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An Empirical Measurement of Security Association in 802.11 Mesh networks

An Empirical Measurement of Security Association in 802.11 M...

The 4th International Conference on Wireless Communications, Networking and Mobile Computing(第四届IEEE无线通信、网络技术及移动计算国际会议)

作者： Xiang Lu Qi Jiang Jianfeng Ma Xinghua Li Key Laboratory of Computer Networks and Information Security (Ministry of Education) Xidian University Xidian University Xi'an 710071 P.R.China

Security association established by authentication schemes enables wireless networks resilient from external attacks. However, an enhanced security guarantee will influence network performance more or less. In this paper, we observe the detailed actions of a security association in the procedure of establishment and shift, in a wireless mesh network (WMN), i.e. a typical multi-hop network. To investigate the behaviors of security association in different environment, several experiments are implemented in our testbed with discriminatory parameters sets, such as routing efficiency, topology diversity and subsequent traffic load. he quantified interactions between security association and network performance are exposed by the comparison of representative parameters. Meanwhile, a guideline is suggested for the design of access schemes which take both security and QoS into account.

关键词： Security Association WMN EAP-TLS Testbed

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Universally composable Secure RFID communication protocol in supply chains

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Jisuanji Xuebao/Chinese Journal of computers 2008年第10期31卷 1754-1767页

作者： Zhang, Fan Sun, Xuan Ma, Jian-Feng Cao, Chun-Jie Zhu, Jian-Ming Key Laboratory of Computer Networks and Information Security Xidian University Xi'an 710071 China Institute of Beijing Computer Technology and Application Second Academy China Aerospace Science and Industry Corporation Beijing 100854 China Huhhot Railway Bureau Huhhot 010020 China School of Information Central University of Finance Economics Beijing 100081 China

Supply chain management is the major field for RFID application. However, little work has been conducted to address the security issues in this context. Existing RFID solutions cannot be applied directly in this field because of a set of special RFID security requirements to be addressed for supply chain management. The major contribution of this paper is to identify the unique set of security requirements for secure RFID communications in supply chains, propose a universally composable model that satisfies the security requirements, and design a lightweight protocol that realizes the universally composable model. This paper further defines the security requirement of unlinkability, and classifies the typical RFID protocols according to the security requirements.

关键词： Supply chain management

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A Verifiable (t, n) Multiple Secret Sharing Scheme and Its Analyses

A Verifiable (t, n) Multiple Secret Sharing Scheme and Its A...

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International Symposium on Electronic Commerce and Security

作者： Liaojun Pang Huixian Li Ye Yao Yumin Wang Ministry of Education Key Laboratory of Computer Networks and Information Security Xidian University Xi'an Shaanxi China School of Computer Science and Engineering Northwestern Polytechnical University Xi'an Shaanxi China

ISBN: (纸本)9780769532585

In 2000, a new type of multi-secret sharing scheme, called the multiple secret sharing scheme, is proposed by Chien et al., in which more than one secret instead of only one secret can be shared in the same sharing session. In 2004, Yang et al. proposed another implementation of the above scheme based on Shamir's secret sharing to reduce the complexity of computation. In 2005, Pang et al. also proposed a more efficient implementation of Yangpsilas scheme. However, all these schemes have no property of verification and cannot authenticate the entity of the participant and the message. Motivated by these concerns, a new verifiable (t, n) multiple secret sharing scheme is proposed, which is based on Pang et alpsilas scheme. And then, some analyses are made on the proposed scheme.

关键词： Cryptography Polynomials Elliptic curves Security Mathematics Block codes Public key

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OBJECTIVE INCREMENT BASED HYBRID GA FOR NO-WAIT FLOWSHOPS

OBJECTIVE INCREMENT BASED HYBRID GA FOR NO-WAIT FLOWSHOPS

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2008 International Conference on Machine Learning and Cybernetics(2008机器学习与控制论国际会议)

作者： XIA ZHU XIAOPING LI QIAN WANG School of Computer Science and Engineering Southeast University Nanjing P.R.China Key Laboratory of Computer Network and Information Integration Ministry of Education Southeast University Nanjing P.R.China

No-wait flowshops with flowtime minimization are typical NP-Complete combinatorial optimization problems, widely existing in practical manufacturing systems. Different from traditional methods by which objective of a new schedule being completely computed objective increment methods are presented in this paper by which the objective of an offspring being obtained just by objective increments and computational time can be considerably reduced. HGAI (Hybrid GA based on objective Increment) is proposed by integrating genetic algorithm with a local search method. A heuristic is constructed to generate an individual of initial population and a crossover operator is introduced for mating process. HGAI is compared with two best so far algorithms for the considered problem on 110 benchmark instances. Computational results show that HGAI outperforms the existing two in effectiveness with a little more computation time.

关键词： No-wait flowshops Flowtime Objective increment Hybrid genetic algorithm

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A NEW HYBRID GENETIC ALGORITHM FOR THE BI-CRITERIA NO-WAIT FLOWSHOP SCHEDULING PROBLEM WITH MAKESPAN AND TOTAL FLOW TIME MINIMIZATION

A NEW HYBRID GENETIC ALGORITHM FOR THE BI-CRITERIA NO-WAIT F...

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2008 International Conference on Machine Learning and Cybernetics(2008机器学习与控制论国际会议)

作者： YOU-GEN LIU XIA ZHU XIAO-PING LI School of Computer Science and Engineering Southeast University Nanjing P.R.China Key Laboratory of Computer Network and Information Integration Ministry of Education Southeast University Nanjing P.R.China

Multi-objective flowshop scheduling problems have gained wide attention both in practical and academic fields. In this paper, a hybrid multi-objective genetic algorithm is proposed to solve multi-objective no-wait flowshop scheduling problems with both the makespan and the total flow time minimization. The proposed algorithm makes use of the principle of non-dominated sorting, coupled with the use of elitist solutions strategy. To improve efficiency, two effective multi-objective local search procedures based on objective increment are applied on each chromosome in the archive. Experimental results show that the proposal outperforms the other three heuristics both on effectiveness and efficiency.

关键词： Bi-criteria No-wait flowshop Objective increment Genetic algorithm

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An Identity-based Broadcast Encryption Protocol for Ad Hoc networks

An Identity-based Broadcast Encryption Protocol for Ad Hoc N...

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The 9th International Conference for Young computer Scientists(第九届国际青年计算机大会)

作者： Leyou Zhang Ningbo Mu Yupu Hu Department of mathematical science Xidian University Xi'an ShaanXi Province 710071 China Key Laboratory of Computer Networks and Information Security Ministry of Education Xidian University

An identity-based broadcast encryption protocol for ad hoc networks is proposed. Whenever a new mobile ad hoc network is formed, the proposed protocol only requires each group member to broadcast his/her identity to construct the group key, which avoids a large number of message exchanges between group members like group key management protocols proposed previously. Hence it is highly efficient in terms of member removal to construct a new network. In addition, our protocol is also efficient in computation since the encryption and the decryption only require two bilinear pair computations. Furthermore, we show that the new protocol is provably secure under the standard model.

关键词： Group key generation protocol identitybased encryption broadcast encryption provably secure standard model

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DECISION SUPPORT SYSTEM OF VARIABLE RATE IRRIGATION BASED ON MATHEMATICAL MODEL AND GIS

DECISION SUPPORT SYSTEM OF VARIABLE RATE IRRIGATION BASED ON...

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第一届国际计算机与计算技术在农业中的应用研讨会

作者： Jianjun Zhou Gang Liu Su Li Xiu Wang Man Zhang Key Laboratory of Modern Precision Agriculture System Integration Research China Agricultural University Computer College Beijing Technology and Business University National Engineering Research Center for Information Technology in Agriculture

Owing to the difference of soil water in the farm,a system of variable rate irrigation was developed with Visual C++ and MapObjects that can save water as well as can improve economy *** water content can be forecasted by using the forecast model of soil water,according to the real soil water content of different sampling sites in this *** or not can be decided by comparing the current soil content with the light drought and serious drought index of the *** water amount of irrigation can be decided by the analysis of economy benefit according to the model of water consumption-yield,thus the irrigation prescription map can be created..This system can also query the information of fields,manage and analysis the data of *** test was performed in national precision agriculture demo farm.

关键词： variable rate irrigation geographic information system model prescription

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CRMS: A Collusion-Resistant Matrix System for Group key Management in Wireless networks

CRMS: A Collusion-Resistant Matrix System for Group Key Mana...

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IEEE International Conference on Communications (ICC)

作者： W. Wang J. Ma S. Moon Key Laboratory of Computer Networks and Information Security (Ministry of Education) Xidian University Xi'an China Mobile Network Security Technology Research Center Kyungpook National University Daegu South Korea

In this paper, a collusion-resistant matrix system (CRMS) for group key managements is presented. The CRMS is defined as a collection of subsets of users, and the keys held by users in CRMS are organized in a hierarchical matrix manner. After describing the join and leave protocols, we prove that CRMS has lceil2N/trceil-collusion resistant capability. Moreover, the suggestion of how to select the parameters in CRMS is given. The simulated experiments show that CRMS is a practical group key management in wireless networks.

关键词： Wireless networks computer network management Communications Society Laboratories information security computer science education Protocols Technology management Moon National security

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Storage Requirements for key Distribution in Sensor networks

Storage Requirements for Key Distribution in Sensor Networks

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International Conference on Sensor Technologies and Applications, SensorComm

作者： Zhihong Liu Jianfeng Ma Qiping Huang SangJae Moon Key Laboratory of Computer Networks and Information Security of Ministry of Education Xidian University China School of Communication Engineering Xidian University China Mobile Network Security Technology Research Center Kyungpook National University South Korea

ISBN: (纸本)9781424432127

Sensor networks are resource-constrained, which makes developing efficient key distribution scheme a challenging problem. In general, many key distribution techniques are designed to address the trade-off between limited resources and security, no key distribution technique is ideal to all the scenarios where sensor networks are used. In this paper, we primarily focus on storage requirements of several key distribution schemes in sensor networks, and obtain their lower bounds on the amount of information each user has to keep secret by modeling the key distribution schemes with an information theoretic framework.

关键词： Cryptography Security Complexity theory Servers Entropy Memory management Protocols

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Secure Message Distribution Scheme with Configurable Privacy for Heterogeneous Wireless Sensor networks

Secure Message Distribution Scheme with Configurable Privacy...

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IEEE/IFIP International Conference on Embedded and Ubiquitous Computing, EUC

作者： YaHui Li Ding Yong JianFeng Ma Ministry of Education Key Laboratory of Computer Networks and Information Security Xidian University Xi'an China Sch. of Math. & Comput. Sci. Guilin Univ. of Electron. Technol. Guilin Guilin

Security and privacy of wireless sensor networks are key research issues recently. Most existing researches regarding wireless sensor network security consider homogenous sensor networks. To achieve better security and performance, we adopt a heterogeneous wireless sensor network (HWSN) model that consists of physically different types of sensor nodes. This paper presents a secure message distribution scheme with configurable privacy for HWSNs, which takes advantage of powerful high-end sensor nodes. The scheme establishes a message distribution topology in an efficient and secure manner. The sensor node can only generate one signature for all the messages for all the users, which can greatly save the communication and computation costs of the sensor node. On the other hand, the user can only know the messages intended for him based on a pre-set policy, which can meet the requirement of the privacy. We show that the scheme has small bandwidth requirements and it is resilient against the node compromise attack.

关键词： Privacy Wireless sensor networks Peer to peer computing information security computer networks Bandwidth computer science education Laboratories Public key cryptography Ubiquitous computing

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