CN100425074C - Implementation method of mother-child smart card for multi-terminal management of one household - Google Patents
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Abstract
Translated fromChineseDescription
Translated fromChinese技术领域technical field
本发明属于数字电视条件接收技术领域，特别涉及数字电视前端的管理系统以及终端的解密方法。The invention belongs to the technical field of digital television conditional access, and in particular relates to a digital television front-end management system and a terminal decryption method.
背景技术Background technique
众所周知，条件接收系统是指用来控制用户对广播服务进行接收的系统，通过授权管理来实现广播系统的有偿服务。As we all know, the conditional access system refers to a system used to control users to receive broadcast services, and the paid service of the broadcast system is realized through authorization management.
条件接收系统对广播服务的控制是通过对广播数据进行加扰，并对加扰控制信息加密来实现的，由控制字产生解扰序列进行解密，控制字的安全传送依赖于服务密钥，经服务密钥加密后与加扰后的数据一同发送。服务密钥对控制字进行加密，在授权控制信息(ECM：Entitlement Control Message)中传输，终端机顶盒根据ECM包的标识号过滤出当前频道的ECM包，并送入智能卡，智能卡利用解密后的服务密钥对加密后的控制字进行解密，将解密后的控制字返回给机顶盒进行解扰节目。The conditional access system controls the broadcast service by scrambling the broadcast data and encrypting the scrambled control information. The descrambling sequence is generated by the control word for decryption. The safe transmission of the control word depends on the service key. The service key is encrypted and sent with the scrambled data. The service key encrypts the control word and transmits it in the authorization control message (ECM: Entitlement Control Message). The terminal set-top box filters out the ECM packet of the current channel according to the identification number of the ECM packet and sends it to the smart card. The smart card uses the decrypted service The key decrypts the encrypted control word, and returns the decrypted control word to the set-top box to descramble the program.
前端利用用户密钥对服务密钥进行加密，将加密后的服务密钥通过EMM数据包发送给终端机顶盒，机顶盒读出智能卡编号，并根据智能卡编号过滤EMM数据包，将过滤到的EMM数据包送入智能卡，智能卡中的用户密钥对加密后的服务密钥进行解密，将解密后的服务密钥存储到智能卡中。The front end uses the user key to encrypt the service key, and sends the encrypted service key to the terminal set-top box through the EMM data packet. The set-top box reads the smart card number, filters the EMM data packet according to the smart card number, and sends the filtered EMM data packet The user key in the smart card decrypts the encrypted service key, and stores the decrypted service key in the smart card.
这种智能卡一般采用八位CPU单片芯片；该智能卡的相关标准主要为IS07816系列标准。This kind of smart card generally uses an eight-bit CPU single-chip chip; the relevant standards of the smart card are mainly IS07816 series standards.
在上述智能卡中写入的数据信息包括，厂商信息数据(CAS厂商的信息、智能卡编号)；运营商数据(记录各个运营商厂商信息、智能卡版本号、标识号等)；用户控制信息数据(记录的是用户可以通过机顶盒修改自己信息)；AC信息数据(记录智能卡用户的属性，如寻址用的地区码)；密码信息数据(记录用户载入PIN码的版本)；机卡对应数据(记录的是此卡在使用中的机卡对应的编号)；钱包数据(各个钱包的信用额度及已花费点数)；IPPV数据(记录的是观看各个运营商IPPV记录的信息)；密钥信息数据(用户密钥、服务密钥等)；每张智能卡在前端数据库中均有一个唯一的标识号及编号。The data information written in the above smart card includes manufacturer information data (CAS manufacturer information, smart card numbering); operator data (recording each operator manufacturer information, smart card version number, identification number, etc.); user control information data (recording The most important thing is that the user can modify his own information through the set-top box); AC information data (record the attributes of the smart card user, such as the area code used for addressing); password information data (record the version of the PIN code loaded by the user); machine card corresponding data (record The card is the number corresponding to the machine card in use); wallet data (the credit limit of each wallet and the points spent); IPPV data (recorded information for watching the IPPV records of each operator); key information data ( user key, service key, etc.); each smart card has a unique identification number and serial number in the front-end database.
目前，一个家庭的一套电视终端使用一张智能卡，只能用来解密并接收一个广播服务。在数字电视领域，同一个家庭拥有两个或两个以上的电视终端，通常希望不同的电视终端接收不同的电视节目。在这种情况下，如果将该家庭的多个终端作为多个用户来管理，则该家庭无法享受一户多端的优惠。At present, a set of TV terminals in a family uses a smart card, which can only be used to decrypt and receive a broadcast service. In the field of digital TV, the same family has two or more TV terminals, and it is usually expected that different TV terminals can receive different TV programs. In this case, if the multiple terminals of the family are managed as multiple users, the family cannot enjoy the benefit of one household with multiple terminals.
发明内容Contents of the invention
本发明的目的是为克服已有技术的不足之处，提出一种用于一户多端管理的母子智能卡的实现方法，使有多台终端设备的一个用户拥有多张智能卡，并在这些智能卡之间建立一种母子联系，可以使拥有多张智能卡的用户享受到一户多端的优惠。The purpose of the present invention is to overcome the deficiencies of the prior art, and propose a method for realizing a mother-child smart card for multi-terminal management of one household, so that a user with multiple terminal devices has multiple smart cards, and among these smart cards Establishing a mother-child relationship between them can enable users with multiple smart cards to enjoy multiple benefits for one household.
为了实现上述目的，本发明提供的一种用于一户多端管理的母子智能卡的实现方法，包括以下步骤：In order to achieve the above object, the present invention provides a method for implementing a mother-child smart card for multi-terminal management of one household, comprising the following steps:
1)终端用户获得一张以上的智能卡，每张智能卡默认为母卡状态，每张智能卡在前端数据库中均有一个唯一的标识号及编号(该智能卡包括已有的用于条件接收系统的智能卡的所有信息数据)；1) The terminal user obtains more than one smart card, each smart card defaults to the master card status, and each smart card has a unique identification number and serial number in the front-end database (the smart card includes the existing smart card used in the conditional access system all information data);
2)若用户申请将多张智能卡转换为具有子母联系的智能卡，则前端将该用户的智能卡标识号设置为相同的标识号，用以表示子、母卡的共同属性；同时，前端给终端用户的各智能卡发送授权管理信息(EMM：Entitlement Management Messages)数据包，该EMM数据包中包括智能卡的编号及其新标识号、子卡标识位置位数据和有效解密时间，接收到此EMM数据的智能卡，由默认的母卡状态转换为子卡状态；2) If the user applies to convert multiple smart cards into smart cards with child-parent connection, the front-end sets the user's smart card identification number to the same identification number to represent the common attributes of the child and mother cards; at the same time, the front-end gives the terminal Each smart card of the user sends an entitlement management message (EMM: Entitlement Management Messages) data packet, which includes the number of the smart card and its new identification number, sub-card identification position data and effective decryption time. Smart card, from the default master card status to daughter card status;
3)前端再给终端用户的各智能卡发送EMM数据包，该EMM数据包中包括智能卡编号和子母对应密钥，使接收到此EMM数据的各智能卡建立起子卡与母卡的联系；(此密钥存储在密钥信息数据中，此密钥作用是将子卡与母卡进行绑定，一张母卡可以与多张子卡建立联系，同属一终端用户的子、母卡中存有相同的标识号和子母对应密钥)；3) The front end sends an EMM data packet to each smart card of the terminal user, and the EMM data packet includes the smart card number and the key corresponding to the mother and child, so that each smart card that receives the EMM data establishes a connection between the daughter card and the mother card; The key is stored in the key information data. The function of this key is to bind the sub-card with the main card. One main card can establish contact with multiple sub-cards. The sub-card and the main card belong to the same terminal user. The identification number and corresponding key of child and parent);
4)母卡独立解密加扰节目，子卡得到母卡授权后且在子卡有效解密时间间隔内才能解密加扰节目，(有效解密时间间隔为从对应时间起到对应时间加子卡有效解密时间段这一时刻止，其中，对应时间为子卡向母卡申请授权的时间)，子卡超过有效解密时间间隔后，子卡得到母卡授权后才能解密加扰节目。4) The mother card independently decrypts the scrambled program, and the child card can only decrypt the scrambled program after being authorized by the mother card and within the effective decryption time interval of the child card (the effective decryption time interval is from the corresponding time to the corresponding time plus the effective decryption of the child card The time period ends at this moment, wherein the corresponding time is the time when the sub-card applies for authorization from the main card), and after the sub-card exceeds the effective decryption time interval, the sub-card can only decrypt the scrambled program after being authorized by the main card.
上述各步骤中，智能卡及用户获得智能卡的方式、卡中的有关信息数据及生成方法、前端发送EMM数据包的方法等均属于本领域的成熟技术。In the above steps, the smart card and the way the user obtains the smart card, the relevant information data in the card and the method for generating it, the method for sending the EMM data packet by the front end, etc. all belong to the mature technology in this field.
本发明的特点及效果：Features and effects of the present invention:
本发明的特点是在多张智能卡间建立一种母子联系。一方面，子、母卡独立地作为终端用户由条件接收系统管理授权，独立地完成加扰控制字的解密；另一方面，子卡在一定时间内必须从母卡中获得一次授权，否则将自动失效。子、母卡不但可以独立完成加扰控制字的解密；同时子卡还受到母卡的牵制。The present invention is characterized in that a mother-child relationship is established between multiple smart cards. On the one hand, the sub-card and the main card are independently managed and authorized by the conditional access system as end users, and independently complete the decryption of the scrambled control word; on the other hand, the sub-card must obtain an authorization from the main card within a certain period of time, otherwise Automatically lapse. The sub-card and the main card can not only complete the decryption of the scrambled control word independently; meanwhile, the sub-card is also restrained by the main card.
通过建立这种母子联系，可以使拥有多张智能卡的用户享受到优惠，另一方面，通过定期获得母卡授权，将子卡限制在一定范围内，避免用户超范围使用子母卡，保证服务提供商的利益。By establishing this mother-child relationship, users with multiple smart cards can enjoy preferential treatment. On the other hand, by regularly obtaining the authorization of the mother card, the child card is limited to a certain range, preventing users from using the mother-son card beyond the scope and ensuring service Provider's Benefits.
附图说明Description of drawings
图1为本发明的实现步骤流程图。Fig. 1 is a flowchart of the implementation steps of the present invention.
图2为本实施例的母卡与子卡建立联系图。FIG. 2 is a diagram for establishing a relationship between a master card and a daughter card in this embodiment.
图3为本实施例的母卡向子卡授权步骤图。FIG. 3 is a step diagram of authorization steps from the master card to the daughter card in this embodiment.
具体实施方式Detailed ways
下面参考附图及实施例进一步详细说明本发明的内容。The content of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
本发明的用于一户多端管理的母子智能卡的实现方法，如图1所示，包括以下步骤：The realization method of the mother-child smart card for one household multi-terminal management of the present invention, as shown in Figure 1, comprises the following steps:
1)终端用户获得一张以上的智能卡，每张智能卡默认为母卡状态，每张智能卡在前端数据库中均有一个唯一的标识号及编号；一种实施例为：终端用户获得3张智能卡，每张智能卡默认为母卡状态，智能卡A编号为8351102100002221，智能卡B编号为8351102100002232，智能卡C编号为8351102100002243。1) The terminal user obtains more than one smart card, and each smart card defaults to the master card status, and each smart card has a unique identification number and serial number in the front-end database; one embodiment is: the terminal user obtains 3 smart cards, Each smart card defaults to the master card status. The number of smart card A is 8351102100002221, the number of smart card B is 8351102100002232, and the number of smart card C is 8351102100002243.
本实施例的智能卡采用八位CPU单片芯片，符合IS07816-1、2、3的底层标准(包括卡的尺寸大小、触点位置、电气特性和数据传送方式等)，在该智能卡中写入的数据信息包括，厂商信息数据(CAS厂商的信息、智能卡编号)；运营商数据(记录各个运营商厂商信息、智能卡版本号、标识号等)；用户控制信息数据(记录的是用户可以通过机顶盒修改自己信息)；AC信息数据(记录智能卡用户的属性，如寻址用的地区码)；密码信息数据(记录用户载入PIN码的版本)；机卡对应数据(记录的是此卡在使用中的机卡对应的编号)；钱包数据(各个钱包的信用额度及已花费点数)；IPPV数据(记录的是观看各个运营商IPPV记录的信息)；密钥信息数据(用户密钥、服务密钥等)；每张智能卡在前端数据库中均有一个唯一的标识号及编号。The smart card of the present embodiment adopts eight-bit CPU monolithic chips, which meet the underlying standards of IS07816-1, 2, and 3 (including the size of the card, contact position, electrical characteristics and data transmission mode, etc.), and write in the smart card The data information includes manufacturer information data (CAS manufacturer information, smart card number); operator data (recording each operator manufacturer information, smart card version number, identification number, etc.); Modify your own information); AC information data (record the attributes of the smart card user, such as the area code used for addressing); password information data (record the version of the PIN code loaded by the user); machine card corresponding data (record the card in use The number corresponding to the machine card in the card); wallet data (the credit limit of each wallet and the points spent); IPPV data (recorded to watch the information recorded by each operator's IPPV); key information data (user key, service key key, etc.); each smart card has a unique identification number and serial number in the front-end database.
2)若用户申请将多张智能卡转换为具有子母联系的智能卡，则前端将该用户的智能卡标识号设置为相同的标识号，用以表示子、母卡的共同属性；同时，前端给终端用户的各智能卡发送EMM数据包，该EMM数据包中包括智能卡的编号及其新标识号、子卡标识位置位数据和有效解密时间，接收到此EMM数据的智能卡，由默认的母卡状态转换为子卡状态；本实施例中前端发送EMM11和EMM12数据包给智能卡B和C，如图2所示；EMM11和EMM12数据包格式如表1：2) If the user applies to convert multiple smart cards into smart cards with child-parent connection, the front-end sets the user's smart card identification number to the same identification number to represent the common attributes of the child and mother cards; at the same time, the front-end gives the terminal Each smart card of the user sends an EMM data packet. The EMM data packet includes the number of the smart card and its new identification number, the identification position data of the sub-card and the effective decryption time. The smart card that receives the EMM data will switch from the default master card state It is the daughter card state; in the present embodiment, the front end sends EMM11 and EMM12 data packets to smart card B and C, as shown in Figure 2; EMM11 and EMM12 data packet formats are as table 1:
表1Table 1
智能卡B与C接收到EMM数据包后，从默认母卡状态转换为子卡状态。After smart cards B and C receive the EMM data packet, they switch from the default master card state to the daughter card state.
3)前端再给终端用户的各智能卡发送EMM数据包，该EMM数据包中包括智能卡编号和子母对应密钥，使接收到此EMM数据的各智能卡建立起子卡与母卡的联系；此密钥存储在密钥信息数据中，此密钥作用是将子卡与母卡进行绑定，一张母卡可以与多张子卡建立联系，同属一终端用户的子、母卡中存有相同的标识号和子母对应密钥；3) The front end sends an EMM data packet to each smart card of the end user. The EMM data packet includes the smart card number and the key corresponding to the mother and child, so that each smart card that receives the EMM data establishes a connection between the daughter card and the mother card; the key Stored in the key information data, the function of this key is to bind the sub-card with the main card, one main card can establish contact with multiple sub-cards, and the same The identification number and the key corresponding to the parent and child;
本实施例中前端发送EMM21、EMM22和EMM23的数据包分别发给智能卡A，B和C，如图2所示；此EMM数据包格式如表2：In the present embodiment, the data packets that the front end sends EMM21, EMM22 and EMM23 are sent to smart card A, B and C respectively, as shown in Figure 2; this EMM data packet format is as table 2:
表2Table 2
智能卡A，B和C过滤到自己的EMM数据包后，将子母对应密钥存储在密钥信息数据中，此时智能卡A、B和C都具有相同密钥，智能卡B、C与智能卡A建立子母关系。After smart cards A, B and C filter their own EMM data packets, they store the key corresponding to the parent and child in the key information data. At this time, smart cards A, B and C all have the same key, and smart cards B and C have the same key as smart card A. Build a child-mother relationship.
4)母卡独立解密加扰节目，子卡得到母卡授权后且在子卡有效解密时间间隔内才能解密加扰节目，(有效解密时间间隔为从对应时间起到对应时间加子卡有效解密时间段这一时刻止，其中，对应时间为子卡向母卡申请授权的时间)，子卡超过有效解密时间间隔后，子卡得到母卡授权后才能解密加扰节目。例如：“对应时间”为2006年1月1日19时0分0秒，“子卡有效解密时间”为72小时，“当前时间”为2006年1月2日19时0分0秒，则子卡正常解密加扰节目；“当前时间”为2006年1月5日19时0分0秒，则子卡无法解密加扰节目，此时子卡需得到母卡授权。4) The mother card independently decrypts the scrambled program, and the child card can only decrypt the scrambled program after being authorized by the mother card and within the effective decryption time interval of the child card (the effective decryption time interval is from the corresponding time to the corresponding time plus the effective decryption of the child card The time period ends at this moment, wherein the corresponding time is the time when the sub-card applies for authorization from the main card), and after the sub-card exceeds the effective decryption time interval, the sub-card can only decrypt the scrambled program after being authorized by the main card. For example: "corresponding time" is 19:00:00 on January 1, 2006, "effective decryption time of sub-card" is 72 hours, and "current time" is 19:00:00 on January 2, 2006, then The sub-card normally decrypts the scrambled program; if the "current time" is 19:00:00 on January 5, 2006, the sub-card cannot decrypt the scrambled program. At this time, the sub-card needs to be authorized by the main card.
本实施例的母卡向子卡授权步骤如图3所示，包括：找到与子卡对应的母卡，插入机顶盒后，母卡利用子母对应密钥加密对应时间2006年1月5日19时0分0秒，机顶盒保存母卡返回的加密数据，此数据保存在机顶盒FLASH中，再将子卡插入机顶盒，机顶盒将FLASH中的加密数据传送给子卡，子卡利用子母对应密钥解密该数据，解密成功后，本次子母对应时间2006年1月5日19时0分0秒写入子卡的运营商数据中，则母卡向子卡授权成功。The step of authorizing the mother card to the child card in this embodiment is shown in Figure 3, including: find the mother card corresponding to the child card, insert it into the set-top box, and encrypt the corresponding time on January 5, 2006 19 At 0 minutes and 0 seconds, the set-top box saves the encrypted data returned by the master card, which is stored in the FLASH of the set-top box, and then the sub-card is inserted into the set-top box, and the set-top box transmits the encrypted data in the FLASH to the sub-card, and the sub-card uses the corresponding key Decrypt the data. After the decryption is successful, write the parent-child corresponding time at 19:00:00 on January 5, 2006 into the carrier data of the daughter card, and then the master card authorizes the daughter card successfully.
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| CN1816137A (en) | 2006-08-09 |
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