Cryptosystems Based on Synchronized Chua's Circuits

Authors:	César Cruz-Hernández, CICESE, Mexico Serrano-Guerrero Hazael, CICESE, Mexico
Topic:	2.3 Non-Linear Control Systems
Session:	Nonlinear Observers and Output Feedback
Keywords:	Chaos synchronization, Chua's circuit, observers, secure communication, encryption, experimental realization.

Abstract

An experimental study of physical realization to encrypt private information using chaotic cryptosystems is presented. In particular, we use chaos synchronization and a complex encryption function to hide the messages. In both cryptosystems; encryption and synchronization are completely separated with no interference between them. We apply this approach to encrypt private analog and binary information signals. The utilization of chaos synchronization and cryptography seems to make a contribution to the development of communication systems with higher security.