A digital stream media fingerprint watermark protection method and device

Abstract

The invention relates to a digital stream media fingerprint watermark protection method and device, wherein, the digital stream media fingerprint watermark protection method is characterized in that the digital stream media fingerprint watermark protection method comprises the following steps of: sending a terminal receives audio and video data by an operator; Descrambling the audio and video data; Taking the response data of the PUF on the chip of the terminal as fingerprint watermark data; Inserting the fingerprint watermark data into the audio and video data according to a predetermined format and insertion position. The corresponding fingerprint function can be embedded into the existing terminal equipment chip, and the resource of the chip hardware itself can be used to reduce the implementation cost, so that the fingerprint function has strong implementability. Due to the use of PUF mechanism, the detection results can be relatively reliable to ensure uniqueness through the relevant detection mechanism, and the scheme is more fault-tolerant.

Description

technical field [0001] The present invention relates to a device and method for protecting signal transmission between modules of a digital streaming media terminal, in particular to a large-capacity high-definition or ultra-high definition in multimedia broadcast or on-demand transmission when operators need to push high-value high-definition or ultra-high-definition content A device and method for protecting intellectual property rights through fingerprint watermarking for content. Background technique [0002] At present, with the popularization and development of 4K / HDR, content providers pay more and more attention to the protection of copyright, and the security requirements are becoming more and more stringent. The requirements of major CA and DRM companies or organizations in the world for content protection are also becoming more and more serious. High, especially MOIVELAB, the security representative of the Hollywood film industry, has very strict regulations on hi...

AI Technical Summary

Problems solved by technology

Among the currently popular fingerprint watermarking schemes, some CA systems can also provide fingerprint functions, but only in the process from the front end to the receiver / host, and then to the conditional access module, and cannot reach the secondary scrambling and descrambling process protected by the CI+ protocol. In addition, the conditional access module needs to have a strong decoding ability, requires a large power consumption, and the cost of the code stream required by the entire solution is also relatively high, so it is necessary to further enrich the new fingerprint watermarking solution

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