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10th IEEE International Conference on Computer and Information technology, CIT-2010, 7th IEEE International Conference on Embedded software and Systems, ICESS-2010, 10th IEEE Int. Conf. Scalable Computing and Communications, ScalCom-2010

作者： Zhao, Jinjing Zhao, Gang Wen, Yan Li, Xiang National Key Laboratory of Science and Technology on Information System Security Beijing Institute of System Engineering Beijing China

ISBN: (纸本)9780769541082

In this paper, we proposed a novel approach, called LDS-IVD, to model the entity interaction vulnerabilities in Large Distributed System (LDS) which results from the absence of necessary security mechanisms. LDS-IVD constructs a general interaction security mechanism description language, named with IS-LAN. By analyzing the key resources in LDS with the finite state machine, IS-LAN provides the capability of discovering and validating the entity interaction vulnerabilities. In this way, IDS-IVD can find out the negative influence on the resource confidentiality, integrity and availability incurred by the deficiency of security mechanisms, and can detect the interaction vulnerabilities along with the attack patterns. © 2010 IEEE.

关键词： Network security

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A user model based on mobile environment

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Ruan Jian Xue Bao/Journal of software 2011年第SUPPL. 2期22卷 120-128页

作者： Du, Yi Tian, Feng Dai, Guo-Zhong Wang, Feng Wang, Hong-An Intelligence Engineering Laboratory Institute of Software Chinese Academy of Sciences Beijing 100190 China School of Information Science and Engineering Graduate University Chinese Academy of Sciences Beijing 100190 China Yunnan Provincial Key Laboratory of Computer Application Kunming University of Science and Technology Kunming 650500 China

It's very important to help developers design user interface for application in an intelligent user interface. Nowadays, the number of mobile based applications increases greatly, but there are no proper user model to guide the design and development of user interface. This article takes different types of functions and parameters in consideration, and proposes a user model and user modeling method based on activity theory. In addition, this article describes the improved VSM algorithm in detail. Finally, an application and an informal experiment are designed to prove the efficiency of given user model. This work can be used to guide the design and development of mobile user interface under mobile environment. ©2011 Journal of software.

关键词： User interfaces

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Aggregation capacity of wireless sensor networks: Extended network case

Aggregation capacity of wireless sensor networks: Extended n...

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IEEE Annual Joint Conference: INFOCOM, IEEE Computer and Communications Societies

作者： Cheng Wang Changjun Jiang Yunhao Liu Xiang-Yang Li Shaojie Tang Huadong Ma Key Laboratory of Embedded System and Service Computing Ministry of Education Shanghai China Department of Computer Science University of Tongji Shanghai China Department of Computer Science and Engineering Hong Kong University of Science and Technology Hong Kong China TNLIST School of Software Tsinghua University China Department of Computer Science Illinois Institute of Technology Chicago IL USA Department of Computer Science Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781424499199

A critical function of wireless sensor networks (WSNs) is data gathering. While, one is often only interested in collecting a relevant function of the sensor measurements at a sink node, rather than downloading all the data from all the sensors. This paper studies the capacity of computing and transporting the specific functions of sensor measurements to the sink node, called aggregation capacity, for WSNs. It focuses on random WSNs that can be classified into two types: random extended WSN and random dense WSN. All existing results about aggregation capacity are studied for dense WSNs, including random cases and arbitrary cases, under the protocol model (ProM) or physical model (PhyM). In this paper, we propose the first aggregation capacity scaling laws for random extended WSNs. We point out that unlike random dense WSNs, for random extended WSNs, the assumption made in ProM and PhyM that each successful transmission can sustain a constant rate is over-optimistic and unpractical due to transmit power *** derive the first result on aggregation capacity for random extended WSNs under the generalized physical model. Particularly, we prove that, for the type-sensitive perfectly compressible functions and type-threshold perfectly compressible functions, the aggregation capacities for random extended WSNs with n nodes are of order Θ ((log n) -β/2-1 ) and Θ (((log n) -β/2 )/(log log n)), respectively, where β >; 2 denotes the power attenuation exponent in the generalized physical model.

关键词： Wireless sensor networks Signal to noise ratio Interference Throughput Lattices Routing PROM

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Quantum secure direct communication with cluster states

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Science China(Physics,Mechanics & Astronomy) 2010年第7期53卷 1271-1275页

作者： CAO WeiFeng YANG YuGuang WEN QiaoYan College of Electric and Information Engineering Zhengzhou University of Light IndustryZhengzhou 450002China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China College of Computer Science and Technology Beijing University of TechnologyBeijing 100124China State Key Laboratory of Integrated Services Network Xidian UniversityXi’an 710071China State key Laboratory of Information Security Gradute University of Chinese Academy of Sciences Beijing 100049China

A quantum secure direct communication protocol with cluster states is *** with the deterministic secure quantum communication protocol with the cluster state proposed by Yuan and Song(***.,2009,7:689),this protocol ca... 详细信息

关键词： quantum secure direct communication deterministic secure quantum communication cluster state

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Network traffic classification based on semi-supervised clustering

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Journal of China Universities of Posts and Telecommunications 2010年第SUPPL. 2期17卷 84-88页

作者： Lin, Guan-Zhou Xin, Yang Niu, Xin-Xin Jiang, Hui-Bai Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China Key Laboratory of Network and Information Attack and Defence Technology Beijing University of Posts and Telecommunications Beijing 100876 China National Engineering Laboratory for Disaster Backup and Recovery Beijing 100876 China Beijing Safe-Code Technology Co. Ltd Beijing 100876 China

The diminished accuracy of port-based and payload-based classification motivates use of transport layer statistics for network traffic classification. A semi-supervised clustering approach based on improved K-Means clustering algorithm is proposed in this paper to partition a training network flows set that contains a huge number of unlabeled flows and scarce labeled flows. The variance of flow attributes is used to initialize clusters centers instead of the random selection of the cluster centers in initialization. Scarce labeled flows are selected to construct a mapping from the clusters to the predefined traffic classes set. The experimental results show that both the overall accuracy and square error (SSE) value of our algorithm present better than those based on normal K-Means algorithm defined in Ref. [5]. © 2010 The Journal of China Universities of Posts and Telecommunications.

关键词： Clustering algorithms

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Variable-rate convolutional network coding

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The Journal of China Universities of Posts and Telecommunications 2010年第3期17卷 91-96,117页

作者： MA Song-ya CHEN Xiu-bo LUO Ming-xing Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications Beijing 100876 China Key Laboratory of Network and Information Attack and Defense Technology Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China National Engineering Laboratory for Disaster Backup and Recovery Beijing University of Posts and Telecommunications Beijing 100876 China School of Mathematics and Information Sciences Henan University Kaifeng 475004 China

Four types of variable-rate convolutional network codes are investigated over a single-source finite cyclic network. It is found that variable-rate generic, dispersion and broadcast can be implemented on the same network without changing the local encoding kernels of the non-source nodes. The efficient implementation has the advantage that each non-source node only needs to store one copy of the local encoding kernel within a session. However, it is also shown by an example that variable-rate multicast may not always be implemented under the above condition.

关键词： variable-rate convolutional generic convolutional dispersion convolutional broadcast convolutional multicast

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Authentication protocols to support fast handoff for 802.11s mesh networks

Authentication protocols to support fast handoff for 802.11s...

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International Conference on Multimedia Information Networking and security (MINES)

作者： Yang, Wei-Dong Liu, Ji-Zhao Wang, Ke Sun, Li-Ming College of Information Science and Engineering Henan University of Technology Zhengzhou China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences Beijing China

ISBN: (纸本)9780769542584

In this paper, we propose authentication protocols for 802.11s mesh networks, which support the mesh point's fast handoff between Mesh key distributors (MKDs). The protocols consist of the initial authentication protocol (IAP) and the fast handoff authentication protocol (FHAP). Once a MP firstly accesses the 802.11s mesh networks, the initial authentication protocol will be executed, which realizes the mutual authentication and keys confirmation among the MP, MKD and authentication server (AS). When the MP moves from the current MKD to another, the fast handoff authentication protocol that can be performed locally without the contact with AS, is proposed. The simulation results indicate that the authentication latency of our protocols is less than that of the scheme in [2]. © 2010 IEEE.

关键词： Authentication

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An trace based vehicular mobility model for simulation of vehicular delay tolerant networks

An trace based vehicular mobility model for simulation of ve...

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Symposia and Workshops on Ubiquitous, Autonomic and Trusted Computing, UIC-ATC

作者： Yang, Wei-Dong Liu, Ji-Zhao Zhou, Xin-Yun College of Information Science and Engineering Henan University of Technology Zhengzhou China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences Beijing China

ISBN: (纸本)9780769542720

The vehicular mobility models will seriously affect the simulation results of the key technologies for Vehicular Delay Tolerant Networks. Most of the existing vehicular mobility models are synthetic mobility models which cannot properly reflect the real environment. Th This is paper proposed vehicular mobility model based on real traces, which has considered the road topology, the vehicle speed control rules rules, the vehicle initial location, the turning probability at intersection and so on. On this bas basis is is, it further analyzed the closeness of simulation of the actual vehicle behavior from the model, the statistics characteristic of vehic vehicular ar trace and the network connection characteristic. The simulation results show that the proposed model can factually approximate the actual behavior of vehicle in real environment. © 2010 IEEE.

关键词： Vehicles

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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 1. Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China2. Key Laboratory of Network and Information Attack and Defence Technology of MOE Beijing University of Posts and Telecommunications Beijing 100876 China3. National Engineering Laboratory for Disaster Backup and Recovery Beijing University of Posts and Telecommunications Beijing 100876 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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A unified result for variable-rate linear network coding

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Journal of Harbin Institute of technology(New Series) 2010年第5期17卷 657-660页

作者：马松雅卓新建郭钦罗明星杨义先 Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications Key Laboratory of Network and Information Attack and Defence Technology of MOE Beijing University of Posts and Telecommunications National Engineering Laboratory for Disaster Backup and Recovery School of Mathematics and Information Sciences Henan University School of Science Beijing University of Posts and Telecommunications

Fong et *** variable-rate linear network coding for linear ***,the authors didn't investigate it for the other three types of linear network *** this paper,by simple and clear proofs,it is found that there are similar results for variable-rate linear generic and linear dispersion if the field size is large *** means that linear generics and linear dispersions of different dimensions can be implemented on the same network,while each non-source node is required to store only one copy of the local encoding kernel within a ***,an example is given to show that there isn't a similar result for linear multicast.

关键词： Variable-rate linear generic linear dispersion linear broadcast linear multicast

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