Title :
Breaking two secure communication systems based on chaotic masking
Author :
Álvarez, G. ; Montoya, F. ; Romera, M. ; Pastor, G.
Author_Institution :
Instituto de Fisica, Consejo Superior de Investigaciones Cientificas, Madrid, Spain
Abstract :
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.
Keywords :
chaotic communication; cryptography; nonlinear systems; state-space methods; synchronisation; telecommunication security; Lorenz system; chaos synchronization; chaotic masking; chaotic modulation; chaotic system parameter values; cryptography; data security; nonlinear state-space observers; nonlinear systems; secure communication systems; state-space methods; telecommunication; transmitter structure; Chaos; Chaotic communication; Communication system security; Cryptography; Data security; Information security; Nonlinear systems; Oscillators; State-space methods; Transmitters; Chaos; cryptography; nonlinear systems; security of data; state-space methods; telecommunication;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2004.836047
