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Index system of Network security and Survivability

Index System of Network Security and Survivability

2011 International conference on Instrumentation,Measurement,computer,Communication and Control (IMCCC2011)(第一届仪器测量、计算机通信与控制国际会议)

作者： Xiaohui Kuang Lufeng Zhang Dongxia Wang Jian Tang Liang Ming Chunlei Wang Science and Technology on Information System Security Laboratory Beijing China Beijing Institute o Beijing Institute of System and Engineering Beijing China Department of Computer Science and Techn

ISBN: (纸本)9781457713675

In order to set up universal criteria for measuring and evaluating network security and survivability,this paper presents a novel index *** index system was built according to the Protection-Detection-Response (PDR) security model and the Resistance-Recognition-Recovery (R3) survivability principle of network in the presence of attacks,failures,or *** all the 24 metrics in the index system are used to cover the characters of network security and *** index system is organized with threelayer structure like a *** first layer,*** node,is called network security and *** second layer includes three indexes,*** metric,awareness metric,and recovery *** third layer includes 20 indexes abstracted from different network layers,survivability characters,and survivability methods and so *** novel index system is quantifiable,universal,consistent,compatible,and fine-scale,which is suitable for different network *** last,a case for how to using these index system to measure network security and survivability is also given.

关键词： network security and survivability index system

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Learning complex image patterns with Scale and Shift Invariant Sparse Coding

Learning complex image patterns with Scale and Shift Invaria...

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IEEE International Conference on Image Processing

作者： Xiaobing Liu Bo Zhang State Key Laboratory of Intelligent Technology and System Tsinghua National Laboratory for Information Science and Technology Department of Computer Science and Technology Tsinghua University Beijing China

The image patches learned by recent works are usually only bar-like or Gabor-like patterns. However those simple patterns are not meaningful enough to capture higher level information. In this study, we try to learn more complex image patterns from unaligned images. We propose Scale And Shift Invariant Sparse Coding (SASISC), which aligns basis patches at proper locations and scales to reconstruct the whole image. The experiment results on unaligned images show that SASISC can explain the images much better than the original sparse coding, and can extract more complex image patterns.

关键词： Image coding Dictionaries Encoding Image reconstruction Prototypes Conferences

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Fault analysis study of the block cipher FOX64

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Multimedia Tools and Applications 2011年第3期63卷 691-708页

作者： Li, Ruilin You, Jianxiong Sun, Bing Li, Chao Department of Mathematics and System Science Science College National University of Defense Technology Changsha China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences Beijing China College of Computer National University of Defense Technology Changsha China

FOX is a family of symmetric block ciphers from MediaCrypt AG that helps to secure digital media, communications, and storage. The high-level structure of FOX is the so-called (extended) Lai–Massey scheme. This paper presents a detailed fault analysis of the block cipher FOX64, the 64-bit version of FOX, based on a differential property of two-round Lai–Massey scheme in a fault model. Previous fault attack on FOX64 shows that each round-key (resp. whole round-keys) could be recovered through 11.45 (resp. 183.20) faults on average. Our proposed fault attack, however, can deduce any round-key (except the first one) through 4.25 faults on average (4 in the best case), and retrieve the whole round-keys through 43.31 faults on average (38 in the best case). This implies that the number of needed faults in the fault attack on FOX64 can be significantly reduced. Furthermore, the technique introduced in this paper can be extended to other series of the block cipher family FOX.

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Assessing network vulnerability under probabilistic region failure model

Assessing network vulnerability under probabilistic region f...

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International Conference on High Performance Switching and Routing

作者： Wang, Xiaoliang Jiang, Xiaohong Pattavina, Achille State Key Laboratory of Novel Software Technology Department of Computer Science and Technology Nanjing University China Future University Hakodate Hokkaido Japan Department of Electronics and Information Politecnico di Milano 20133 Milano Italy

ISBN: (纸本)9781424484560

The mission critical network infrastructures are facing potential large region threats, both intentional (like EMP attack, bomb explosion) and natural (like earthquake, flooding). The available research on region failure related vulnerability studies generally adopt a kind of simple deterministic region failure models, which can not capture some important features of real region failure scenarios, where a network component in the region only fails with certain probability, and more importantly, such failure probability tends to vary with both its dimension and its distance to failure center. In this paper, we provide a more general probabilistic region failure model to capture the key features of a region failure and apply it for the network vulnerability assessment. To facilitate such assessment, we adopt a grid partition-based scheme to estimate various statistical network metrics under a random region failure. A theoretical framework is also established to determine a suitable grid partition such that a specified estimation error requirement is satisfied. The grid partition technique is also useful for identifying the vulnerable zones of a network, which can guide network designers to initiate proper network protection against such failures. The work in this paper helps us more deeply understand the network vulnerability behavior under region failure and facilitates the design and maintenance of future highly survivable mission critical networks. © 2011 IEEE.

关键词： Network security

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ID*Lite: Improved D*Lite algorithm 11

ID*Lite: Improved D*Lite algorithm

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Proceedings of the 2011 ACM Symposium on Applied Computing

作者： Yue, Weiya Franco, John Cao, Weiwei Yue, Hongwei Computer Science Department University of Cincinnati Cincinnati OH 45220 United States State Key Laboratory of Information Security Graduate School of Chinese Academy of Sciences Beijing 100049 China Information College Zhongkai Univ. of Agriculture and Engineering Guangdong Univ. of Technology Guangzhou 510090 China

ISBN: (纸本)9781450301138

Robot navigation has been of great importance especially under unknown or keep-changing environment. In order to solve this kind of problems, many algorithms have been brought up. D*Lite is generally considered as one of the most functional ones. The better performance of D*Lite largely depends on relatively less updating rather than recalculating terrain cost from scratch between robot movements. However, D*Lite still needs updating, i.e. recalculation, every time a terrain change is discovered. In this paper, we give an efficient method to check out when such recalculation can be fully or partially avoided. Experimental results show that it speeds up to 5 times for a variety of benchmarks including a novel and realistic benchmark. Our idea results in an improved version of D*Lite which we call ID*Lite. Moreover, it can be easily embedded into D*Lite variants such as DD*Lite and anytime D*etc. © 2011 ACM.

关键词： Robots

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Construction of General (k, n) Probabilistic Visual Cryptography Scheme

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Journal of Electronic science and technology 2011年第4期9卷 317-324页

作者： Ching-Nung Yang Chih-Cheng Wu Feng Liu with the Department of Computer Science and Information Engineering National Dong Hwa University with State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences.

Visual cryptography scheme （VCS） is a secure method that encrypts a secret image by subdividing it into shadow images. Due to the nature of encryption VCS is categorized into two types： the deterministic VCS （DVCS） and the probabilistie VCS （PVCS）. For the DVCS, we use m （known as the pixel expansion） subpixels to represent a secret pixel. The PVCS uses only one subpixel to represent a secret pixel, while the quality of reconstructed image is degraded. A well-known construction of （k, n）-PVCS is obtained from the （k, n）-DVCS. In this paper, we show another construction of （k, n）-PVCS by extending the （k, k）-PVCS.

关键词： Probabilistic visual cryptography visual cryptography visual secret sharing.

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3DV quality model based depth maps for view synthesis in FTV system

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Journal of Shanghai University(English Edition) 2011年第4期15卷 335-341页

作者：张秋闻安平张艳张兆杨王元庆 Key Laboratory of Advanced Display and System Application (Shanghai University) Ministry of EducationShanghai 200072P.R.China School of Communication and Information Engineering Shanghai University Department of Computer Science and Technology Anhui University of Finance and EconomicsBengbu 230030AuhuiP.R.China Department of Electronics Science and Engineering Nanjing University

Depth maps are used for synthesis virtual view in free-viewpoint television （FTV） systems. When depth maps are derived using existing depth estimation methods, the depth distortions will cause undesirable artifacts in the synthesized views. To solve this problem, a 3D video quality model base depth maps （D-3DV） for virtual view synthesis and depth map coding in the FTV applications is proposed. First, the relationships between distortions in coded depth map and rendered view are derived. Then, a precisely 3DV quality model based depth characteristics is develop for the synthesized virtual views. Finally, based on D-3DV model, a multilateral filtering is applied as a pre-processed filter to reduce rendering artifacts. The experimental results evaluated by objective and subjective methods indicate that the proposed D-3DV model can reduce bit-rate of depth coding and achieve better rendering quality.

关键词： free-viewpoint television （FTV） 3D video quality model base depth maps （D-3DV） view synthesis

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Automatic Generation of Canonical Views for CAD Models

Automatic Generation of Canonical Views for CAD Models

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IEEE International Conference on computer-Aided Design and computer Graphics

作者： Kaimo Hu Bin Wang Bin Yuan Junhai Yong Key Laboratory for Information System Security Ministry of Education Beijing China Department of Computer Science and Technology Tsinghua University Beijing China School of Software Tsinghua University Beijing China Tsinghua National Laboratory for Information Science and Technology Beijing China

Selecting the best views for 3D objects is useful for many applications. However, with the existing methods applied in CAD models, the results neither exhibit the 3D structures of the models fairly nor conform to human's browsing habits. In this paper, we present a robust method to generate the canonical views of CAD models, and the above problem is solved by considering the geometry and visual salient features simultaneously. We first demonstrate that for a CAD model, the three coordinate axes can be approximately determined by the scaled normals of its faces, such that the pose can be robustly normalized. A graph-based algorithm is also designed to accelerate the searching process. Then, a convex hull based method is applied to infer the upright orientation. Finally, four isometric views are selected as candidates, and the one whose depth image owns the most visual features is selected. Experiments on the Engineering Shape Benchmark (ESB) show that the views generated by our method are pleasant, informative and representative. We also apply our method in the calculation of model rectilinearity, and the results demonstrate its high performance.

关键词： Solid modeling Design automation Mathematical model Visualization Three dimensional displays Equations Computational modeling

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An Optimal Color Mapping Strategy Based on Energy Minimization for Time-Varying Data

An Optimal Color Mapping Strategy Based on Energy Minimizati...

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IEEE International Conference on computer-Aided Design and computer Graphics

作者： Yi Peng Jie Dong Li Chen Haiyang Chu Junhai Yong Key Laboratory for Information System Security Ministry of Education Beijing China Department of Computer Science and Technology Tsinghua University Beijing China Tsinghua National Laboratory for Information Science and Technology Beijing China School of Software Tsinghua University Beijing China

Color mapping plays a critical role in visualization of time-varying data and also sets a challenge for researchers due to the consistency of mapping and great changes in time-varying data. In order to solve this problem and generate feature-prominent animation, we present a two phase optimization technique using bilateral filtering and global energy functions. In the first phase, for each time step, we use a weighted mapping function which combines linear mapping and feature histogram. In the second phase, an optimization function taking global color mapping and minimum color difference into consideration is designed. So users can clearly distinguish between data in variable time steps and easily understand the corresponding relationships between different structures. The experiments' results show that our method can achieve high quality visualization for both static and time-varying data.

关键词： Image color analysis Data visualization Optimization Correlation Minimization Transfer functions Histograms

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A Real-Time Face Recognition system Based on BDPCA Plus BDDLDA

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Procedia Environmental sciences 2011年 11卷 139-146页

作者： Jing Li Zehong Yang Yixu Song Quan Yang Fangwen Zhai State Key Laboratory of Intelligent Technology and Systems Tsinghua National Laboratory for Information Science and Technology Department of Computer Science and Technology Tsinghua University Beijing 100084 China

Holistic-based methods, especially principal component analysis(PCA) and linear discriminant analysis(LDA), are very popularly used in face recognition. In last several years, the direct LDA(D-LDA) method was suggested to overcome the so-call “small simple size” problem. Besides, the researchers suggest bidirectional PCA(BDPCA) method, which may be more real-time and effective than PCA, and proposed BDPCA plus LDA (BDPCA+LDA). In the same way, we suggest bidirectional D-LDA(BDDLDA) should be faster than D-LDA, and proposed BDPCA plus BDDLDA (BDPCA+BDDLDA). In this paper, we present a real-time face recognition system for operating system authentication based on BDPCA+BDDLDA. A face database, which was collected with a CCD camera on the laptop, is used to evaluate this system. Experimental results show that this practical system is real-time and effective.

关键词： Face Recognition Bidirectional Principal Component Analysis (BDPCA) Bidirectional Direct Linear Discriminant Analysis (BDDLDA)

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