期刊
OPTICS AND LASERS IN ENGINEERING
卷 102, 期 -, 页码 170-180出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlaseng.2017.11.001
关键词
Image encryption; semiconductor ring laser; Chaotic synchronization; Physical random bit generator
类别
资金
- National Natural Science Foundation of China [61674119, 61306061]
- National Postdoctoral Program for innovative Talents in China [BX201600118]
- Young Talent fund of University Association for Science and Technology in Shaanxi, China [20160109]
- china Postdoctoral Science Foundation [2017M613072]
- Natural Science Basic Research Plan in Shaanxi Province of China [2017JM6002]
- China 111 project [B08038]
In this paper, a novel image encryption algorithm based on synchronization of physical random bit generated in a cascade-coupled semiconductor ring lasers (CCSRL) system is proposed, and the security analysis is performed. In both transmitter and receiver parts, the CCSRL system is a master-slave configuration consisting of a master semiconductor ring laser (M-SRL) with cross-feedback and a solitary SRL (S-SRL). The proposed image encryption algorithm includes image preprocessing based on conventional chaotic maps, pixel confusion based on control matrix extracted from physical random bit, and pixel diffusion based on random bit stream extracted from physical random bit. Firstly, the preprocessing method is used to eliminate the correlation between adjacent pixels. Secondly, physical random bit with verified randomness is generated based on chaos in the CCSRL system, and is used to simultaneously generate the control matrix and random bit stream. Finally, the control matrix and random bit stream are used for the encryption algorithm in order to change the position and the values of pixels, respectively. Simulation results and security analysis demonstrate that the proposed algorithm is effective and able to resist various typical attacks, and thus is an excellent candidate for secure image communication application. (C) 2017 Elsevier Ltd. All rights reserved.
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