Abstract
Many encryption algorithms are directly based on the matrix transformation or their own definition of strict rules. We try to propose a new digital image encryption scheme to simulate physical phenomena rather than deliberately create rigid rules. First, the paper takes each pixel of the image as a Brownian particle, using the Monte Carlo method to simulate a Brownian motion, thus effectively scrambling the image. Then we diffuse the image with PWLCM chaotic system. To enhance the sensitivity of the key and the plaintext, we modified the initial value of PWLCM chaotic system. Experimental results and security analysis show that our method has good performance and can be used in image encryption and transmission.
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Acknowledgements
This research is supported by the National Natural Science Foundation of China (Nos: 61370145, 61173183, and 60973152), the Doctoral Program Foundation of Institution of Higher Education of China (No: 20070141014), Program for Liaoning Excellent Talents in University (No: LR2012003), the National Natural Science Foundation of Liaoning province (No: 20082165), and the Fundamental Research Funds for the Central Universities (No: DUT12JB06).
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Wang, X., Xu, D. A novel image encryption scheme based on Brownian motion and PWLCM chaotic system. Nonlinear Dyn 75, 345–353 (2014). https://doi.org/10.1007/s11071-013-1070-x
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DOI: https://doi.org/10.1007/s11071-013-1070-x