This paper describes the security weakness of two generalized nonlinear state-space observers-based approaches for both chaos synchronization and secure communication, using chaotic masking and chaotic modulation of a Lorenz system. We show that the security is compromised without any knowledge of the chaotic system parameter values and even without knowing the transmitter structure.
Published in:
Circuits and Systems II: Express Briefs, IEEE Transactions on
(Volume:51
,
Issue:
10
)
Date of Publication: Oct. 2004