Research On Quantum Image Encryption Algorithm Based On Chaotic Maps

With the rapid development of computer technology and the popularization of big data,people can transmit a large amount of information through the Internet.Due to the openness of the Internet,information faces security issues in the transmission process.This information often involves personal privacy and other sensitive information,the security of information in the transmission and storage process needs to be guaranteed.At present,image information has become the most common information in the network,and has been widely used in various fields.It plays an extremely important role in multimedia information,and people pay great attention to image security.The protection of image security is mainly through image encryption methods which can ensure the security of image during the process of transmission and storage.The research and design of more efficient and secure image encryption algorithm is of great significance to the development of information security.In recent years,quantum information science has developed rapidly.The traditional methods of image processing have been unable to meet the demand,and these methods have gradually expanded from the classical field to the quantum field.Since quantum computation has many characteristics,such as parallelism and superposition,image processing methods based on quantum theory in terms of efficiency and safety have significant advantages.Since 2013,image encryption based on quantum theory has developed rapidly,and quantum image processing has gradually gained people’s attention.In this paper,two encryption methods are proposed,which use different chaotic maps to encrypt the quantum images.Finally,the simulation experiments and effect analysis of the encryption methods are carried out.The main encryption ideas and innovations are as follows:In this paper,we first put forward a kind of image encryption algorithm based on Logistic chaotic map,which focuses on the spatial position scrambling of image pixels.Due to the strong non-periodicity of chaotic map,it can effectively solve the periodic problem of image scrambling and improve the scrambling effect.Moreover,according to the random sequence generated by the Logistic chaotic map,the red,green and blue primary color interchange operations are performed.It greatly enhances the encryption effect,expands the key space using chaotic maps,and improves the ability of resisting brute force attacks.Simulation experiments and safety analysis indicate that the encryption algorithm is effective and feasible;Further,we propose an image encryption algorithm based on chaotic maps and DNA coding.The Lorenz chaotic map was used to select the DNA encoding rules to generate the natural DNA matrix and dynamically select the DNA operation rules.In aspect of DNA operation,the unpredictability of chaotic map greatly enhances the encryption effect of the encryption algorithm,and significantly improves the security of the encryption algorithm,and makes the security of the encryption algorithm notablely improved;Finally,according to the experimental results of the two kinds of encryption algorithms,we summarize the characteristics of the proposed encryption algorithms and analyze the advantages,simulation results indicate that the chaotic map has a fast iteration speed,high encryption efficiency,large key space,and good encryption effect.In terms of encryption efficiency and security,the two image encryption algorithms proposed in this paper are superior to the classical image encryption algorithms.