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2011 IEEE 3rd International Conference on Communication Software and networks(2011第三届通信软件与网络国际会议 ICCSN2011)

作者： Ping Wei Liqiang Wu Xiaoyuan Yang Bin Hao Key Laboratory of Network & Information Security of APF Engineering College of APF Xi'an 710086 Ch Key Laboratory of Network & Information Security of APF Engineering College of APF Xi'an 710086Chi Key Laboratory of Computer Network & Information Security of the Ministry of Education Xidian Unive Key Laboratory of Network & Information Security of APF Engineering College of APF Xi'an 710086 C

Recently Vadim Lyubashevsky etc. built LWE problem on ring and proposed a public cryptosystem based on RLWE, which, to a certain extent, solved the defect of large public key of this kind, but it didn't offer parameter selections and performance analysis in detail. In this paper an improved scheme is proposed by sharing a ring' polynomial vector that makes public key as small as 1/m of the original scheme in multi-user environments. In additions, we introduce a parameter r to control both the private key space size and decryption errors probability, which greatly enhances the flexibly and practicality. The correctness, security and efficiency are analyzed in detail and choice of parameters is studied, at last concrete parameters are recommended for the new scheme.

关键词： Public Cryptosystem R-LWE Hard problem based on lattice Parameters selection.

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Towards the Development of Personal Cloud Computing for Mobile Thin-Clients

Towards the Development of Personal Cloud Computing for Mobi...

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International Conference on Information Science and Applications (ICISA)

作者： Yuan Tian Biao Song Eui-Nam Huh Department of Computer Engineering Internet Computing and Network Security Laboratory Kyung Hee University South Korea

ISBN: (纸本)9781424492220

The phenomenon of cloud computing has been driven largely these days. Personal Cloud, as the cloud computing for personal usage, has come to the forefront. Compare with traditional operating system, personal cloud shifts individual computing "from being device-centric to information-centric", which create a bridge between operating system-based computing and the more service-oriented approach to IT. Also, the mobile thin-client has brought mobility to cloud computing. In this paper, we provide a reference base for the development of methodologies tailored for personal cloud computing. Besides, we also provide a security architecture for personal cloud based on the security requirement analysis.

关键词： security Cloud computing Privacy Servers Software computer architecture

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L-WMxD: Lexical based Webmail XSS Discoverer

L-WMxD: Lexical based Webmail XSS Discoverer

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IEEE Conference on computer Communications Workshops, INFOCOM Wksps

作者： Zhushou Tang Haojin Zhu Zhenfu Cao Shuai Zhao Department of Computer Science and Engineering Shanghai Jiaotong University China Key Laboratory of Information Network Security Ministry of Public Security China

ISBN: (纸本)9781457702495

XSS (Cross-Site Scripting) is a major security threat for web applications. Due to lack of source code of web application, fuzz technique has become a popular approach to discover XSS in web application except Webmail. This paper proposes a Webmail XSS fuzzer called L-WMxD (Lexical based Webmail XSS Discoverer). L-WMxD , which works on a lexical based mutation engine, is an active defense system to discover XSS before the Webmail application is online for service. The engine is initialized by normal JavaScript code called seed. Then, rules are applied to the sensitive strings in the seed which are picked out through a lexical parser. After that, the mutation engine issues multiple test cases. Newly-generated test cases are used for XSS test. Two prototype tools are realized by us to send the newly-generated test cases to various Webmail servers to discover XSS vulnerability. Experimental results of L-WMxD are quite encouraging. We have run L-WMxD over 26 real-world Webmail applications and found vulnerabilities in 21 Webmail services, including some of the most widely used Yahoo!Mail, Mirapoint Webmail and ORACLE' Collaboration Suite Mail.

关键词： Electronic mail Servers Transforms Encoding HTML Browsers security

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Comparison between NRZ and RZ OOK modulation format in chromatic dispersion compensation in both electrical and optical compensator

Comparison between NRZ and RZ OOK modulation format in chrom...

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IEEE Symposium on Business, engineering and Industrial Applications (ISBEIA)

作者： Majid Moghaddasi Syuhaimi Bin Ab. Rahman Spectrum Technology Research Group-Broadband Computer and Network Security Laboratory Department of Electrical Electronic & system Engineering Faculty of Engineering UKM Bangi Selangor Malaysia

This paper compares the efficiency of on-off Keying (OOK) modulation formats non-return-to-zero (NRZ) and return-to-zero (RZ) in both electrical and optical chromatic dispersion compensation. While In electrical compensator feed forward-decision feedback equalizer (FFE-DFE) method was applied, Dispersion Compensation Fiber (DCF) was chosen to evaluate the effect of modulation format on them. Transmission distance, subsequently are varied in both systems with mentioned compensation systems to evaluate the Bit Error Rate (BER) regarding to mentioned modulation techniques.

关键词： Dispersion Optical signal processing Modulation Optical fibers Optical fiber networks

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Improved deduplication method based on variable-size sliding window

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content Technology and its Applications 2011年第9期5卷 80-87页

作者： Wang, Can Qin, Zhiguang Yang, Lei Nie, Peng School of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu 611731 China Network and Data Security Key Laboratory of Sichuan Province Chengdu 611731 China

To improve the deduplication performance while keep a reasonable metadata cost and time cost at the same time, a state deduplication method based on variable-size sliding window and a universal model of performance-analyzing for the deduplication methods are proposed. According to this method, the data object is divided into non-overlapped mini chunks based on its content firstly, and then a variable-size sliding window, which uses the mini chunks as its basic unit of movement, is used to identify the duplicate data blocks. Further more, different chunking strategies are used on the data changing regions and the non-changing regions respectively. The theoretical analyzing indicates that this method can achieve satisfying deduplication performance even with a relatively larger expected chunk size, because it can reduce the metadata cost effectively and identify smaller duplicate data blocks. The experimental results on real data show that the average compression ratio of the method can be increased 13.02% than SWC, which has the optimal deduplication performance among the current deduplication methods. Moreover, the average time cost of this method is reduced 97.45% than SWC. This method is suitable for the applications of mass data backup in network environment, which have more rigorous requirements on the deduplication performance and the time cost.

关键词： Metadata

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The design and FPGA implementation of FSM-based intellectual property watermark algorithm at behavioral level

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Information Technology Journal 2011年第4期10卷 870-876页

作者： Liang, Wei Sun, Xingming Ruan, Zhiqiang Long, Jing Hunan Provincial Key Laboratory of Network and Information Security Hunan University Changsha 410082 China School of Computer Science and Engineering Hunan University of Science and Technology Xiangtan 411201 China

A Finite State Machine (FSM)-based Intellectual Property (IP) watermark algorithm at behavioral level is presented for the protection of IP reuse techniques in Very Large Scale Integration (VLSI). The proposed algorithm extracts the maximal delay state set through state transformation relations among circuit signals. The watermark is mapped intoadditional delay constraint sequence by constraint generator, and the value in the sequence is added into the maximal delay state set in the circuit for embedding watermark. The algorithm is tested on Virtex XC V600-6bg432 Field-Programmable Gate Array (FPGA), theexperimental results show that the algorithms has lower impact on logical function, ensures better security and lower (resource) overhead in comparison with other methods. © 2011 Asian network for Scientific Information.© 2011 Asian network for Scientific Education.

关键词： Field programmable gate arrays (FPGA)

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Electronic sealed-bid auctions with incoercibility

Electronic sealed-bid auctions with incoercibility

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2011 International Conference on Electric and Electronics, EEIC 2011

作者： Gao, Chongzhi Yao, Zheng-An Xie, Dongqing Wei, Baodian School of Computer Science Guangzhou University Guangzhou 510006 China Key Laboratory of Network Security and Cryptology Fujian Normal University Fuzhou 350007 China College of Mathematic and Computational Science Sun Yat-Sen University GuangZhou 510275 China Department of Electronics and Communication Engineering Sun Yat-Sen University Guangzhou 510006 China

ISBN: (纸本)9783642217463

Electronic sealed-bid auctions are a method to establish the price of goods through the internet while keeping the bids secret during the bidding phase. In this paper, our concern is incoercibility of an auction protocol. This paper gives the first security model of incoercible sealed-bid auctions. By using undeniable signatures and deniable encryptions as building blocks, an efficient sealed-bid auction protocol with in-coercibility is also proposed. Furthermore, our construction is proven to be secure in the random oracle model. © Springer-Verlag Berlin Heidelberg 2011.

关键词： network security

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A robust quantization method using a robust Chinese remainder theorem for secret key generation

A robust quantization method using a robust Chinese remainde...

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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Wenjie Wang Chen Wang Xiang-Gen Xia Ministry of Education Key Laboratory for Intelligent Networks and Network Security Xi'an Jiaotong University China Department of Electrical and Computer Engineering University of Delaware Newark DE USA

Traditional channel quantization based methods for encryption key generation usually suffer from the quantization error which may decrease the key agreement ratio between authorized users. In this paper, we make use of the reciprocity of the wireless channel in time-division duplex (TDD) mode, and adopt a closed-form robust Chinese remainder theorem (CRT) to extract the encryption key from the noisy channel estimations. The channel coefficients are regarded as the remainders in robust CRT, and the key is generated from the quotient output of the robust CRT. In addition, a remainder selection procedure is proposed to further improve its performance. Simulations demonstrate the effectiveness of the proposed method.

关键词： Cryptography Robustness

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Enforcing Reactive Noninterference with Reachability Analysis

Enforcing Reactive Noninterference with Reachability Analysi...

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International Conference on Information Technology: New Generations (ITNG)

作者： Cong Sun Liyong Tang Zhong Chen Institute of Software School of Electronics Engineering and Computer Science Peking University China Key Laboratory of High Confidence Software Technologies Key Laboratory of Network and Software Security Assurance Ministry of Education China

The reactive computational model is pervasively used as a proper abstraction of web-based applications which receive inputs and generate outputs throughout execution. The present static enforcements of information flow security on reactive program are either based on type system or abstract interpretation. In this work we first propose an approach using automated verification to check conformance with information flow policy for reactive program. This approach utilizes our previous idea to incorporate self-composition with reach ability analysis. In order to reduce the state space of model, we propose the Store-Match Self-Composition (SMSC) to avoid duplicating the low channels. The result of preliminary experiments shows that our approach is more precise and efficient than existing work and also more efficient than our previous reach ability analysis.

关键词： security Computational modeling Reachability analysis Motorcycles Semantics Software Data structures

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Runtime-based boot components re-measurement scheme for trusted platform

Runtime-based boot components re-measurement scheme for trus...

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作者： Weiping, Peng Yajian, Zhou Cong, Wang Yixian, Yang Key Laboratory of Network and Information Attack and Defence Technology of MOE Beijing University of Posts and Telecommunications Beijing 100876 China School of Computer Science and Technology Henan Polytechnic University Jiaozuo Henan 454001 China Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China National Engineering Laboratory for Disaster Backup and Recovery Beijing University of Posts and Telecommunications Beijing 100876 China

ISBN: (纸本)9783642251849

Integrity measurement is just one of the most important features in a trusted computing platform to provide evidence of platform configuration and behavior. Each set of software instructions (binary code) is measured and recorded before it is executed. Especially, all of boot components which be recorded in pre-boot stage can't be re-measured until the platform is rebooted. However, the reality is that many components belong to pre-boot stage, such as BIOS, Boot Loader and MBR, are easily modified or updated in runtime environment. If these updated results of components are treated as configuration requirements for a remote server-side to verify the access request, the remote network access connection will fail. It must restart the host to re-measure there components, and the result of the new measure is not guaranteed right absolutely. We solve this problem by embedding Integrity Measurement Agency Component (IMAC) which has the capability of monitoring transformation, verifying credibility, updating Platform Configuration Registers and recording integrity measurement logs in Linux kernel. The result of performance analysis demonstrates that the method is feasible and credible. © 2011 Springer-Verlag Berlin Heidelberg.

关键词： Trusted computing

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