A method, system and scrambling device for ensuring content security of digital television programs

Abstract

The invention discloses a method, system and scrambling device for ensuring the security of digital TV program content. The scrambling device verifies the data in the TS stream, generates a check code, and inserts the generated check code into ECM data Middle; at the same time, the scrambling device scrambles the TS stream to generate a scrambled TS stream, and multiplexes the scrambled TS stream and ECM data and sends it to the digital TV terminal; the digital TV terminal receives the TS stream data from the scrambling device , and perform demultiplexing to obtain the scrambled TS stream and ECM data, and decrypt and analyze the ECM data to obtain the check code in the ECM data; at the same time, descramble the scrambled TS stream, and descramble the Check the data in the TS stream to generate a check code; compare whether the generated check code matches the check code in the ECM data, and decode and play the program if they match. It has the advantages of simple implementation and high security.

Description

technical field [0001] The invention relates to the field of content security, in particular to a method, system and scrambling device for ensuring the security of digital TV program content. Background technique [0002] With the development of digital TV technology, my country has basically completed the upgrading of digital TV, and digital TV has become one of the most important ways for people to receive information. As an authoritative channel for information release and publicity, digital TV shoulders the heavy responsibility of guiding public opinion and disseminating positive energy. However, with the development of science and technology, many illegal organizations can tamper with digital TV content or insert illegal content into digital TV content to carry out reactionary propaganda, seriously affecting social stability, unity and harmonious development. How to ensure the security of digital TV content, especially the security of video content, and how to correctl...

AI Technical Summary

Problems solved by technology

The technical solution described in CN201110050417.5 is suitable for content providers to add watermarks before generating TS streams from video content. For radio and television in charge of cable digital TV operations, the front end mainly receives video content in the form of TS streams, which cannot be processed according to CN201110050417 The technical solution described in .5 verifies the integrity of the TS stream by adding a watermark in the TS stream

In addition, if you want to use the technical solution described in CN201110050417.5 to verify the integrity of the TS stream by adding a watermark to the video content, you must add multiple sets of decoders, encoders and other equipment at the front end of the cable digital TV, which will inevitably increase the number of radio and television cost to the operator and would increase the difficulty and complexity of handling

In summary, the technical solution of adding digital watermark in the VLC domain of the video described in CN201110050417.5 is not applicable to the current operation mode of cable digital TV

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