Terminal and method for securely playing multimedia broadcast content
A multimedia broadcasting and security technology, which is applied in broadcasting system control and key distribution, can solve problems such as inability to guarantee security, and achieve the effect of preventing reception and broadcasting
Active Publication Date: 2012-08-15
VIA TECH CHINA
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Problems solved by technology
The former cannot guarantee security, and although the latter can basically solve the security problem of broadcast content through the above-mentioned method, it needs to make great improvements to the current broadcast system and the receiving end, and because it involves a large number of digital signature operations, the broadcast The data processing capability of the system also has higher requirements
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[0017] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.
[0018] The method and system for securely broadcasting and playing multimedia broadcast content proposed by the present invention adopts the processing mode of broadcast channel signature to generate a secure broadcast information, and inserts the secure broadcast information into the transmission frame of the broadcast channel at a certain time interval , at the same time, the terminal is equipped with corresponding extraction and inspection equipment, so that the terminal has the ability to identify the source of the broadcast content, thereby preventing the broadcast of illegal content; the present invention also encrypts the channel and multiplexing control information of the broadcast system in a specific way processing, and a corresponding c...
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The invention provides a terminal and a method for securely playing multimedia broadcast content, and in particular relates to a terminal of a multimedia broadcast system. The terminal of the multimedia broadcast system is used for playing the multimedia broadcast content, and comprises a secure broadcast information extraction module, a control information decryption module and a secure broadcast information verification module, wherein the secure broadcast information extraction module extracts secure broadcast information and channel and multiplexing control information cryptograph from the received broadcast content; the control information decryption module decrypts the channel and multiplexing control information cryptograph according to a built-in equipment key and the secure broadcast information to generate channel and multiplexing control information; and the secure broadcast information verification module is used for verifying the secure broadcast information according to the channel and multiplexing control information cryptograph and a front-end certificate. Broadcast signal sources can be identified through the secure broadcast information so as to prevent the receiving and playing of illegal contents.
Description
technical field [0001] The invention relates to a multimedia broadcasting system and method, in particular to a method and system for realizing safe broadcasting in a mobile multimedia broadcasting system. Background technique [0002] Broadcasting systems, especially multimedia broadcasting systems for mobile terminals or mobile phones, have been more and more commonly used in various fields in recent years. These multimedia broadcasting systems generally include basic operating services and value-added operating services. For example, TV broadcasting, sound broadcasting, electronic business guide and emergency broadcasting can be regarded as basic multimedia operation services. And real-time and / or non-real-time data broadcasting services, such as network audio-visual broadcasting and financial, traffic and government order broadcasting, are also operating services of the multimedia broadcasting system. [0003] However, while the broadcasting system is widely used, its ...
Claims
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IPC IPC(8): H04H60/23H04L9/08
Inventor 黄谆
Owner VIA TECH CHINA