摘要
量子噪声随机加密(QNRC)是一种新兴的提高光纤传输安全性的物理层加密方案。基于窃听信道模型,以合法信道容量和信息截获概率为基本指标,对相移键控(PSK)QNRC系统的传输性能和安全性能进行定量评估,并分析了介观态功率、进制数以及量子噪声掩盖的量子态数对系统性能的影响。仿真结果表明:为了提高系统的传输性能和安全性能,发送端需采用光放大器;在保证系统传输性能的同时,可适当减小介观态功率来提高系统的安全性;较高的进制数可有效地提高PSK-QNRC系统的安全性,且不影响其传输性能;系统数据安全性主要受限于量子噪声掩盖的量子态数。
Quantum-noise randomized cipher(QNRC)is an emerging physical layer encryption scheme to improve the security of optical fiber transmission.Based on the wire-tap channel model,the transmission performance and security performance of phase shift keying(PSK)QNRC system are evaluated quantitatively with legal channel capacity and information interception probability as the performance metric,and the effects of mesoscopic power,mechanism and number of quantum state masked by quantum noise on system performance are also analyzed.The simulation results show that in order to improve the transmission performance and security performance of the system,it is necessary to use optical amplifier at the transmitting end.While ensuring the transmission performance of the system,the mesoscopic power can be reduced appropriately to improve the system′s security.Higher mechanism can improve the security of PSK-QNRC system effectively without affecting its transmission performance.The security of data is mainly limited by the number of quantum states masked by quantum noise.
作者
陈毓锴
蒲涛
郑吉林
李云坤
郁楠
曹阳
CHEN Yukai;PU Tao;ZHENG Jilin;LI Yunkun;YU Nan;CAO Yang(Communications Engineering College,Army Engineering University of PLA,Nanjing 210007,China;Troop 61623 of PLA,Beijing 100840,China;Troop 31121 of PLA,Fuzhou 350001,China)
出处
《量子电子学报》
CAS
CSCD
北大核心
2021年第6期846-854,共9页
Chinese Journal of Quantum Electronics
基金
国家自然科学基金,61974165,61901480。
关键词
光通信
量子噪声随机加密
合法信道容量
信息截获概率
optical communication
quantum-noise random cipher
legal channel capacity
information interception probability