A Video Encryption Method Based on Hyperchaotic System

Abstract

The invention provides a video encryption method based on hyper-chaos system, and relates to the technical field of the image processing and secret communication. The method comprises the encryption process and the decryption process; the encryption process comprises the following steps: enabling a chaos secret communication system to achieve a synchronization state, and driving the system to generate an encryption initial scrambling sequence and an encryption initial scrambling matrix, and then decomposing video plaintext data into a data packet, performing XOR operation on the data packet and the encryption initial scrambling matrix to obtain initial cipherext data, and performing line scrambling operation on the initial ciphertext data; and finally performing adding module diffusion operation on the scrambled data to obtain the final video ciphertext data; the decryption process of the video is the inverse process of the encryption process. Through the video encryption method basedby the hyper-chaos system provided by the invention, the key can be transmitted without using a specific channel, and the risk that the key is stolen in the transmission process is avoided; the disadvantage that the low-dimension chaos system is easy to be attacked can be effectively overcome, the security is higher, and the realization is easy.

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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