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In this brief, we present a novel adaptive method to synchronize with a partially known Lorenz chaotic system. The method exploits a novel expression of the Lorenz system to design a parameter identifier for its unknown parameter. We also apply the result to investigate the security of a cryptosystem previously proposed in the literature and show that the method can be used to eavesdrop on an encrypted communication channel. Numerical simulations are presented to illustrate the results.
Circuits and Systems II: Express Briefs, IEEE Transactions on (Volume:51 , Issue: 10 )
Date of Publication: Oct. 2004