信号处理2025，Vol.41Issue(10)：1591-1613,23.DOI:10.12466/xhcl.2025.10.001
面向语义通信的保密技术研究
Research on Semantic Communication-Oriented Confidentiality Technologies
摘要
Abstract
Confidentiality technologies play a pivotal role in driving the continuous advancement of semantic communications.Herein,first,confidentiality technologies in traditional communication,including cryptography based encryption,physical layer key generation,artificial noise,beamforming,and covert communication,are reviewed.Next,existing research on confidential semantic communication—cryptography-encrypted,covert,physical layer-encrypted,and application layer-encrypted—are systematically summarized,and challenges in this area are analyzed.Subsequently,a super-resolution reconstruction-based end-to-end encryption transmission scheme for image semantic communication is proposed;this includes semantic extraction,joint source-channel coding,encryption and decryption,and residual dense network-based super-resolution reconstruction modules.This scheme avoids the high complexity introduced by the complex encryption algorithm and effectively resists eavesdroppers.Additionally,the scheme deploys a super-resolution reconstruction module at the receiver to recover the image details lost due to encryption and decryption,and channel noise,and then improves the visual quality of the image.By comparing the transmission performance under different modulations,signal-to-noise ratio,and scaling factors,the simulation results in additive white Gaussian noise channel verify that the scheme can balance communication efficiency and reconstructed image quality under the premise of ensuring transmission security.Finally,some future research directions in semantic communication,including lightweight design of confidential semantic communication,multimodal encrypted semantic communication,semantic importance-based encrypted semantic communication,semantic privacy protection in multi eavesdropping threat environment,and intention oriented secure communication between machines,are prospected.关键词
语义通信/无线安全/保密/加密Key words
semantic communication/wireless security/confidentiality/encryption分类
信息技术与安全科学引用本文复制引用
孟锐,高嵩,张智迪,许晓东..面向语义通信的保密技术研究[J].信号处理,2025,41(10):1591-1613,23.基金项目
国家重点研发计划(2020YFB1806905) （2020YFB1806905）
国家自然科学基金(62501066,U24B20131) （62501066,U24B20131）
北京市自然科学基金(L242012) The National Key R&D Program of China(2020YFB1806905) （L242012）
The National Natural Science Foundation of China(62501066,U24B20131) （62501066,U24B20131）
Beijing Natural Science Foundation(L242012) （L242012）
