A Scheme for Encryption/Decryption based on Hyperchaotic Systems and Lyapunov Theory

Abstract

This paper is concerned with the analog encryption/decryption problem based on the synchronization of hyperchaotic systems. Basically, by using Lyapunov arguments, a synchronization algorithm is introduced to allow the encryption/decryption of information signals. In contrast to what is found in the literature, the proposed scheme uses hyperchaotic underactuated oscillators (transmitter/receiver), which synchronize even in the presence of bounded perturbations in all states. Simulations are provided to validate the theoretical results.