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Breaking a SC-CNN-based Chaotic Masking Secure Communication System

Orue, A, Fernandez, V, Alvarez, G, Pastor, G, Romera, M, Montoya, F, Sanchez-Avila, C and Li, SJ (2009) Breaking a SC-CNN-based Chaotic Masking Secure Communication System International Journal of Bifurcation and Chaos, 19 (4). 1329 - 1338. ISSN 0218-1274

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Abstract

This paper studies the security of a chaotic cryptosystem based on Chua's circuit and implemented with State Controlled Cellular Neural Networks (SC-CNN). Here, we prove that the plaintext can be retrieved by bandpass filtering of the ciphertext or by using an imperfect decoder with wrong receiver parameters. In addition, we find that the key space of the system can be reduced notably, and the required resolution of the parameter values to recover a meaningful plaintext is as coarse as 5%, easing a brute-force attack. The system parameters can be determined with high precision through the analysis of the decoding error produced by the mismatch between the parameters of receiver and transmitter.

Item Type: Article
Additional Information: This is an electronic version of an article published as International Journal of Bifurcation and Chaos , Volume 19, Issue 4, 2009, pp 1329-1338 DOI: 10.1142/S0218127409023652 © World Scientific Publishing Company. http://www.worldscinet.com/ijbc/13/1310/S0218127403008442.html
Uncontrolled Keywords: Chua's attractor, cryptanalysis, chaotic masking, SYNCHRONIZATION, CIRCUIT
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Divisions: Faculty of Engineering and Physical Sciences > Computing Science
Depositing User: Symplectic Elements
Date Deposited: 12 Jun 2012 09:20
Last Modified: 23 Sep 2013 19:26
URI: http://epubs.surrey.ac.uk/id/eprint/532443

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