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A blind quantum signature protocol using the GHZ states

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Science China(Physics,Mechanics & Astronomy) 2013年第9期56卷 1636-1641页

作者： WANG MingMing CHEN XiuBo YANG YiXian Information Security center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications State Key Laboratory of Information Security(Institute of Information Engineering Chinese Academy of Sciences)

Recently,some blind quantum signature(BQS) protocols have been *** the previous schemes have security and efficiency *** on the entangled Greenberger-Horne-Zeilinger(GHZ) states,a new weak BQS protocol is *** with some existing schemes,our protocol has 100% ***,the protocol is simple and easy to *** security of the protocol is guaranteed by the correlation of the GHZ particles held by each *** our protocol,the signatory is kept blind from the content of the *** to the security analysis,the signatory cannot disavowal his/her signature while the signature cannot be forged by others.

关键词： blind quantum signature GHZ state efficiency security

Fair rate control for wireless ad-hoc networks with time varying channel capacities

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控制理论与应用（英文版） 2010年第1期8卷 69-74页

作者： Meiqin TANG Kai MA Xinping GUAN Institute of Mathematics and Information Ludong University Yantai Shandong 264025 China center for networking Control and Bioinformatics Department of Electrical Engineering Yanshan University Qinhuangdao Hebei 066004 China

We consider the problem of fair rate control for wireless ad-hoc networks with time varying channel capacities. The interaction between links in wireless ad-hoc networks introduces additional constraints on the flow rate. A primal-dual algorithm that guarantees fair rate control is proved to be trajectory stable. Various fairness indexes are obtained by choosing the specified form of the utility functions, and the numerical results validate the effectiveness of the proposed algorithm.

关键词： Wireless ad-hoc networks Rate control Trajectory stability Fairness

Reconfiguring the Logical Topology With Performance Guarantees in WDM Networks

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光学学报 2003年第S1期23卷 757-758页

作者： Fengqing Liu, Qingji Zeng, Xu Zhu, Xudong YangR&D center for Broadband Optical networking Techonology.Shanghai Jiaotong University Shanghai 200030, P.R. China, Tel: +86-21-62932166, Fax: +86-21-62932166, E-mail:liufengqing_1975@*** R&D center for Broadband Optical networking Techonology Shanghai Jiaotong UniversityShanghai 200030 P.R. China

To improve the network performance after traffic demand changes, reconfiguring the logical topology is necessary. We present an ILP algorithm to find out the least lightpath changes needed with guaranteed network perf... 详细信息

关键词： WDM networks logical topology reconfiguration ILP algorithm

Cryptanalysis and improvement of a certificateless encryption scheme in the standard model

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Frontiers of Computer Science 2014年第1期8卷 163-173页

作者： Lin CHENG Qiaoyan WEN Zhengping JIN Hua ZHANG State Key Laboratory of networking and Switch Technology Beijing University of Posts and Telecommunications Beijing 100876 China

Certificateless public key cryptography elimi- nates inherent key escrow problem in identity-based cryptog- raphy, and does not yet requires certificates as in the tradi- tional public key infrastructure. In this paper, we give crypt- analysis to Hwang et al.＇s certificateless encryption scheme which is the first concrete certificateless encryption scheme that can be proved to be secure against ＂malicious-but- passive＂ key generation center （KGC） attack in the stan- dard model. Their scheme is proved to be insecure even in a weaker security model called ＂honest-but-curious＂ KGC at- tack model. We then propose an improved scheme which is really secure against ＂malicious-but-passive＂ KGC attack in the standard model.

关键词： certificateless public key cryptography stan-dard model provable security

Value of Optical Bypass in Packet Ring Networks

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光学学报 2003年第S1期23卷 755-756页

作者： Xu Zhu, Qingji Zeng, Fengqing Liu, Xudong Yang, Shilin Xiao R&D center for Broadband Optical networking, Shanghai Jiaotong University, Shanghai 200030, P.R.China R&D center for Broadband Optical networking Shanghai Jiaotong University Shanghai 200030 P.R.China

This paper firstly examines the value of optical bypass scheme in packet ring networks. An Integer Linear Program (ILP) formulation is presented and analytical results under different traffic patterns are given.

关键词： in et as of Value of Optical Bypass in Packet Ring Networks ILP node SONET this link

Steganalysis and improvement of a quantum steganography protocol via a GHZ_4 state

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Chinese Physics B 2013年第6期22卷 199-202页

作者：徐淑奖陈秀波钮心忻杨义先 Information Security center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications Shandong Provincial Key Laboratory of Computer Network Shandong Computer Science Center State Key Laboratory of Information Security (Institute of Information EngineeringChinese Academy of Sciences)

Quantum steganography that utilizes the quantum mechanical effect to achieve the purpose of information hiding is a popular topic of quantum information. Recently, E1 Allati et al. proposed a new quantum steganography using the GHZ4 state. Since all of the 8 groups of unitary transformations used in the secret message encoding rule change the GHZ4 state into 6 instead of 8 different quantum states when the global phase is not considered, we point out that a 2-bit instead of a 3-bit secret message can be encoded by one group of the given unitary transformations. To encode a 3-bit secret message by performing a group of unitary transformations on the GHZ4 state, we give another 8 groups of unitary transformations that can change the GHZ4 state into 8 different quantum states. Due to the symmetry of the GHZ4 state, all the possible 16 groups of unitary transformations change the GHZ4 state into 8 different quantum states, so the improved protocol achieves a high efficiency.

关键词： quantum steganography GHZ4 entangled state quantum cryptography quantum communication

A Survey of Security Issues in Cognitive Radio Networks

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China Communications 2015年第3期12卷 132-150页

作者： LI Jianwu FENG Zebing FENG Zhiyong ZHANG Ping Network Information Processing center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications

In the last decade,cognitive radio(CR) has emerged as a major next generation wireless networking technology,which is the most promising candidate solution to solve the spectrum scarcity and improve the spectrum ***,there exist enormous challenges for the open and random access environment of CRNs,where the unlicensed secondary users(SUs) can use the channels that are not currently used by the licensed primary users(PUs) via spectrum-sensing *** of this access method,some malicious users may access the cognitive network arbitrarily and launch some special attacks,such as primary user emulation attack,falsifying data or denial of service attack,which will cause serious damage to the cognitive radio *** addition to the specifi c security threats of cognitive network,CRNs also face up to the conventional security threats,such as eavesdropping,tampering,imitation,forgery,and noncooperation etc..Hence,Cognitive radio networks have much more risks than traditional wireless networks with its special network *** this paper,we considered the security threats from passive and active ***,the PHY layer security is presented in the view of passive attacks,and it is a compelling idea of using the physical properties of the radio channel to help provide secure wireless ***,malicious user detection is introduced in the view of active attacks by means of the signal detection techniques to decrease the interference and the probabilities of false alarm and missed ***,we discuss the general countermeasures of security threats in three *** particular,we discuss the far reaching effect of defensive strategy against attacks in CRNs.

关键词： CRNs security physical layer security security capacity active attacks passive attacks

Multiparty semiquantum key agreement without entanglement

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Communications in Theoretical Physics 2020年第6期72卷 70-75页

作者： Ming-Ming Wang Rui-Fan Han Lin-Ming Gong Shaanxi Key Laboratory of Clothing Intelligence State and Local Joint Engineering Research Center for Advanced Networking and Intelligent Information ServicesSchool of Computer ScienceXi'an Polytechnic UniversityXi'an 710048China

The key agreement protocols allow two or more users to negotiate a shared key for establishing a secure communication channel without a third trusted party in such a way that the shared key is determined by all authorized players rather than any subset of *** propose the first real multiparty semiquantum key agreement(SQKA)protocols based on *** protocols include only one quantum player,while the others are classical players who only need to measure and prepare states in the classical *** first present a symmetric three-party SQKA protocol,where two classical players can fairly negotiate a key with a quantum player by using single-photons as message *** we present an asymmetric SQKA protocol where a relatively low percentage of quantum states are used for eavesdropping *** we further extend them to an asymmetric multiparty SQKA *** SQKA protocols require fewer quantum resources than the previous SQKA protocols for classical players,especially without requirement of entanglement,which makes them easier to implement using current *** protocols are secure against external eavesdroppers and are fair against a minority of internal dishonest players.

关键词： multiparty semiquantum key agreement single-photon fairness efficiency symmetric and asymmetric protocol

SERVICES AND COMMUNICATIONS IN FOG COMPUTING

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China Communications 2017年第11期14卷 I0001-I0002页

作者： shangguang wang ao zhou michael m.komarov stephen s.yau the state key laboratory of networking and switching technology beijing university of posts and telecommunications(bupt) the state key laboratory of networking and switching technology beijing university of posts and telecommunications department of innovation and business in information technologies national research university arizona state university(asu) the asu information assurance center

In the current cloud-based Internet-of-Things （IoT） model, smart devices （such as sensors, smartphones） exchange information through the Internet to cooperate and provide services to users, which could be citizens... 详细信息

关键词： SERVICES COMMUNICATIONS FOG COMPUTING