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2012 International Conference on Innovations in information Technology, IIT 2012

作者： Zeng, Juanli Wang, Yi Xu, Cheng Li, Renfa Embedded System and Network Laboratory Hunan University Changsha Hunan 410082 China Hunan Province Key Laboratory of Network and Information Security Hunan University Changsha Hunan 410082 China College of Information Science and Engineering Hunan University Changsha Hunan 410082 China Department of Electrical and Computer Engineering National University of Singapore Singapore 117576 Singapore

ISBN: (纸本)9781467311014

Masking in gate level could efficiently protect AES S-box out of power analysis attack. But there still exists a kind of attack, called glitch attack, to achieve the sensitive information from gate cell leakage. Some works had been done to resist against glitch attack, which carefully masked AND gate or used Wave Dynamic Differential Logic (WDDL) cell. In this paper, we propose an improved masked AND gate, in which the relationship between input masked values and masks is nonlinear. Usually, when converting S-box operations from GF(2 8) to GF(((22)2)2), all the necessary computations become XOR and AND operations. Therefore, to fully mask AES S-box is to substitute the unmasked XOR and AND operations with the proposed masked AND gate and protected XOR gate. Although the proposed masked AND gate take up one extra XOR gate than Trichina's design and Baek's design, it can resist against glitch attack without using specific gate cell, such as WDDL. © 2012 IEEE.

关键词： Field programmable gate arrays (FPGA)

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A unified architecture for DPA-resistant PRESENT

A unified architecture for DPA-resistant PRESENT

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2012 International Conference on Innovations in information Technology, IIT 2012

作者： Zhao, Wei Wang, Yi Li, Renfa Embedded System and Network Laboratory Hunan University Changsha Hunan 410082 China Hunan Province Key Laboratory of Network and Information Security Hunan University Changsha Hunan 410082 China College of Information Science and Engineering Hunan University Changsha Hunan 410082 China Department of Electrical and Computer Engineering National University of Singapore Singapore 117576 Singapore

ISBN: (纸本)9781467311014

Recently, there is a new kinds of cryptographic algorithms are proposed to meet the requirements of "lightweight" applications. PRESENT is one of them, which is built based on 4-bit substitution transformation (S-box) and suitable for low cost hardware implementations. Usually, there needs two 4-bit S-boxes, Sp, ISp, for PRESENT encryption and decryption, in which ISp can be computed from Sp. Therefore, we proposed a unified architecture to supporting the operations of PRESENT encryption and decryption. There also exists a kind of power analysis attacks pose a serious threat on hardware based PRESENT. In order to resist against DPA, we proposed a new masking scheme for PRESENT, in which the nonlinear substitution needs to be carefully masked. In order to reduce the hardware resources for the proposed masking scheme, we reuse the masked Sp to generate masked ISp. The experimental results show that our proposed unified masked PRESENT takes up only one time larger than the unmasked existing design. But, it is obvious that our proposed design has the ability to defend against DPA. © 2012 IEEE.

关键词： computer architecture

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The method for constructing block sparse measurement matrix based on orthogonal vectors

The method for constructing block sparse measurement matrix ...

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13th Pacific-Rim Conference on Multimedia, PCM 2012

作者： Zhao, Ruizhen Qin, Zhou Tang, Jinhui Institute of Information Science Beijing Jiaotong University Beijing 100044 China Key Laboratory of Advanced Information Science and Network Technology of Beijing Beijing 100044 China School of Computer Science Nanjing University of Science and Technology Nanjing 210094 China

ISBN: (纸本)9783642347771

Compressive sensing is a new way of information processing which recover the original signal through acquiring much fewer measurements with a measurement matrix. The measurement matrix has an important effect in signal sampling and reconstruction algorithm. However, there are two main problems in currently existing matrices: the difficulty of hardware implementation and high computation complexity. In this paper, we proposed a class of highly sparse and deterministic scrambled block measurement matrices based on orthogonal vectors (SBOV). It could improve sensing efficiency and reduce computation complexity. Those matrices constructed by the proposed method only need very little memory space and they could be easily implemented in hardware due to their simple entries. Some experiments show the better imaging performance comparable to scrambled block Hadamard matrix (SBH) and dense partial Hadamard matrix. SBOV matrices are simpler and sparser than SBH matrix. © 2012 Springer-Verlag.

关键词： Compressed sensing

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Application of SS-MVPN technology in mobile network

Application of SS-MVPN technology in mobile network

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2012 International Conference on Electrical Insulating Materials and Electrical Engineering, EIMEE 2012

作者： Hang, Qiangwei Chen, Bing Hou, Qiang Key Laboratory of Information Network Security Ministry of Public Securitythe 3rd research institute of ministry of public security Shanghai China Dept. of computer engineering of Tongji University Shanghai China

ISBN: (纸本)9783037854518

More and more people are using mobile equipments to access business resources from the organization's internal network, how to ensure the data security in the data transport process of mobile intelligent terminals is becoming an urgent need to address issues. This paper proposes a new solution of mobile VPN which using the SSL to protect the data flow and SOCKS5 proxy technology to redirect flow, and gives the analysis of its performance improvement principles. © (2012) Trans Tech Publications, Switzerland.

关键词： Wireless networks

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Semantic access control for cloud computing based on e-Healthcare

Semantic access control for cloud computing based on e-Healt...

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International Conference on computer Supported Cooperative Work in Design

作者： Lili Sun Hua Wang Jianming Yong Guoxin Wu Centre for Systems Biology University of Southern Queensland Toowoomba Australia School of Information Systems University of Southern Queensland Toowoomba Australia School of Computer Science and Engineering & Key Laboratory for Computer Network and Information Integration Southeast Univeristy

With the increased development of cloud computing, access control policies have become an important issue in the security filed of cloud computing. Semantic web is the extension of current Web which aims at automation, integration and reuse of data among different web applications such as clouding computing. However, Semantic web applications pose some new requirements for security mechanisms especially in the access control models. In this paper, we analyse existing access control methods and present a semantic based access control model which considers semantic relations among different entities in cloud computing environment. We have enriched the research for semantic web technology with role-based access control that is able to be applied in the field of medical information system or e-Healthcare system. This work demonstrates how the semantic web technology provides efficient solutions for the management of complex and distributed data in heterogeneous systems, and it can be used in the medical information systems as well.

关键词： Computational modeling Educational institutions Clouds Security Medical services Australia Temperature control

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BAsplice: Bi-direction alignment for detecting splice junctions

BAsplice: Bi-direction alignment for detecting splice juncti...

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2012 IEEE 6th International Conference on Systems Biology, ISB 2012

作者： Bu, Jingde Wu, Jiayan Chen, Meili Xiao, Jingfa Yu, Jun Chi, Xuebin Jin, Zhong Supercomputing Center Computer Network Information Center Chinese Academy of Sciences Beijing China CAS Key Laboratory of Genome Sciences and Information Beijing Institute of Genomics Chinese Academy of Sciences Beijing China Graduate University Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781467343985

RNA-Seq is a revolutionary whole transcriptome shotgun sequencing technology performed by high-throughput sequencers, which provide more comprehensive information on differential expression of genes and benefit on novel splice variants identification. RNA-Seq reads is so short that it's a great challenge on mapping reads back to the reference effectively, especially when they span two or more exons. To improve the mapping efficiency, we introduce here a bi-direction alignment tool - BAsplice, which use RNA-Seq data to detect splice junctions without any additional information. Compare with another splice junction mapping software, SOAPsplice, BAsplice performs better in call rate and running time, but a little worse in accuracy. BAsplice is a free open-source software written in C language. It is available at https://***/vlcc/basplice. © 2012 IEEE.

关键词： RNA

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Deadline partitioning for periodic messages transmission over Switched Ethernet with non-preemptive EDF

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Journal of Computational information Systems 2012年第17期8卷 7171-7180页

作者： Tan, Ming Wei, Zhen Hefei University Key Laboratory of Network and Intelligent Information Processing Hefei China Hefei University of Technology School of Computer and Information Hefei China

When applying Switched Ethernet in real-time communications, the switch and the end-nodes schedule the real-time messages using Earliest Deadline First (EDF) algorithm. The problem we are facing is how to divide deadlines of real-time messages between the transmission link (from source-node to switch) and the reception link (from switch to destination-node), which is referred to as the problem of deadline partitioning. In this paper, an improved feasibility check method for periodic real-time messages scheduled under non-preemptive EDF was presented. In addition, the feasibility analysis of real-time periodic messages when Instances of messages are early released was given and proved by using real-time scheduling theory. Particularly, we proposed an algorithm for calculating the minimum non-preemptive EDF-feasible deadline of real-time messages. Moreover, a novel deadline partitioning scheme called MDPS (Deadline Partitioning Scheme based Deadline Minimization) was developed. By computing the minimum non-preemptive EDF-feasible deadlines and balancing the slack deadline of real-time messages on the transmission link and the reception link, MDPS can optimize deadline partitioning of real-time messages. The simulation results show that the MDPS performs better than the currently used deadline partitioning scheme referred to as ADPS in terms of using the aggregated switch throughput and the message missing ratio. © 2012 Binary information Press.

关键词： Scheduling algorithms

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Localization in 3D Sensor networks Using Stochastic Particle Swarm Optimization

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Wuhan University Journal of Natural Sciences 2012年第6期17卷 544-548页

作者： ZHANG Zhangxue CUI Huanqing Fujian Institute of Scientific and Technology Information Fuzhou 350003FujianChina Fujian Strait Information Technology Co.Ltd.Fuzhou 350003 FujianChina Shandong Computer Science Center Shandong Provincial Key Laboratory of Computer NetworkJinan 250014ShandongChina College of Information Science and Engineering Shandong University of Science and TechnologyQingdao 266590ShandongChina

Localization is one of the key technologies in wireless sensor networks,and the existing PSO-based localization methods are based on standard PSO,which cannot guarantee the global *** the sensor network deployed in a three-dimensional region,this paper proposes a localization method using stochastic particle swarm *** measuring the distances between sensor nodes,the sensor nodes estimate their locations using stochastic particle swarm optimization,which guarantees the global convergence of the *** simulation results show that the localization error of the proposed method is almost 40% of that of multilateration,and it uses about 120 iterations to reach the optimizing value,which is 80 less than the standard particle swarm optimization.

关键词： wireless sensor network localization stochasticparticle swarm optimization

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Filter-Based information Selection Mechanism in Publish/Subscribe Middleware

Filter-Based Information Selection Mechanism in Publish/Subs...

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2012 3rd International Conference on information Technology for Manufacturing Systems(ITMS 2012)

作者： Jigang Xiao Yunqing Chen Zhuowei Shen Systems Engineering Research Institute China State Shipbuilding Corporation Key Lab of Computer Network and Information Integration MOE School of Computer Science and Engineering Southeast University

Publish/Subscribe middleware is getting more and more attentions for its feature of loose *** some scenarios,Subscribersof a topic need not all the information belonging to that topic, but only those of interest. To fulfill this requirement,some kind of information selection mechanism is needed. In this paper, a filter-based information selection mechanism is proposed, which is compliant with OMG DDS specification. Then it is implemented in a publish/subscribe middleware prototype *** the mechanism, a publish/subscribe middleware can use the compiler generated by Flex&Bison to compile the filtering rules of the users,which are conform to SQL-like syntax,and generate the filtering syntax *** the subscriber side, when receiving a sample, the middleware substitute the values of the sample into the corresponding positions in the filtering syntax tree. By traversing the tree, the middleware makes the filtering decision. Experiment results reveal that the proposed mechanism is effective.

关键词： information Filtering Publish/Subscribe middleware Data Distribution Service Filter

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FACIAL EXPRESSION RECOGNITION VIA GABOR WAVELET AND STRUCTURED SPARSE REPRESENTATION

FACIAL EXPRESSION RECOGNITION VIA GABOR WAVELET AND STRUCTUR...

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The 3rd IEEE International Conference on network Infrastructure and Digital Content (2012年第三届IEEE网络基础设施与数字内容国际会议(IEEE IC-NIDC2012))

作者： Ting Chen Fei Su School of Computer Science School of Information and Communication Engineering Beijing Key Laboratory of Network System and Net

Automatically facial expression recognition (FER) has become more and more important today,making machine understand human's emotion by expression having various potential applications,especially in the field of human machine interaction (HCI).But FER still remains a challenge problem in computer vision as the subtleness of facial expression is difficult to capture and the robustness of the recognition in various situation is also hard to *** this paper,a Gabor wavelet and structured sparse representation based classification (SSRC) are proposed aiming to solve the FER *** Gabor wavelet filter is used to extract the subtle facial expression,and the structured sparse representation based classification (SSRC) is used for classifying the test images *** sparse representation based classification (SRC),the SSRC explicitly takes structure of the dictionary into account for a better *** results show the better performance of our proposed method compared with other traditional methods,especially more robust in case of facing corruption or occlusion.

关键词： Facial expression recognition Gabor wavelet Structured sparse representation

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