Journal
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
Volume 18, Issue 3, Pages 584-600Publisher
ELSEVIER
DOI: 10.1016/j.cnsns.2012.08.010
Keywords
Intrinsic features of bit distributions; Chaos; Cryptography; Image encryption
Categories
Funding
- National Natural Science Foundation of China [60872040]
- Program for Liaoning Excellent Talents in University
- Natural Science Foundation of Liaoning Province, China [20082037]
- Fundamental Research Funds for the Central Universities [N110617001]
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In recent years, a variety of chaos-based image encryption algorithms have been proposed. Most of them employ the confusion-diffusion architecture and operate at the pixel level. In this paper, we analyze the intrinsic features of the bit distributions, the high correlation among bit planes and other issues related to the bit information of an image. Due to the superior characteristics of bit-level operations and the intrinsic bit features of the image, an expand-and-shrink strategy is employed to shuffle the image with reconstructed permuting plane. Simulations have been carried out and the results demonstrate the superior security and high efficiency of the proposed scheme. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.
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