Research And Application Of Video Encryption Technology Based On Chaotic Synchronization Theory

With the wide application of computer and the rapid development of artificial intelligence technology,the emergence of many new electronic products,so that people in the life for image and video transmission way more and more,so the image and video transmission’s safety and confidentiality is very important.The traditional encryption method is mainly to encrypt the text information,and it is not suitable to apply it to the encryption of video.So how to break the traditional encryption method to encrypt the video data has become one of the most important research directions.By studying the concept and method of synchronization of chaos and chaos,the synchronization design of hyperchaotic system is realized,and the selected video is encrypted by synchronous system.According to the concept of cellular neural network and formula,construct 5 order hyper chaotic system of cellular neural network with 4 order Chen’s hyper chaotic system,the principle of stability by using Lyapunov index,constructing Lyapunov function,Determine the size of the synchronous controller,synchronization of 5 order cellular neural network chaotic system with 4 order Chen’s chaotic system.According to the mathematical definition of chaotic synchronization and the method of chaotic synchronization,the encryption algorithm of the selected video is designed by using the hyper chaotic synchronization system.And a simple introduction and assignment of the Arnold cat map,the selected video frames,using the Arnold cat map of the pixel position of image scrambling,and combined with the chaotic synchronization of hyperchaos,thereby scrambling image encryption,the results of encryption and decryption are obtained.Scrambling degree,sensitivity and information entropy security are analyzed for the encryption effect.From the analysis results,we can see that the encryption algorithm has high image scrambling degree,high sensitivity to the key and the randomness of the hyperchaotic sequence is good,It can be seen that the encryption effect of this article is good.In this paper,the concepts and expressions of chaos and cellular neural networks are briefly introduced.Secondly,according to the chaotic synchronization theory,the hyperchaos synchronization is introduced,and the hyper chaotic synchronization system is constructed,and the synchronization error image is used to verify whether the synchronization is realized.Finally,the application constructed hyperchaoticsystem combined with Arnold cat mapping to encrypt and decrypt the selected video,and verify the encryption effect.