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混沌辅助的强度调制量子噪声流加密系统研究
Intensity Modulated Quantum Noise Stream Cipher System Assisted by Optical Chaos
- 光通信研究 2025年第6期
- 作者机构：
西南交通大学 信息科学与技术学院，成都 611756
- 作者简介：
辜思佳（2001-），女，四川眉山人。硕士，主要研究方向为光纤通信系统。
蒋林，副教授。E-mail：linjiang@swjtu.edu.cn
- 基金信息：国家自然科学基金资助项目(62431024;U22A2089);山东省重点研发计划资助项目(2023CXPT100);四川省自然科学基金资助项目(2025NSFJQ0052)
DOI：10.13756/j.gtxyj.2025.250231
中图分类号： TN929收稿：2025-06-23，
修回：2025-08-03，
纸质出版：2025-12-10
- 稿件说明：
移动端阅览
辜思佳，蒋林，闫连山，等. 混沌辅助的强度调制量子噪声流加密系统研究[J]. 光通信研究，2025(6): 250231.
Gu S J, Jiang L, Yan L S, et al. Intensity Modulated Quantum Noise Stream Cipher System Assisted by Optical Chaos[J]. Study on Optical Communications, 2025(6): 250231.
辜思佳，蒋林，闫连山，等. 混沌辅助的强度调制量子噪声流加密系统研究[J]. 光通信研究，2025(6): 250231. DOI： 10.13756/j.gtxyj.2025.250231.
Gu S J, Jiang L, Yan L S, et al. Intensity Modulated Quantum Noise Stream Cipher System Assisted by Optical Chaos[J]. Study on Optical Communications, 2025(6): 250231. DOI： 10.13756/j.gtxyj.2025.250231.
摘要
【目的】
2
为进一步提升强度调制（IM）/量子噪声流加密（QNSC）系统的安全性，文章提出了一种混沌加密辅助的IM/QNSC系统安全性增强方案。
【方法】
2
在文章所提方案中，合法发送端将低阶4电平脉冲幅度调制（PAM-4）信号加密为超高阶PAM-256信号，然后通过非线性延迟混沌源产生的强度混沌加密该超高阶PAM信号，以增强IM/QNSC系统的安全性。
【结果】
2
文章对所提方案在56和112 Gbit/s的IM/QNSC色散管理传输系统中进行了数值验证。结果表明，在7%硬判决-前向纠错（HD-FEC）阈值下，56和112 Gbit/s的加密系统分别实现了400和300 km的传输；在20%软判决-前向纠错（SD-FEC）阈值下，分别实现了700和600 km的传输。分析文章所提方案的安全性发现，该方案的噪声掩盖数（NMS）和检测失败概率（DFP）高于原IM/QNSC系统。
【结论】
2
混沌加密的辅助放大了QNSC系统中的窃听噪声，与原IM/QNSC系统相比，系统的安全性得到了提高。
Abstract
【Objective】
2
To further enhance the security of the Intensity Modulated (IM) / Quantum Noise Stream Cipher (QNSC) system
this paper proposes a security enhancement scheme for the IM/QNSC system assisted by chaotic encryption.
【Methods】
2
In this scheme
the legitimate transmitter encrypts the low-order 4-level Pulse Amplitude Modulation (PAM-4) signal into an ultra-high-order PAM-256 signal. Then it uses the intensity chaos generated by a nonlinear delayed chaos source to encrypt the ultra-high-order PAM signal
so as to enhance the security of the IM/QNSC system.
【Results】
2
This scheme was numerically verified in IM/QNSC dispersion-managed transmission systems with rates of 56 and 112 Gbit/s. The results show that under the 7% Hard Decision-Forward Error Correction (HD-FEC) threshold
the 56 and 112 Gbit/s encrypted systems achieve transmissions of 400 and 300 km. Under the 20% Soft Decision-Forward Error Correction (SD-FEC) threshold
they achieve transmissions of 700 and 600 km. The security analysis of the scheme shows that the Number of Masked Symbols (NMS) and Detection Failure Probability (DFP) of the scheme are higher than those of the original IM/QNSC system.
【Conclusion】
2
Chaotic encryption assistance amplifies the eavesdropping noise in the QNSC system. Compared with the original IM/QNSC system
it improves the system security.
关键词
Keywords
references
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高欣 , 李苗 , 张燕玲 . 基于混沌映射的光纤通信物理层抗截获方法 [J ] . 光通信研究 , 2023 ( 2 ): 29 - 33 .
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Hao N , Jiang L , Feng J , et al . Numerical Investigations of M -QAM Chaotic Optical Communication with Amplitude and Phase Encryption [J ] . Journal of Lightwave Technology , 2024 , 42 ( 15 ): 5141 - 5147 .
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