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Defence Technology（防务技术） 2024年第1期31卷 537-543页

作者： Huang Hailong Mohsen Eskandari Andrey V.Savkin Wei Ni The Department of Aeronautical and Aviation Engineering The Hong Kong Polytechnic UniversityHong KongChina School of Electrical Engineering and Telecommunications University of New South WalesSydney2052Australia Data61 CSIROAustralia

We consider a scenario where an unmanned aerial vehicle(UAV),a typical unmanned aerial system(UAS),transmits confidential data to a moving ground target in the presence of multiple eavesdroppers.Multiple friendly reconfigurable intelligent surfaces(RISs) help to secure the UAV-target communication and improve the energy efficiency of the UAV.We formulate an optimization problem to minimize the energy consumption of the UAV,subject to the mobility constraint of the UAV and that the achievable secrecy rate at the target is over a given threshold.We present an online planning method following the framework of model predictive control(MPC) to jointly optimize the motion of the UAV and the configurations of the RISs.The effectiveness of the proposed method is validated via computer simulations.

关键词： Unmanned aerial systems(UASs) Unmanned aerial vehicle(UAV) communication security Eaves-dropping Reconfigurable intelligent surfaces(RIS) Autonomous navigation and placement Path planning Model predictive control

A communication security Protocol of Mobile Agent System

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Wuhan University Journal of Natural Sciences 2010年第2期15卷 117-120页

作者： GUAN Huanmei ZHANG Huanguo MENG Xuejun ZHANG Jingwei Computer Center Wuhan University Wuhan 430072Hubei China School of Computer Wuhan University Wuhan 430072Hubei China State Key Laboratory of Software Engineering WuhanUniversity Wuhan 430072 Hubei China Network Center Wuhan University Wuhan 430072 HubeiChina

The security issues of mobile agent system have embarrassed its widespread implementation. The paper analyses communication security threats and countermeasures of mobile agent system and proposes a communication security protocol of mobile agent system. It provides multifactor authentication, encryption transmission, and integrity protection of mobile agent.

关键词： mobile agent communication security multifactorauthentication encryption transmission

Speech Encryption in Linear Canonical Transform Domain Based on Chaotic Dynamic Modulation

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Journal of Beijing Institute of Technology 2021年第3期30卷 295-304页

作者： Liyun Xu Tong Zhang Chao Wen Institute of Big Data Science and Industry School of Computer and Information TechnologyShanxi UniversityTaiyuan 030006China

In order to transmit the speech information safely in the channel,a new speech encryp-tion algorithm in linear canonical transform(LCT)domain based on dynamic modulation of chaot-ic system is proposed.The algorithm first uses a chaotic system to obtain the number of sampling points of the grouped encrypted signal.Then three chaotic systems are used to modulate the corres-ponding parameters of the LCT,and each group of transform parameters corresponds to a group of encrypted signals.Thus,each group of signals is transformed by LCT with different parameters.Fi-nally,chaotic encryption is performed on the LCT domain spectrum of each group of signals,to realize the overall encryption of the speech signal.The experimental results show that the proposed algorithm is extremely sensitive to the keys and has a larger key space.Compared with the original signal,the waveform and LCT domain spectrum of obtained encrypted signal are distributed more uniformly and have less correlation,which can realize the safe transmission of speech signals.

关键词： communication security linear canonical transform transform domain encryption chaotic system

Enhance Confidentiality of Threshold Signature for MANET

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Wuhan University Journal of Natural Sciences 2006年第6期11卷 1533-1536页

作者： GUO Wei XIONG Zhongwei Network Center Jianghan University Wuhan 430056 Hubei China State Key Laboratory of Software Engineering Wuhan University Wuhan 430072 Hubei China

The participating wireless mobile node that mobile ad hoc network （MANET） communications need to forward may be malicious. That means not only adversary might be able to acquire some sensitive information of the threshold signatures from the compromised node, but also the partial signatures may be fabricated by malicious node, the advantages of threshold signatures would disappear. Signing and encrypting the sensitive information of the threshold signatures, and only the specified receiver can recover it, which will improve the confidentiality of threshold signatures. The security analysis shows the method is suitable for the secure characteristic of MANET that has the malicious nodes, and the message transmission is secure can against the attack.

关键词： cryptography threshold signature mobile adhoc network communication security

Complex Threshold Key Management for Ad Hoc Network

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Complex Threshold Key Management for Ad Hoc Network

An Extended Halanay Inequality and Its Applications in Secure communication

The 1st Chinese Conference on Trusted Computing and Information security

作者： GUO Wei, XIONG Zhong-wei, LI Zhi-tang College of Computer Science and Technology , Huazhong University of Science Technology, Wuhan 430074, Hubei, China State Key Laboratory of Software Engineering, Wuhan University, Wuhan 430072, Hubei, China

＜正＞ A complex threshold key management framework has been proposed, which can address the challenges posed by the unique nature of Ad hoc network. Depending on the cooperation of the controller and participation nodes, this scheme should be efficient in the operation environmental alteration and tolerant faults of node, which take the advantages of the benefits of both key management approaches and alleviate their limitations. For the cooperation of the controller and participation nodes, a （t, n） threshold Elliptic curve sign-encryption scheme with the specified receiver also has been proposed. Using this threshold sign-encryption scheme, the key management distributes the trust between a controller and a set of participation nodes.

关键词： key management Ad hoc network threshold cryptography communication security

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An Extended Halanay Inequality and Its Applications in Secur...