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Video-encryption camera and encryption method thereof

An encryption method and camera technology, applied in the field of video information security, can solve problems such as hidden safety hazards, low system integration, and inapplicability to portable occasions, and achieve the effect of improving encryption efficiency

Active Publication Date: 2010-12-01
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, most remote video surveillance security technologies based on fixed cameras use "username / password" authentication technology, and video data is not encrypted during transmission, which is vulnerable to hacker attacks
However, in some video surveillance systems using video encryption in the prior art, the video capture device and the video encryption device are two independent devices, and the integration of the system is low. Attackers can still steal or modify the original video through the video capture device. Data, there are security risks, and it is not suitable for portable occasions

Method used

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  • Video-encryption camera and encryption method thereof

Examples

Experimental program
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Embodiment 1

[0019] see figure 1 , which is a structural block diagram of the video encryption camera of the present invention. The video encryption camera 100 includes a video acquisition module 110 , a video preprocessing and encryption module 120 , a video storage module 130 and a video transmission module 140 . The video capture module 110 completes the video capture, and sends the video data to the video preprocessing and encryption module 120 . Because the captured video will be restricted and disturbed by various conditions, such as uneven light, noise pollution generated by line transmission, etc., which will affect the clarity and video quality of the video, so the video preprocessing and encryption module 120 first performs video data processing. preprocess to improve its video quality; then encrypt the video data. The video data encrypted by the video preprocessing and encryption module 120 will be stored in the video storage module 130 in real time. The video transmission mo...

Embodiment 2

[0045] This embodiment has the same video encryption camera 100 structure as Embodiment 1, the only difference is that after the video preprocessing and encryption module 120 in this embodiment preprocesses the image, it is called and stored in the FLASH ROM according to the operator's instruction Any one of the chaotic encryption systems encrypts the video data with a dynamic key chaotic system. The principle of dynamic key chaotic system encryption is: the video data of each frame is encrypted with a different key, and the key is also scrambled by the chaotic system.

[0046] This embodiment adopts the Lorenz chaotic system dynamic key encryption method. As described in Example 1, the dynamic equation of the Lorenz system is:

[0047] dx / dt = - u ( x - y ...

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Abstract

The invention relates to a video-encryption camera comprising a video acquisition module, a video pre-processing and encrypting module and a video storage module, wherein the video acquisition module is used for transmitting video data to the video pre-processing and encrypting module upon the completion of video acquisition; the video pre-processing and encrypting module is used for pre-processing each frame of video data, making calculations by calling a chaotic encryption system in the video storage module to generate chaotic sequences and further carrying out the XOR operations on the chaotic sequences and each frame of video data to encrypt the video data; and the video storage module is used for storing the encrypted video data on a real-time basis. Compared with the prior art, the invention encrypts the video data while acquiring and pre-processing the video data, and stores the encrypted video data in the video storage module on a real-time basis, thus avoiding the consequences that the raw video data are illegally stolen or falsified.

Description

technical field [0001] The invention belongs to the technical field of video information security, and relates to a video camera capable of encrypting video data and an encryption method thereof. Background technique [0002] At present, the stand-alone video capture systems suitable for outdoor mobile shooting all directly store the captured video information in their storage modules. However, with the development of science and technology, various methods of stealing and modifying video content are also developing rapidly. The authenticity and reliability of the original video file content, as well as the intellectual property rights involved are seriously threatened. Video information in certain fields Protection is imminent. For example, for the shooting of movies, documentaries, etc., it is often necessary to prevent content leakage during production and improvement, and to prevent content from being copied and disseminated at will in the later stage; for example, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N7/18H04L9/00H04L29/06
Inventor 李军何任飞李榕梁展明黄桂有戴波蔡宝强
Owner SOUTH CHINA NORMAL UNIVERSITY
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