KR20070098368A - Method and system for renewal of rights object in drm, and its terminal - Google Patents

Abstract

A method, system, and terminal for updating an RO of DRM contents are provided to automatically update the RO without passing through a browsing session when the RO of the DRM contents are expired. A DRM agent(81) receives additional information used for updating the RO of DRM contents from an RI(Rights Issuer), transfers an RO request message to the RI by using the additional information when the RO is expired, and receives an ROAP(RO Acquisition Protocol) trigger and an RO response message from the RI. A storing part(82) stores the additional information received from the RI. A display part(83) displays information related to RO update. A controller(84) stores the additional information in a storing part, displays the RO update-related information on the display part, and makes the DRM agent transfer the RO request message and receive the RO response message.

Description

METHOD AND SYSTEM FOR RENEWAL OF RIGHTS OBJECT IN DRM, AND ITS TERMINAL}

1 is a block diagram showing a digital rights management system.

2 is a signal flow diagram illustrating a procedure for updating a DRM content usage right according to an embodiment according to the present invention.

3A to 3D illustrate a series of display screens illustrating a DRM content usage right update procedure according to one embodiment of the present invention.

4 illustrates an embodiment in which an element including information to be shown to a user before a ROAP session is applied to a ROAP trigger according to an embodiment of the present invention.

5A and 5B illustrate an example of a usage right response message including a renewalInfo extension according to an embodiment of the present invention.

6 is an embodiment of a ROAP trigger including purchase information according to an embodiment of the present invention.

FIG. 7 illustrates an example of a usage right request message delivered by a DRM agent to an RI, which is a usage right request message including a renewalInfo extension.

8 is a schematic diagram of a terminal according to an embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to digital rights management (hereinafter referred to as DRM), and in particular, when the right of use of predetermined DRM contents (Rights Object: RO) is exhausted, the spent right is automatically renewed. The present invention relates to a method, a system and a terminal for updating a DRM content usage right.

DRM is a system technology for safeguarding and systematically managing the rights to digital contents, and provides a series of protection and management systems for preventing illegal copying of contents and acquiring the right to use the contents, creating and distributing the contents, and using them. do. Such DRM is applied to various applications such as a media player, an audio player, an image viewer, and the like.

1 is a block diagram illustrating a digital rights management system, and the digital rights management system controls the content provider to use the content delivered to the user as much as the usage rights granted to the user. In this case, the content provider is an entity corresponding to a content issuer (CI) and / or a right issuer (RI).

The content issuer (CI) issues protected content (i.e., DRM content) using a specific encryption key to protect the content from users who do not have access rights, and the rights issuer (RI) issues the protected content. Issue the Rights Object (RO) required to use it.

The DRM agent is mounted on a terminal to receive the protected content and the right to use, interprets the license included in the right to use, and converts the protected content into a form that can be used on the terminal. To control.

Here, the right to use the DRM content may include various kinds of restrictions applied when using the DRM content. For example, the right to use the DRM content may be the number or time or duration or system or the like of using the corresponding content. Therefore, when the user has used the DRM content to exhaust the right to use, the user must purchase the right to use the DRM content again in order to continue using the exhausted DRM content. That is, a user accesses a RI portal server through a terminal and browses the rights issuer portal (that is, referred to as a browsing session <browsing session>), and then the DRM content that has been exhausted. After purchasing the right to use the DRM Rights Object Acquisition Protocol (ROP), the purchased right is downloaded to the DRM agent.

However, in order to repurchase the right to use the above, it is necessary to access the right issuer portal and search for the various rights provided by the right portal, so that the user who wants to continue to use the depleted DRM content is required. It is cumbersome and inconvenient. That is, in the conventional DRM system, in order to continue to use the corresponding DRM content that has exhausted the right of use, the user goes through a browsing session every time the right of use of the corresponding DRM content is exhausted, and then uses the exhausted DRM content. There is an inconvenience in using DRM content that requires repurchase of rights.

Accordingly, an object of the present invention is to provide a method, a system, and a terminal capable of automatically updating a right to use without going through a browsing session when the right to use a DRM content is exhausted.

In order to achieve the above object, DRM content usage rights update method according to the present invention, the DRM agent to download a specific DRM content usage rights from RI;

Delivering, by the RI, at least one first additional information to the DRM agent;

Storing, by the DRM agent, the first additional information; And when the specific DRM content use right is exhausted, updating the exhausted use right by the DRM agent using the first additional information.

Preferably, updating the exhausted usage rights comprises: accessing an RI using the stored additional information by the DRM agent;

Downloading, by the DRM agent, a ROAP trigger from the RI;

The DRM agent forwarding a rights request message to the RI;

And the RI downloading the usage right to the DRM agent in response to the usage right request message and delivering a usage right response message including second additional information.

In addition, in order to achieve the above object, the terminal according to the present invention receives additional information to be used to update the right to use a particular DRM content from the RI, when the use rights are exhausted by using the additional information A DRM agent delivering a rights request message to the RI and receiving a ROAP trigger and a rights response message from the RI;

A storage unit for storing additional information received from the RI;

A display for displaying information related to the right to update the license;

Control the DRM agent to store the additional information in the storage unit, to display the usage right update related information on the display, and to forward the usage right request message and to receive the usage right response message. It is characterized by including a control unit for controlling.

In addition, in order to achieve the above object, the DRM system according to the present invention, in the DRM system including at least one or more entities, RI for transmitting additional information and purchase information used for the renewal of the right of use of a specific DRM content Wow;

And receiving the additional information and the purchase information, and updating the exhausted use right by using the additional information and the purchase information when the right to use the specific DRM content is exhausted.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment according to the present invention will be described.

The basic concept of the present invention is that RI additionally provides a DRM agent with a right to use a predetermined DRM content and predetermined information about the right to use, and renews the right to use the predetermined information when the right to use is exhausted. It is. That is, when a user initially purchases a right to use specific DRM content, RI delivers the right to the DRM agent along with the additional information (ie, information for renewing the right) in the right response message. After the DRM agent stores the received additional information for future use, when the right to use the specific DRM content is exhausted, the DRM agent uses the stored additional information to store the additional DRM content. Repurchase (update) of right of use.

2 is a signal flow diagram illustrating a procedure for updating a right to use according to an embodiment of the present invention.

An embodiment of the present invention illustrated in FIG. 2 includes entities configured to include a user, a DRM agent, an RI portal (ie, corresponds to an RI server), and a CI portal (ie, corresponding to a CI server). This is a signal flow between the liver. However, in FIG. 2, the user is not a physical entity, but is illustrated to describe a procedure performed between the user and the DRM agent.

As shown in FIG. 2, according to an embodiment of the present disclosure, a step in which a user downloads specific DRM content (S10), and download additional information to be used in a future update together with a right to use the downloaded specific DRM content Step S20, using the downloaded DRM content to use the specific DRM content (S30), and when the right to use the DRM content is exhausted, updating the right to use again (S40). It consists of.

Hereinafter, an embodiment of the present invention will be described in more detail with reference to FIG. 2 and the accompanying drawings.

The user downloads specific DRM content through the terminal (S10). That is, the user browses and downloads specific content desired by the user through the CI portal through the DRM agent installed in the terminal (S10).

In addition to the right to use the specific DRM content downloaded in step S10, additional information (first additional information) to be used for future use rights is downloaded (S20). In more detail the step (S20), the user accesses the RI portal through the DRM agent in order to purchase the right to use the downloaded specific content (S21 and S22). The RI portal sends a signal to the DRM agent to inquire whether to add the automatic renewal of usage rights (that is, a signal to inquire about whether to automatically repurchase when the user's right to use the DRM content is exhausted) (S23). ). The user checks the automatic right renewal option (for example, "Do you want to renew the right?") Displayed on the display device (e.g., the display) of the terminal and indicates the intention to renew the right (ie, FIG. Indicated as "Yes" in 2. For example, if a user presses a specific key of the terminal to indicate their intention to renew the license (S24), the DRM agent includes a license including an automatic renewal of the license option from the RI portal. Purchase (S25). The DRM agent downloads a ROAP trigger to download the purchased right from the RI portal (S26). In addition, the DRM agent transmits a usage right request message (or RO Request) message (or signal) to the RI portal, and obtains the usage right of the DRM content from the RI portal using the ROAP (S27). While the DRM agent acquires (ie, downloads) the right from the RI portal in step S27, the RI portal receives at least one additional information together with a right response (ie RO Response) message (or signal). Delivering to the DRM agent (S28). In this case, the additional information may not only be included in the RO and transmitted, but may also be delivered together with the RO but separated from the RO. Here, the additional information (that is, the first additional information) is information on updating the right to use the specific DRM content, and includes a URL (Uniform Resource Locator) of the RI server having the right to use and an identifier for the RI. . Detailed description of such additional information will be described later. The DRM agent stores the additional information in a predetermined storage unit for future use (S29).

In operation S10 and S20, the user may download the specific DRM content and the right to use the content, and then use the DRM content until the right of use is exhausted (S30).

In step S30, when the right to use DRM content is exhausted, the right to use is updated (S40). That is, when the right of use is exhausted, the DRM agent may inform the user of the fact that the right of use is exhausted and whether to automatically renew the right of use, for example, through the display of the terminal (S41). At this time, if the user tries to update the exhausted usage right (S42), the DRM agent uses the additional information stored in the previous ROAP session (ie, S25 to S29) and the UR having the exhausted right to use (aka, " triggerURL "(Get on triggerURL) (S43). That is, since the additional information includes the address (ie, URL) of the RI portal where the usage right is located, when the user renews the exhausted usage right, the DRM agent uses the URL of the additional information to use the RI portal. Connect to (i.e. perform HTTP Get on the URL) and download (or read) the usage rights.

The DRM agent downloads the ROAP trigger from the RI portal (S44). In this case, in step S44, the RI portal delivers at least one predetermined information to the DRM agent together with the ROAP trigger. Here, the predetermined information includes purchase information of the right to use the same DRM content and price information of the right to use when the right to use the specific DRM content is exhausted. That is, when the DRM agent downloads the ROAP trigger from the RI portal, if the purchase information and the price information are displayed on the display of the terminal (S45), the user can purchase the right by viewing the purchase information and the price information of the right. There is (S46).

The DRM agent forwards the usage right request message (ie, RO Request) message to the RI portal server (S47), and the RI portal server transfers the usage right to the DRM agent in response to the license request (S48). At this time, in step S48, the RI portal transmits the additional information (second additional information) to the DRM agent by including additional information (second additional information) in the usage right response message (that is, RO response message). The additional information (second additional information) is stored in a predetermined storage unit as in the step S29. Here, the additional information (second additional information) corresponds to information for renewal when the renewed right to use is exhausted again, and thus the additional information described in step S28 (that is, the first additional information). Information) and its nature is the same. In addition, through the step (S40), if the user renews the right to use will be automatically charged to the user.

On the other hand, if the user does not want to update the exhausted right to use in step S42, the right to use renewal procedure (ie, S42 to S48) will not occur. However, the DRM agent will ask the user whether or not to purchase the right to use the specific DRM content on the RI portal, and if the user agrees, the browsing session will be performed.

In the above, the method of updating the DRM content usage right has been described as an embodiment of the present invention with reference to the signal flow diagram of FIG. 2. Hereinafter, the signal flow diagram shown in FIG. 2 will be described with each display screen of the terminal shown in FIGS. 3A to 3D.

3A to 3D illustrate a series of display screens illustrating a DRM content usage right update procedure according to one embodiment of the present invention. However, the display screens shown in FIGS. 3A to 3D illustrate screens of an image viewer capable of displaying predetermined DRM contents.

As shown in FIG. 3A, when the user enters an image viewer screen and wants to use predetermined DRM content (eg, DRM content 1 of two DRM contents in FIG. 3A), the DRM agent may select the content. (That is, the user is informed that the right of use of the DRM content 1) has been exhausted (this corresponds to S41 in FIG. 2). The user confirms that the user has exhausted the right to use the DRM content 1 and updates the right to use (this corresponds to S42 and S43 in FIG. 2).

 As shown in FIG. 3B, the DRM agent downloads a ROAP trigger including purchase information (that is, purchase information corresponding to DRM content 1) (this corresponds to S44 in FIG. 2). The user views the purchase information of the DRM content 1 (that is, the usage right renewal price is $ 10) through the image viewer screen of the terminal and purchases the usage right (ie, renews) (this corresponds to S46 in FIG. 2).

As shown in FIG. 3C, when the user agrees to renew the right to use, the right to use the DRM content 1 is downloaded (or the right to be read is read) (this corresponds to S47 in FIG. 2).

As shown in FIG. 3D, after the DRM agent of the terminal acquires (or updates) the usage right, the user is informed of the preparation for displaying the DRM content 1.

As described above, the procedure illustrated in FIGS. 3A to 3D is related to the step S40 of FIG. 2 and is described based on the interface between the terminal and the user.

Hereinafter, specific technical means for implementing one embodiment of the present invention shown in FIG. 2 will be described. That is, in order to implement the method of updating the DRM content according to the present invention shown in FIG. 2, a new extension is required in the RO request message and the RO response message. The extension is called an "renewalInfo" extension and is a kind of parameter.

The extension (ie renewalInfo) includes two elements, "tiggerURL" and "idCode". First, the "tiggerURL" is a kind of URL. If the user agrees to auto-renew certain usage rights, the RI sends the URL (ie tirggerURL) to the DRM agent. Next, the "idCode" is a string type element. The value of such an element (i.e. the value of idCode) is an identifier for RI, i.e. the identifier of a previous license (ie the currently exhausted license) that the user has downloaded in a previous transaction. Acts as. That is, the element (ie idCode) is used by the RI to map the same usage rights as the usage rights (ie exhausted usage rights) that the user purchased in the previous transaction. When the right of use is re-purchased after the right of use has been exhausted, the DRM agent transmits the element (ie, idCode) to the RI by including it in a RO Request message. The RI then uses the element (ie idCode) to map the usage rights that the user wants to update.

Meanwhile, the above-described two elements (ie, extensions) correspond to additional information added to a RO Response message in the above steps (ie, S28 and S48 in FIG. 2) of FIG. 2. In more detail, if an RI includes the extension in a rights response message and delivers it to the DRM agent, the DRM agent must store this information (ie, the extension) for future use (ie, for example, FIG. 2). Corresponds to S29). While the information (i.e. two elements as the extension) is stored, the DRM agent checks whether it has the "renewalInfo" extension stored at the previous transaction. When the right to use a particular DRM content is exhausted, the DRM agent confirms that the information (ie renewalInfo extension) is stored, and the DRM agent asks the user if it wants to renew the exhausted right (ie, Corresponds to S41 in FIG. 2).

If the user agrees to renew the usage rights, the DRM agent sends a predetermined request (eg, an HTTP GET request) to the stored tiggerURL (ie, the address of the RI server) from the previous transaction (ie, in FIG. 2). Corresponds to S43). The RI server then forwards the ROAP trigger to the DRM agent, allowing the DRM agent to download the specific usage rights exhausted using the ROAP trigger (ie, corresponding to S44 in FIG. 2). At this time, the RI server delivers the purchase information related to the renewal of the usage right together with the ROAP trigger. If the user confirms the purchase information and agrees to renew the usage right, the DRM agent includes the renewalInfo extension in the RO request message and delivers it to the RI server (ie, corresponds to S47 in FIG. 2). After receiving the renewalInfo extension from the DRM agent, the RI charges the user for the renewal of the right to use and transfers the right to the DRM agent.

Hereinafter, an embodiment in which the above extension is applied to an actual message will be described.

The newly defined tag is added to all registration, RO Acquisition, Join Domain and Leave Domain Trigger schema's. Using this newly defined element (i.e. new tag), the RI can pass certain information to the DRM agent, i.e. the information that the DRM agent shows to the user before proceeding with the ROAP session (e.g., renewal price of the right, etc.) Can be. The element schema is as follows.

<element name = " userAlert "type =" string " minOccurs = "0" />

4 illustrates an embodiment in which a newly defined element (ie, a tag) is applied to a ROAP trigger as described above. However, in FIG. 4, the broken lines correspond to the newly added tags.

Meanwhile, the new extensions added to the right request message and the right response message are as follows.

< complexType  name = " roRenewalInfo ">

     < complexContent >

         <extension base = " roap : Extensions>

             <element name = "t riggerURL "type =" anyURL " minOccurs = "0">

             <element name = " idCode "type =" string ">

         </ extension>

    < complexContent >

</ complexType >

The newly defined extension is defined as "roRenewalInfo" and added to the ROAP.

Meanwhile, an embodiment of the ROAP extension applied to the usage right response message is as follows.

<extension xsi : type = " roap : roRenewalInfo ">

< triggerURL > http://riurl.com/renewalTrigger?id=100 </ triggerURL >

< idCode > roid -123456 </ idCode  >

</ extension>

5A and 5B illustrate an example of a usage right response message including a renewalInfo extension. 5A and 5B show one usage right response message, and the underlined part is a new extension.

6 is an embodiment of a ROAP trigger including purchase information according to an embodiment of the present invention. However, the underlined part in FIG. 5 is a new addition tag. The message shown in FIG. 6 is related to the step S44 of FIG.

FIG. 7 illustrates an example of a usage right request message delivered by a DRM agent to an RI, which is a usage right request message including a renewalInfo extension. However, the underlined part in FIG. 5 is a new extension (or tag). The message shown in FIG. 7 is related to the step S47 of FIG.

8 is a schematic diagram of a terminal according to an embodiment of the present invention.

As shown in FIG. 8, the terminal 80 according to the present invention includes a DRM agent 81, a storage 82, a display 83, and a controller 84. However, the terminal 80 according to the present invention shown in FIG. 8 shows only the configuration having the main technical features of the terminal 80. Thus, although not shown in Figure 8 includes all the configuration of a typical terminal. In addition, the terminal 80 according to the present invention includes all wired and wireless terminals capable of using the DRM service. For example, the terminal device 80 according to the present invention includes a mobile communication terminal, an MP3, a notebook computer, a desktop PC, a game machine, and other home appliances.

The functions and operations of the terminal 80 illustrated in FIG. 8 are the same as those described above with reference to FIGS. 2 to 7. Therefore, detailed description is omitted in order to maintain the brevity of the description of the present invention. However, briefly described the main technical features of each component of the terminal 80 according to the present invention.

The DRM agent 81 operates as follows: Receive additional information from the RI to be used for updating a specific DRM content usage right according to a predetermined control signal of the control unit 84; Forwarding the usage right request message to the RI by using the additional information when the usage right is exhausted; And a ROAP trigger and usage rights response message is received from the RI.

The storage unit 82 stores additional information received from the RI according to a predetermined control signal of the controller 84.

The display 83 displays the information related to the right to use, for example, the purchase information of the right to be updated, according to a predetermined control signal of the control unit 84 so that the user can check.

The control unit 84 operates as follows: control to store the additional information in the storage unit 82; Control to display the usage right update related information on the display (83); The DRM agent 81 controls the DRM agent 81 to transmit the usage right request message and to receive the usage right response message.

The present invention has been described above with reference to the embodiments shown in the drawings of the present invention, but this is merely exemplary and various modifications and equivalent other embodiments may be made by those skilled in the art. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, through the DRM content usage right updating method, system, and terminal according to the present invention, a user needs to visit RI's portal and purchase the right to use the DRM content even if the right to use the predetermined DRM content is exhausted. none. That is, when the right to use a given DRM content is exhausted, it is not necessary to perform a browsing session in order to purchase the used right. Therefore, the present invention can provide the user with convenience in using the DRM content since the DRM content can be continuously used after automatically updating the used right.

Claims (40)

Downloading, by the DRM agent, specific DRM content usage rights from the RI; Delivering, by the RI, at least one first additional information to the DRM agent; Storing, by the DRM agent, the first additional information; And updating the exhausted usage right by the DRM agent by using the first additional information when the specific DRM content usage right is exhausted. The method of claim 1, wherein the first additional information is The DRM content usage rights update method, which is included in the usage rights response message. The method of claim 1, wherein the first additional information is DRM content usage rights update method, characterized in that delivered in the specific DRM content usage rights included. The method of claim 1, wherein the first additional information is DRM content usage rights update method, characterized in that delivered separately with the use rights separately from the specific DRM content usage rights. The method of claim 1, wherein the first additional information is A method of updating DRM content usage rights comprising at least one element. The method of claim 1, wherein the first additional information is An element pointing to the URL of the RI, And an element indicating an identifier for the RI. The method of claim 6, wherein the element indicating the URL of the RI triggerURL, The element indicating the identifier of the RI is a string type idCode, characterized in that for updating the DRM content usage rights. The method of claim 1, wherein the first additional information is A method for updating the rights of a DRM content, which is included in a newly defined extension or a newly defined tag in a rights response message. The method of claim 1, wherein when the DRM agent tries to download a right to use the specific DRM content, And transmitting a predetermined option for inquiring whether the RI is to renew when the RI is exhausted. The method of claim 1, wherein updating the exhausted right of use, Accessing an RI by the DRM agent using the stored additional information; Downloading, by the DRM agent, a ROAP trigger from the RI; The DRM agent forwarding a rights request message to the RI; The RI downloads the right to use the DRM agent in response to the right request message; And transmitting a usage right response message including the second additional information. The method of claim 10, wherein the DRM agent is The method of claim 1, further comprising informing a user that the right of use of the specific DRM agent has been exhausted. The method of claim 10, wherein the ROAP trigger is How to update the right to use DRM content, including the degree of purchase. The method of claim 12, wherein the purchase information is The DRM content usage rights update method, characterized in that notified to the user by the DRM agent. The method of claim 12, wherein the purchase information is And a renewal price of the usage right to be renewed. The method of claim 10, wherein the right to request message And an identifier for the RI. The method of claim 15, wherein the identifier for the RI is And an idCode element among the first additional information. The method of claim 16, wherein the idCode element, DRM content usage rights update method, characterized in that used by the RI to map the exhausted usage rights purchased in a previous transaction. The method of claim 10, wherein the second additional information And when the renewed usage right is exhausted again, used to renew the exhausted usage right again. The method of claim 10, wherein the second additional information The DRM content usage right updating method having the same characteristics as the first additional information. The method of claim 10, wherein the DRM agent is And storing the second additional information. Receive additional information from RI to be used to renew the right to use certain DRM Content; When the right of use is exhausted, forwarding the right request message to the RI by using the additional information; and A DRM agent receiving a ROAP trigger and a rights response message from the RI; A storage unit for storing additional information received from the RI; A display for displaying information related to the right to update the license; Control to store the additional information in the storage unit, Control to display the usage right update related information on the display; And a control unit which controls the DRM agent to transmit the usage right request message and to receive the usage right response message. The method of claim 21, wherein the additional information And a terminal included in the usage right response message. The method of claim 21, wherein the additional information And a terminal included in the specific DRM content usage right. The method of claim 21, wherein the additional information And a terminal provided separately from the specific DRM content usage right, and transmitted with the usage right. The method of claim 21, wherein the additional information And at least one element. The method of claim 21, wherein the additional information An element pointing to the URL of the RI, And an element indicating an identifier for the RI. 27. The method of claim 26, wherein the element indicating the URL of the RI is triggerURL, The element indicating the identifier of the RI is a string type, characterized in that the idCode. The method of claim 21, wherein the additional information And a terminal, which is included in a newly defined extension or a newly defined tag and delivered in a rights response message. The display of claim 21, wherein the display is Terminal for displaying the purchase information for the right to use. The method of claim 29, wherein the purchase information Terminal included in the ROAP trigger and delivered. In the DRM system including at least one entity, An RI for transmitting additional information and purchase information used to update a right to use specific DRM contents; Receiving the additional information and the purchase information, And a DRM agent for updating the exhausted use right by using the additional information and the purchase information when the right to use the specific DRM content is exhausted. 32. The method of claim 31 wherein the RI is DRM system, characterized in that the purchase information included in the ROAP trigger delivered to the DRM agent. 32. The method of claim 31 wherein the RI is And when the DRM agent attempts to download the right to use the specific DRM content, delivers a predetermined option for inquiring whether to renew the right to use when the right to use is exhausted. 32. The method of claim 31 wherein the RI is DRM system, characterized in that the additional information is included in the usage rights response message and delivered to the DRM agent. 32. The method of claim 31 wherein the RI is And transmitting the additional information in the specific DRM content usage right. 32. The method of claim 31 wherein the RI is And transmitting the additional information together with the right of use separately from the right to use the specific DRM content. 32. The method of claim 31 wherein the RI is And transmitting the additional information by including the at least one element. 32. The method of claim 31 wherein the RI is An element indicating the additional information URL of the RI; And an element indicating the identifier of the RI. The element of claim 38, wherein the element indicating the URL of the RI is: triggerURL, And an element indicating the identifier of the RI is idCode as a string type. 32. The method of claim 31 wherein the RI is And the additional information is included in a newly defined extension or a newly defined tag in the rights response message.

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