A Video Encryption Method Based on Hyperchaotic System

Abstract

The invention provides a video encryption method based on a hyper-chaotic system and relates to the technical fields of image processing and secure communication. The method includes an encryption process and a decryption process; the encryption process first brings the chaotic secure communication system to a synchronized state, drives the system to generate an encrypted initial scrambling sequence and an encrypted initial scrambling matrix, and then decomposes the video plaintext data into data packets and combines them with the encryption The initial scrambling matrix performs an XOR operation to obtain the initial ciphertext data, and the initial ciphertext data is subjected to a row scrambling operation; finally, the scrambled data is subjected to an additive modular diffusion operation, and finally the ciphertext data of the video is obtained. The decryption process of the video is the reverse process of the encryption process. The video encryption method based on the hyperchaotic system provided by the present invention does not require a specific channel transmission key and avoids the risk of the key being stolen during the transmission process; it can effectively overcome the shortcomings of the low-dimensional chaotic system being vulnerable to attacks and is safe. More efficient and easier to implement.

Description

technical field [0001] The invention relates to the technical field of image processing and secure communication, in particular to a video encryption method based on a hyperchaotic system. Background technique [0002] With the rapid development of network technology, the information age with computer as the core has come. While bringing convenience to people's life, it also causes some information security problems. Personal information in the network is stolen, modified and viewed from time to time, which brings unnecessary losses to the country and individuals. Therefore, information security is very necessary in today's society. [0003] Chaotic signals are sensitive to initial values, concealed, unpredictable, highly complex and easy to implement, making them especially suitable for secure communication. Secure communication using chaotic signals has become a hot research issue. There are three main technologies to apply chaos theory to the communication field: chao...

AI Technical Summary

Problems solved by technology

However, it is far from enough to only use the method of chaos synchronization for secure communication, mainly because the correlation operation of the original data cannot be greatly reduced by only using the chaotic sequence generated by chaos synchronization.

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