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EUC 2006: Embedded and Ubiquitous Computing Workshops

作者： Yuan, Zheng Wen, Qiaoyan Wu, Wenling Zhang, Qing School of Science Beijing University of Posts and Telecommunications Beijing 100876 China Beijing Electronic Science and Technology Institute Beijing 100036 China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences Beijing 100080 China

ISBN: (纸本)3540368507

In this paper, we propose an identities(JD) based watermarking scheme for Java programs. In our scheme, the watermark is generated by participants' identities, embedded via the watermarked opaque predicates, and verified using zero-knowledge proof. We also present a construction of a family of opaque predicates by Legendre symbol, which is resilient, cheap, and stealthy. The order of the watermark is encoded and embedded into the watermarked opaque predicates, and the watermarked opaque predicates are treated as threads of a Java program. Thus, the embedded watermark is dynamic and secure against all usual types of watermarks algorithms attacks and watermarks protocols attacks, and also secure against static and dynamic attacks. © IFIP International Federation for Information Processing 2006.

关键词： Digital watermarking

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Access control model for P2P file-sharing systems based on trust and recommendation

Access control model for P2P file-sharing systems based on t...

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2006 2nd International Conference on Semantics Knowledge and Grid, SKG

作者： Yue, Guang-Xue Yu, Fei Chen, Yi-Jun Wu, Rong-Hui An, Ji-Yao Li, Ren-Fa College of Information Engineering JiaXing University JiaXing 314000 China State Key Lab. for Novel Software Technology Nanjing University Nanjing 210093 China State Key Laboratory of Information Security Graduate School Chinese Academy of Sciences Beijing 100049 China School of Computer and Communication Hunan University Changsha 410082 China

ISBN: (纸本)0769532055

The decentralized and anonymous characteristics of P2P environments make the task of controlling access to sharing information more difficult, which cannot be done by traditional access control methods. In this paper, the access control requirements in such environments were identified, and an access control model for P2P file-sharing systems based on trust and recommendation was proposed. The model integrates aspects of trust and recommendation, fairness based participation schemes and access control schemes. © 2006 IEEE.

关键词： Peer to peer networks

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Research on user authentication for grid computing security

Research on user authentication for grid computing security

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2006 2nd International Conference on Semantics Knowledge and Grid, SKG

作者： Ronghui, Wu Renfa, Li Fei, Yu Guangxue, Yue Cheng, Xu School of Computer and Communication Hunan University Changsha410082 China State Key Laboratory of Information Security Graduate School Chinese Academy of Sciences Beijing 100049 China Provincial Key Laboratory of Computer Information Processing Technology Jiangsu Province Suzhou University Suzhou 150063 China College of Informationg Engineering JiaXing University JiaXing 314000 China

ISBN: (纸本)0769532055

Recently, Authentication protocol has been recognized as an important factor for grid computing security. This paper described a new simple and efficient Grid authentication system providing user anonymity. Our system is based on hash function, and mobile users only do symmetric encryption and decryption. In our system, it takes only one round of messages exchange between the mobile user and the visited network, and one round of message exchange between the visited network and the corresponding home network. The proposed architecture possesses several desirable emerging properties that enable it to provide an improved level of security for grid computing systems.. © 2006 IEEE.

关键词： Grid computing

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Research on user authentication for grid computing security

Research on user authentication for grid computing security

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2nd International Conference on Semantics, Knowledge, and Grid, SKG 2006

作者： Wu, Ronghui Li, Renfa Yu, Fei Yue, Guangxue Xu, Cheng School of Computer and Communication Hunan University Changsha 410082 China State Key Laboratory of Information Security Graduate School Chinese Academy of Sciences Beijing 100049 China Provincial Key Laboratory of Computer Information Processing Technology Jiangsu Province Suzhou University Suzhou 150063 China College of Informationg Engineering JiaXing University JiaXing 314000 China

ISBN: (纸本)076952673X

关键词： Grid computing

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Narrowband audio hiding algorithm based on human auditory system

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beijing Youdian Daxue Xuebao/Journal of beijing University of Posts and Telecommunications 2006年第SUPPL. 2期29卷 101-104+121页

作者： Yuan, Kai-Guo Yang, Ya-Tao Zhang, Ru Niu, Xin-Xin Yang, Yi-Xian Information Security Center Beijing University of Posts and Telecommunications Beijing 100876 China State Key Laboratory of Switching and Networking Beijing University of Posts and Telecommunications Beijing 100876 China Department of Communication Engineering Beijing Electronic Science and Technology Institute Beijing 100070 China

After studying about human auditory system and narrowband communications system model, a narrowband audio hiding algorithm based on human auditory system was presented. A lot of experiments proved that the algorithm had strong robustness to prevent many attacks from such as D/A, A/D, channel noise and so on. In time domain, frequency domain, especially for hearing, it had high transparence. What's more, the algorithm, whose hiding capacity reached up to 20 bit/s, had intelligent blind detection property and can be used in many domains.

关键词： Audio systems

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Data distribution algorithm of high-speed intrusion detection system based on network processor

Data distribution algorithm of high-speed intrusion detectio...

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2nd International Conference on Semantics, Knowledge, and Grid, SKG 2006

作者： Xu, Cheng Yu, Fei Dai, Zhenghui Yue, Guangxue Li, Renfa School of Computer and Communication Hunan University Changsha 410082 China Provincial Key Laboratory of Computer Information Processing Technology Jiangsu Province Suzhou Jiangsu 2150063 China State Key Laboratory of Information Security Graduate School Chinese Academy of Sciences Beijing 100049 China College of Informationg Engineering JiaXing University JiaXing 314000 China

ISBN: (纸本)076952673X

Because the processing speed of intrusion detection system can hardly keep pace with the high-speed development of network, improving the speed of intrusion detection has been the problem starved for solve. By adopting the network processor, a distribution algorithm based on protocol analysis has been realized. By delivering the captured data package to each detect node according to protocol types and then accomplishing the detection for data package through the collaboration of the detect nodes, the processing efficiency of the intrusion detection system has been improved as a whole. © 2006 IEEE.

关键词： Intrusion detection

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security analysis of some batch verifying signatures from pairings

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International Journal of Network security 2006年第2期3卷 138-143页

作者： Cao, Tianjie Lin, Dongdai Xue, Rui School of Computer Science and Technology China University of Mining and Technology Xuzhou 221008 China State Key Laboratory of Information Security of Institute of Software Chinese Academy of Sciences Beijing 100080 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China

Batch verification can provide large computational savings when multiple signatures are verified together. Recently, some batch verifying signature schemes have been proposed from bilinear pairings. In this paper, we show that an attacker can cheat a verifier to accept invalid signatures in these batch verifying schemes. We also show that randomized batch verification technique can be used to avoid these attacks.

关键词： Network security

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The intelligent research of image recognition used for unattended substation

The intelligent research of image recognition used for unatt...

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2006 China International Conference on Electricity Distribution, CICED 2006

作者： Yang, Jun Ai, Xin Jia, Xiufang Li, Yansong Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control Ministry of Education North China Electric Power University Deshengmenwaizhuxinzhuang Beijing 102206 China Electric Power Company Jinzhou Engineering Technology Department Liaohe Petroleum Exploration Bureau Liaoning Province Linghai 121209 China

ISBN: (纸本)0863416381

It is a trend to construct unattended substation in power system *** paper systematically analyses the superiority and limitation of MATLAB and Visual C++ and illustrates how to compile m-files to cpp-files by MATLAB engines and integrate cpp-files code into existing C++ projects by Visual C++ to realize intelligent function on image recognition used for unattended *** intelligent function can effectively test illegal intrusion and fires through the detection and recognition of moving goals by three-image difference method and self-adapting threshold value segmentation algorithm and detect situations of disconnection link by use of image crop and image index processing and give warnings to alarm system. Because of lacking of brightness of image or nonlinear brightness and being influenced by kinds of noise,this paper determines to adopt contrast enhanced algorithm and high-frequency enhanced algorithm to repair grey-scale distribution and uses median filtering to remove noise of image. In the end,this paper brings forward the expectation about the image recognition of the unattended substation. When non-uniform of image illumination distribution, grey-scale of background changes largely and image segmentation has not the fittest threshold, so the paper uses self-adapting threshold segmentation algorithm to gain the image segmentation.

关键词： Image segmentation

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News video story segmentation

News video story segmentation

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International Conference on Multimedia Modeling (MMM)

作者： Yong Fang Xiaofei Zhai Jingwang Fan Electronic Science and Technology Institution Key Laboratory of Security and Secrecy of Information Beijing Beijing China School of Telecommunication Engineering Beijing University of Posts and Telecommunications Beijing China School of Communication Engineering Yanshan University슠 Qinhuangdao China

This paper presents a two-level framework for news video segmentation. Our framework is established-based upon a similar framework as in. We extended the original framework by adding rule-based pre-segmentation module, similarity measurement module and new features. We perform decision tree at the shot level and HMM (hidden Markov models) analysis at the story level, respectively. Experiment result with a training set of 24 hours (967 story units) news video from CCTV-9 (China Central TV-International) and a testing set of 24 hours (779 story units) news video from several TV-channels show that our semi-automatic system can achieve 81.5% of F1 value in the case of CCTV-9

关键词： Face detection Gunshot detection systems Decision trees Hidden Markov models Layout Feature extraction Classification tree analysis Weather forecasting Laboratories Information security

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Research on Network anomaly Detection Based on Clustering and Classifier

Research on Network anomaly Detection Based on Clustering an...

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International Conference on Computational Intelligence and security

作者： Hongyu Yang Feng Xie Yi Lu Software Research Center Tianjin Key Laboratory for Advanced Signal Processing Civil Aviation University of China Tianjin China Institute of Computing Technology Chinese Academy and Sciences Beijing China Security and Cryptography Laboratory Swiss Federal Institute of Technology Lausanne Switzerland

ISBN: (纸本)1424406048

In this paper, we propose a method to find the anomalous behaviors in network traffic. We map the network connection records into different feature spaces typically of high dimension according to their protocols and services. In training, we perform clustering to group training data points into clusters, from which we select some clusters as normal and known-attack profile according to a simple, but effect, criterion. For those training data excluded from the profile, we use them to build a specific classifier. The classifier has two distinct characteristics: one is that it regards each data point in the feature space with the limited influence scope, which is served as the decisive bounds of the classifier, and the other is that it has the "default" label to recognize those novel attacks. We present a novel classification algorithm, influence-based classification algorithm, to deal with ambiguous data. Our system is tested on the KDD Cup 1999 data. Results show that it is superior to other data mining based approaches in detection performance, especially in detection of PROBE and U2R attacks

关键词： Intrusion detection Training data Classification algorithms Data mining Data security Information security Computer networks Space technology Signal processing algorithms Algorithm design and analysis

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