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Transparent Encrypting Office Document Based on Plug-in Software

Procedia Engineering 2011年 23卷 260-264页

作者： Zhou Zhen-liu Tian Ling Li Zhuo-ling Shenyang Key Laboratory of Information Security for Power System Institute of Engineering Shenyang 110136 China Department of network and electronic engineering Information Engineering School Shenyang 110000 China

More and more file encrypting about office document are required in personal application environment. Limitations about encrypting file system, virtual disk encryption and filtrating driver encryption, are analyzed in this paper, then a kind of encryption system for office document, combing with plug-in software and smart u-key, is put forward and implemented. File's encrypting procedure in this system is transparent, self-determination and visible, and the whole system is convenient to migrate. Mow word and excel files can be encrypted using this system.

关键词： plug-in software office document file encryption smart u-key

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Research on Auto-generation of Operation Order for Distribution network

Research on Auto-generation of Operation Order for Distribut...

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The Second International Conference on High Performance networking, computing,and Communication Systems（ICHCC 2011）

作者： Yanwei Zheng Qingdong Meng Xuejun Lv Zhiquan Feng School of Information Science and Engineering University of Jinan Shandong Provincial Key Laboratory of Network based Intelligent Computing University of Jinan Department of Production Technology Yanggu Power Supply Corporation Department of City Power Supply Linyi Power Supply Corporation

To meet the requirements of operation orders auto-generation, a topology information data structure is designedAbove this, several algorithms are proposed, which support to generate operation orders for the tasks of cell maintenance, cell transmission, full circuitry maintenance, range of circuitry maintenance, and switch load algorithmsThese algorithms can use in the distribution networkThe auto-generation only accords the topology information that distilled from the graphicIt is easily use for the maintain personnel.

关键词： Auto-generation,Operation order,Distribution network,topology information

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Strong security Enabled Certificateless Aggregate Signatures Applicable to Mobile Computation

Strong Security Enabled Certificateless Aggregate Signatures...

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International Conference on Intelligent networking and Collaborative Systems (INCOS)

作者： Hu Xiong Qianhong Wu Zhong Chen Key Laboratory of Network and Software Security Assurance of the Ministry of Education Institute of Software School of Electronics Engineering and Computer Science Peking University Beijing China Department of Computer Engineering and Mathematics UNESCO Chair in Data Pr Universitat Rovira i Virgili Tarragona Spain Key Laboratory of AeroSpace Information Security and Trusted Computing Ministry of Education School of Computer Wuhan University of China China

An aggregate signature scheme allows a public algorithm to aggregate n signatures of n distinct messages from n signers into a single signature. By validating the single resulting signature, one can be convinced that the messages have been endorsed by all the signers. Certificateless aggregate signatures allow the signers to authenticate messages without suffering from the complex certificate management in the traditional public key cryptography or the key escrow problem in identity-based cryptography. In this paper, we present a new efficient certificate less aggregate signature scheme. Compared with up-to-date certificate less aggregate signatures, our scheme is equipped with a number of attracting features: (1) it is shown to be secure under the standard computational Diffie-Hellman assumption in the random oracle model, (2) the security is proven in the strongest security model so far, (3) the signers do not need to be synchronized, and (4) its performance is comparable to the most efficient up-to-date schemes. These features are desirable in a mobile networking and computing environment where the storage/computation capacity of the end devices are limited, and due to the wireless connection and distributed feature, the computing devices are easy to be attacked and hard to be synchronized.

关键词： Aggregates Games Generators Synchronization Public key cryptography

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Attribute-Based Signature with Policy-and-Endorsement Mechanism

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Journal of Computer Science & Technology 2010年第6期25卷 1293-1304页

作者：王怀习朱岩冯荣权 Stephen S.Yau LMAM School of Mathematical SciencesPeking University Electronic Engineering Institute Institute of Computer Science and Technology Peking University Key Laboratory of Network and Software Security Assurance (Peking University) Ministry of Education Information Assurance Center and School of Computing Informatics and Decision Systems Engineering Arizona State University

In this paper a new signature scheme,called Policy-Endorsing Attribute-Based Signature,is developed to correspond with the existing Ciphertext-Policy Attribute-Based *** signature provides a policy-and-endorsement *** this mechanism a single user,whose attributes satisfy the predicate,endorses the *** signature allows the signer to announce his endorsement using an access policy without having to reveal the identity of the *** security of this signature,selfless anonymity and existential unforgeability,is based on the Strong Diffie-Hellman assumption and the Decision Linear assumption in bilinear map groups.

关键词： cryptography fine-grained access control attribute-based signature policy-and-endorsement selfless anonymity existential unforgeability

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Threshold signature scheme based on non-interactive Diffie-Hellman signature

Threshold signature scheme based on non-interactive Diffie-H...

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1st International Conference on networking and Distributed computing, ICNDC 2010

作者： Wang, Xiuqun Huang, Lican Key Laboratory for Information System Security Ministry of Education Tsinghua University and Beijing Certification Authority Beijing China Institute of Network and Distributed Computing Zhejiang Sci-Tech University Hangzhou China

ISBN: (纸本)9780769542072

We present a threshold signature based on non-interactive Diffie-Hellman signature. It works in asynchronous communication system and can tolerate Byzantine faults with optimal resiliencen ≥ 3t + 1, where n is the number of the participants and t is the number of the fault participants. The security of this scheme bases on discrete logarithm intractability assumption. We give the security analysis of our proposed threshold signature scheme. © 2010 IEEE.

关键词： Authentication

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information system security function validating using model checking

Information system security function validating using model ...

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2010 2nd International Conference on Computer Engineering and Technology, ICCET 2010

作者： Ma, Jianli Xu, Guoai Yang, Yixian Ji, Yong Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China Key Laboratory of Network and Information Attack Defense Technology of MOE Beijing University of Posts and Telecommunications Beijing China China Electronics System Engineering Computing station Beijing China

ISBN: (纸本)9781424463503

information systems will be encountered more and more security threats due to the development of computer attack method and technology. Generally, different security policies are used to protect the sensitive information in these systems. There has been a lot of study on security policy conformance and completeness verification and validation. However, there have few researches to validate whether the system behaviors satisfy the security policies. A model checking based information system security function validation method is proposed to validate the conformance between the system security solutions and the security policies in this paper. The system behaviors and the security policies are modeled separately, and the consistency between them is validated using the model checker SPIN. © 2010 IEEE.

关键词： Model checking

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Enhancing fairness: A novel C2C e-commerce community member reputation algorithm based on transaction social networks

Enhancing fairness: A novel C2C e-commerce community member ...

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IADIS International Conference WWW/Internet 2010

作者： Feng, Wangsen Zhang, Bei Xia, Yunni Li, Jiajing Meng, Tao Key Laboratory of Network and Software Security Assurance of Ministry of Education Computing Center Peking University Beijing 100871 China College of Computer Science Chongqing University Chongqing 400044 China School of Mechanical Electronic and Information Engineering China University of Mining and Technology Beijing 100083 China Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China

ISBN: (纸本)9789728939250

Today, almost all the C2C e-commerce community member reputation evaluating algorithms are time sensitive. The reputation of a community member is accumulated after transactions and the increment of reputation after a successful transaction is computed based on the score given by his or her transaction partner. Since people always tend to do business with those with high reputation value, the reputation of members joined in C2C community at different time will vary greatly although they may provide the same commodity quality and service. It is unfair to new comers. In this paper, we propose a novel algorithm to overcome the shortcoming. Based on the transaction social network, our algorithm employs the random walk strategy to compute member reputation and enhance system fairness. © 2010 IADIS.

关键词： Electronic commerce

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Enhance information Flow Tracking with Function Recognition

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China Communications 2010年第6期7卷 24-29页

作者： Zhou Kan Huang Shiqiu Huang Shan Qi Zhengwei Gu Jian Guan Haibing School of software Shanghai Jliao Tong University Shanghai 200240 P. R. China Key Lab of Information Network Security Ministry of Public Security Department of Computer Science ＆ Engineering Shanghai Jiao Tong University Shanghai 200240 P. R China Shanghai Key Laboratory of Scalable Computing ＆ System Shanghai P. R. China

With the spread use of the computers, a new crime space and method are presented for criminals. Thus computer evidence plays a key part in criminal cases. Traditional computer evidence searches require that the computer specialists know what is stored in the given computer. Binary-based information flow tracking which concerns the changes of control flow is an effective way to analyze the behavior of a program. The existing systems ignore the modifications of the data flow, which may be also a malicious behavior. Thus the function recognition is introduced to improve the information flow tracking. Function recognition is a helpful technique recognizing the function body from the software binary to analyze the binary code. And that no false positive and no false negative in our experiments strongly proves that our approach is effective.

关键词： function recognition information flow tracking program behavior e-evidence.

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Threshold Signature Scheme Based on Non-internative Diffie-Hellman Signature

Threshold Signature Scheme Based on Non-internative Diffie-H...

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International Conference on networking and Distributed computing (ICNDC)

作者： Xiuqun Wang Lican Huang Key Laboratory of Information System Security Ministry of Education Tsinghua University Beijing China Institute of Network and Distributed Computing Zhejiang Science and Technology University Hangzhou China

We present a threshold signature based on non-internative Diffie-Hellman signature. It works in asynchronous communication system and can tolerate Byzantine faults with optimal resilience n ≥ = 3t + 1, where n is the number of the participants and t is the number of the fault participants. The security of this scheme bases on discrete logarithm intractability assumption. We give the security analysis of our proposed threshold signature scheme.

关键词： Polynomials Protocols Public key Interpolation Robustness

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SkyF2F: Censorship Resistant via Skype Overlay network

SkyF2F: Censorship Resistant via Skype Overlay Network

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WASE International Conference on information Engineering, ICIE

作者： Shoufeng Cao Longtao He Zhongxian Li Yixian Yang Information Security Center State Key Laboratory of Networking and Switching Technology Key Laboratory of network and information attack & defence technology of MOE Beijing University of Posts and Telecommunications China Research Center of Information Security Institute of Computing Technology Chinese Academy and Sciences Beijing China

Internet censorship is on the rise as an increasing number of countries and companies block or monitor access to parts of the Internet. Many censorship resistant systems have been proposed, which rely on deploying many access points to the censored domain. Therefore they face the problem of discovering available nodes and deploying a large number of nodes. Opposite to many access point approach, we present a system building on existing overlay network, a low-cost solution for circumventing Internet, called SkyF2F. SkyF2F is a plug-in for Skype client that allows users to establish a covert communication tunnel across Skype overlay network. We describe the design, a prototype implementation and security analysis of SkyF2F. Our security analysis shows that SkyF2F can successfully circumvent several sophisticated censoring techniques.

关键词： information security Internet Computer security National security Laboratories Cryptography Buildings Prototypes Monitoring IP networks

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