Fusion encryption method based on multiple chaotic systems

Abstract

The invention relates to a fusion encryption method based on multiple chaotic systems. On the basis of PWLCM, Kent and a one-dimensional Logistic mapping chaotic system, a shuffling algorithm, bit scrambling and a dynamic DNA coding method are fused, and different chaotic sequences are generated by the chaotic system; and then binary pixel values are cleaned by using a shuffling algorithm, bit-level scrambling is carried out through an index matrix, and diffusion operation is carried out by dynamic DNA coding. According to the method, a multi-chaotic system is used, a key space which is large enough is provided, statistical attacks and differential attacks can be effectively resisted through combination of a shuffling algorithm, bit scrambling and dynamic DNA coding, so that good safety, noise resistance and the like are achieved, the encryption effect is enhanced, and the encryption efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of image encryption, in particular to a fusion encryption method based on multiple chaotic systems. Background technique [0002] At present, due to the virtuality and openness of the network environment, digital images are vulnerable to hacker attacks during the transmission process, resulting in images being stolen or tampered with. However, traditional chaotic image encryption algorithms generally have shortcomings such as small key space and poor security performance, which affect the reliability of image encryption transmission. Contents of the invention [0003] The purpose of the present invention is to provide a fusion encryption method based on multiple chaotic systems, so as to enhance the encryption effect and improve the encryption efficiency. [0004] To achieve the above object, the present invention provides the following scheme: [0005] A fusion encryption method based on multiple chaoti...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the virtuality and openness of the network environment, digital images are vulnerable to hacker attacks during the transmission process, resulting in images being stolen or tampered with.

However, traditional chaotic image encryption algorithms generally have shortcomings such as small key space and poor security performance, which affect the reliability of image encryption transmission.

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