Application of Chaotic Systems Reduced-Order Observer Synchronization Based on DNA Strand Displacement in Information Encryption of IoT

IoT technology is a key driver for many applications in different fields, such as digital health, smart city, industrial automation, and supply chain. The information security of the Internet of Things is one of the important requirements. Due to the extreme sensitivity to initial values, high randomness and unpredictability of chaotic information, chaotic synchronization is widely used in the field of IoT information encryption. In this article, chaotic systems are used as information security transmission systems for the IoT, and a IoT information encryption scheme for chaotic synchronization under reduced-order observer is proposed. First, through the study of DNA molecular reaction dynamics, the IoT information encryption of chaotic synchronization is extended to the field of DNA strand displacement (DSD). Second, according to dual-rail theory, the chemical reaction networks (CRNs) of IoT information security transmission systems and IoT transmission information are constructed by multiple DSD reaction modules. Finally, CRNs are cascaded to realize the encryption and decryption of IoT information. Through numerical simulation in Visual DSD and MATLAB, the phase diagram, sequence diagram, Lyapunov exponent diagram and bifurcation diagram are given, and their dynamic characteristics are analyzed. Simulation results verify the effectiveness and feasibility of the scheme. Our work will provide a new reference scheme for chaotic synchronization and IoT information encryption using DSD.