Symbol-Block Ciphering With CBC Mode for Secure Digital Coherent Optical Communication

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-06-17 DOI:10.1109/LPT.2025.3580417

Reika Suketomo;Keiji Shimada;Hodaka Amano;Takahiro Kodama

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引用次数: 0

Abstract

In recent years, the growing demand for security in optical fiber communications, driven by the development of high-capacity communications based on digital coherent transmission technology, has necessitated advanced physical-layer security measures. This study focuses on symbol block ciphering techniques, evaluating the security performance of applying the cipher block chaining (CBC) mode with a 2-bit key. Specifically, dual-polarized-16 quadrature amplitude modulation signals were encrypted using CBC mode, and the signal quality during transmission over 2240 km of standard single-mode fiber was examined through numerical analysis and experiments. The results demonstrated that CBC mode enables proper signal recovery even in transmission paths affected by nonlinear effects, albeit with slight performance penalties regarding optical signal to noise ratio and transmission distance. Furthermore, by comparing the reception accuracy of an eavesdropper without the encryption key, the study highlighted the potential of CBC mode to provide enhanced security.

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安全数字相干光通信的CBC模式符号块加密

近年来，在基于数字相干传输技术的大容量通信发展的推动下，光纤通信对安全的需求日益增长，需要先进的物理层安全措施。本文研究了符号块加密技术，评估了使用2位密钥的密码块链（CBC）模式的安全性能。具体而言，采用CBC模式对双偏振16正交调幅信号进行加密，并通过数值分析和实验对2240 km标准单模光纤传输过程中的信号质量进行了检测。结果表明，CBC模式即使在受非线性影响的传输路径中也能实现适当的信号恢复，尽管在光信噪比和传输距离方面有轻微的性能损失。此外，通过比较没有加密密钥的窃听者的接收准确性，该研究强调了CBC模式提供增强安全性的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.