Method, device and system for preventing video fingerprint attacks

Abstract

The invention discloses a method, a device and a system for preventing video fingerprint attacks. The method includes that a terminal generates user fingerprint information which can identify video sources and obtains fingerprint position information of a current frame period from a data packet storing the fingerprint position information of the current frame period; OSD (on screen display) invisible fingerprints are obtained by modifying parameters of a screen menu adjusting controller through a universal screen menu adjusting interface according to the user fingerprint information generated by the terminal and the fingerprint position information in the current frame period and are overlaid on original videos decoded to obtain videos with invisible fingerprints. By inserting the invisible fingerprints in the videos by modifying the parameters of the OSD controller and on the condition without affecting video quality, the video fingerprints are not easy to be attacked, robustness of the video fingerprints is improved, and the purpose of preventing the video fingerprints is achieved. Meanwhile, trouble in customizing a terminal decoding module of a set-top box is eliminated through the OSD universal interface.

Description

technical field [0001] The invention relates to a video fingerprint technology in a content protection system in the field of digital television, in particular to a method, device and system for preventing video fingerprint attacks. Background technique [0002] With the continuous development of digital TV technology, the use of digital technology to record, store, transmit and play multimedia content has become quite popular. People can easily find a large number of multimedia resources such as video and audio from TV. However, there are too many Resources such as duplicates and converted videos, some of which may be illegal copies. For digital TV program copyright holders, piracy causes great economic losses to them every year. [0003] In the digital TV conditional access (CA, certification authority) system, the video encryption protection technology is very mature in the front-end and video transmission process, but at the terminal of the CA system, the video is compl...

AI Technical Summary

Problems solved by technology

[0008] Comparing the above two schemes, in the first implementation scheme, fingerprint embedding is carried out during the video decoding process. Since the terminal set-top box is researched and developed by the manufacturer, the decoding module of the terminal set-top box is not open, such as during the video decoding process. Fingerprint embedding needs to modify the decoding module, so that this technology needs to be customized during the production of terminal set-top boxes, which has great limitations; in the second embodiment, the piracy tracking is based on the human visual system. When piracy occurs, Pirate users can also easily identify visible fingerprints with the naked eye, and use some methods to process the video without affecting the video effect, erasing or destroying the visible fingerprints in the original video, which will lead to the failure of pirate tracking. This is a kind of video Behavior of Fingerprint Attacks

In practical applications, attacks often occur, as long as the video is slightly processed: such as frame deletion, encoding, etc., it will bring a certain degree of damage to the video fingerprint

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