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Ternary Tree based Group key Management in Dynamic Peer networks

International Conference on Computational Intelligence and Security

作者： Wei Wang Jianfeng Ma Sangjae Moon Key Laboratory of Computer Networks and Information Security Ministry ofEducation Xidian University Xi'an China Mobile Network Security Technology Research Center Kyungpook National University Daegu South Korea

ISBN: (纸本)1424406048

For group-oriented applications, designing secure and efficient group key management schemes is a major problem. We present a group key management scheme for dynamic peer networks, which supports join, leave, merge and partition events. In the scheme, the numbers of rounds and messages are close to the lower bounds of those for dynamic group key management, and the length of messages and computation costs are less than those of the existing schemes. Furthermore, this scheme provides forward secrecy, backward secrecy and key independence

关键词： computer network management Protocols information security Computational efficiency Technology management Laboratories computer science education Cryptography Moon Mobile computing

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FDEWS 2.0: A Web-GIS-Based Early Warning System for Fish Disease via Water Quality Management

FDEWS 2.0: A Web-GIS-Based Early Warning System for Fish Dis...

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World Congress on Intelligent Control and Automation (WCICA)

作者： Nan Li Zetian Fu Boqi Wang Xiaoshuan Zhang College of Engineering China Agricultural University Beijing China College of Resources and Environment China Agricultural University Beijing China Key Laboratory for Modern Precision Agriculture System Integration China Agricultural University Beijing China Key Laboratory for computer information management technology Suzhou University Jiangsu China

The water quality is the most vital factor in a successfully healthy aquaculture. After investigation by 415 fish disease cases and experiments, it is found that eutrophication and the pollutants of NH3, H2S as well as heavy metals and organic compounds are the main reasons of inducing fish disease in the north of China. Generally speaking, an early warning system for fish disease based on water management is a cheaper and alternative choice available for the fish farmers to warn the risks and to minimize disease problems. A Web-GIS-based fish disease early-warning system (FDEWS 2.0) based on water quality management has been developed by us. Building a water quality monitoring network in the aquafarm and integrating a series of simulation models with the GIS and the World-Wide-Web (WWW) are the key advantages of this system

关键词： Alarm systems Marine animals Diseases Quality management Water pollution Aquaculture Organic compounds Risk management Monitoring Geographic information Systems

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Packet-level adaptive sampling on multi-fluctuation scale traffic

Packet-level adaptive sampling on multi-fluctuation scale tr...

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2005 International Conference on Communications, Circuits and Systems

作者： Xu, Li-Bo Wu, Guo-Xin Li, Jian-Fei Key Laboratory of Computer Network and Information Integration Southeast University Nanjing 210096 China

ISBN: (纸本)0780390156

In high-speed Internet links, effective and efficient packet sampling technology in traffic measurement becomes more and more indispensable for its benefits of reducing data quantity and saving various resources. We address the Issue of how to keep or improve sampling accuracy during burst or fluctuation periods. In the paper, an adaptive packet-level sampling method on different traffic fluctuation and burst scales is proposed. The method can dynamically adjust each packet sampling probability dependent on the magnitude of traffic fluctuation. The adjustment granularity is fine because it reaches single packet. By contrast to static random sampling method in experiments using real traffic trace, we show that the proposed adaptive sampling has great capability to trace traffic fluctuations and Improve sampling accuracy through capturing more fluctuation or burst details. © 2005 IEEE.

关键词： Telecommunication traffic

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TCS-Chord: An improved routing algorithm to Chord based on the topology-aware clustering in self-organizing mode

TCS-Chord: An improved routing algorithm to Chord based on t...

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1st International Conference on Semantics, Knowledge and Grid, SKG 2005

作者： Ye, Liu Peng, Yang Zi, Chu Jiagao, Wu Key Laboratory of Computer Network and Information Integration Ministry of Education Southeast University Nanjing 210096 China

ISBN: (纸本)0769525342

The study on semantic routing efficiency of DHTP2P networks is a key element to promote the development of P2P networks, it is critical for a P2P routing algorithm to be aware of the network physical topology, which leads to improvement of the routing efficiency. By analyzing the Hashing function's properties, some novel logical connections are presented among the destination node, the Chord semantic routing relay node sequence, and the ID of clustering neighbor nodes. This paper describes TCS-Chord (an improved routing algorithm to Chord based on the Topology-aware Clustering in Self-organizing mode) to improve the efficiency of Chord routing. Since the clustering nodes only have local views in the self-organizing mode, some rules are applied for a node to learn other nodes ' physical topology-aware locations. The TCS-Chord's routing algorithm is described completely, and our experiments also indicate that TCS-Chord can improve the Chord semantic routing efficiently. © 2006 IEEE.

关键词： Routing algorithms

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An enhanced application-level multicast protocol: A Qos perspective

An enhanced application-level multicast protocol: A Qos pers...

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8th International Symposium on Parallel Architectures, Algorithms and networks, I-SPAN 2005

作者： Chu, Zi Yang, Yin-Yin Department of Computer Science and Engineering Southeast University Nanjing 210096 China Key Laboratory of Computer Network and Information Integration Ministry of Education Southeast University Nanjing 210096 China

ISBN: (纸本)0769525091

Ubicast, an enhanced application-level multicast protocol, is presented in this paper. It is built upon Pastry, a robust and self-organizing peer-to-peer substrate overlay, and leverages its merits of reliable application-level routing and object location. Ubicast is mainly applied to real-time multimedia applications with QoS heterogeneity. It tries to minimize the delay radius of the multicast tree, while meeting different bandwidth requirements. It extends traditional degree-bound model and satisfies nodes' heterogeneous QoS requirements to provide customizable multicast services. Besides, Priority Joining Algorithm based on the concept of potential parents is proposed to limit the number of nodes that a participant needs to probe. The join cost is decreased substantially to guarantee the scalability for a potentially large network topology. Simulation and experimental analysis over large-scale topology confirm the performance improvement of Ubicast which is especially suited for small sized multicast groups. © 2005 IEEE.

关键词： network protocols

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Ubicast: An enhanced application-level multicast protocol

Ubicast: An enhanced application-level multicast protocol

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6th International Conference on Parallel and Distributed Computing, Applications and Technologies, PDCAT 2005

作者： Chu, Zi Yang, Yin-Yin Tu, Hao Kong, Wei-Ning Department of Computer Science and Engineering Southeast University Nanjing 210096 China Key Laboratory of Computer Network and Information Integration Ministry of Education Southeast University Nanjing 210096 China

ISBN: (纸本)0769524052

This paper presents Ubicast, an enhanced application-level multicast protocol. Ubicast is built upon Pastry, a scalable and self-organizing peer-to-peer substrate overlay, and leverages its merits of reliable application-level routing and object location. Ubicast is mainly applied to such real-time multimedia applications with QoS heterogeneousness as multimedia streaming service, video-on-demand. The paper makes two contributions to the study of application-level multicast: (1) Ubicast extends traditional degree-bound model and satisfies nodes' heterogeneous QoS requirements to provide customizable multicast services. It tries to minimize the delay radius of the multicast tree, while meeting different bandwidth requirements. (2) Priority Joining Algorithm is proposed to limit the number of nodes that a participant needs to probe. The join cost is decreased substantially to guarantee the scalability for a potentially large network topology. Simulation and experimental analysis confirm the performance improvement of Ubicast which is especially suited for small sized multicast groups. © 2005 IEEE.

关键词： network protocols

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Packet-level adaptive sampling on multi-fluctuation scale traffic

Packet-level adaptive sampling on multi-fluctuation scale tr...

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International Conference on Communications, Circuits and Systems (ICCCAS)

作者： Li-Bo Xu Guo-Xin Wu Jian-Fei Li Key Laboratory of Computer Network and Information Integration South-East University Nanjing China

ISBN: (纸本)0780390156

In high-speed Internet links, an effective and efficient packet sampling technology in traffic measurement becomes more and more indispensable for its benefits of reducing data quantity and saving various resources. We address the issue of how to keep or improve sampling accuracy during burst or fluctuation periods. In the paper, an adaptive packet-level sampling method on different traffic fluctuation and burst scales is proposed. The method can dynamically adjust each packet sampling probability dependent on the magnitude of traffic fluctuation. The adjustment granularity is fine because it reaches a single packet. By contrast to the static random sampling method in experiments using real traffic traces, we show that the proposed adaptive sampling has a great capability to trace traffic fluctuations and improve sampling accuracy through capturing more fluctuation or burst details.

关键词： Sampling methods Telecommunication traffic Fluctuations Communication system traffic control Probes High-speed networks Laboratories computer networks Electronic mail IP networks

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TCS-Chord: An Improved Routing Algorithm to Chord Based on the Topology-aware Clustering in Self-organizing Mode

TCS-Chord: An Improved Routing Algorithm to Chord Based on t...

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International Conference on Semantics, Knowledge and Grid (SKG)

作者： Liu Ye Yang Peng Chu Zi Wu Jiagao Key Laboratory of Computer Network and Information Integration Ministry of Education Southeast University Nanjing China

The study on semantic routing efficiency of DHTP2P networks is a key element to promote the development of P2P networks, it is critical for a P2P routing algorithm to be aware of the network physical topology, which leads to improvement of the routing efficiency. By analyzing the Hashing function's properties, some novel logical connections are presented among the destination node, the Chord semantic routing relay node sequence, and the ID of clustering neighbor nodes. This paper describes TCS-Chord (an improved routing algorithm to Chord based on the Topology-aware Clustering in Self-organizing mode) to improve the efficiency of Chord routing. Since the clustering nodes only have local views in the self-organizing mode, some rules are applied for a node to learn other nodes' physical topology-aware locations. The TCS-Chord's routing algorithm is described completely, and our experiments also indicate that TCS-Chord can improve the Chord semantic routing efficiently.

关键词： Routing Clustering algorithms network topology Performance analysis Relays Power capacitors Thyristors Delay Load management Laboratories

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A new type of digital multisignature

A new type of digital multisignature

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9th International Conference on computer Supported Cooperative Work in Design 2005

作者： Wang, Ying-Long Wang, Lian-Hai School of Information Science and Engineering Shandong University Jinan China Key Laboratory for Computer Network of Shandong Province Jinan China

ISBN: (纸本)1846000025

information security is very important in CSCW and digital signature is one of the valid methods to resolve these problems. Based on researches on multisignature and proxy signature, we present a new type of signature: Multisignature with proxy, in which some signers can delegate their proxies to do the signatures. The common multisignature and the proxy multisignature are specific to this signature. Two new schemes of multisignatures mingled with proxy signers are introduced in this paper, and their security issues are analyzed as well.

关键词： Digital signal processing

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Distributed network fault management model based on mobile agent

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Jisuanji Gongcheng/computer Engineering 2005年第14期31卷 127-129+149页

作者： Zhong, Xiao Wu, Guoxin Key Laboratory of Computer Networks and Information Integration Department of Computer Science and Engineering Southeast University Nanjing 210096 China

After analyzing the limitations of traditional network management system, a network management system model based on distributed componentware is proposed, the description of the function of the fault management part is also given. The paper introduces the mobile agent technology and puts forward the design of the application framework based on the above model using mobile agent technology. In the end, it evaluates the performance of the network fault management system. The results of this evaluation prove the system will possess nice performance attributes.

关键词： Fault management Mobile agent network management SNMP

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