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oai:recercat.cat:2117/241352025-07-17T12:54:54Zcom_2072_1033col_2072_452950

A secure communication system based on a modified chaotic chua oscillator Zapateiro, Mauricio Acho Zuppa, Leonardo Vidal Seguí, Yolanda Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III Universitat Politècnica de Catalunya. CoDAlab - Control, Modelització, Identificació i Aplicacions Àrees temàtiques de la UPC::Matemàtiques i estadística Chaotic behavior in system Chaos Secure communication Chua oscillator Caos (Teoria de sistemes) In this paper we propose a new scheme for secure communications us- ing a modified Chua oscillator. A modification of the oscillator is proposed in order to facilitate the decryption. The communication system requires two channels for transmitting the message. One of the channels transmits a chaotic signal generated by the oscillator and is used for synchronization. The second channel transmits the message encrypted by a nonlinear function. This function is built in terms of one of the chaotic signals, different from that sent on the first channel. In the receiver side, a synchronizer reconstructs the chaotic oscillator signals, one of which is used for the decryption of the message. The synchronization system is designed via Lyapunov theory and chaoticity proves via Poincar ´e maps and Lyapunov exponents will be pro- vided in order to demonstrate the feasibility of our system. Numerical simulations will be used to evaluate the performance of the system. Postprint (published version) 2014 Conference lecture Zapateiro, M.; Acho, L.; Vidal, Y. A secure communication system based on a modified chaotic chua oscillator. A: Chaotic Modeling and Simulation International Conference. "Proceedings of the 7th Chaotic Modeling and Simulation International Conference". Lisbon: 2014, p. 75-84. https://hdl.handle.net/2117/24135 eng http://www.cmsim.org/images/1_Proceedings_CHAOS2014_T-Z.pdf http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access Attribution-NonCommercial-NoDerivs 3.0 Spain 10 p. application/pdf