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第八届国际移动商务会议(Eighth International Conference on Mobile Business)

作者： Zuowen Tan School of Information Technology Jiangxi University of Finance & EconomicsNanchang 330013JiangxiChina State Key Laboratory of Information Security Institute of Software of Chinese Academy of SciencesBeijing 100080China Key Lab of Network Security and

Recently,Rhee,Kwon and Lee proposed a practical authentication scheme only based on the common storage *** the scheme the remote user does not need to use smart *** is convenient for the users to use a common storage device such as a universal serial bus *** scheme is easy to ***, this authentication scheme is vulnerable to impersonation attacks and middle man *** attacker could impersonate legitimate users to login and access the remote *** addition,we analyze the security of Fan-Chan-Zhang's *** scheme suffers from replay attacks and impersonation attacks.

关键词： authentication replay password smart card impersonation attacks

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Research on Man-in-the-Middle Denial of Service Attack in SIP VoIP

Research on Man-in-the-Middle Denial of Service Attack in SI...

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International Conference on Networks security, Wireless Communications and Trusted Computing, NSWCTC

作者： Zhe Chen Shize Guo Kangfeng Zheng Haitao Li Key Laboratory of network and information attack & defence technology of MOE National Engineering Laboratory of Disaster Backup and Recovery Beijing University of Posts and Telecommunications Beijing China Information Security Center State Key Laboratory of Networking and Switching Technology National Engineering Laboratory of Disaster Backup and Recovery Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781424442232

As the number of VoIP users increase and as the deployment of SIP devices gains ground, security has risen as a potential issue worthy of our consideration. VoIP is an application running on the data network and as such, inherits the security issues common to IP. The man-in-the-middle (MitM) attacks and the denial of service (DoS) attacks are the hackneyed and evil cyber attacks in the IP which can be easily implemented in the SIP VoIP. In this paper, a unified communication model of SIP VoIP infrastructure is established to analyze the DoS attacks launched by the MitM (MitM-DoS). Then we use the set theory to research the models of MitM-DoS attacks formally.

关键词： Computer crime IP networks Information security Laboratories Internet telephony Protocols National security Communication switching Data security Web and internet services

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A NOVEL MODEL FOR QUERY OVER ENCRYPTED XML DATABASES

A NOVEL MODEL FOR QUERY OVER ENCRYPTED XML DATABASES

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2009 IEEE International Conference on Network Infrastructure and Digital Content(2009年IEEE网络基础设施与数字内容国际会议 IEEE IC-NIDC2009)

作者： Nian Liu Yajian Zhou Xinxin Niu Yixian Yang Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications Beijing National Engineering Laboratory for Disaster Backup and RecoveryBeijing University of Posts and Telecommu

ISBN: (纸本)9781424448999;9781424448982

In recent years, there has been increasing concern about "Database as a Service"(DAS) architectures. Data security is the overriding concern in DAS, and encryption is a natural solution. However, queries over encrypted databases are usually inefficient due to a heap of time on the encryption and decryption. In this paper, we present an encryption scheme and XQuery translation model of XML database. The major work and contribution of this paper are as below: 1) Splitting method is proposed in the encryption scheme, in which more flexible encryption granularity is obtained. 2) We put forward the encryption strategy that, by encrypting two or more fragments together, is efficient to resist various kinds of database attack owing to the changed ciphertext distribution and data size by splitting. 3) An XQuery translation model is introduced, by converting the query of XML data into that of relational data, combined with XML Schemas Compression and hash technology, which perform the XQuery language efficiently. Our experimental evaluation shows that our XML database encryption and query model achieves both excellent query efficiency and robust security.

关键词： XML Database Encryption XQuery

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Extracting Real-Life Log with Data Perspective in PLM System for Business Process Analysis

Extracting Real-Life Log with Data Perspective in PLM System...

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Computer Science and Information engineering, CSIE, WRI World Congress on FLAGGED

作者： Wang Zhaoxia Wang Jianmin Wen Lijie Liu Yingbo School of Software Tsinghua University Beijing China Department of Logistical Information Engineering Logistical Engineering University Chongqing China Key Laboratory of Information System Security Ministry of Education China

Event log is the important starting point of any process analysis technique. Existent business process analysis techniques are applied mainly to manual or simulated logs, considering mainly information about control perspective. In this paper, we first analyze the feature of data perspective of PLM (product lifecycle management) system in manufacturing area, and extend the MXML format to support the log with data perspective information in PLM domain. Subsequently, we introduce an approach of data cleaning to separate the multi-version process information in real-life data set. In the end, we produce real-life log with information about data perspective in PLM system, then, mine the process model from real-life log and evaluate the proposed approach by fitness measuring.

关键词： Data mining Business Information analysis Data engineering Cleaning Computer science Laboratories Information systems Computer security Data security

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A real-time schedule method for aircraft landing scheduling problem based on cellular automaton 09

A real-time schedule method for aircraft landing scheduling ...

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2009 World Summit on Genetic and Evolutionary Computation, 2009 GEC Summit - 1st ACM/SIGEVO Summit on Genetic and Evolutionary Computation, GEC'09

作者： Shenpeng, Yu Xianbin, Cao Maobin, Hu Wenbo, Du Jun, Zhang Department of Computer Science and Technology University of Science and Technology of China Hefei 230026 86-551-3601545 China Anhui Province Key Laboratory of Software in Computing and Communication Hefei 230026 China School of Engineering Science University of Science and Technology of China Hefei 230026 86-551-3600127 China School of Electronic and Information Engineering Beihang University Beijing 100083 China

ISBN: (纸本)9781605583266

The Aircraft Landing Scheduling (ALS) problem is a typical hard multi-constraint optimization problem. In real applications, it is not most important to find the best solution but to provide a feasible landing schedule in an acceptable time. We propose a novel approach which can effectively solve the ALS while satisfying the real-time need. It consists of two steps: (i) Use CA to simulate the landing process in the terminal airspace and to find a considerably good landing sequence;(ii) a simple Genetic Algorithm associated with a Relaxation Operator is used to obtain a better result based on the CA result. Experiments have shown that our method is much faster and suitable for real-time ALS problem compared with traditional optimization methods. For all the 13 data sets, the proposed approach can find satisfactory solutions in less than 2 seconds. Copyright 2009 ACM.

关键词： Cellular automata

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SWSCF: A semantic-based Web service composition framework

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Journal of Networks 2009年第4期4卷 290-297页

作者： Hu, Jianqiang Li, Juanzi Zeng, Zhiyong State Key Laboratory of Software Engineering Wuhan University Hubei China Department of Computer Science and Technology Tsinghua University Beijing China Software Faculty Fujian Normal University Fuzhou China Department of Computer Science and Technology Tsinghua University Beijing China

Web service composition is gaining a considerable momentum as an approach to the effective integration of distributed, heterogeneous, and autonomous application. Current composed service processes are mostly generated in the syntactic level and in a manual way. The limitation of the approach is that it does not allow business to dynamic change partners and services. In order to avoid this disadvantage, it is critical to map complex business from abstract process to executable flows according to application domain semantics and dynamic business requirements. In this paper, we first present a semantic-based Web service composition framework called SWSCF based on both semantic process recommendation and semantic matchmaking. Then, we analyze some key technologies including: (1) Introducing hierarchical activity mechanism for dynamic decomposition of business requirements to find a suitable semantic process template;(2) Searching and selecting service chain to match a semantic activity template which is used to specify an abstract activity;(3) Devising heterogeneous message transforming mechanism to eliminate the incompatible message types during generating data flow of an executable process. Furthermore, by comparison with some service composition frameworks, we prove SWSCF to be more flexible and effective. © 2009 ACADEMY PUBLISHER.

关键词： Semantics

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Privacy aware engineering: A case study

Journal of Software

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Journal of software 2009年第3期4卷 218-225页

作者： Ye, Xiaojun Zhu, Zhiwu Peng, Yong Xie, Feng Key Laboratory for Information System Security Ministry of Education School of Software Tsinghua University Beijing 100084 China Evaluation Equipment R and D Lab China Information Technology Security Evaluation Center Building A No. 8 Yard of Shangdi Xilu Haidian District Beijing 100085 China

Privacy is a complex social process that will persist in one form or another as a fundamental feature of software engineering. For successful privacy aware engineering, it is critical to guarantee the alignment and compliance among privacy artifacts emerging during software development process. In this paper, we propose a privacy compliance engineering flow in which we investigate the involved necessary privacy artifacts and discuss their alignment, refinement, and compliance verification. Within an exemplary case study, we identify the privacy artifacts introduced in the refinement process and analyze their compliance verification. © 2009 ACADEMY PUBLISHER.

关键词： software design

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A Service-oriented Programming Platform for Internet-Based Virtual Computing Environment

A Service-oriented Programming Platform for Internet-Based V...

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International Conference on Parallel and Distributed Systems (ICPADS)

作者： Donggang Cao Zan Xiao Weizhong Shao School of Electronics Engineering and Computer Science Key Laboratory of High Confidence Software Technology Ministry of Education Peking University Beijing China

This paper describes a service oriented programming platform for Internet-based virtual computing environment (iVCE), which is targetted for enabling collaboration among autonomous entities over Internet. This platform provides mechanisms and facilities to help iVCE programmers write and run applications in a relatively stable and trusted environment. In this platform, autonomous entities first voluntarily join in virtual community attracted by common interests. Then entities will selectively play specific roles predefined in collaboration process which is specified in a declarative language named APEL. Capability requirements and environment specifications are also provided to enable negotiation and adaptation while process is executed. All business interfaces and negotiation interfaces are published using standard Web services to maximize reuse and interoperation.

关键词： Web and internet services Collaboration Virtual colonoscopy Programming profession Identity management systems Runtime environment Parallel programming Concurrent computing Distributed computing Collaborative software

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Real-Time Rendering of Translucent Objects with Variable Sizes

Real-Time Rendering of Translucent Objects with Variable Siz...

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11th IEEE International Conference on Computer-Aided Design and Computer Graphics(第11届IEEE国际计算机辅助设计与图形学学术会议 IEEE CAD/GRAPHICS 2009)

作者： Chunhui Yao Bin Wang School of Software Tsinghua University Beijing China 100084 Department of Computer Science and Technology Tsinghua University Beijing China 100084 Key Laboratory for Information System Security Ministry of Education Beijing China 100084 Tsinghua

We present a novel technique for real-timely rendering translucent objects. Our technique is mainly based on translucent shadow maps with a new adaptive sampling strategy. In this sampling strategy, the hierarchy levels and positions for sampling are selected according to the size of target object. By our optimization, less storage in the texture is required than that in previous methods. Compared with previous methods, our technique provide a way to choose the proper sampling pattern and is applicable for a wider range of object sizes. With the implementation on GPU, the presented technique is able to render translucent objects in animated scenes where lights and material parameters vary real-timely without any lengthy preprocessing.

关键词： Rendering (computer graphics) Mobile computing Testing Graphics Cranes Control systems Computer architecture Helium Virtual reality Computer science

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Research on Model of Trust Degrees for PKI

Research on Model of Trust Degrees for PKI

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The Fifth International Conference on Information Assurance and security(第五届信息保障与安全国际会议)

作者： Mingde ZHANG Xuefeng ZHENG Wensheng YANG Shuwang LV Qingguo ZHANG School of Information Engineering University of Science and Technology Beijing Beijing China Beijing Itownet Cyber Tech.Ltd.Beijing China State Key Laboratory of Information Security Beijing China University of Science and Technology Beijing Beijing China

ISBN: (纸本)9780769537443

In order to improve the accuracy of trust evaluation of subscribers (or key holders) from relying parties'point of view, a new model of trust degrees for PKI is proposed. By analyzing the security risks during the applying and using process of certificates and private keys, we introduce non-trust factor (NTF);then based on NTF, a method for trust degrees of keys is presented. Comparing with the existing work, the model integrates several critical factors which influence trust degrees of keys into one formula, thus improving the accuracy of trust evaluation for PKI and being applicable to a variety of PKI trust models.

关键词： PKI Non-Trust Factor (NTF) Trust Degrees Model

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