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Workshop on Fault Diagnosis and Tolerance in Cryptography (FDTC)

作者： Ruilin Li Chao Li Chunye Gong 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 and Sciences Beijing China School of Computer National University of Defense Technology Changsha China

ISBN: (纸本)9781424449729;9780769538242

SHACAL-1, known as one of the finalists of the NESSIE project, originates from the compression component of the widely used hash function SHA-1. The requirements of confusion and diffusion are implemented through mixing operations and rotations other than substitution and permutation, thus there exists little literature on its immunity against fault attacks. In this paper, we apply differential fault analysis on SHACAL-1 in a synthetic approach. We introduce the random word fault model, present some theoretical arguments, and give an efficient fault attack based on the characteristic of the cipher. Both theoretical predications and experimental results demonstrate that, 72 random faults are needed to obtain 512 bits key with successful probability more than 60%, while 120 random faults are enough to obtain 512 bits key with successful probability more than 99%.

关键词： Doped fiber amplifiers Public key cryptography Fault diagnosis information analysis Chaos Mathematics Educational institutions Laboratories information security Public key

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An Ultra-kernel Model for Dedicated security systems

An Ultra-kernel Model for Dedicated Security Systems

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International Conference on Education technology and computer, ICETC

作者： Jing Wang Luning Xia Jiwu Jing Department of Electronic Engineering and information Science University of Science and Technology Hefei China State Key Laboratory of information Security Chinese Academy and Sciences Beijing China

security, simplicity, efficiency, are three important aspects of system architecture design, especially for dedicated security systems. The legacy horizontal-layered architectures (e.g., microkernel model) suffer from lacking of many desired features, such as flexibility, security and deployability. In this paper, we propose a new kernel model with vertical architecture, called ultra-kernel model, to make kernel smaller and provide application programmers with direct hardware access. We show that this model has visible advantages over the microkernel architecture, among them, fault-code tolerance and application isolation. To test and evaluate our proposed model, we have implemented a prototype firewall system based on our ultra-kernel design in a developing environment. The ultra-kernel with message exchange contains only 870 lines of C/C++ source code. Measurements show that the performances of the prototype firewall is significantly improved, comparing with an optimized Linux system on the same hardware platform.

关键词： Kernel Hardware information security computer architecture Prototypes Educational technology Control systems Guidelines Communication system security computer science education

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Task Scheduling for Heterogeneous Computing Based on Learning Classifier system

Task Scheduling for Heterogeneous Computing Based on Learnin...

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International Conference on Artificial Intelligence and Computational Intelligence (AICI)

作者： Jiadong Yang Hua Xu Peifa Jia State Key Laboratory Intelligent Technology and Systems Tsinghua National Laboratory of Information Science and Technology Department of Computer Science and Technology Tsinghua University Beijing China

Task scheduling still remains one of the most challenging problems to achieve high performance in heterogeneous computing environments in spite of numerous efforts. This paper presents a novel scheduling algorithm based on learning classifier system for heterogeneous computing environment. In the presented algorithm, XCS classifier system is used to find the optimal task assignment on different processors, and the execution sequence of tasks on the same processor is set by the heuristic used in list scheduling approach. Empirical studies on benchmark task graphs show that the proposed algorithm is able to produce higher speedup compared with the related algorithms. Further experiments also indicate that the proposed algorithm maintains almost the same performance with different parameter settings.

关键词： Processor scheduling Scheduling algorithm High performance computing Learning Clustering algorithms Artificial intelligence Computational intelligence Intelligent systems Computational and artificial intelligence Competitive intelligence

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Vehicle detection and tracking in relatively crowded conditions

Vehicle detection and tracking in relatively crowded conditi...

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IEEE International Conference on systems, Man and Cybernetics

作者： Wenhao Lu Shengjin Wang Xioaqing Ding Department of Electronic Engineering State Key Laboratory of Intelligent Technology and System Tsinghua National Laboratory for Information Science and Technology Tsinghua University Beijing China

Aiming at vehicle detection and tracking problems in video monitoring and controlling system, this paper mainly studies vehicle detection and tracking problems in conditions of high traffic density in daytime. This paper is distinguished by two key contributions. First, we develop an improvement - SEAP (Simple but Efficient After Process) which checks the detection results in an accurate way and is an after process of Adaboost detector which used to detect car in every frame. Second, we propose a tracking algorithm named 4-states tracking algorithm based on Kalman linear filter. Tracking results turn unsteady as traffic density grows higher because of much more false positives and false negatives appear. However, 4-states tracking algorithm can solve this problem in an easy way by introducing FSM (Finite State Machine) into tracking algorithm. Finally, we implement a real-time vehicle detection and tracking system with the upper methods. Experiments give good results in relative crowded Conditions.

关键词： Vehicle detection Detectors computer vision Change detection algorithms Road vehicles Laboratories Intelligent vehicles Layout Statistical learning Face detection

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An efficient certificateless signature from pairings

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International Journal of Network security 2009年第1期8卷 96-100页

作者： Wang, Changji Long, Dongyang Tang, Yong Department of Computer Science Sun Yat-sen University Guangzhou China not available Xingang West Road 135 Guangzhou 510275 China Guangdong Province Information Security Key Laboratory Guangzhou China The State Key Laboratory of Information Security Graduate School of Chinese Academy of Sciences Beijing China

A certificateless signature retains the efficiency of Shamir's identity-based signature while it does not suffer from the inherent private key escrow problem, which is first introduced by S. Al-Riyami and K. Paterson in Asiacrypt 2003. In this paper, we proposed a new certificateless signature scheme based on bilinear pairings. The proposed scheme is more efficient than those of previous schemes by pre-computing the pairing e(P, P) = g and publishing as the system parameters, it needs not to compute the pairing in the Sign stage, and only needs to compute three pairings in the Verify stage. In addition, the proposed scheme does not need the special MaptoPoint hash function and the confidential channel between KGC and users. The proposed scheme is unforgeable under the hardness assumption of the q-strong Diffie-Hellman problem and Computational Diffie-Hellman problem.

关键词： Hash functions

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Generalization of Some Attacks on RSA with Small Prime Combination and Small Private Exponent

Generalization of Some Attacks on RSA with Small Prime Combi...

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Asia-Pacific Conference on information Processing, APCIP

作者： Lidong Han Guangwu Xu Key Laboratory of Cryptographic Technology and Information Security Ministry of Education Shandong University Jinan China Department of Electrical Engineering and Computer Science University of Wisconsin Milwaukee Milwaukee USA

In 2002, de Weger proposed an attack on small RSA secret decryption exponent with small prime difference |p-q|, which improved the insecure private key bound of Wiener and Boneh-Durfee attacks. Recently, Maitra and Sarkar found new weak keys in another case when 2q-p is small. In this paper, several results on attacking RSA with small prime differences q-p, 2p-q and small private exponent are generalized. Our observation is that when |ip-jq| is small for some integers i,j, we can explore new insecure keys in RSA. One of our results also makes some statement in literature more accurate.

关键词： Public key cryptography Public key information processing Educational technology computer science education security Error correction Smart cards

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Development of a visual navigation system for 3D virtual mine

Development of a visual navigation system for 3D virtual min...

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2009 International Conference on information Engineering and computer science, ICIECS 2009

作者： Dewen, Seng Xi, Liang Hongxia, Wang Guoying, Yue Department of Computer and Information Engineering Zhejiang Water Conservancy and Hydropower College Hangzhou 310018 China State Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education University of Science and Technology Beijing Beijing 100083 China

ISBN: (纸本)9781424449941

Our research is to develop a system of effectively visualizing large scale geographically related data sets and demonstrate to the industry the advantages of integrating topographic, geological, geophysical and mine planning data through three dimensional (3D) interactive computer visual simulation. Easy-to-use methods that permit users to navigate through a scale-true visualization and interact with it are implemented. The visual system developed by the authors is to investigate mining environment by analyzing large quantities of geographical data. Analyzing correlations between ore body and the mine planning can be done well by placing graphical representations of the data directly into virtual 3D representations of the mining environment. Navigation in time is used to provide assistance for data selection and to enhance the flexibility of the visualization. Real data derived from an iron mine in Wuhan City of China demonstrates the effectiveness and efficiency of the system. A case study with the results and benefits achieved by using real 3D representations and navigations of the system is given. ©2009 IEEE.

关键词： Visualization

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Load Balancing Routing Algorithm for Ad Hoc Networks

Load Balancing Routing Algorithm for Ad Hoc Networks

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International Conference on Mobile Ad-hoc and Sensor Networks, MSN

作者： Wenbin Jiang Zhaojing Li Chunqiang Zeng Hai Jin Services Computing Technology and System Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China Department of Electronics and Information Engineering Huazhong University of Science and Technology Wuhan China

In ad hoc networks, when the load is heavy, the performance of on-demand routing protocols, such as DSR protocol, will suffer large degradation. For instance, the absence of balanced distribution of network flow among nodes in the whole network is highly prone to producing heavy-load key nodes. This results in fast energy consumption of these key nodes, and finally decreasing the survival time of the network caused by their premature failures. To address this problem, a novel algorithm called cross-layer based load balancing algorithm for DSR (CLB-DSR) is proposed. In CLB-DSR, the cross-layer strategy is adopted to exchange the information between data link layer and network layer. Simulation results show that the improved routing protocol using CLB-DSR can effectively balance network load, improve the network throughput and reduce the end-to-end delay, the rate of data dropped.

关键词： Load management Ad hoc networks Routing protocols Energy consumption Delay effects Storms Mobile computing Sensor systems Clustering algorithms computers

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L-UCON: Towards Layered Access Control with UCON

L-UCON: Towards Layered Access Control with UCON

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IEEE International Conference on Computational science and Engineering, CSE

作者： Hao Hu Hao Li Dengguo Feng National Engineering Research Center for Information Security Beijing China Department of Electronic Engineering and Information Science University of Science and Technology Hefei China The State Key Laboratory of Information Security Institute of Software Chinese Academy and Sciences Beijing China

Traditional access control solutions suffer from difficulties in access rights authorization and usage policy enforcement, especially in highly distributed environments. The layered nature of common digital content should also be exploited to efficiently provide the user with choices over digital content layers. This paper presents a layered access control architecture L-UCON based on usage control model UCON and trusted computing. We are motivated to design L-UCON as a general access solution by binding policies to usage controlled digital content. Moreover, L-UCON is a negotiable solution caring about both the user's and the owner's benefits. Test results show that performance of L-UCON is acceptable.

关键词： Access control Permission information security Authorization Protection Privacy Books information science computer architecture Testing

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A stochastic method for controlling the scaling parameters of Cauchy mutation in fast evolutionary programming

A stochastic method for controlling the scaling parameters o...

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Congress on Evolutionary Computation

作者： Yunji Chen Ke Tang Tianshi Chen Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing China Nature Inspired Computation and Applications Laboratory Department of Computer Science and Technology University of Science and Technology of China Hefei Anhui China

The fast evolutionary programming (FEP) introduced the Cauchy distribution into its mutation operator, thus the performances of EP were promoted significantly on a number of benchmark problems. However, the scaling parameter of the Cauchy mutation is invariable, which has become an obstacle for FEP to reach better performance. This paper proposes and analyzes a new stochastic method for controlling the variable scaling parameters of Cauchy mutation. This stochastic method collects information from a group of individuals randomly selected from the population. Empirical evidence validates our method to be very helpful in promoting the performance of FEP.

关键词： Stochastic processes Genetic mutations Genetic programming Laboratories Random variables Gaussian distribution Control systems Stochastic systems computer architecture computer applications

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