Video communication method and device based on chaotic encryption

A chaotic encryption and chaotic cipher technology, applied in the field of video communication, can solve the problems of easy deciphering and low confidentiality

Active Publication Date: 2016-08-17
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a video communication method and device based on chaotic encryption, to solve the problem that the video encryption communication method in the prior art has low confidentiality and is easy to be deciphered

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  • Video communication method and device based on chaotic encryption
  • Video communication method and device based on chaotic encryption
  • Video communication method and device based on chaotic encryption

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Embodiment Construction

[0073] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0074] See figure 1 , shows a flow chart of a video encryption method based on chaotic encryption in an embodiment of the present invention, the method is applied to the sending end of the video, such as figure 1 The method shown may include the steps of:

[0075] S110. Perform H.264 encoding on the video stream signal to be encrypted to ob...

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Abstract

The embodiment of the invention provides a video encryption method based on chaotic encryption. According to the method, different chaotic passwords are used for respectively performing selective chaotic encryption on the horizontal direction component and the vertical direction component of the moving vector difference value of a video signal and the direct current component of a DCT conversion matrix; the attacking complexity is improved; meanwhile, the video signal security is also improved. In addition, a six-dimensional disperse time chaotic system based on a non-linear nominal matrix is used; one six-dimensional chaotic system totally has more than 100 mutually independent secret key parameters; each secret key has the snow slide effect, so that the attract complexity required for cracking each secret key parameter is very high; the security of the video encryption is further improved.

Description

technical field [0001] The invention belongs to the field of video communication, in particular to a video communication method and device based on chaotic encryption. Background technique [0002] With the rapid development of information technology, multimedia communication with video information as the main source has been paid more and more attention by people. However, the channel through which video signals pass is an insecure channel, and video data is extremely vulnerable to attacks and theft during transmission. Therefore, people have an urgent need for the security of video data. [0003] Chaotic encryption mainly uses the sequence generated by the iteration of the chaotic system as a factor sequence of encryption transformation. H.264 is a highly compressed digital video coding standard. Among them, the selective chaotic encryption in the H.264 encoding process is to selectively encrypt the intermediate variables in the H.264 encoding process, including the mot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04L29/06
CPCH04L9/001H04L65/762H04L65/70
Inventor 张晓扬陈平禹思敏吕金虎
Owner GUANGDONG UNIV OF TECH
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