KR20030097465A - License issuance apparatus and digital rights management system snd method using it - Google Patents

Abstract

PURPOSE: A device for issuing a licence and a system for managing a digital CONSTITUTION: A packager(12) of a contents provider/retailer encodes digital contents using an encoding key and registers the encoding key and meta data of encoded digital contents. A clearinghouse(11) receives/manages meta data, interlocks with a payment gateway(14), issues/manages a license capable of solving corresponding encoded digital contents by the calculated packager(12). When a user requests a contents reproduction, a contents player(16) checks a license of the user, requests an issue of a license to the clearinghouse(11), and decodes the corresponding digital contents being supplied by the contents provider/retailer using an issued license.

Description

License issuance apparatus and digital rights management system using same, and method therefor {License issuance apparatus and digital rights management system snd method using it}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of information protection technology, and in particular, a license issuing device (Clearinghouse) capable of preventing illegal use of digital content having the same quality as the original and protecting and managing the rights of content authors even after infinite copying. And a digital rights management (DRM) system using the same, a method thereof, and a computer-readable recording medium having recorded thereon a program for realizing the method.

The terms used in the present invention are defined as follows.

Digital Rights Management (DRM) refers to a function that protects and manages the rights of digital content creators.

License refers to data that contains the decryption key used to decrypt the encrypted content and the contents specifying the right (number, duration) of the content.

Metadata means data describing data. For example, content metadata is data that contains additional description of the content.

Clearinghouse is a system that performs license issuance, statistical function, billing, financial settlement and settlement to solve encrypted contents by packager, and plays a key role of DRM system.

A packager is a device that performs a series of tasks of attaching a header containing a Uniform Resource Locator (URL), a commerce vendor information, and the like, after encrypting content by using an encryption key.

Digital content, unlike analog content, retains the same quality as the original after several copies. When digital content having such characteristics meets the Internet communication media, copies of the same quality as the original can be propagated infinitely rapidly. That's why content owners (e.g., Hollywood filmmakers) who have invested so much capital and effort are reluctant to digitize their content and commercialize it on the Internet. This climate eventually leads to disadvantages in that content consumers (users) cannot receive high quality content.

Currently, the method used to protect digital content provided by the Internet is a content access control method, which enables users to access and use content after subscribing to a content seller or a service provider and paying a content service price. Content security processing is performed by using a billing authentication method in addition to the login method. However, such a content access control method, when a digital file is stored in a hard disk of a personal computer (Personal Computer) at a content service site (shopping mall) and then played back, the user pays a fee and secures the content once. If you then copy the downloaded file to your relatives or colleagues, the content protection device will no longer work. Therefore, login-based digital protection is inevitably dependent on the conscience of the user.

To secure this flaw, DRM technology has emerged. This DRM technology first converts the content into a digital file format via an encoder in a form capable of DRM packaging (see FIG. 2). The content is encrypted using an encryption key here. Users can copy and distribute this encrypted content at will, but a decryption key is necessary to use the encrypted content. In addition, the player is required to play the decrypted content. The player plays a role in controlling the use of digital content in addition to the decoding function. That is, the user can use the content only within the content usage right concluded with the shopping mall at the time of downloading the content.

However, the current DRM system has its technology and market in the early stages of formation, and each component technology is scattered, but there is no DRM system that provides DRM services to multiple content providers (CP) in one large framework. .

Therefore, in the current technical field, a method of implementing a DRM system that can control the illegal use of digital digital content to protect the interests of the copyright holder of digital content and track the usage history of the content is required.

The present invention has been proposed in response to the above-described demands, and a license issuing apparatus for controlling the illegal use of digital digital contents to protect the interests of copyright holders of digital contents and tracking the usage history of the contents and using the same. It is an object of the present invention to provide a digital rights management (DRM) system and a method thereof and a computer-readable recording medium recording a program for realizing the method.

1 is a diagram illustrating an embodiment of a digital rights management system and an operation method thereof according to the present invention;

FIG. 2 is an exemplary diagram illustrating components of an encoder, a packager, and the like used in the packaging of digital content used in the present invention, and input / output values required for performing their work.

3 is a diagram illustrating an example of a structure of a header added to a content by a packager used in the present invention.

Figure 4 is a detailed configuration diagram of one embodiment of the clearing house (license issuing device) of Figure 1 according to the present invention.

5 is a flowchart illustrating an operation of a DRM player in a PC of a content user according to the present invention.

* Explanation of symbols for the main parts of the drawings

11: clearing house 12: packager

13: Web server and content DB 14: Financial institutions

15: license storage unit 16: content player

The present invention for achieving the above object, in a digital rights management (DRM) system, after encrypting the digital content using the encryption key, the content provider / seller for registering the encryption key and the metadata of the encrypted digital content Encryption means; License issuing means for registering and managing the metadata, and issuing and managing a license to solve the digital content encrypted by the encryption means billed in association with a financial institution; And content reproducing means for requesting a license issuance to the license issuing means by investigating a user's license and decoding the corresponding digital content provided by the content providing / seller using the issued license. Characterized in that made.

In addition, the present invention provides a license issuing apparatus, comprising: matching means for matching content users, commerce companies, and operators; Control means for controlling and controlling the overall operation of the device for a digital rights management (DRM) service; First management means for reporting and recording management of DRM activity in the device under the control of the control means; Under the control of the control means, a merchant registration means for processing registration of a content provider / seller (commerce vendor) to provide / sell digital content; Content registration means for registering a content registration file packaged through a packager of a commerce vendor under the control of the control means; Second control means for storing and managing information necessary for issuance of a license in a registered file of packaged content under the control of the control means; Billing / payment processing means for processing financial matters relating to a license between a commerce company and a content user under the control of the control means; License issuing means for issuing a license for solving the digital content which is charged and charged when the license issuance request is under the control of the control means; And transaction history processing means for storing and managing transaction details regarding license issuance, and providing transaction details to a commerce company.

In order to achieve the above object, the present invention provides a digital rights management (DRM) service to a clearing house by a digital contents copyright holder or a provider / seller in a digital rights management (DRM) method for allowing illegal copying of digital contents and preventing illegal use. Registering with the first step; A second step of the clearing house of notifying the system usage information to the copyright holder or the provider / seller of the digital content registered in the DRM service; A third step of the digital content creator or the provider / seller encrypting the digital content with an encryption key using a packager included in the system usage information, and then registering the encryption key and metadata of the encrypted digital content in the clearing house; A fourth step of, upon requesting content playback from a user, a player having a DRM function checking the existence of a license, the validity of the license itself, and the right to use the content; In the case of a valid license, the player decrypts the corresponding digital content provided by the content provider / seller requested by the user using the valid license and presents it to the user in accordance with the right to use according to the result of the investigation in the fourth step. 5 steps; And if the license does not exist or is an invalid license according to the investigation result of the fourth step, after the player makes a use contract for the digital content, a request for issuance of a license for solving the digital content charged for is settled. And a sixth step of decoding the corresponding digital content using the license issued from the clearing house and presenting it to the user in accordance with the right to use.

The present invention for achieving the above object is, in the digital rights management (DRM) method for allowing illegal copying of digital content and preventing illegal use, the digital content copyright holder or providing the clearing house to receive digital rights management (DRM) service / First step of registering a seller; A second step of notifying the system usage information to the registered digital content copyright holder or the provider / seller of the DRM service; A third step in which the clearing house registers and manages the metadata of the digital content encrypted by the packager included in the system usage information and the encryption key used to encrypt the digital content by the creator or provider / seller of the digital content; And a fourth step of the clearing house issuing a license to the user's terminal to unlock the corresponding digital content that is charged by the user in connection with a financial institution.

In addition, the present invention is a fifth step of the player having a DRM function to investigate the existence of the license, the validity of the license itself and the content use rights when the content playback request from the user; In the case of a valid license, the player decrypts the corresponding digital content provided by the content provider / seller requested by the user using the valid license and presents it to the user in accordance with the right to use according to the finding of the fifth step. 6 steps; And if the license does not exist or is an invalid license according to the investigation result of the fifth step, after the player has signed a use agreement with respect to the digital content, a request for issuance of a license to solve the charged digital content is requested. The method may further include a seventh step of decoding the corresponding digital content using a license issued from the clearing house and presenting the same to a user according to a right to use.

In order to achieve the above object, the present invention provides a digital rights management (DRM) system equipped with a processor, a digital contents copyright holder or a provider / seller in a clearing house in order to prevent illegal use while allowing the copying of digital contents. A first function of registering with a (DRM) service; A second function of the clearing house notifying the system usage information to the digital content copyright holder or the provider / seller of the DRM service registration; A third function of the digital content author or the provider / seller encrypting the digital content with an encryption key using a packager included in the system usage information, and then registering the encryption key and metadata of the encrypted digital content in the clearing house; A fourth function of, when the user requests to play the content, a player having a DRM function checks whether the license exists, the validity of the license itself, and the right to use the content; According to a result of the investigation of the fourth function, in the case of a valid license, the player decrypts the digital content provided by the content provider / seller requested by the user using the valid license and presents it to the user in accordance with the right to use. 5 functions; And if the license does not exist or is an invalid license according to the investigation result of the fourth function, after the player makes a use agreement with respect to the corresponding digital content, a request for issuance of a license to solve the charged digital content is requested. The present invention provides a computer-readable recording medium having recorded thereon a program for realizing a sixth function presented to a user in accordance with a right to use by decoding the corresponding digital content using a license issued from the clearing house.

In order to achieve the above object, the present invention provides a digital rights management (DRM) system in which a clearing house is intended to receive digital rights management (DRM) services in a digital rights management (DRM) system having a processor in order to prevent the illegal use while allowing the reproduction of digital contents. A first function of registering a content copyright holder or a provider / seller; A second function of notifying the system usage information to the registered digital content copyright holder or the provider / seller of the DRM service; A third function of registering and managing metadata of the digital content encrypted by the clearing house by a packager included in the system use information and an encryption key used when encrypting the digital content by the creator or provider / seller of the digital content; And a computer-readable recording medium having recorded thereon a program for realizing a fourth function of issuing a license to the user's terminal for the clearing house to interoperate with a financial institution to solve the billed digital content requested by the user. to provide.

In addition, the present invention provides a fifth function of checking the existence of a license, the validity of the license itself, and the right to use a content by a player having a DRM function when a content playback request is made from a user; According to a result of the investigation of the fifth function, in the case of a valid license, the player decrypts the corresponding digital content provided by the content provider / seller requested by the user using the valid license and presents it to the user in accordance with the right to use. 6 functions; And if the license does not exist or is an invalid license according to the result of the investigation of the fifth function, after the player makes a use contract for the corresponding digital content, request for issuance of a license to solve the charged digital content. By using the license issued from the clearing house, a computer-readable recording medium having recorded thereon a program for further realizing the seventh function of decoding the corresponding digital content and presenting it to the user in accordance with the right to use.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating an embodiment of a digital rights management system and an operation method thereof according to the present invention.

As shown in FIG. 1, in order to prevent illegal use while allowing digital content to be copied, the digital rights management (DRM) system according to the present invention encrypts digital content using an encryption key, and then encrypts the encryption key with an encryption key. The packager 12 of the content provider / retailer for registering the metadata of the digital content, the packager that receives and manages the metadata, and works with the financial gateway 14 to settle the billing. Clearinghouse (license issuing device) 11 for issuing and managing a license to solve the digital content encrypted with (12), and the user's license is investigated when the user plays back the content. (11) a content request for issuance of a license, and decrypt the corresponding digital content provided by the content provider / seller using the issued license. The player 16 includes a player.

The digital rights right (DRM) system is largely comprised of a DRM clearing house (license issuing device) 11, a packager 12, and a content player 16 with a DRM function.

The content provider / seller's packager 12 uses an encoder to convert other types of digital content into a file format that the packager 12 can recognize, as shown in FIGS. 2 and 3.

The packager 12 includes a file (content) from the encoder as shown in FIG. 2, content metadata containing various information (title, artist name, etc.) about the content, and information of a content provider / seller. After packaging the content provider / seller metadata and the encryption key required for the content packaging as input values, the packaged content registration file required for registering the packaged content and package with the DRM clearing house 11 as a result is exported. send. Here, the internal structure of the packaged content after packaging is as shown in FIG. That is, FIG. 3 shows a structure of a header added to the content by the packager 12 when packaging.

The packager 12 adds a header to the content through the encoder, and the header issues a license for content metadata and information related to encryption / decryption, a decryption key and a right to use the packaged content as shown in FIG. It consists of a set of metadata that can contain information on the website link (URL: Uniform Resource Locator) that can be received and information required for operation in the DRM system.

When the content player 16 requests the user to play the content, the content player 16 examines the user's license, requests the clearing house 11 to issue a license, and uses the issued license to provide the web server of the content provider / seller and the packaged content DB ( Decode the corresponding digital content provided by the 13 only in the terminal (PC) that is provided.

That is, as shown in FIG. 5, the content player 16 checks whether a content license exists in the PC in which the content player 16 is embedded, and then checks the validity (operation, etc.) of the license itself and the content usage right embedded therein. If the license is expired (501), the content is played (504), and if the license has expired, the license server URL (see FIG. 3) in the content header is searched to form a license agreement (502, 503). If the license does not exist or exists but is not valid (if the license has expired), it goes to the license server (DRM Clearinghouse 11) URL in the packaged content header (502) and requests for a license issue. The license is issued from the DRM clearing house 11 (503). However, if a PC license exists and the license is valid, the content is decoded and played back using the decryption key in the license (504).

The clearing house (license issuing device) 11 is a key element of the digital rights management (DRM) system, and decrypts the decryption key and the decrypted content necessary for decrypting the content encrypted in the content packager 12 at the content consumer (content user) end. It plays a role of issuing a license that contains information such as usage rights that may restrict the use. In addition, each time the license is issued, it is linked with the financial institution 14. A more detailed description thereof will be described in more detail with reference to FIG. 4.

As shown in FIG. 4, the clearing house 11 is a user interface module 41 to 43 for matching content users, commerce companies, and operators, and the overall device of the digital rights management (DRM) service. A user management service module 44 for controlling and managing operations, a reporting and recording function module 45 for reporting and recording DRM behavior of the clearing house under the control of the user management service module 44, and user management Under the control of the service module 44, under the control of the merchant registration module 46 and the user management service module 44 for processing the registration of the content provider / seller (commerce merchant) to provide / sell digital content. , Under the control of the content registration module 47 and the user management service module 44 for registering the content registration file packaged through the packager 12 of the commerce vendor, Under the control of the database and DB processing module 48 and the user management service module 44 for storing and managing information necessary for issuance of licenses in the content registration file, the financial matters relating to the license between the commerce merchant and the content user are processed. Under the control of the billing / payment processing module 50 and the user management service module 44, a license-related module 49 for issuing a license to solve the corresponding digital content billed in the license issuance request, and And a transaction history processing module 50 for storing and managing transaction details regarding license issuance and providing transaction details to a commerce company.

The clearing house (license issuing device) 11 is composed of a user interface layer and a business logic layer.

First, a user interface (UI) layer includes a content user interface module 41 that processes input values and reactions of a content user or player 16, and a registered and packaged content of a commerce vendor (content provider / seller). And a commerce vendor interface module 42 for processing a registration file and the like, a clearing house manager interface module 43, and the like. Content users and merchants except for the clearinghouse manager enter through the external Internet, so that firewalls are provided in the content user interface module 41 and the merchant interface module 42 to prevent illegal use and intrusion.

The business logic layer includes a user management service module 44 for managing the clearing house 11, a reporting and recording function module 45 for reporting and recording all actions occurring in the clearing house 11, and a trader providing a DRM service. A commercial transaction registration module 46 which performs a series of processes when registering for the first time and a registered content registration file which operates when a commercial transaction registers a packaged content registration file which is a result generated after using the packager 12. Database and DB for storing, managing, and retrieving information required for operating the module 47, the clearing house 11, information required for license issuance (password / decryption related information), etc., among registered files of packaged contents The processing module 48, the license-related module 49 for issuing licenses, and the billing / payment system for processing financial matters between the commerce merchant and the content user. And a transaction module 411 for processing records relating to license issuance.

The operation of the digital rights management (DRM) system will now be described in more detail with reference to FIG. 1.

First, a DRM service applicant (content author, provider / seller) who wants to receive digital content copyright management and protection service registers with the DRM clearing house 11 using a web user interface (1).

After that, the DRM clearing house manager processes the registration of the DRM service applicant and sends a confirmation email (2). At this time, a variety of information is delivered to the reply mail, the message sign key (Sign Key) used to sign the unique ID of the DRM service applicant and all messages sent between the DRM clearing house 11 from the DRM service applicant in the future Contains information such as value, packager 12 that can package DRM content, website address, and DRM service usage guide. In addition, all transmission messages have a text format and more preferably use Extensible Markup Language (XML), but are not limited thereto.

Next, the DRM service applicant installs the packager 12 according to the procedure sent by e-mail, and then packages all contents to be sold using the DRM service through the packager 12 using the displayed information of FIG. 2. (3).

Subsequently, the DRM service applicant (content author, content provider / seller) registers the packaged content in the clearing house 11 (4). This content registration procedure is performed as follows. At this time, the packaged content is placed in the content database 13 of the content provider / seller, and only the package content registration file (see FIG. 2) is signed with a message sign key and then transmitted to the clearing house 11. Here, the method used for encrypting and decrypting content uses a symmetric key method. In other words, the same key used for encryption is also used for decryption. Therefore, the key value used for encryption is sent to the clearing house 11 using the message signing key, and the key used for encryption is again used for decryption of the content when a license issuance request is requested from the content user (player 16).

Thereafter, the content user searches for the desired content on the site of the content provider / seller and makes a purchase request (5). In this case, the contract with the content provider / seller is required to determine the right to use the content, that is, how many times it will be played or how long (period: unlimited, number of days) to view, and whether to allow copying to another medium (CD or portable device). Tighten. In this case, the charge for the content purchase request may impose a usage fee on the content user in the DRM clearing house 11 having a function of linking with the content provider / seller site itself or the financial institution 14 (6-1, 6). -2). Smaller content providers / sellers can earn more from small capital given to use the financial settlement functions of the DRM clearing house 11 rather than have their own financial settlement and settlement functions, and the DRM clearing house 11 finances You can make a profit by adding a commission from settlement.

Thereafter, the content user pays with her preferred payment method (7). Examples include credit cards, bank transfers, and cell phone payments.

Then, the financial institution 14 notifies the content provider / seller and the DRM clearing house 11 of the payment result of the content user (8-1, 8-2).

Next, the content provider / seller (shopping mall) notified of the payment processing result from the financial institution 14 requests the license issuance processing to the DRM clearing house 11 (9). At this time, the information is transmitted together with the content usage rights, content ID, and the user's unique information using the PC or operating system to play the content.

In response, the DRM clearing house 11 sends the license to the content user (consumer) (10). Then, the content provider / seller sends the content to the content user (consumer) (11). Here, the license delivery process 10 may be performed before the content delivery process 11.

Subsequently, the DRM clearing house 11 periodically sends a transaction statement to the content provider / seller 12. In addition, if necessary, the content provider / seller may access the DRM clearing house 11 to check his / her registration status, content registration contents, transaction details, and the like (13).

As described above, the procedure of obtaining a license after a consumer (content user) purchases content from a shopping mall (content provider / seller) site is described. However, if the user A (content user) copies the content from the consumer B who already owns the content, and the validity (period, number of times) of the customer's content license C is terminated, the content protection is as follows. The same process can be used for copyright protection.

First, the DRM function-embedded content player 16 in the user's PC checks whether a content license exists, and then checks the validity (operation, etc.) of the license itself and the content usage right embedded therein (a).

As a result of the investigation, if the content is valid, the content is played, and if the license expires, the license server URL (see FIG. 3) in the content header is found to enter a license agreement (b-1, b-2).

That is, when the license server URL is designated as a shopping mall (content providing / seller) site providing / selling the content, a license agreement is established between the content user and the shopping mall (b-1), and the content user is sent to the content user in the shopping mall (content providing / seller). If the user charges a fee for using the content (c-1), and the user pays the content fee to the financial institution 14 associated with the shopping mall using his preferred payment method (d), the financial institution 14 sends the shopping mall to the shopping mall. The content user notifies that the payment has been completed (e-1), and requests the clearing house 11 to issue a license in the shopping mall that has received the payment notice (f). In this case, when the shopping mall goes bankrupt, a dead link occurs and the content no longer has life.

On the other hand, when the license server URL is set to the clearing house 11, enter into a license agreement between the content user and the clearing house 11 (b-2), the clearing house 11 charges the content user for the use of the content (C-2), when the user pays the content fee to the financial institution 14 associated with the shopping mall as his preferred payment method (d), the financial institution 14 has completed the payment of the content user to the shopping mall. The clearing house 11 is notified (e-2). In this case, it is not necessary to pay attention to the bankruptcy of a small shopping mall, and content distribution (copying) among content users is possible regardless of the period.

As such, the content user may enter into a content use contract with the shopping mall or the clearing house 11 (b-1, b-2).

Subsequently, the clearing house 11 receives a license issuance request from a shopping mall (content provider / seller) (f) or a payment confirmation notification from the financial institution 14 (e-2). . At this time, the clearing house 11 provides a transaction history to the shopping mall (contents provider / seller) (h). In addition, if necessary, the content provider / seller may access the DRM clearing house 11 to check his / her registration status, content registration contents, transaction history, etc. (i).

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, the present invention provides a system capable of protecting the copyrights of digital content creators and providers / distributors, thereby protecting the rights and interests of digital content creators and providers / distributors, and providing high quality content to content users. There is an effect that can be provided at a low price.

Claims (21)

In a digital rights management (DRM) system, Encrypting means of the content provider / seller for encrypting the digital content using the encryption key and then registering the encryption key and metadata of the encrypted digital content; License issuing means for registering and managing the metadata, and issuing and managing a license to solve the digital content encrypted by the encryption means billed in association with a financial institution; And Content playback means for retrieving the user's license and requesting the license issuance to the license issuing means and decoding the corresponding digital content provided by the content provider / seller using the issued license upon request of the user to play the content. Digital rights management system comprising a. The method of claim 1, The license is A digital rights management system, characterized in that it contains data that specifies the decryption key used to decrypt the encrypted digital content and the right (number, duration) of the content. The method of claim 2, The license issuance means, Matching means for matching content users, commerce vendors (content providers / sellers), and operators; Control means for controlling and controlling the overall operation of the device for a digital rights management (DRM) service; First management means for reporting and recording management of DRM activity in the device under the control of the control means; Under the control of the control means, a merchant registration means for processing registration of a content provider / seller (commerce vendor) to provide / sell digital content; Content registration means for registering a content registration file packaged through a packager of a commerce vendor under the control of the control means; Second control means for storing and managing information necessary for issuance of a license in a registered file of packaged content under the control of the control means; Billing / payment processing means for processing financial matters relating to a license between a commerce company and a content user under the control of the control means; License issuing processing means for issuing a license to solve the digital content which is charged and charged when a license issuance request is under the control of the control means; And Transaction history processing means for storing and managing transaction details related to license issuance and providing transaction details to a commerce company (content provider / seller). Digital rights management system comprising a. The method according to any one of claims 1 to 3, The content provider / seller, The digital copyright is characterized in that the digital content is packaged (encryption and access trace detection) through the encryption means, only the encryption key and metadata used for packaging are registered in the license issuing means, and the packaged digital content is managed in a database. Management system. The method of claim 4, wherein When packaging the digital content, And a license server website link (URL) included in a header as the license issuing means together with a content provider / seller (commerce vendor). The method according to any one of claims 1 to 3, The encryption means of the content provider / seller, A digital rights management system characterized by performing a series of operations of encrypting digital content using an encryption key and attaching a header containing an Internet address (URL) to which a license can be issued and a content providing / seller information. The method according to any one of claims 1 to 3, In the encryption and decryption, By using the symmetric key method, the key used for encryption is used equally for decryption, and the key value used for encryption is sent to the license issuing means by using a message sign key, which is used for encryption when requesting a license issuance from the content reproducing means. And using the key again for decryption of the digital content. The method according to any one of claims 1 to 3, The content reproduction means, When the user requests to play the content, the license of the user is examined and the license issuing means issued a license, and the content providing means provides the corresponding digital content provided by the content provider / seller using the issued license. Digital rights management system, characterized in that only decoding on the terminal. In the license issuing device, Matching means for matching content users, commerce vendors, and operators; Control means for controlling and controlling the overall operation of the device for a digital rights management (DRM) service; First management means for reporting and recording management of DRM activity in the device under the control of the control means; Under the control of the control means, a merchant registration means for processing registration of a content provider / seller (commerce vendor) to provide / sell digital content; Content registration means for registering a content registration file packaged through a packager of a commerce vendor under the control of the control means; Second control means for storing and managing information necessary for issuance of a license in a registered file of packaged content under the control of the control means; Billing / payment processing means for processing financial matters relating to a license between a commerce company and a content user under the control of the control means; License issuing means for issuing a license for solving the digital content which is charged and charged when the license issuance request is under the control of the control means; And Transaction history processing means for storing and managing transaction history regarding license issuance and providing transaction history to commerce company License issuing device comprising a. The method of claim 9, The license is A license issuing device, characterized in that it contains data that specifies the decryption key used to decrypt the encrypted digital content and the right (number, duration) of the content. The method according to claim 9 or 10, The content provider / seller, A license issuing device comprising packaging (encrypting and detecting access traces) digital content through a packager, registering only encryption keys and metadata used for packaging in the license issuing device, and managing the packaged digital content in a database. The method of claim 11, When packaging the digital content, And a license server website link (URL) included in a header as the license issuing device together with the content provider / seller. In the digital rights management (DRM) method for allowing illegal copying of digital content and preventing illegal use, A first step in which a digital contents copyright holder or a provider / seller registers a digital rights management (DRM) service in a clearing house; A second step of the clearing house of notifying the system usage information to the copyright holder or the provider / seller of the digital content registered in the DRM service; A third step of the digital content creator or the provider / seller encrypting the digital content with an encryption key using a packager included in the system usage information, and then registering the encryption key and metadata of the encrypted digital content in the clearing house; A fourth step of, upon requesting content playback from a user, a player having a DRM function checking the existence of a license, the validity of the license itself, and the right to use the content; In the case of the valid license, the player decrypts the corresponding digital content provided by the content provider / seller requested by the user using the valid license and presents it to the user in accordance with the right to use according to the survey result of the fourth step. Step 5; And If the license does not exist or is an invalid license according to the investigation result of the fourth step, after the player enters into a contract for use of the digital content, the player requests for issuance of a license to solve the charged digital content. A sixth step of decrypting the corresponding digital content using a license issued from the clearing house and presenting it to the user according to a right to use Digital rights management method comprising a. In the digital rights management (DRM) method for allowing illegal copying of digital content and preventing illegal use, A first step in which the clearing house registers the copyright holder or the provider / seller of the digital contents to receive the digital rights management (DRM) service; A second step of notifying the system usage information to the registered digital content copyright holder or the provider / seller of the DRM service; A third step in which the clearing house registers and manages the metadata of the digital content encrypted by the packager included in the system usage information and the encryption key used to encrypt the digital content by the creator or provider / seller of the digital content; And A fourth step of the clearing house issuing a license to the user's terminal to solve the corresponding digital content that has been settled by the user in connection with a financial institution; Digital rights management method comprising a. The method of claim 14, A fifth step of, when a user requests content playback from a user, a player having a DRM function checking whether a license exists, the validity of the license itself, and the right to use the content; In the case of a valid license, the player decrypts the corresponding digital content provided by the content provider / seller requested by the user using the valid license and presents it to the user in accordance with the right to use according to the finding of the fifth step. 6 steps; And If the license does not exist or is an invalid license according to the investigation result of the fifth step, after the player enters into a contract for use of the digital content, the player requests for issuance of a license to solve the charged digital content. A seventh step of decrypting the corresponding digital content using a license issued from the clearing house and presenting it to the user according to a right to use Digital rights management method further comprising. The method according to any one of claims 13 to 15, The digital author or provider / seller, The digital copyright management method of packaging (encrypting and detecting access traces) digital contents through the packager, registering only encryption keys and metadata used for packaging in the clearing house, and managing the packaged digital contents in a database. . The method of claim 16, When packaging the digital content, A license issuing method comprising: setting a license server website link (URL) included in a header to the clearing house together with a content author or a provider / seller. The method of claim 17, The license is Digital data issuing method, characterized in that the data containing the decryption key used to decrypt the encrypted digital content and the content specifying the right (number, duration) of the content. In order to allow illegal copying of digital contents and to prevent illegal use, a digital rights management (DRM) system with a processor, A first function that a digital content copyright holder or provider / seller registers in a clearing house with a digital rights management (DRM) service; A second function of the clearing house notifying the system usage information to the digital content copyright holder or the provider / seller of the DRM service registration; A third function of the digital content author or the provider / seller encrypting the digital content with an encryption key using a packager included in the system usage information, and then registering the encryption key and metadata of the encrypted digital content in the clearing house; A fourth function of, when the user requests to play the content, a player having a DRM function checks whether the license exists, the validity of the license itself, and the right to use the content; According to a result of the investigation of the fourth function, in the case of a valid license, the player decrypts the corresponding digital content provided by the content provider / seller requested by the user using the valid license and presents it to the user in accordance with the right to use. 5 functions; And According to the result of the investigation of the fourth function, if the license does not exist or is an invalid license, after the player enters into a contract for use of the digital content, the player may request issuance of a license to solve the charged digital content. And a sixth function of decrypting the corresponding digital content using a license issued from the clearing house and presenting it to the user according to a right to use. A computer-readable recording medium having recorded thereon a program for realizing this. In order to allow illegal copying of digital contents and to prevent illegal use, a digital rights management (DRM) system with a processor, A first function for the clearinghouse to register a digital content copyright holder or a provider / seller who wishes to receive digital rights management (DRM) services; A second function of notifying the system usage information to the registered digital content copyright holder or the provider / seller of the DRM service; A third function of registering and managing metadata of the digital content encrypted by the clearing house by a packager included in the system use information and an encryption key used when encrypting the digital content by the creator or provider / seller of the digital content; And A fourth function of issuing a license to the user's terminal for the clearing house to interwork with a financial institution to solve the correspondingly charged digital content requested by the user; A computer-readable recording medium having recorded thereon a program for realizing this. The method of claim 20, A fifth function of, when a user requests content playback from a user, a player having a DRM function to check whether a license exists, the validity of the license itself, and the right to use the content; According to a result of the investigation of the fifth function, in the case of a valid license, the player decrypts the corresponding digital content provided by the content provider / seller requested by the user using the valid license and presents it to the user in accordance with the right to use. 6 functions; And If the license does not exist or is an invalid license according to the result of the investigation of the fifth function, after the player enters into a contract for use of the digital content, the player may request issuance of a license to solve the charged digital content. And a seventh function of decrypting the corresponding digital content using a license issued from the clearing house and presenting it to the user according to a right to use. A computer-readable recording medium that records a program for further realization.