An image data encryption oriented robust chaotic mapping system and a complexity optimization control method thereof

Abstract

The invention discloses a robust chaotic mapping system for image data encryption and a complexity optimization control method thereof, and the method comprises the following steps: 1, constructing achaotic mapping system, and calculating a system stationary point and a characteristic value expression thereof; 2, determining constant Lyapunov exponent characteristics of the mapping system in an infinite parameter range by analyzing the influence of system parameters on the characteristic values; 3, analyzing the position modulation effect of the parameters on the symmetrical non-zero fixed points of the mapping system, and determining the change rule of the signal amplitude along with the parameters; 4, a Matlab program is compiled, a Lyapunov exponent spectrogram and a bifurcation diagram about bifurcation parameters are drawn, and robust chaotic characteristics and amplitude control characteristics of the system are analyzed; And step 5, based on an iteration value domain matching condition and Lyapunov exponent definition, designing a complexity optimization control scheme of the robust chaotic mapping system with the Lyapunov exponent as a measurement criterion.

Description

technical field [0001] The invention relates to a robust chaos mapping system oriented to image data encryption and its complexity optimization control method. Background technique [0002] The secure transmission of image data is a research hotspot in the field of modern communication, and the design of encryption algorithm is an important guarantee for the security of image data communication transmission. Traditional encryption algorithms such as IDEA, DES, AES, and RSA are designed based on content data such as text information. The encryption efficiency is low, the structure is complex, and the amount of calculation is large, which cannot meet the needs of real-time image data encryption with large information volume and high redundancy [1 ]. Special encryption schemes such as matrix transformation encryption, SCAN language encryption, shared storage encryption, transformation domain encryption, and DNA encryption can further improve the security of image data encrypti...

AI Technical Summary

Problems solved by technology

However, the current research on the chaos robustness of discrete maps is limited to the case where the robust factor is within a limited parameter interval, and the stability and complexity of chaos cannot be guaranteed [9], so it is not convenient to provide sufficient parameter keys

[0004] In summary, the discrete chaotic mapping system can be used to obtain an efficient and fast image encryption method, but in order to obtain the OPT image encryption communication implementation scheme under the unconditional security criterion, the discrete mapping system is required to be complex and robust within the infinite parameter range (real number parameter interval). Awesome Chaos Features

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