期刊
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
卷 18, 期 11, 页码 3075-3085出版社
ELSEVIER
DOI: 10.1016/j.cnsns.2013.04.008
关键词
Image encryption; Intertwining chaos map; Reversible cellular automata
类别
资金
- National Natural Science Foundation of China [61173183, 60973152, 60573172]
- Superior University Doctor Subject Special Scientific Research Foundation of China [20070141014]
- Program for Liaoning Excellent Talents in University [LR2012003]
- National Natural Science Foundation of Liaoning province [20082165]
- Fundamental Research Funds for the Central Universities [DUT12JB06]
In this paper, a novel image encryption scheme is proposed based on reversible cellular automata (RCA) combining chaos. In this algorithm, an intertwining logistic map with complex behavior and periodic boundary reversible cellular automata are used. We split each pixel of image into units of 4 bits, then adopt pseudorandom key stream generated by the intertwining logistic map to permute these units in confusion stage. And in diffusion stage, two-dimensional reversible cellular automata which are discrete dynamical systems are applied to iterate many rounds to achieve diffusion on bit-level, in which we only consider the higher 4 bits in a pixel because the higher 4 bits carry almost the information of an image. Theoretical analysis and experimental results demonstrate the proposed algorithm achieves a high security level and processes good performance against common attacks like differential attack and statistical attack. This algorithm belongs to the class of symmetric systems. (C) 2013 Elsevier B. V. All rights reserved.
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