Security problems with a SC-CNN-based Chaotic Masking Secure Communication System

Details Security problems with a SC-CNN-based Chaotic Masking Secure Communication System Security problems with a SC-CNN-based Chaotic Masking Secure Communication System

2007-06-20

arxiv.org/abs/0706.2979v1

Nonlinear Sciences

Chaotic Dynamics

16 pages; 9 figures

Scientific paper

This paper studies the security of a chaotic cryptosystem based on the Chua circuit and implemented with State Controlled Cellular Neural Networks. It is shown that the plaintext can be retrieved by ciphertext band-pass filtering after an imperfect decoding with wrong receiver parameters. It is also shown that the key space of the system can be notably reduced easing a brute force attack. The system parameters were determined with high precision through the analysis of the decoding error produced by the mismatch between receiver and transmitter parameters.

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