from the license management server 400 using the address information of the license management server 400. [

In this case, the license management server 400 may remove the binding element corresponding to the seller 100-1 from the received license, and then bind the license to the binding element corresponding to the buyer 100-2. For example, when the received license is a device binding license, the license management server 400 transmits unique identification information of the terminal device of the seller 100 binding the license (the terminal unique identification information is a MAC address, (Such as a telephone number of the buyer 100-2), and then bind the license to the unique identification information of the terminal device of the buyer 100-2.

Alternatively, when the received license is a user binding license, the license management server 400 may acquire unique identification information of the seller 100 binding the license (here, the seller unique identification information may include a seller such as a resident registration number, Information that can be distinguished from other users), and bind the license to the unique identification information of the purchaser 100-2.

Then, the license management server 400 can transfer the license for which the binding element has been changed to the terminal device of the buyer 100-2. Then, the license management server 400 can notify the SNS server 300 that the license transfer to the terminal device of the buyer 100-2 has been completed.

In this case, the SNS server 300 can pay the seller a sales amount excluding the sales commission fee to the seller 100-1.

Although the SNS server 300 and the license management server 400 have been described as separate server devices according to various embodiments of the present invention, the present invention is not limited to this, Or may be implemented in a form that performs the functions of the server 400. [

According to the second embodiment of the present invention, it is possible to perform the license direct transaction between the license seller and the license purchaser using the SNS server.

Meanwhile, according to the various embodiments of the present invention described above, it is possible to combine the license transaction corresponding to the content encrypted with the DRM method with the SNS environment. As a result, sales and purchases of licenses are made through the SNS, so that sellers can expose sales information to a large number of people. In addition, the buyer can determine the purchase after confirming more information, .

Meanwhile, the method according to various embodiments of the present invention described above may be implemented in program code and provided to each server or devices in a state stored in various non-transitory computer readable media.

A non-transitory readable medium is a medium that stores data for a short period of time, such as a register, cache, memory, etc., but semi-permanently stores data and is readable by the apparatus. In particular, the various applications or programs described above may be stored on non-volatile readable media such as CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM,

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, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

Claims (8)

A transaction method for trading a license for DRM contents of an SNS server,
Receiving information on a license requested for sale from a seller terminal device that sells a license for the DRM content;
Providing information on the received license to a buyer terminal device to purchase the license;
Transmitting a payment request for the license to the buyer's terminal device and receiving a license from the seller's terminal device when the purchase request for the license is received from the buyer's terminal device;
Changing a binding element of the received license when payment is completed in the purchaser's terminal device according to the payment request; And
And transmitting the changed license to the purchaser's terminal device. The method according to claim 1,
The information about the license requested for sale,
Wherein the license information includes at least one of DRM content information to which the sales requested license is applied, usage right information of the license requested to be sold, and price information of the license requested to be sold. The method according to claim 1,
And requesting the seller terminal device to confirm the sales of the license when the purchase request for the license is received from the buyer terminal device,
And transmits a payment request for the license to the buyer terminal device and receives the license from the seller terminal device when the seller terminal device approves the sale of the license. The method according to claim 1,
Wherein the modifying comprises:
Removing the binding element for the seller-side terminal device from the license when payment is completed in the buyer terminal device according to the payment request; And
Combining the binding element for the buyer's terminal device with a license for which the binding element for the seller-side terminal device has been removed. In the SNS server,
A communication unit that receives information on a license requested for sale from a seller terminal device that sells a license for the DRM content and provides the information on the received license to the purchaser's terminal device that intends to purchase the license; And
And transmits the settlement request for the license to the buyer's terminal device when the purchase request for the license is received from the buyer's terminal device through the communication section and controls the communication section to receive the license from the seller terminal device And a controller
Wherein,
And controls the communication unit to change the binding element of the received license and to transmit the changed license to the purchaser's terminal device when the settlement is completed in the buyer's terminal device according to the payment request SNS server. 6. The method of claim 5,
The information about the license requested for sale,
Wherein the sales information includes at least one of DRM content information to which the sales requested license is applied, usage authorization information of the license requested for sale, and price information of the license requested for sale. 6. The method of claim 5,
Wherein,
And controls the communication section to request the seller terminal device to confirm the sales of the license when the purchase request for the license is received from the buyer terminal device,
Wherein the seller terminal device transmits the settlement request for the license to the buyer terminal device and controls the communication section to receive the license from the seller terminal device upon approval of the sale of the license by the seller terminal device . 6. The method of claim 5,
Wherein,
The binding element for the seller-side terminal device is removed from the license when payment is completed in the buyer-side terminal device according to the payment request, and the binding element for the seller- To the SNS server.

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