A secure communication method based on 6-D hyperchaos and circuit implementation

Abstract

This paper presented a novel six-dimensional hyperchaotic system and constructed a new chaotic communication encryption method to take advantage of every dimensional sequence of the system. Based on the existing four-dimensional Lorenz system, a new six-dimensional hyperchaotic system is proposed and some related dynamic characteristics of the system are analyzed. To improve the security of communication, the signals are decomposed into n groups of linearly independent data, and the n groups of data are linked with n-dimensional sequence s of the system. A circuit simulation experiment is performed to verify the effectiveness of the method. The experimental results show that combining $$n$$ groups of linearly independent data with n-dimensional chaotic sequences increases the utilization of chaotic sequences and improves the security of secure communication.