Image Encryption Method Based on Memristor Hyperchaotic System, Cellular Automata and DNA Computing

A technology of cellular automaton and encryption method, which is applied in the field of image encryption based on memristive hyperchaotic system, cellular automata and DNA computing, which can solve the difficulty in realizing DNA encryption, lack of connection between algorithms and plaintext, and insufficient security advanced questions
CN106023052BActive Publication Date: 2017-06-13HENAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HENAN UNIVERSITY
Publication Date
2017-06-13

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Abstract

The invention relates to an image encryption algorithm based on memoristor hyper-chaotic system, cellular automaton and DNA calculation. First of all, a four-dimensional memoristor hyper-chaotic system based on a Chua circuit is employed, at the same time, a secret key is generated by enabling a plaintext image on an SHA256 function; a pseudo random sequence generated by the chaos system is taken as a basis of DNA dynamic encoding, rules of cellular dynamic evolution are determined according to a DNA matrix after diffusion, and in an encryption process, partitioning processing is performed on the image; and finally, the image is encrypted through a pseudo DNA calculation method, and diffusion operation is carried out while the image is scrambled. According to the invention, on one hand, secret key space is increased and the capability of the algorithm in fending off violent attacks is enhanced; and on the other hand, the secret key is enabled to be generated through close reliance on a plaintext, the capability of the algorithm in fending off plaintext attacks is improved, the capability of fending off exhausive attacks is higher, parallel calculation is facilitated, the operation efficiency is further improved, and the security of the algorithm is improved.
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Description

technical field

[0001] The invention relates to the field of image encryption, in particular to an image encryption method based on memristive hyperchaotic system, cellular automaton and DNA calculation. Background technique

[0002] Today, with the rapid development and popularization of smart terminal devices, most of the information in our lives, such as pictures shared on Weibo, video conversations using WeChat, etc., must be transmitted through the network. Due to its vivid, simple, intuitive and other advantages, images have developed into an indispensable means of communication in our lives. However, people's research on network security has not reached an absolutely reliable point, so there are huge security holes in the transmission of images in the network. News reports that information has been leaked are also common, so ensuring the security of information in network transmission has become a problem that researchers must face. Generally speaking, the images to...

Claims

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