Electro-optic chaotic system based on time delay feature hiding and key space enhancement based on chaotic post-processing

被引:1
|
作者
Gong, XiaoYang [1 ]
Zou, Guoyang [1 ]
Wang, Hongxiang [1 ]
Ji, Yuefeng [1 ]
Zhang, Yu [2 ]
机构
[1] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
[2] Acad Broadcasting Sci, NRTA, Beijing 102206, Peoples R China
关键词
WIDE-BAND CHAOS; SEMICONDUCTOR-LASERS; OPTICAL CHAOS; SIGNATURE; SYNCHRONIZATION; GENERATION; CONCEALMENT; SUPPRESSION; COMPLEXITY; FEEDBACK;
D O I
10.1364/AO.457290
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
To improve the output performance of the classical all-optical chaotic system and solve the security problems of its key exposure and small key space, a new chaotic system, to the best of our knowledge, based on logistic map post-processing is proposed. In terms of the general output performance of the system, the spectrum of the proposed system is flatter than the classical system. Through a bifurcation diagram and permutation entropy analysis, it is found that the output of the system is extremely complex. In terms of security, the simulation results show that, with a reasonable selection of system parameters, key hiding can be achieved under a large parameter range. Moreover, through the sensitivity analysis of logistic parameters, it can be seen that the introduction of logistic parameters can improve the key space of the system and further improve the security of the system. (C) 2022 Optica Publishing Group
引用
收藏
页码:5098 / 5105
页数:8
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