面向混沌激光熵源的安全随机数提取  

Secure random number extraction for chaotic laser entropy source

作　　者：李瑞敏 李璞 蔡强 王冰洁 马荔 徐兵杰 LI Ruimin;LI Pu;CAI Qiang;WANG Bingjie;MA Li;XU Bingjie(Key Laboratory of Advanced Transducers and Intelligent Control System,Ministry of Education,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China;Guangdong Provincial Key Laboratory of Information Photonics Technology,Guangzhou,Guangdong 510006,China;Science and Technology on Communication Security Laboratory,Institute of Southwestern Communication,Chengdu,Sichuan 610041,China)

机构地区：[1]太原理工大学新型传感器与智能控制教育部重点实验室,山西太原030024 [2]广东工业大学广东省信息光子技术重点实验室,广东广州410006 [3]西南通信研究所保密通信实验室,四川成都610041

出　　处：《光电子．激光》2023年第5期536-542,共7页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(62175177,U19A2076,61927811,61731014);山西省自然科学基金(201901D211116,201901D211077);四川省科技计划资助项目(2022YFG0330);广东省创新创业团队计划和保密通信重点实验室稳定计划支持项目(2022)资助项目。

摘　　要：基于混沌激光的随机数发生器可以实现大量高速的真随机数产生。然而,受随机数产生过程中引入的额外技术噪声影响,原始随机数无法提供真随机性。为了从信息论的角度实现安全随机数的产生,必须定量评估熵源产生的随机性。本文中通过实验搭建基于混沌激光的随机数产生装置,使用条件最小熵评估原始随机数中可提取的真随机性。同时,通过更换不同的器件讨论关键参数对原始随机性的影响。在原始随机数的后处理提取过程中使用信息论可证安全的Toeplitz提取器,最终实现了安全随机数的产生。The random number generator based on chaotic laser can generate a large number of true random numbers at high speed.However,raw random numbers cannot provide true randomness due to the additional technical noise introduced in the random number generation process.To achieve secure random number generation from information-theoretic standpoint,the randomness generated by entropy source must be quantitatively evaluated.In this paper,a chaotic laser-based random number generation device is experimentally constructed and the true randomness that can be extracted from raw random numbers is evaluated by conditional minimum entropy.Simultaneously,the effect of key parameters on the original randomness is discussed by replacing different devices.An information-theoretically falsifiable secure Toeplitz extractor is applied in the post-processing extraction process.Finally,the generation of secure random numbers is implemented.

关 键 词：光通信 安全随机数 条件最小熵 混沌激光 随机性 信息论 

分 类 号：TN249[电子电信—物理电子学]