Chaos shift keying secure communication based on improper fractional-order chaotic system and its application in electronic lock

This paper proposes a novel chaotic system model, which can be in a chaotic state when the order is fractional-order, integer order and improper fractional-order. Analyze the equilibrium stability and dynamic characteristics of the chaotic system employing the bifurcation diagram, maximum Lyapunov exponent, Spectral Entropy complexity and phase diagram. The outstanding randomness and unpredictability of system is discovered, which is suit for digital circuit secure communication. The Chaos Shift Keying secure communication method is used to encrypt and decrypt the data with the sequence of system in improper fractional-order, and the sequence of system in integer order is used as cipher. Apply to electronic lock, the simulation results illustrate that the method has an excellent encryption effect and can decrypted, which effectively improves the security of electronic lock confidential communication.