2024-03-28T21:59:56Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/179402019-07-15T09:24:30Zcom_10261_113com_10261_4col_10261_366
00925njm 22002777a 4500
dc
Orúe, Amalia B.
author
Fernández Mármol, Verónica
author
Álvarez Marañón, Gonzalo
author
Pastor, Gerardo
author
Romera, Miguel
author
Montoya Vitini, Fausto
author
Sánchez Ávila, Carmen
author
Shujun, Li
author
2009-10-22T12:31:11Z
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.
http://hdl.handle.net/10261/17940
10.1142/S0218127409023652
Chua’s attractor
Chaotic masking
Cryptanalysis
Breaking a SC-CNN-based Chaotic Masking Secure Communication System