Design of 9-D global chaotic system and its application in secure communication

Abstract

Purpose

In this paper, a nine-dimensional chaotic system is designed and applied to secure communication.

Design/methodology/approach

Firstly, the equilibrium characteristics, dissipativity, bifurcation diagram and Lyapunov exponent spectrum are used to analyze the relevant characteristics of the proposed nine-dimensional chaotic system. In the analysis of Lyapunov exponential spectrum, when changing the linear parameters, the system shows two states, hyperchaos and chaos. For secure communication, there is a large secret key space. Secondly, C0 complexity and SEcomplexity of the system are analyzed, which shows that the system has sequences closer to random sequences.

Findings

The proposed nine-dimensional system has a large key space and more complex dynamic characteristics

Originality/value

The results show that the proposed nine-dimensional hyperchaotic system has excellent encryption capabilities and can play an important role in the field of secure communication.

Citation

Liu, M., Yu, W., Wang, J., Chen, Y. and Bian, Y. (2022), "Design of 9-D global chaotic system and its application in secure communication", Circuit World, Vol. 48 No. 1, pp. 88-104. https://doi.org/10.1108/CW-03-2020-0042