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International Wireless Communications and Mobile Computing Conference, IWCMC

作者： Fangwei Wang Yunkai Zhang Jianfeng Ma Network Center Hebei Normal University Shijiazhuang China Key Laboratory of Computer Networks and Information Security Xidian University Xi'an China Key Laboratory of Computer Networks and Information Security of Ministry of Education Xidian University Xi'an China

In order to speed up the propagating process, the worms need to scan many IP addresses to target vulnerable hosts. However, the distribution of IP addresses is highly nonuniform, which results in many scans wasted on invulnerable addresses. Inspired by the theory of good point set, this paper proposes a new scanning strategy, referred to as good point set scanning (GPSS), for worms. Experimental results show that GPSS can generate more distinct IP addresses and less unused IP addresses than the permutation scanning. Combined with group distribution, a static optimal GPSS is derived. Since the information can not be easily collected before a worm is released, a self-learning worm with GPSS is designed. Such worm can accurately estimate the underlying vulnerable-host distribution when a sufficient number of IP addresses of infected hosts are collected. We use a modified Analytical Active Worm Propagation (AAWP) to simulate data of Code Red and the performance of different scanning strategies. Experimental results show that once the distribution of vulnerable hosts is accurately estimated, a self- learning worm can propagate much faster than other worms.

关键词： Grippers IP networks Internet Routing Servers Equations Web server

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MPMAC and its security analysis

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Beijing Gongye Daxue Xuebao / Journal of Beijing University of Technology 2008年第SUPPL. 2期34卷 62-66页

作者： Zhang, Shao-Lan Yang, Yi-Xian Xing, Guo-Bo 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 Defense Technology of MOE Beijing University of Posts and Telecommunications Beijing 100876 China School of Computer Science and Technology Shandong Jianzhu University Jinan 250101 China

According to the weakness of mode of operation, a modified parallelizable message authentication code (MPMAC) is proposed. The mode to process the last block of message is improved to avoid the forgery attack with random message by using the fact that the block cipher has same output with the same input using a key. Its security is proved by quantifying the advantage of distinguishing message authentication code from the random function in terms of the quality of the block cipher as a pseudo-random permutation.

关键词： Authentication

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Fault-tolerant Method for Temporal Error in Data Acquisition of On-Board-computer

Fault-tolerant Method for Temporal Error in Data Acquisition...

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第二届国际测量仪器与测试自动化学术会议

作者： Wang Ping~(1,2) (1.Electric and information College,Xihua University,Chengdu,610039,China) (2.Shandong Province computer network key laboratory,Shandong computer Science Center,Jinan,250014,China) Electric and Information College Xihua UniversityChengdu610039China Shandong Province computer network key laboratory Shandong Computer Science CenterJinan250014China

Sensor data error is one of the important reasons of satellite mission *** eliminate the negative influence of error sensor data,prediction methods are used to tolerate the temporal error of satellite data acquisition *** expound the effect of curve fitting prediction and Lagrange interpolation *** the limit of satellite on-board-computer memory,we find that the curve fitting can tolerate the sensor error better with finite *** showed that the error rate between prediction value and real value is lower than 1% when there is no fault in *** technique can use to check the correctness of sensor data,and tolerate the error data when sensor is disturbed,and then improve the reliability of satellite control system.

关键词： Fitting extrapolation Fault-Tolerant

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A Novel Generation key Scheme Based on DNA

A Novel Generation Key Scheme Based on DNA

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International Conference on Computational Intelligence and Security

作者： Xin-she Li Lei Zhang Yu-pu Hu Xi'an Research Inst. of Hi-Tech Xi'an China Ministry of Education Key Laboratory of Computer Network & Information Security XiDian University Xi'an China

A novel generation key scheme based on DNA is proposed. By using a key expansion matrix, the scheme improves the independence and the strict avalanche of the key. Although it increases computation amount because of using the matrix operation, the random number can be generated by the DNA sequence directly and the speed of the computation is greatly improved. Therefore, the new scheme has wide application in the field of the block cipher, data signature, identity authentication, et al.

关键词： Sequences Random number generation Databases information security DNA computing Authentication Computational intelligence computer security computer science education Laboratories

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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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Decision support system of variable rate irrigation based on mathematical model and GIS

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IFIP Advances in information and Communication Technology 2008年 259卷 1011-1019页

作者： Zhou, Jianjun Liu, Gang Li, Su Wang, Xiu Zhang, Man Key Laboratory of Modern Precision Agriculture System Integration Research China Agricultural University Beijing100083 China Computer College Beijing Technology and Business University Beijing100037 China National Engineering Research Center for Information Technology in Agriculture Beijing100089 China

ISBN: (纸本)9780387772523

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 benefit. Soil 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 system. Irrigation or not can be decided by comparing the current soil content with the light drought and serious drought index of the crop. 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 soil. The test was performed in national precision agriculture demo farm. © 2008, Springer New York LLC. All rights reserved.

关键词： Geographic information systems

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keying material based key pre-distribution scheme

Keying material based key pre-distribution scheme

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IEEE International Conference on Intelligence and Security Informatics, ISI

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

A key pre-distribution scheme is a method by which initially an off-line trusted authority T A distributes pieces of information among a set of users. Later, each member of a group of users can compute a common key for secure communication. In this paper we present a keying Material Based key Pre-distribution Scheme, i.e., a group of users, using secret information preloaded in their memory and some public information retrieved from a keying material server, can compute a common key. We first formally define the keying material based key pre-distribution scheme in terms of the entropy, and give lower bounds on the amount of information each user has to keep secret. Then, we describe its applications for sensor networks.

关键词： Base stations information security Moon information retrieval network servers Public key cryptography computer networks Electronic mail National security Protocols

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Action-Based Access Control Modelt

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电子学报(英文版) 2008年第3期17卷 396-401页

作者： LI Fenghua WANG Wei MA Jianfeng Sang JaeMoon Key Laboratory of Computer Networks and Information Security (Ministry of Education) Xidian University Xi＇an 710071 China) Graduate School Beijing Electronic Science and Technology Institute Beijing 100070 China) Mobile Network Security Technology Research Center Kyungpook National UniversitySankyuk-dong~ Buk-ku~ Daeyu 702-701~ KoreaI

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