Method for binding machine and card in mobile multimedia broadcasting system

A mobile multimedia and machine-card binding technology, applied in the field of mobile multimedia broadcasting and communication, can solve the problems of operators' business loss and hidden dangers of system security, and achieve the effect of improving anti-cracking ability and protecting interests

Inactive Publication Date: 2009-10-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While this mode of operation brings convenience to users, it also brings hidden dangers to the security of the system: once the CA card is cracked, the cracker can copy a large number of CA cards with the same card number and illegally sell them to other users and to operators. massive business loss

Method used

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  • Method for binding machine and card in mobile multimedia broadcasting system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] figure 1 is a schematic diagram of an embodiment for realizing the method of the present invention. The specific instructions are as follows:

[0020] 100 Each mobile multimedia terminal is uniquely numbered when it leaves the factory, which is fixed in the terminal hardware and cannot be changed. At the same time, the number can be queried by the user through the man-machine interface or provided to the user in the random manual.

[0021] 110 Each CA card has a unique number, which is fixed in the card and cannot be changed. At the same time, the number can be queried by the user through the man-machine interface or provided to the user in the random manual.

[0022] 120 Input and save the valid CA card number and terminal number in the terminal and CA card management system of the multimedia broadcasting system.

[0023] 200 When the user uses a terminal for the first time, insert the CA card into the terminal, and prompt the user through the man-machine interface...

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Abstract

A machine-card binding realization method in a mobile multimedia broadcasting system comprises the following step that: (1) each mobile multimedia receiver is given a unique number and each conditional reception card is given a unique card number; (2) a user is reminded of carrying out machine-card binding by a human-machine interface when the user binds a conditional reception card and a mobile multimedia receiver for a first time use; (3) a conditional reception system generates a user key with a function for the conditional reception card number and the receiver number which have undergone machine-card binding, a product key is encrypted through the user key, then a service key is encrypted through the product key, and consequently a conditional reception message is generated and sent to the receiver; (4) the mobile multimedia receiver sends the conditional reception message to the conditional reception card after reception, the conditional reception card reads the number of the bound receiver and generates a user key with the same function, and a control word is obtained through decryption of the user key.

Description

technical field [0001] The invention relates to the field of communication, in particular to the field of mobile multimedia broadcasting, and relates to a method for realizing machine-card binding in a mobile multimedia broadcasting system. Background technique [0002] With the development of digital TV technology, viewers will face more and more choices of digital TV programs. However, due to the increase in investment costs, the broadcasting industry requires users to charge certain viewing fees. The conditional access system is a system that implements access control for certain broadcasting services. It uses various digital technologies to scramble programs so that only authorized users can watch (listen) the scrambled programs and realize digital TV. Paid service of (audio) broadcasting system. [0003] The existing digital TV conditional access generally adopts a multi-layer key mechanism to encrypt the transmission program. The key factors of the conditional access...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/16H04N5/00H04H60/23H04N21/235H04N21/258H04N21/435
Inventor 穆志纯
Owner ZTE CORP
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