期刊
OPTICS AND LASERS IN ENGINEERING
卷 51, 期 4, 页码 472-480出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlaseng.2012.11.001
关键词
Chaos-based discrete fractional random transform; Chirikov standard map; Discrete Chirikov standard transform; Chaotic random phase masks; Optical image encryption
类别
资金
- Natural Science Foundation Project of CQ CSTC [2011jjjq40001]
- National Natural Science Foundation of China [61070246, 61103211]
- Graduate Innovation Foundation of Chongqing University [CDJXS12180009]
- Fundamental Research Funds for the Central Universities [CDJZR10180003]
In this paper, we design a novel discrete fractional random transform based on 2D chaotic logistic maps and two chaotic random masks resulting from Chirikov standard map. Then, a double optical image encryption scheme using discrete Chirikov standard map and chaos-based discrete fractional random transform is proposed. The discrete version of Chirikov standard map is employed to scramble the pixels of two images due to its property of area-preserving. Two scrambled images are regarded as the amplitude and phase of the synthesized input signal. Moreover, with the help of the chaos-based discrete fractional random transform and two chaotic random masks, double random phase encoding is utilized to complete encryption. Numerical simulations demonstrate the effectiveness and the security of the proposed scheme. (C) 2012 Elsevier Ltd. All rights reserved.
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