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Partial identification of Lorenz system and its application to key space reduction of chaotic cryptosystems

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1 Author(s)
E. Solak ; Nat. Res. Inst. of Electron. & Cryptology, Kocaeli, Turkey

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.

Published in:

IEEE Transactions on Circuits and Systems II: Express Briefs  (Volume:51 ,  Issue: 10 )