A Physical Layer Security Method based on Hybrid Optical Encryption

GONG Xiao-xue; XUAN Ran; ZHANG Qi-han; LI Rui

doi:10.13756/j.gtxyj.2022.03.002

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A Physical Layer Security Method based on Hybrid Optical Encryption

更新时间：2022-06-15

- A Physical Layer Security Method based on Hybrid Optical Encryption
- Study on Optical Communications Issue 3, Pages: 7-10(2022)
- 作者机构：
  
  1.重庆邮电大学　通信与信息工程学院，重庆　400065
  2.东北大学　计算机科学与工程学院，沈阳　110819
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2022.03.002
  CLC： TN918.6
- Published：10 June 2022，
  
  Received：07 October 2021，
扫描看全文
GONG Xiao-xue, XUAN Ran, ZHANG Qi-han, et al. A Physical Layer Security Method based on Hybrid Optical Encryption. [J]. Study on Optical Communications (3):7-10(2022)
DOI：

GONG Xiao-xue, XUAN Ran, ZHANG Qi-han, et al. A Physical Layer Security Method based on Hybrid Optical Encryption. [J]. Study on Optical Communications (3):7-10(2022) DOI： 10.13756/j.gtxyj.2022.03.002.

摘要

针对目前光网络物理层面临的窃听安全问题，文章提出了一种基于高非线性光纤(HNLF)和超结构光纤布拉格光栅(SSFBG)新的混合光加密方案。方案中采用简并四波混频(FWM)效应对用户信息进行加解密，并采用光编码技术对密钥信息进行编解码，编码的同时实现了密钥信号的隐匿传输。通过对比信道中传输的加密信号波形和原始发送信号波形衡量系统的安全性，并通过系统接收端误码率来衡量系统的有效性。仿真结果表明，使用了文章所提新的混合光加密方案后，用户数据信息的频率和相位发生扰乱，编码后的密钥信号光功率低至-34.4 dBm，因此窃听信道既无法得到有效数据信息，也检测不到密钥信号，从而实现了正交相移键控(QPSK)信号的安全传输。

Abstract

Aiming at the current eavesdropping security issues in the physical layer of optical networks

a new hybrid optical encryption scheme based on Highly Nonlinear Fiber (HNLF) and Super Structured Fiber Bragg Grating (SSFBG) is proposed in this paper. In the scheme

degenerate Four Wave Mixing (FWM) is used to encrypt and decrypt user information

and optical coding technology is used to encode and decode the key information. Therefore

the encoding and secret transmission of the key signal can be realized simultaneously. The security of the system is measured by comparing the waveform of the encrypted signal transmitted in the channel with the waveform of the original transmitted signal

and the effectiveness of the system is measured by the bit error rate at the system receiver side. The simulation results show that the frequency and phase of the user data information are disturbed

and the optical power of the encoded key signal is as low as -34.4 dBm. Therefore

the eavesdropping channel cannot obtain effective data information nor detect the key signal

which demonstrates the safe transmission of Quadrature Phase Shift Keying (QPSK) signal.

关键词

光加密光编码隐匿传输高非线性光纤超结构光纤布拉格光栅

Keywords

optical encryptionoptical codinghidden transmissionHNLFSSFBG

references

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Li X, Pan W, Luo B, et al. Mismatch Robustness and Security of Chaotic Optical Communications based on Injection-locking Chaos Synchronization[J]. IEEE Journal of Quantum Electronics, 2006, 42(9): 953-960.

Rontani D, Locquet A, Sciamanna M, et al. Multiple-access Optical Chaos-based Communications using Optoelectronic Systems[C]//Conference on Lasers and Electro-Optics. San Jose, California , USA: Optical Society of America, 2010: CFC5.

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