Eight-dimensional Six Hyperchaotic System And Its Application

With the rapid development of network and communication technology,network has become an important approach of storage and information dissemination,gradually goes into all aspects of people's life.However,as network security prevention work is not perfect and partially user's unscientific way of connecting Internet,which both cause the user's important information suffered from unauthorized access become a common phenomenon,therefore the protection of information security has become a key issue of network communication.In recent years,with the acceleration development of research on chaos theory and the significant progress achieved by chaos technology in the application field,what's more,chaos theory applied in encrypting the information has become the focus topic of research.Firstly,the paper analyzes the current situation of the Internet information security,discusses the method of the application of chaos theory in the field of information security.And it is the paper that traces the birth of chaos theory and its development process,and declares the definition of chaotic system,what's more.features and researches methods from the perspective of the nonlinear dynamics.Secondly,the paper proposes a new eight-dimensional six hyperchaotic system based on today's chaotic system,then calculates the dissipativity of the system and designs Matlab simulation model of hyperchaos system and simulates it.Even more,calculating Lyapunov index and drawing the time-domain waveform and the power spectrum which verify its super-power spectral characteristics of chaos.Thirdly,the consistent outcome resulted from comparing between the simulation of hardware circuit corresponded with new hyperchaotic system and Matlab simulation which indicating the correctness of the design and ultra-chaotic system can be realized.Finally,eight-dimensional six hyperchaotic system is applied to the design of information encryption,respectively,the signal encryption,image encryption and encrypted text.By repeatedly iterative method encryption,key sensitivity analysis,anti-noise and anti-corruption capacity analysis,prove hyperchaotic system is relatively secure communication in the field of other confidential methods and it can do better in maintaining the safety and reliability of the information,having more important theoretical and practical value.