Physical generation of random numbers using an asymmetrical Boolean network  

作　　者：Hai-Fang Liu Yun-Cai Wang Lu-Xiao Sang Jian-Guo Zhang 刘海芳;王云才;桑鲁骁;张建国(Key Laboratory of Advanced Transducers and Intelligent Control System,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China;College of Physics and Optoelectronics,Taiyuan University of Technology,Taiyuan 030024,China;Guangdong Provincial Key Laboratory of Photonics Information Technology,Guangzhou 510006,China;School of Information Engineering,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]Key Laboratory of Advanced Transducers and Intelligent Control System,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China [2]College of Physics and Optoelectronics,Taiyuan University of Technology,Taiyuan 030024,China [3]Guangdong Provincial Key Laboratory of Photonics Information Technology,Guangzhou 510006,China [4]School of Information Engineering,Guangdong University of Technology,Guangzhou 510006,China

出　　处：《Chinese Physics B》2021年第11期297-303,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.61731014,61671316,61961136002,and 61927811);the Fund from the Shanxi Scholarship Council of China(Grant No.2017-key-2).

摘　　要：Autonomous Boolean networks(ABNs)have been successfully applied to the generation of random number due to their complex nonlinear dynamics and convenient on-chip integration.Most of the ABNs used for random number generators show a symmetric topology,despite their oscillations dependent on the inconsistency of time delays along links.To address this issue,we suggest an asymmetrical autonomous Boolean network(aABN)and show numerically that it provides large amplitude oscillations by using equal time delays along links and the same logical gates.Experimental results show that the chaotic features of aABN are comparable to those of symmetric ABNs despite their being made of fewer nodes.Finally,we put forward a random number generator based on aABN and show that it generates the random numbers passing the NIST test suite at 100 Mbits/s.The unpredictability of the random numbers is analyzed by restarting the random number generator repeatedly.The aABN may replace symmetrical ABNs in many applications using fewer nodes and,in turn,reducing power consumption.

关 键 词：autonomous Boolean networks random numbers CHAOS UNPREDICTABILITY 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]