Chaos-Based Secure Communications in Biomedical Information Application

Abstract

Recently, with the rapid development of biomedical information, establishing secure communication and appropriate security services has become necessary to ensure a secure information exchange process. Therefore, to protect the privacy and confidentiality of personal data, in this study, we use a chaotic system, Lü system of the Lorenz-like system, to generate chaotic signals and apply them to encrypt the biomedical information. In addition, with one of the states of the chaotic system, we design a simple proportional-derivative (PD) controller to synchronize the master-slave chaotic systems for decrypting the biomedical information. Then, we encrypt the biomedical information, electrocardiography (ECG) and electromyography (EMG), measured about 30 s to 60 s to get tens of thousands of data from the subjects at the transmitting side (master) and send them to the receiving side (slave). After the receiving side receives the encrypted information, it decrypts them with the PD controller and then obtains the 1 mV to 2 mV biomedical signals. Thus, the security of the biomedical information can be ensured and realized.

Discrete-Time Hyperchaotic System Synchronization

“…Previously published results highlight the fact that complex emitter dynamics provide high security of the chaotically encrypted signal (Grigoraş and Grigoraş, 2017;Maqbool et al, 2017) leading to the study of hyperchaotic discrete-time systems as emitting element in the communication structure. Using the proposed approach to biomedical signal transmission, is confirmed in (Beck et al, 2021;Liao et al, 2021).…”

Fully Integrated Chen Chaotic Oscillation System

“…e double-scroll Chua system is the first physical circuit realization of chaos. Since then, other chaotic and hyperchaotic systems with complex chaotic attractors and nonlinear dynamical characteristics have been realized [26][27][28][29][30][31], and most of them are validated with commercial available discrete electronic components or digital signal processing (DSP) and field programmable gate array (FPGA) [32][33][34][35][36][37][38][39][40][41][42].…”

FPGA-Based Implementation and Synchronization Design of a New Five-Dimensional Hyperchaotic System

“…In 1963, the American meteorologist E. N. Lorenz observed chaos in his atmospheric studies, opening the way for future exploration of chaos [ 1 ]. Chaos has favorable randomness and it is widely used in various fields such as secure communication [ 2 ], medical image processing [ 3 , 4 , 5 ], biomedical science [ 6 , 7 ], and finance [ 8 , 9 , 10 ]. In 1979, Otto Rössler proposed the first hyperchaotic system with two or more attractors and positive Lyapunov exponents, its phase orbitals can be separated in multiple directions, and the algebraic structure and dynamical behavior are more complex, confidential, and impenetrable than ordinary low-dimensional chaotic systems, with greater potential for research and development.…”