期刊
INFORMATION SCIENCES
卷 339, 期 -, 页码 237-253出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ins.2016.01.017
关键词
Chaotic map; Chaotic encryption; Confusion and diffusion; Image encryption
资金
- Macau Science and Technology Development Fund [FDCT/016/2015/A1]
- Research Committee at University of Macau [MYRG2014-00003-FST, MYRG113 (Y1-L3)-FST12-ZYC, MRG001/ZYC/2013/FST]
With complex properties of ergodicity, unpredictability and sensitivity to initial states, chaotic systems are widely used in cryptography. This paper proposes a two-dimensional Logistic-adjusted-Sine map (2D-LASM). Performance evaluations show that it has better ergodicity and unpredictability, and a wider chaotic range than many existing chaotic maps. Using the proposed map, this paper further designs a 2D-LASM-based image encryption scheme (LAS-IES). The principle of diffusion and confusion are strictly fulfilled, and a mechanism of adding random values to plain-image is designed to enhance the security level of cipher-image. Simulation results and security analysis show that LAS-IES can efficiently encrypt different kinds of images into random-like ones that have strong ability of resisting various security attacks. (C) Elsevier Inc. All rights reserved.
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