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Encrypted Finite-Horizon Energy-to-Peak State Estimation for Time-Varying Systems Under eavesdropping Attacks: Tackling Secrecy Capacity

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IEEE/CAA Journal of Automatica Sinica 2023年第4期10卷 985-996页

作者： Lei Zou Zidong Wang Bo Shen Hongli Dong Guoping Lu College of Information Science and Technology Donghua UniversityShanghai 201620 Engineering Research Center of Digitalized Textile and Fashion Technology Ministry of EducationShanghai 201620China College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590China Department of Computer Science Brunel University LondonUxbridgeMiddlesex UB83PHUK Intelligence Energy Research Institute Northeast Petroleum UniversityDaqing 163318 Heilongjiang Provincial Key Laboratory of Networking and Intelligent Control Northeast Petroleum UniversityDaqing 163318 Sanya Offshore Oil&Gas Research Institute Northeast Petroleum UniversitySanya 572024China School of Electrical Engineering Nantong UniversityNantong 226019China

This paper is concerned with the problem of finitehorizon energy-to-peak state estimation for a class of networked linear time-varying systems.Due to the inherent vulnerability of network-based communication,the measurement signals transmitted over a communication network might be intercepted by potential eavesdroppers.To avoid information leakage,by resorting to an artificial-noise-assisted method,we develop a novel encryption-decryption scheme to ensure that the transmitted signal is composed of the raw measurement and an artificial-noise term.A special evaluation index named secrecy capacity is employed to assess the information security of signal transmissions under the developed encryption-decryption scheme.The purpose of the addressed problem is to design an encryptiondecryption scheme and a state estimator such that:1)the desired secrecy capacity is ensured;and 2)the required finite-horizon–l_(2)-l_(∞)performance is achieved.Sufficient conditions are established on the existence of the encryption-decryption mechanism and the finite-horizon state estimator.Finally,simulation results are proposed to show the effectiveness of our proposed encryption-decryption-based state estimation scheme.

关键词： Artificial-noise-assisted technique eavesdropping encryption-decryption scheme energy-to-peak state estimation finitehorizon state estimation

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eavesdropping the display image from conducted emission on network cable of a PC

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The Journal of China Universities of Posts and Telecommunications 2013年第3期20卷 78-84页

作者： DU Yu-lei LU Ying-hua ZHANG Jin-ling School of Telecommunication Engineering Beijing University of Posts and Telecommunications

The display image of a PC can be reconstructed by using the conducted emission on the PC＇s network cable. The relevant signals which be used to reconstruct the original image are coupling from the radiation of the switching of red, green, blue （RGB） signals in PC. These pertinent signals are partly contained in the frequency region higher than 30 MHz in the conducted emission. From these findings, the near-field coupling principle from PC to the network cable is analyzed firstly. And then, a multi-conductor transmission model for the RGB signals which transmit in the network cable is proposed. In addition, the maximum safe distance is estimated by using this model. In order to check the validity of the estimating distance, the eavesdropping experiment is carried out to reconstruct the original display image. The results demonstrate that the blurred display image can be retrieved at the place of 29.5 m.

关键词： electromagnetic secure conducted emission unshielded twisted pair cables eavesdropping multi-conductor transmission model

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Parent-offspring and inter-offspring responses to conspecific versus heterospecific distress calls in 2 sympatric birds

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Current Zoology 2022年第6期68卷 700-707页

作者： Yuxin JIANG Jingru HAN Ziqi ZHANG Xiangyang CHEN Canchao YANG Ministry of Education Key Laboratory for Ecology of Tropical Islands College of Life SciencesHainan Normal UniversityHaikou 571158China

Distress calls,as a type of alarm call,play important roles in expressing bodily condition and conveying information concerning predation threats.In this study,we examined the communication via distress calls in parent–offspring and inter-offspring interactions.First,we used playback of chick distress calls of 2 sympatric breeders,the vinous-throated parrotbill Sinosuthora webbiana and the oriental reed warbler Acrocephalus orientalis,to the adults/chicks of these 2 species,respectively,and measured the responses of conspecifics or heterospecifics.The playback-to-chicks experiment showed that both species of chicks reduced the number of begging calls and begging duration time as a response to conspecific/heterospecific distress calls compared with natural begging and background noise controls.However,reed warbler chicks also reduced beak opening frequency in the response to conspecific distress calls compared with other playback stimuli.Second,the results of the playback-to-adults experiment showed that reed warbler adults could eavesdrop on distress calls of conspecific neighbors and sympatric heterospecifics.Furthermore,the nest-leaving behavior of reed warblers did not differ significantly when they heard the distress calls of conspecifics or parrotbills.Finally,reed warbler adults responded to heterospecific distress calls more quickly than to conspecific distress calls,and parrotbill adults presented the same response.Our results supported the warnkin hypothesis and show that chick distress calls play an important role in conveying risk and the condition of chicks to enhance individual fitness.In addition,we also found that eavesdropping on distress calls is a congenital behavior that begins in the chick stage.

关键词： acoustic communication call recognition chick-chick system eavesdropping parent-offspring system

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A two-stage amplifier of laser eavesdropping model based on waveguide fiber taper

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Defence Technology（防务技术） 2019年第1期15卷 95-97页

作者： Mei-ting Wang Yan Zhu Yi-ning Mu School of Science Changchun University of Science and Technology

In order to improve ability of amplification about optical arrival angle in laser eavesdropping system, and enhance receiving field of view (FOV) of laser eavesdropping system, this paper presents a new multistage amplifier laser eavesdropping model based on waveguide fiber taper. First of all, taking about four-quadrant (4QD) laser eavesdropping model as an example, from the theoretical view, analyses factors that, currently, laser eavesdropping system face many restrictive factors during practical applications. Besides, from the receiving FOV and ability of amplification about arrival angle of incoming optical axis angles, systematically analyses advantages of multi-stage amplifier model. What’s more,through constructing laser eavesdropping test platform, we demonstrate Signal to Noise Ratio(SNR) of two stage amplification model is eventually promoted to 6-10 dB compared with one amplifying model,especially in low and high audio level, the advantages is more obvious.

关键词： Laser eavesdropping Waveguide fiber taper 4QD

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Method for determining the best frequency band for eavesdropping the display image of a PC

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The Journal of China Universities of Posts and Telecommunications 2013年第4期20卷 93-98页

作者： DU Yu-lei Lü Ying-hua ZHANG Jin-ling ZHANG Nan School of Telecommunication Engineering Beijing University of Posts and Telecommunications

The display image of the video display unit （VDU） can be reconstructed by receiving and analyzing the unexpected electromagnetic noise emanated from a personal computer system. This fact is one of the information leakage threats in information security. Therefore, in order to choose the best frequency range for receiving the electromagnetic compromising emanations form a PC display effectively and quickly, a method based on the correlation power analysis （CPA） and the common equipments is proposed. Firstly, the frequency spectrum of 10 MHz to 1 GHz is measured about 10 times respectively when the PC is displaying the white-black vertical strips image and black image. The frequency range which contains the display information can be obtained through the CPA. And then, the special image signal is searched around the dot frequency and harmonics. If the special signal disappears when displaying the total black image, it can be judged to be the real special signal. Finally, the best receiving frequency range can be chosen by comprehensive considering the results of CPA and the signal to noise ratio （SNR） of the special image signal. In order to check the validity of the chosen frequency range, eavesdropping experiments are carried out. The results demonstrate that the selected frequency range can retrieve the higher quality image than other frequency bands.

关键词： electromagnetic secure compromising emanations CPA eavesdropping TEMPEST

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eavesdropping on the＇ping-pong＇ quantum communication protocol freely in a noise channel

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Chinese Physics B 2007年第2期16卷 277-281页

作者：邓富国李熙涵李春燕周萍周宏余 The Key Laboratory of Beam Technology and MateriaJ Modification of Ministry of Education Beijing Normal University Beijing 100875 China Institute of Low Energy Nuclear Physics and Department of Material Science and Engineering Beijing Normal University Beijing 100875 China Beifing Radiation Center Beijing 100875 China

We introduce an attack scheme for eavesdropping freely the ping-pong quantum communication protocol proposed by Bostrǒm and Felbinger [Phys. Rev. Left. 89, 187902 （2002）] in a noise channel. The vicious eavesdropper, Eve, intercepts and measures the travel photon transmitted between the sender and the receiver. Then she replaces the quantum signal with a multi-photon signal in the same state, and measures the returned photons with the measuring basis, with which Eve prepares the fake signal except for one photon. This attack increases neither the quantum channel losses nor the error rate in the sampling instances for eavesdropping check. It works for eavesdropping the secret message transmitted with the ping-pong protocol. Finally, we propose a way for improving the security of the ping-pong protocol.

关键词： quantum communication ping-pong protocol eavesdropping

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A Spectrum Sharing Model that Counters eavesdropping:An Energy Efficiency View

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Journal of Harbin Institute of Technology(New Series) 2021年第2期28卷 47-54页

作者： Yee-Loo Foo Faculty of Engineering Multimedia UniversityCyberjaya 63100Malaysia

Wireless transmission is subject to eavesdropping.When wireless transmission ceases,the assigned frequency channel is unused,wasting the spectral opportunity given.In this study,a spectrum sharing model that reduces spectral wastage and protects against eavesdropping is proposed.First,cognitive radio(CR)shares the channel access with primary user(PU).When the CR senses that the channel is idle,CR can seize the unoccupied channel for its own use.If the channel is detected to be occupied by PU,CR transmits artificial noise to jam any potential eavesdropper.To what extent is this operation beneficial to the CR?The main concern of this study is the energy efficiency(μ)of CR,i.e.,the ratio of channel throughput to its energy consumption.The relationship betweenμand the percentage of frame duration allocated for sensing(τ)was investigated.This study contributes a novel theoretical expression that allows us to find the optimalμandτvalues,denoted byμ∗andτ∗.With the availability of this expression,the relationships between(μ∗,τ∗)and other important system parameters can be understood thoroughly.Our investigation reveals that strong CR signal will result in highμ∗without the need of increasingτ∗.On the other hand,a strong primary signal allows a shortτ∗and it improvesμ∗.High sampling rate for sensing may be unnecessary,as it does not improveμ∗significantly.A more demanding target probability of detection requires a higher sensing duration,but it has insignificant impact onμ∗.

关键词： spectrum sharing cognitive radio physical layer security eavesdropping jamming throughput energy efficiency

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Secure communication in wireless powered communication networks with energy accumulation

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Science China(Information Sciences) 2021年第10期64卷 263-265页

作者： Ding XU Wireless Communication Key Lab of Jiangsu Province Nanjing University of Posts and Telecommunications

Dear editor,Wireless powered communication network(WPCN) is a wireless network where user devices are powered wirelessly by harvesting radio frequency(RF) signals transmitted by dedicated power stations or nearby power sources [1].WPCN is attractive for wireless networks with low-power user devices, such as wireless sensor networks [2] and backscatter networks [3]. Meanwhile,

关键词： Wireless powered communication network secure communication eavesdropping energy accumulation energy harvesting

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An Anti-eavesdropping Method in Data Collection of Smart Meter

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Journal of Computer and Communications 2019年第9期7卷 38-49页

作者： Weiwei Dong Yong Wang Lin Zhou Kanghua Cao Haiming Li College of Information and Technology Shanghai University of Electric Shanghai China

At present, DL/T 645-2007 communication protocol is used to collect data for smart meters. However, in the beginning, this protocol is not designed to be a secure protocol and only the function and reliability were taken into account. Plaintext is used in the protocol for data transmission, as a result, attackers can easily sniff the information and cause information leakage. In this paper, man-in-the-middle attack was used to verify that the smart meter data acquisition process was vulnerable when facing third-party attacks, and this can result in data eavesdropping. In order to resist such risks and prevent information being eavesdropped, a real ammeter communication experimental environment was built, it realized two-way identity authentication between data acquisition center and ammeter data center. At the same time, RSA (Rivest-Shamir-Adleman) was used to encrypt the meter data, which encrypted the collection, storage process of meter data and ensured the confidentiality and integrity of the meter data transmission. Compared with other methods, this method had obvious advantages. The analysis showed that this method can effectively prevent the data of smart meters from being eavesdropped.

关键词： Smart Meter Data Acquisition Transmission eavesdropping RSA Two-Way Authentication

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Secure network coding in the presence of eavesdroppers

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Science China(Information Sciences) 2010年第3期53卷 648-658页

作者： LUO MingXing1,2,3, YANG YiXian1,2,3, WANG LiCheng1,2,3 & NIU XinXin1,2,3 1Information Security Center, State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China 2Key Laboratory of Network and Information Attack and Defence Technology of MOE, Beijing University of Posts and Telecommunications, Beijing 100876, China 3National Engineering Laboratory for Disaster Backup and Recovery, Beijing University of Posts and Telecommunications, Beijing 100876, China Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China Key Laboratory of Network and Information Attack and Defence Technology of MOE Beijing University of Posts and Telecommunications Beijing China National Engineering Laboratory for Disaster Backup and Recovery Beijing University of Posts and Telecommunications Beijing China

Our concern, in the paper, is to construct information-theoretic secure network coding in the presence of eavesdroppers. Based on the generalized attack model and all-or-nothing transformation, the security of network coding in the generalized combination network can be characterized by the network capacity and the min-cut bound of wiretapping set from the source. Furthermore, it can be extended to any directed acyclic networks with single source. Compared with the traditional results, we construct information-theoretic secure network coding without additional encryptions and giving up any capacity.

关键词： all-or-nothing transformation secure network coding eavesdropping

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