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2009 WRI World Congress on computer science and information Engineering, CSIE 2009

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

ISBN: (纸本)9780769535074

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. © 2008 IEEE.

关键词： Life cycle

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Secure authentication and authorization scheme for mobile devices

Secure authentication and authorization scheme for mobile de...

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2009 IEEE International Conference on Communications technology and Applications, IEEE ICCTA2009

作者： Jian, Wang Nan, Jiang School of Computer and Information Technology Beijing Jiaotong University Beijing China College of Computer Science Beijing University of Technology Beijing China Key Laboratory of Communication and Information System Beijing Municipal Commission of Education Beijing Jiaotong University Beijing China

ISBN: (纸本)9781424448203

Future mobile devices are expected to access different networks (such as 3rd generation network, WLAN, Bluetooth, Internet, and etc). Hence many sensitivity data are stored in them. How to protect the security of information and applications about mobile devices becomes an exigent problem. This paper proposes a secure authentication and authorization protocol for mobile devices. The protocol employs biometric identification and password mechanism. Different users could access different information and applications, which are associated with different security levels. Users, mobile equipments and universal subscriber identity module (USIM) could mutual authenticate. Messages are encrypted when they are exchanged. ©2009 IEEE.

关键词： Authentication

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Distributed Certificateless key Encapsulation Mechanism Secure Against the Adaptive Adversary

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Journal of Shanghai Jiaotong university(science) 2009年第1期14卷 102-106页

作者：龙宇李祥学陈克非洪璇 Department of Computer Science and Engineering Shanghai Jiaotong UniversityShanghai 200240China School of Information Security Engineering Shanghai Jiaotong UniversityShanghai 200240China State Key Laboratory of Integrated Service Networks Xidian UniversityXi'an 710071China

This paper proposes an adaptively secure solution to certificateless distributed key encapsulation mechanism from pairings by using Canetti＇s adaptive secure key generation scheme based on discrete logarithm. The proposed scheme can withstand adaptive attackers that can choose players for corruption at any time during the run of the protocol, and this kind of attack is powerful and realistic. In contrast, all previously presented threshold certificateless public key cryptosystems are proven secure against the more idealized static adversaries only. They choose and fix the subset of target players before running the protocol. We also prove security of this scheme in the random oracle model.

关键词： adaptive security certificateless key encapsulation mechanism chosen-ciphertext attack

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A hierarchical routing architecture for the aviation communication network

A hierarchical routing architecture for the aviation communi...

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2009 Second ISECS International Colloquium on Computing, Communication, Control, and Management, CCCM 2009

作者： Yuan, Wang Hua, Xu Peifa, Jia State Key Laboratory on Intelligent Technology and Systems Tsinghua University Beijing China Tsinghua National Laboratory for Information Science and Technology Tsinghua University Beijing China Department of Computer Science and Technology Tsinghua University Beijing China

ISBN: (纸本)9781424442461

Aviation communication network is composed of various kinds of IP-enabled aerial mobile Ad Hoc network, IP-enabled ground network and aerial data link system that don't support IP protocol. Satellite data links would also be available in the future. Different types of networks and systems construct one hierarchical network structure, so single routing protocol or incompatible protocols couldn't be applied to such a kind of network at the same time. This paper, for the first time, proposes a hierarchical routing architecture, which is able to accommodate the unique characteristics of military aviation communication network, which has been verified by computer simulations. The proposed architecture provides multiple routing protocols that can be used for diverse networks and scenarios, and also solutions of inter-operation between different network routing protocols, enabling the architecture suitable for hierarchical heterogeneous networks, which present valuable guidelines for the designs of the routing method in aviation communication network. ©2009 IEEE.

关键词： Routing protocols

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Conflict driven scan chain configuration for high transition fault coverage and low test power

Conflict driven scan chain configuration for high transition...

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Asia and South Pacific Design Automation Conference

作者： Zhen Chen Boxue Yin Dong Xiang Department of Computer Science and Technology Tsinghua University Beijing China School of software Key Laboratory of Information System Security Ministry of Education Tsinghua National Laboratory of Information Science and Technology Tsinghua University Beijing China School of software Key Laboratory of Information System Security Ministry of Education Tsinghua National Laboratory of Information Science and Technology Tsinghua University Beijing China

ISBN: (纸本)9781424427482

Two conflict-driven schemes and a new scan architecture based on them are presented to improve fault coverage of transition fault. They make full use of the advantages of broadside, skewed-load and enhanced scan testing, and eliminate the disadvantages of them, such as low coverage, fast global scan enable signal and hardware overhead. Test power is also a challenge for delay testing, so our method tries to reduce the test power at the same time. By the analysis of the functional dependency between test vectors in broadside testing and the shift dependency between vectors in the skewed-load testing, some scan cells are selected to operate in the enhanced scan and skewed-load scan mode, while others operate in traditional broadside mode. In the architecture, scan cells with common successors are divided into one chain. With the efficient conflict driven selection methods and partition of scan cells, fault coverage can be improved greatly and test power can be reduced, without sacrificing the test time and test data. Experimental results show that the fault coverage of the proposed method can reach the level of enhanced scan design.

关键词： Circuit faults Circuit testing Delay Automatic test pattern generation Educational technology Laboratories Fault detection Switches Multiplexing Software testing

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A security Model for VoIP Steganography

A Security Model for VoIP Steganography

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The First International Conference on Multimedia information Networking and security(第一届国际多媒体网络信息安全会议 MINES 2009)

作者： Zhiwei Yu Clark Thomborson Junning Fu Jianmin Wang Chaokun Wang Department of Computer Science and Technology Tsinghua University Department of Computer Science The University of Auckland New Zealand School of Software Tsinghua University Key Laboratory for Information System Security Ministry of

In 2005, an extensive taxonomy of threats for VoIP was published by a prominent industry group. Strangely, this taxonomy does not identify stegocommunication as a threat, even though many steganographic channels have been identified in VoIP protocols. To avoid such security gaps in the future, we argue that stegocommunication should be added to the traditional list of network threats: interruption, interception, modification, fabrication. The stegocommunication threat arises when the communication channel is purchased, provided, or supervised by anyone other than the communicating parties. We illustrate a stegocommunication threat to a business owner Charles. If Charles purchases a VoIP service for business-related communications by an employee Alice, then he faces the risk that Alice may undetectably communicate a business secret to an outside party Bob. In this insider-threat scenario, Charles can mitigate his security risk by installing a stegodetector.

关键词： VoIP Steganography security Model

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ARRAY: A non-application-related, secure,wide-area disaster recovery storage system

ARRAY: A non-application-related, secure,wide-area disaster ...

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2009 IEEE International Symposium on Parallel and Distributed Processing with Applications, ISPA 2009

作者： Zeng, Lingfang Feng, Dan Veeravalli, Bharadwaj Wei, Qingsong Division of Data Storage System Wuhan National Laboratory for Optoelectronics Key Laboratory of Information Storage Wuhan 430074 China School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China Department of Electrical Computer Engineering National University of Singapore Singapore 117608 Singapore Data Storage Institute Singapore 117608 Singapore

ISBN: (纸本)9780769537474

With our society more information-driven, we have begun to distribute data in wide-area storage systems. At the same time, both physical failure and logic error have made it difficult to bring the necessary recovery to bear on remote data disaster, and understanding this proceeding. We describe ARRAY, a system architecture for data disaster recovery that combines reliability, storage space, and security to improve performance for data recovery applications. The paper presents an exhaustive analysis of the design space of ARRAY systems, focusing on the trade-offs between reliability, storage space, security, and performance that ARRAY must make. We present RSRAII (Replication-based Snapshot Redundant Array of Independent Imagefiles) which is a configurable RAIDlike data erasure-coding, and also others benefits come from consolidation both erasure-coding and replication strategies. A novel algorithm is proposed to improve snapshot performance referred to as SMPDP (Snapshot based on Multi-Parallel Degree Pipeline).

关键词： Recovery

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Fuzzy Timed Agent Based Petri Nets for Modeling Cooperative Multi-Robot systems

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International Journal of Communications, Network and system sciences 2009年第9期2卷 827-835页

作者： Xingli HUANG Hua XU Peifa JIA State Key Laboratory on Intelligent Technology and Systems Tsinghua National Laboratory for Information Science and Technology Department of Computer Science and Technology Tsinghua University

A cooperative multi-robot system (CMRS) modeling method called fuzzy timed agent based Petri nets (FTAPN) is proposed in this paper, which has been extended from fuzzy timed object-oriented Petri net (FTOPN). The proposed FTAPN can be used to model and illustrate both the structural and dynamic aspects of CMRS, which is a typical multi-agent system (MAS). At the same time, supervised learning is supported in FTAPN. As a special type of high-level object, agent is introduced into FTAPN, which is used as a common modeling object in its model. The proposed FTAPN can not only be used to model CMRS and represent system aging effect, but also be refined into the object-oriented implementation easily. At the same time, it can also be regarded as a conceptual and practical artificial intelligence (AI) tool for multi-agent systems (MAS) into the mainstream practice of the software development.

关键词： Petri nets Multi Cooperative Robot systems Multi-Agent systems

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A static method for detection of information theft malware

A static method for detection of information theft malware

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2nd International Symposium on Electronic Commerce and security, ISECS 2009

作者： Li, JiaJing Wei, Tao Zou, Wei Mao, Jian Key Laboratory of Network and Software Security Assurance Ministry of Education Peking University Beijing 100871 China Institute of Computer Science and Technology Peking University Beijing 100871 China Department of Electronic and Information Engineering BeiHang University Beijing 10083 China

ISBN: (纸本)9780769536439

Existing techniques based on behavior semantics for information theft malware detection have the main shortcomings of low path coverage and disability of finding hidden malicious behaviors. In this paper we propose a static method for the detection of information theft malware to overcome these shortcomings. It is particularly efficienct for inter-procedure taint analysis, and it is suitable for complicated malware detection, such as Trojan and Bot. Its static style makes it able to find hidden malicious behaviors. We also present an implementation of our method that works on x86 executables and a set of experimental studies validate its good efficiency and effectiveness. © 2009 IEEE.

关键词： Malware

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An efficient gene selection algorithm based on tolerance rough set theory 1

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12th International Conference on Rough Sets, Fuzzy Sets, Data Mining and Granular Computing, RSFDGrC 2009

作者： Jiao, Na Miao, Duoqian Department of Computer Science and Technology Tongji University Shanghai 201804 China Key Laboratory of Embedded System and Service Computing Ministry of Education of China Tongji University Shanghai 201804 China

ISBN: (数字)9783642106460

ISBN: (纸本)3642106455

Gene selection, a key procedure of the discriminant analysis of microarray data, is to select the most informative genes from the whole gene set. Rough set theory is a mathematical tool for further reducing redundancy. One limitation of rough set theory is the lack of effective methods for processing real-valued data. However, most of gene expression data sets are continuous. Discretization methods can result in information loss. This paper investigates an approach combining feature ranking together with feature selection based on tolerance rough set theory. Compared with gene selection algorithm based on rough set theory, the proposed method is more effective for selecting high discriminative genes in cancer classification task. © 2009 Springer-Verlag Berlin Heidelberg.

关键词： Rough set theory

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