10 Gb/s classical secure key distribution based on temporal steganography and private chaotic phase scrambling  

作　　者：ZHENSEN GAO ZHITAO DENG LIHONG ZHANG XULIN GAO YUEHUA AN ANBANG WANG SONGNIAN FU ZHAOHUI LI YUNCAI WANG YUWEN QIN 

机构地区：[1]School of Information Engineering,Guangdong University of Technology,Guangzhou 510006,China [2]Pengcheng Laboratory,Shenzhen 518062,China [3]Key Laboratory of Photonic Technology for Integrated Communication and Sensing,Ministry of Education,Guangzhou 510006,China [4]School of Optoelectronic Engineering,Guangdong Polytechnic Normal University,Guangzhou 510665,China [5]School of Electrical and Information Technology,Sun Yat-sen University,Guangzhou 510006,China

出　　处：《Photonics Research》2024年第2期321-330,共10页光子学研究（英文版）

基　　金：National Key Research and Development Program of China(2023YFB2906000);National Natural Science Foundation of China(62004047,62375055,U2001601,U22A2087);Guangdong Basic and Applied Basic Research Foundation(2023B1515020088);Guangdong Introducing Innovative and Entrepreneurial Teams of“The Pearl River Talent Recruitment Program”(2019ZT08X340)。

摘　　要：Secure distribution of high-speed digital encryption/decryption keys over a classical fiber channel is strongly pursued for realizing perfect secrecy communication systems.However,it is still challenging to achieve a secret key rate in the order of tens of gigabits per second to be comparable with the bit rate of commercial fiber-optic systems.In this paper,we propose and experimentally demonstrate a novel solution for high-speed secure key distribution based on temporal steganography and private chaotic phase scrambling in the classical physical layer.The encryption key is temporally concealed into the background noise in the time domain and randomly phase scrambled bit-by-bit by a private chaotic signal,which provides two layers of enhanced security to guarantee the privacy of key distribution while providing a high secret key rate.We experimentally achieved a record classical secret key rate of 10 Gb/s with a bit error rate lower than the hard-decision forward error correction(HD-FEC)over a 40 km standard single mode fiber.The proposed solution holds great promise for achieving high-speed key distribution in the classical fiber channel by combining steganographic transmission and chaotic scrambling.

关 键 词：CHAOTIC distribution PHASE 

分 类 号：TN929.11[电子电信—通信与信息系统] TN918.4[电子电信—信息与通信工程]