KR20100091505A - Method for conditional access of set top box using smart card - Google Patents

Method for conditional access of set top box using smart card Download PDF

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Publication number
KR20100091505A
KR20100091505A KR1020090010723A KR20090010723A KR20100091505A KR 20100091505 A KR20100091505 A KR 20100091505A KR 1020090010723 A KR1020090010723 A KR 1020090010723A KR 20090010723 A KR20090010723 A KR 20090010723A KR 20100091505 A KR20100091505 A KR 20100091505A
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KR
South Korea
Prior art keywords
smart card
cas application
top box
service provider
broadcast service
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KR1020090010723A
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Korean (ko)
Inventor
김진호
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주식회사 하이스마텍
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Priority to KR1020090010723A priority Critical patent/KR20100091505A/en
Publication of KR20100091505A publication Critical patent/KR20100091505A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G06F21/12—Protecting executable software
    • G06F21/121—Restricting unauthorised execution of programs
    • G06F21/123—Restricting unauthorised execution of programs by using dedicated hardware, e.g. dongles, smart cards, cryptographic processors, global positioning systems [GPS] devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card

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  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Technology Law (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

PURPOSE: A conditional access method of a set top box using a smart card for using a CAS application used in a broadcast service provider is provided to use the CAS application without changing the set top box by storing the CAS application inside the smart card. CONSTITUTION: A user requests an audition service to a broadcasting service provider server by using smart card identifying information(S100). The smart card installs the CAS application corresponding to the broadcast service offering server by using a card manager file and a card manager key(S200). The broadcast service offering server permits use and release by using ID information of the CAS application(S300).

Description

Restriction method of set top box using smart card {Method for conditional access of set top box using smart card}

The present invention relates to a method of restricting reception of a set-top box using a smart card, and stores a CAS application in a smart card to allow only a user who is allowed to receive a broadcast from a broadcast service provider to change the set-top box. The present invention relates to a method of restricting reception of a set-top box using a smart card that increases user convenience by using a CAS application used by the broadcast service provider.

Recently, with the development of digital technology and increasing consumer demand for multi-channel, multi-media, high-speed, and diversified services, the introduction of digital broadcasting and communication services has been spreading. Among these, the set top box is the most representative example.

A set-top box is an external device that adds a function to use an Internet service from an existing analog device such as a television. The set-top box includes a microprocessor (CPU), a memory, an Internet connection module, a wired / wireless keyboard and a remote controller. . Accordingly, the set-top box provides an internet search function, an e-mail function, and an internet phone function, thereby enabling high quality and high quality broadcasting and interactive service.

The set-top box stores each application for providing such a function in an internal memory, and provides the corresponding function to the user by driving the application corresponding to the corresponding function when the user uses the specific function.

In particular, when a broadcast service provider provides paid content among various functions provided by the set-top box, a user reception restriction function is provided so that only subscribers allowed to receive the broadcast content from the broadcast service provider are provided with the paid content. In addition, it includes a reception limit application (hereinafter referred to as a CAS (Conditional Access System) application) that provides such a function in the internal memory.

However, since CAS applications used by different broadcasters are different, when a user changes a broadcast service provider, a CAS application that performs a reception restriction function must also be changed.

However, since the CAS application corresponding to the broadcasting company is fixed in the set-top box installed in the user's home, when the user changes the broadcasting service provider, the CAS application must be changed to the set-top box equipped with the CAS application corresponding to the broadcasting service provider. A problem occurred.

It is an object of the present invention to provide a method for limiting reception of a set-top box using a smart card that can easily install or delete a CAS application corresponding to a broadcast service to be watched on a smart card. .

In order to achieve the above object, the method of limiting the reception of a set-top box using a smart card according to the present invention is a method of restricting the reception of a set-top box in which a user receives digital broadcasting in a limited manner, wherein the user uses smart card identification information. A first step of requesting a viewing service to a broadcasting service provider server to be viewed; A second step in which the smart card installs a conditional access system (CAS) application corresponding to the broadcast service provider server using a card manager file or a card manager key; and the broadcast service provider server uses ID information of the installed CAS application. The third step is to authorize use and termination.

Restriction reception method of a set-top box using a smart card according to a feature of the present invention comprises the first-first step of the smart card receiving and installing the card manager file from the smart card owner server; After the card manager file is installed, the broadcast service provider server receives a token corresponding to the card manager file and checks whether the installation file of the CAS application in the smart card exists; If the installation file of the CAS application in the smart card does not exist, the broadcast service provider server may include a second step including a step 1-3 of transmitting and installing the CAS application installation file to the smart card. .

Particularly, in the method of limiting reception of a set-top box using a smart card according to an aspect of the present invention, if there is an installation file of a CAS application in the smart card, the installed file is compared with the file to be transmitted. The method may further include steps 1-2 of deleting the CAS application installed in the card.

Restriction receiving method of a set-top box using a smart card according to a feature of the present invention further comprises the step 2-1 of the set-top box to confirm the card manager key authentication of the smart card; A step 2-2 of the set-top box checking the card manager key authentication and then transmitting a card manager key authentication confirmation message to the broadcast service provider server; Step 2-3 of the set-top box checking whether the installation file of the CAS application in the smart card exists and if the installation file of the CAS application in the smart card does not exist, the set-top box from the broadcast service provider server. Receiving a CAS application installation file may include a second step comprising a step 2-4 of installing the CAS application in the smart card.

Particularly, in the method of limiting reception of a set-top box using a smart card according to an aspect of the present invention, if there is an installation file of a CAS application in the smart card, the installed file is compared with the file to be transmitted. The method may further include a 2-3 process of deleting the CAS application installed in the card.

In particular, in the method of limiting reception of a set-top box using a smart card according to an aspect of the present invention, after the set-top box checks whether the CAS application is installed in the memory of the smart card, the CAS application installation confirmation message is sent to the broadcast service provider server. The method may further include a second to fourth process of transmitting.

Restriction receiving method of a set-top box using a smart card according to a feature of the present invention comprises the steps 3-1 of the broadcast service provider server performs the authentication check for the CAS application installed in the smart card; Step 3-2, wherein the broadcast service provider encrypts the public key using the operational key, and the smart card decrypts the operational key using the encrypted public key to verify the operational key. And a third step of service authentication including a third to third process of transmitting a CAS application activation message for the installed CAS application to the smart card.

In particular, in the method of limiting reception of a set-top box using a smart card according to a feature of the present invention, the broadcast service provider server verifies authentication using at least one of an initial key, a password, and unique data included in a CAS application installed in the smart card. It may include the 3-1 process of performing.

More preferably, the method for limiting reception of a set-top box using a smart card according to an aspect of the present invention further includes steps 3-4 in which the broadcast service provider transmits a CAS application deactivation message for the installed CAS application to the smart card. The third step may include termination of service.

In particular, the method of limiting the reception of a set-top box using a smart card according to a feature of the present invention, after the smart card receives a CAS application deactivation message, among the operation keys, passwords, and unique data included in ID information of the installed CAS application. The method may further include steps 3-4 of deleting at least one.

As described above, even if the user changes the broadcast service provider by replacing or setting up a CAS application in a smart card, the CAS application allowing only the user who has allowed the broadcast service to receive the digital broadcast can be replaced. Since it is possible to receive a desired broadcast service without the need, there is an effect that can improve user convenience and use efficiency of the set-top box.

Examples of a method and a system for restricting reception of a set-top box using a smart card according to the present invention can be variously applied. Hereinafter, exemplary embodiments will be described with reference to the accompanying drawings.

1 is a block diagram of a system for limiting reception of a set-top box using a smart card according to an embodiment of the present invention. Referring to Figure 1, briefly look at the digital broadcast viewing process through the set-top box as follows.

The broadcast service provider 100 transmits a video signal to the set-top box 200 installed in the user's home. In this case, the broadcast service provider 100 includes an operation key generation unit 120, an operation key encryption unit 130, a scrambler 110, and a transmission unit 160.

The video signal is encrypted by the scrambler 110 using an operation key generated from an operation key generator 120 included in the broadcast service provider 100, and the encrypted video signal is converted into the set top. Send to box 200.

In addition, the operation key encryption unit 130 included in the broadcast service provider 100 encrypts the operation key generated by the operation key generation unit 120, and transmits the encrypted operation key to the set-top box 200. do.

In addition, the broadcast service provider 100 further includes a subscriber management unit 140 and a subscriber authentication unit 150 to perform a user authentication verification, and transmit a subscription authentication confirmation message to the set-top box 200. do.

The set top box 200 receives an encrypted video signal, an encrypted operation key, and a subscriber authentication confirmation message from the broadcast service provider 100 through the receiver 240.

The set top box 200 decrypts the received encrypted video signal including the receiver 210, the descrambler 220, and the CAS agent 230. In order to perform the decryption process, the CAS agent 230 receives an encrypted operational key and a subscriber authentication confirmation message transmitted from the broadcast service provider 100, decrypts the encrypted operational key, and decrypts the decrypted operational key. Is transmitted to the descrambler 220.

At this time, the CAS agent 230 does not store the CAS application used by the broadcast service provider 100 to be used therein, but stores it in the memory of the smart card 300 connected through an external interface slot.

Therefore, when the CAS agent 230 intends to use the CAS application, the CAS agent 230 receives and installs the CAS application from the smart card 300 connected to the CAS agent 230.

Hereinafter, a method of limiting reception of a set-top box using a smart card according to an embodiment of the present invention will be described with reference to FIG. 2.

As shown in FIG. 2, in a method of restricting reception of a set-top box using a smart card, a user requests a viewing service from a broadcasting service provider 100 to be watched by a user (S100).

For example, the set-top box displays a broadcast service application selection screen to the user. The set-top box receiving the service request displays a list of each broadcast service provider capable of broadcasting services to the user, and receives one of the broadcast service providers selected from the list of broadcast service providers displayed by the user.

Thereafter, the set-top box receives the personal information by displaying a user personal information input screen in order to perform a service opening request to the broadcast service provider selected by the user. At this time, the personal information is preferably at least one of a user name, telephone number, social security number, public certificate password. After receiving the personal information, the set-top box transmits at least one of the unique information of the set-top box, the serial number of the smart card, and the user's personal information to the corresponding broadcasting service provider selected by the user.

After installing the CAS application used by the broadcast service provider 100 in the smart card 300 connected to the set-top box 200 (S200), the broadcast service provider 100 installed in the smart card 300 CAS Allow use of the application (S300).

Hereinafter, the performance of each step will be described in more detail with reference to the accompanying drawings. 3 to 6 are data flow diagrams in a step of installing a CAS application used by a broadcast service provider in a smart card connected to a set top box in a method of restricting reception of a set top box using a smart card according to an embodiment of the present invention.

(Embodiment 1)

Hereinafter, the first embodiment will be described with reference to FIG. 3.

As shown in FIG. 3, before the smart card 300 receives and installs the CAS application from the broadcast service provider 100, a process of checking whether the smart card is allowed to use the memory is performed.

First, a company that provides the smart card 300, that is, the card owner 400 of the smart card 300 is a smart card 300 connected to the set-top box 200 CAS in the memory in the smart card 300 Transfer the Delegated Manager file to enable application installation.

After the smart card 300 confirms the reception of the card manager file transmitted from the card owner 400, the smart card 300 transmits an acknowledgment response message to the card owner 400 again.

When the card owner receives an acknowledgment message from the smart card, the card manager sends an installation instruction message of the card manager file to the smart card 300, and the card manager file is stored in the internal memory of the smart card 300. To be installed.

When the smart card 300 completes the installation of the card manager file by receiving the installation instruction message of the card manager file from the card owner 400, and checks the completion of the card manager file installation to the card owner 400 again Send a message.

As a result, the card owner 400 confirming the installation completion of the card manager file on the smart card 300 transmits a token for the card manager file to the broadcast service provider 100, thereby transmitting the smart card 300. Report the installation readiness status of the CAS application.

As such, the broadcast service provider 100 that reports the completion state of the CAS application installation preparation in the smart card 300 is CAS to the smart card 300 to check whether the CAS application in the memory of the smart card 300 exists. Send the drive message for the application.

The smart card 300 receiving the driving message of the CAS application checks whether the CAS application is stored in an internal memory, drives the CAS application if the CAS application is stored, and broadcasts a response message including a driving success message. Send to the service provider 100. If the CAS application is not stored in the smart card 300, a response message including a driving failure message is transmitted to the broadcast service provider 100.

The broadcast service provider 100 receiving the response message for the CAS application driving message from the smart card 300 transmits the CAS application installation file for installing the CAS application to the smart card 300.

On the other hand, the smart card confirms that the CAS application installation file reception completion, and transmits an acknowledgment response message.

The broadcast service provider 100 confirming completion of the transmission of the CAS application installation file in the smart card 300 through the CAS application installation file acknowledgment response message received from the smart card 300 installs the installation file for the CAS application. Send an instruction message to the smart card (300).

The smart card 300 receives the installation instruction message of the installation file for the CAS application, completes the installation of the installation file for the CAS application, and transmits a response message including the installation completion confirmation message to the broadcaster. .

As a result, the CAS application installation file may be received from the broadcast service provider 100 and the CAS application may be installed in the memory unit of the smart card 300 connected through the interface slot with the set-top box 200.

In the first embodiment, in addition to the method for storing the new CAS application in the smart card 300, the updating process of the CAS application already stored in the smart card 300 may be similarly described.

Looking at the update process of the CAS application through Figure 4 as follows. As shown in Figure 4, to install the card manager file from the card owner of the smart card to look after the CAS application installation ready.

The broadcast service provider 100 receives a token for a card manager file from the card owner 400, determines that the smart card 300 is ready to install a CAS application, and then sends it to the smart card 300. Send a drive message for the CAS application.

After the smart card 300 receives the driving message, if the CAS application exists in the smart card 300, the smart card 300 includes the presence of a CAS application to the broadcast service provider 100. To transmit the response message to the broadcast service provider 100.

Accordingly, the broadcast service provider 100 determines whether there is a CAS application in the smart card 300 in response to the received response message. When determining that the CAS application exists in the response message received by the broadcast service provider 100, the deletion message for the CAS application is transmitted to the smart card 300. The smart card 300 receiving the deletion message deletes the CAS application stored in the memory, and transmits the deletion confirmation message to the broadcast service provider 100 again.

Accordingly, the deletion of the CAS application pre-installed in the memory of the smart card 300 is made, and after receiving the installation file for a new CAS application from the broadcast service provider 100 to the memory of the smart card 300 By storing the installation file, an update to the CAS application is performed.

Alternatively, in addition to the CAS application installation process using the card manager file, the CAS application may be installed using the CAS application installation process using the card manager key.

Hereinafter, a process of installing a CAS application using a card manager key will be described with reference to FIG. 5.

(Second Embodiment)

First, the set-top box 200 transmits a card manager key authentication message to the smart card 300 whether a card manager key for the smart card 300 exists. At this time, the card manager key includes a security domain key.

The smart card 300 receives a card manager key authentication message and transmits a response message including the card manager key authentication to the set-top box 200. In this case, the response message includes the same key as the security domain key.

Accordingly, the set-top box 200 transmits a card manager key authentication confirmation message to the broadcast service provider 100 in response to the received response message.

The set-top box 200 transmits a card manager key authentication confirmation message to the broadcast service provider 100, and then transmits a CAS application driving message to the smart card 300. The smart card 300 receiving the CAS application driving message checks whether the CAS application is driven in the memory, and transmits a response message including the driving to the set-top box 200.

The set top box 200 receives a response message from the smart card 300, and then transmits a CAS application installation file request message to the broadcast service provider 100 to receive an installation file for the CAS application.

After receiving the CAS application installation file request message, the broadcast service provider 100 transmits the CAS application installation file to the set-top box 200.

Therefore, the set top box 200 transmits and installs the CAS application installation file received from the broadcast service provider 100 to the smart card 300.

After the set-top box 200 transmits the CAS application installation file, when the set-top box 200 receives a response message including an installation confirmation message of the CAS application installation file from the smart card 300, the CAS application installation confirmation is performed by the broadcast service provider 100. Send a message.

Thus, without installing the card manager file from the card owner 400 of the smart card 300 in the smart card 300, the CAS application installation file from the broadcast service provider 100 through a simple card manager key authentication Received can be installed on the smart card (300).

In the second embodiment, in addition to the method for storing the new CAS application in the smart card, the updating process of the CAS application already stored in the smart card may be similarly performed.

Looking at the update process of the CAS application through Figure 6 as follows. As shown in FIG. 6, card manager key authentication is performed between the set top box and the smart card, and the process after receiving the response message for the CAS application driving message transmitted to the smart card by the set top box is described. do.

The set-top box 200 receives a response message for the CAS application driving message from the smart card 300 to determine whether there is a CAS application installed in the smart card 300.

If it is determined that an installation file of a CAS application in the smart card 300 exists, a message for deleting an installation file of the CAS application is transmitted to the smart card 300.

In response to the installation file deletion message of the CAS application received by the smart card 300, after deleting the installation file of the CAS application stored in the memory of the smart card 300, the response message containing the deletion complete message Transfer to the set-top box 200.

Accordingly, the deletion of the CAS application pre-installed in the memory of the smart card 300 is made, and after receiving the installation file for a new CAS application from the broadcast service provider 100 to the memory of the smart card 300 By storing the installation file, an update to the CAS application is performed.

As described above, the method of limiting the reception of the set-top box using the present inventors smart card by using the card manager file or the card manager key to install the CAS application on the smart card, the CAS application installed in the smart card 300 Applying for registration to the broadcast service provider 100 performs the step of receiving the CAS application permission.

Hereinafter, referring to FIG. 7, the license of the CAS application installed in the smart card will be described in detail.

As shown in FIG. 7, the broadcast service provider transmits the CAS application driving message to the smart card, and then checks whether the CAS application installed as in the above-described first or second embodiment is driven through the received response message. do.

The broadcast service provider 100 confirming the driving of the CAS application transmits an authentication confirmation message for verifying authentication of the CAS application to the smart card 300. At this time, the authentication confirmation message may include at least one of the initial key, password, viewing rights for the CAS application installed in the smart card (300).

The broadcast service provider 100 confirms the authentication of the smart card 300 connected to the set-top box 200 through a response message including an authentication confirmation message sent to the smart card 300.

The broadcast service provider 100 transmits a public key to the smart card 300 after confirming the authentication of the smart card 300, and the smart card 300 is authorized for the installed CAS application. The key is transmitted to the broadcast service provider 100.

The broadcast service provider 100 encrypts an operation key generated inside the broadcast service provider 100 using the public key and transmits the encrypted operation key to the smart card 300.

The smart card 300 decrypts the received encrypted operating key again, and transmits the decrypted operating key to the broadcast service provider 100.

Accordingly, the broadcast service provider 100 checks whether the CAS application is normal by comparing the operation key before encryption with the operation key received from the smart card 300.

The broadcast service provider 100 confirming the normality of the CAS application transmits a CAS application activation message allowing the use of the CAS application to the smart card 300. In response to the CAS application activation message received by the smart card 300, after activating the installed CAS application, and transmits a response message including the activation confirmation back to the broadcast service provider (100).

Thus, by activating the CAS application installed on the smart card 300 connected through the interface with the set-top box 200, the use of the broadcast service provider 100 of the installed CAS application is licensed, using the CAS application set-top box ( 200 may receive the digital broadcast.

Alternatively, as the user changes the broadcaster to watch through the reception restriction method of the set-top box using the smart card of the present invention, the CAS application used by the broadcaster before the change may be terminated.

FIG. 8 is a flowchart illustrating a data flow when a CAS application is used in a method of restricting reception of a set-top box using a smart card according to another embodiment of the present invention.

As shown in FIG. 8, the broadcast service provider 100 transmits a CAS application driving message to the smart card 300 to confirm whether the CAS application is installed through a response message for the CAS application driving message.

The broadcast service provider 100 confirming installation of the CAS application transmits an operation key authentication message to the smart card 300 to perform an operation key authentication of the CAS application installed in the smart card 300.

The broadcast service provider 100 receives a response message for the operation key authentication message from the smart card 300, and determines whether the CAS application corresponding to the broadcast service provider 100 through the response message.

When the broadcast service provider 100 determines that the CAS application installed in the smart card 300 is a CAS application corresponding to the broadcast service provider 100, the broadcast service provider 100 transmits a CAS application deactivation message to the smart card 300.

The smart card 300 receiving the CAS application deactivation message deletes an operation key, a password, a usage right, and unique data for a CAS application installed in an internal memory.

The smart card 300 transmits a response message including the deletion confirmation to the broadcast service provider 100 after the deletion of the operation key, the password, the use right and the unique data.

As a result, the broadcast service provider 100 may be permitted to use the CAS application installed in the smart card 300 connected to the set-top box 200.

In other words, a CAS application is stored in a smart card so that only a user who has allowed the broadcast service to receive a digital broadcast is stored in the smart card so that the broadcast service provider does not replace the set-top box even if the user changes the broadcast service construction. By using the CAS application to be used, the convenience of the user can be increased.

In addition, when the user changes the broadcast service provider, the reception restriction of the digital broadcasting can be used without changing the set top box, so that the use efficiency of the set top box can be increased.

The reception limiting method of the set-top box using the smart card according to the present invention has been described above. Such technical configuration of the present invention can be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the embodiments described above are intended to be illustrative in all respects and not to be considered as limiting, and the scope of the present invention is indicated by the following claims rather than the foregoing description, and the meanings of the claims and All changes or modifications derived from the scope and the equivalent concept should be construed as being included in the scope of the present invention.

1 is a block diagram of a system for limiting reception of a set-top box using a smart card according to an embodiment of the present invention,

2 is a flowchart of a method of restricting reception of a set-top box using a smart card according to an embodiment of the present invention.

3 is a data flow diagram when installing a CAS application in a method of restricting reception of a set-top box using a smart card according to an embodiment of the present invention,

4 is a data flow diagram when installing a CAS application in a method of restricting reception of a set-top box using a smart card according to another embodiment of the present invention.

5 is a data flow diagram when installing a CAS application in a method of restricting reception of a set-top box using a smart card according to another embodiment of the present invention,

6 is a data flow diagram when installing a CAS application in a method of restricting reception of a set-top box using a smart card according to another embodiment of the present invention.

7 is a data flow diagram when a CAS application is licensed in a reception limit method of a set-top box using a smart card according to an embodiment of the present invention.

8 is a data flow diagram when a CAS application is used in a reception limit method of a set-top box using a smart card according to another embodiment of the present invention.

*** Explanation of symbols for main parts of drawing ***

100: broadcast service provider 200: set-top box

300: smart card

Claims (10)

In a method of restricting reception of a set-top box in which a user receives digital broadcasting on a limited basis, A first step of requesting a viewing service from a broadcasting service provider server that a user wants to watch using smart card identification information; A second step of installing, by the smart card, a conditional access system (CAS) application corresponding to the broadcasting service provider server using a card manager file or a card manager key; And a third step of allowing the broadcast service provider server to permit use and termination using the ID information of the installed CAS application. The method of claim 1, The second step is Step 1-1, wherein the smart card receives and installs the card manager file from a smart card owner server; Step 1-2 after the card manager file is installed, the broadcast service provider server receives a token corresponding to the card manager file and checks whether an installation file of a CAS application in the smart card exists. And If the installation file of the CAS application in the smart card does not exist, the smart card, characterized in that the broadcast service provider server comprises a step 1-3 of transmitting and installing the CAS application installation file to the smart card; Restriction method of using set-top box. The method of claim 2, Step 1-2 is If there is an installation file of the CAS application in the smart card, comparing the installed file and the file to be transmitted, if not the same, and further comprising the step of deleting the CAS application installed in the smart card Restriction method of the set-top box using. The method of claim 1, The second step is Step 2-1 of the set-top box confirming card manager key authentication of the smart card; A step 2-2 of the set-top box checking the card manager key authentication and then transmitting a card manager key authentication confirmation message to the broadcast service provider server; Step 2-3 of the set-top box to check whether the installation file of the CAS application in the smart card exists; If the installation file of the CAS application in the smart card does not exist, the set-top box includes a step 2-4 of receiving the CAS application installation file from the broadcast service provider server to install the CAS application in the smart card Restriction method of the set-top box using a smart card characterized in that. The method of claim 4, wherein Steps 2-3 are If there is an installation file of the CAS application in the smart card, comparing the installed file and the file to be transmitted, if not the same, and further comprising the step of deleting the CAS application installed in the smart card Restriction method of the set-top box using. The method of claim 5, The smart card, characterized in that the set-top box further comprises a step 2-4 of confirming that the CAS application is installed in the memory in the smart card, and transmits the CAS application installation confirmation message to the broadcast service provider server. Restriction method of set-top box using this. The method of claim 1, The service authentication of the third step is Step 3-1 of performing, by the broadcast service provider server, an authentication check on the CAS application installed in the smart card; Step 3-2, wherein the broadcasting service provider encrypts the public key using the operational key, and the smart card decrypts the operational key using the encrypted public key to verify the operational key. And a third process of the broadcast service provider server transmitting a CAS application activation message for the installed CAS application to the smart card. The method of claim 7, wherein Step 3-1 is Restriction receiving method of the set-top box using a smart card, characterized in that the broadcast service provider server performs authentication verification using at least one of the initial key, password, and unique data included in the ID information of the CAS application installed in the smart card. . The method of claim 1, The third stage of service Receiving the set-top box using a smart card, characterized in that the broadcast service provider further comprises a step 3-4 of transmitting a CAS application deactivation message for the installed CAS application to the smart card. 10. The method of claim 9, The above 3-4 process And after the smart card receives the CAS application deactivation message, deleting at least one of an operation key, a password, and unique data included in ID information of the installed CAS application. Restriction on receiving boxes.
KR1020090010723A 2009-02-10 2009-02-10 Method for conditional access of set top box using smart card KR20100091505A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8644505B2 (en) 2010-12-10 2014-02-04 Electronics And Telecommunications Research Institute Remote entitlement processing module integration processing device and method
CN111970551A (en) * 2020-08-21 2020-11-20 广州欢网科技有限责任公司 IPTV card changing method, device and system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8644505B2 (en) 2010-12-10 2014-02-04 Electronics And Telecommunications Research Institute Remote entitlement processing module integration processing device and method
CN111970551A (en) * 2020-08-21 2020-11-20 广州欢网科技有限责任公司 IPTV card changing method, device and system
CN111970551B (en) * 2020-08-21 2022-04-12 广州欢网科技有限责任公司 IPTV card changing method, device and system

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