In this paper we propose a new cryptosystem, based on a new time-delayed chaotic system. Two chaotic signals are sent by the transmitter: the first one is aimed at synchronizing the receiver, which is proved through the resolution of a Linear Matrix Inequality (LMI). The transmission of a second chaotic signal enables the design of a new way to encrypt a message: we perform a kind of modulation of the frequency of a chaotic signal generated by the transmitter, depending on the message and we propose a method to recover the message. The efficiency of this new cryptosystem is illustrated by the encryption, transmission and recovery of a picture. The security of the proposed cryptosystem is discussed at the end of the article. © 2005 IEEE.
CITATION STYLE
Cherrier, E., Boutayeb, M., & Ragot, J. (2005). Observers based synchronization and input recovery for a class of nonlinear chaotic models. In Proceedings of the 44th IEEE Conference on Decision and Control, and the European Control Conference, CDC-ECC ’05 (Vol. 2005, pp. 7031–7036). https://doi.org/10.1109/CDC.2005.1583294
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