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International Conference on Computational Intelligence and security

作者： Bin Wang Fan Li Xinhong Hei Weigang Ma Lei Yu Shaanxi Key Laboratory for Network Computing and Security Technology Xi'an University of Technology Xi'an China School of Computer Science and Engineering Xi'an University of Technology Xi'an China

In order to ensure the safeties of high-speed train, a lot of sensors are installed in the train to real-time monitor its operation status. These sensors collect amounts of data which may be several GBs for one time operation of one train. Such big amount data need to be stored and managed with high efficiency. In this paper, a hybrid storage architecture by combine database and file system is proposed, in which the separation on the row and column is performed respectively when storing the raw monitored data. Further, an improved compression algorithm is used to compress double float data in the monitored data. The simulation result shows that the proposed method is effective and feasible.

关键词： Memory Indexes File systems Monitoring Sensors Servers

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A method of oversized image generation based on stitching JPEG file streams

International Journal of Signal Processing, Image Processing...

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International Journal of Signal Processing, Image Processing and Pattern Recognition 2015年第8期8卷 159-168页

作者： Sun, Qindong Hua, Wu Tian, Minying Wang, Yan School of Computer Science and Engineering Xi’an University of Technology Xi’an China Shaanxi Key Laboratory of Network Computing and Security Xi’an University of Technology Xi’an China

Due to memory limitation, the displaying and processing of the oversized images have been a bottleneck for various applications, which is a hot research spot in the image processing field. The traditional methods are almost based on the BMP format to generate oversized images, of which the time and space complexity are very high. In this paper, we have deeply analyzed the encoding scheme of JPEG image and proposed an oversized image generation method based on stitching JPEG file streams. According to this method, the oversized images are block plotted and then transformed and saved as JPEG format files respectively. In the end, the block JPEG files are then combined into an integrated JPEG image. The experiment results show that, our method can effectively improve the speed of oversized image generation and reduce the memory consumption. The time and space performance of our method are better than existing methods. © 2015 SERSC.

关键词： Image enhancement

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An algorithm for automatic photo typesetting based on kinship

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Journal of Information and Computational Science 2014年第13期11卷 4727-4736页

作者： Sun, Qindong Wang, Yan Tian, Minying Wang, Qian Zhang, Jingpeng Key Lab for Network Computing and Security of Shaanxi Province Xi'an University of Technology Xi'an China

Photo typesetting belongs to the rectangular packing problems, currently the algorithms of rectangular packing problems can be divided into two categories: heuristic methods and modern intelligent based methods. For both of these methods, the similarity of contents do not be well considered, the packing order of the rectangular pieces are chaos. Therefore, this drawback will cause problems for photo typesetting. In this paper we propose a hybrid algorithm for the photo typesetting problem based on kinship. According to our algorithm, the kinship of different photos is calculated by their absolute paths, and then all photos are packed based on the distance of their kinship. Compared with the existing methods, according to the computation of different scales of tests, our algorithm shows faster typesetting speed and higher utilization ratios. This algorithm could solve the sort problem caused by chaos typesetting photos of different customers after lots of photos were typeset. Our algorithm could greatly improve the practical application of photo typesetting. Copyright © 2014 Binary Information Press.

关键词： Heuristic methods

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Linear (k, n) Secret Sharing Scheme with Cheating Detection

Linear (k, n) Secret Sharing Scheme with Cheating Detection

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International Conference on computer and Information technology (CIT)

作者： Yan-xiao Liu Zhi-xiao Wang Wen-yao Yan Shaanxi Key Lab for Network Computing and Security Xian University of Technology Xian China Xian Innovation College Yanan University Xian China

Linear (k,n) secret sharing scheme is a class of (k,n) secret sharing, where all the n shares of a secret satisfy a linear relationship. It plays an important role in other cryptographic systems, such as multi-party computation and function sharing schemes. On the other hand, cheating problem in (k,n) secret sharing is an important issue, such that cheaters (dishonest players) submit forged shares during secret reconstruction to fool honest players. During decades of research on cheating prevention, vast (k,n) secret sharing schemes against cheating have been proposed. However, most of these schemes are not linear schemes since it contains redundant information in their shares to achieve cheating detection. Since linear (k,n) secret sharing is an important primitive in threshold cryptography, linear (k,n) secret sharing scheme with the capability of cheating detection is also worthwhile to be discussed. In this paper, we propose a linear (k,n) secret sharing scheme against cheating based on Shamir's original scheme, which possesses the following merits: (1) Our scheme is just combination of two Shamir's schemes. Therefore, our scheme can be used in other threshold cryptographic systems which are based on Shamir's scheme. (2) The size of share in proposed scheme almost reaches its theoretic lower bound in (k,n) secret sharing with cheating detection. (3) In the phase of cheating detection, only one honest player can detect the cheating from other k-1 cheaters, which achieves a stronger detection effective than the previous linear secret sharing schemes against cheating.

关键词： Cryptography Information rates Conferences computers Information technology Ubiquitous computing

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Analysis and improvement of a provable secure fuzzy identity-based signature scheme

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Science China(Information Sciences) 2014年第9期57卷 156-160页

作者： XIONG Hu CHEN YaNan ZHU GuoBin QIN ZhiGuang School of Computer Science and Engineering University of Electronic Science and Technology of China Chongqing Key Lab of Computer Network and Communication Technology Key Lab of Network Security and Cryptology Fujian Normal University School of Traffic and Transportation Beijing Jiaotong University

To enjoy the property of error tolerance in the biometric identities extraction,the fuzzy identitybased signature has been initialized to issue a signature on behalf of a descriptive attributes setωinstead of a single *** attributes setω′can be used to verify the validity of the signature in case the distance betweenωandω′is less than a pre-defined ***,Wang re-formalized the notion of fuzzy identitybased signature and proposed a concrete pairing-based construction along with the efficiency analysis and formal security ***,by giving concrete attack,we indicate that Wang’s scheme is not secure against forgery *** also present an improved scheme to prevent this attack.

关键词： identity-based cryptosystem fuzzy identity-based signature forgery attack cryptanalysis bilinear pairings

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Research on the design of the effective transmission scheduling algorithm based on the factory wireless sensor network

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Open Automation and Control Systems Journal 2014年第1期6卷 1426-1434页

作者： Zhang, Yunyi Liu, Shuru Zhang, Ran Wei, Wei College of Computer and Communication Engineering Zhengzhou University of Light Industry Zhengzhou China School of Computer Science and Engineering Xi’an University of Technology Xi’an China Shaanxi Key Laboratory for Network Computing and Security Technology China

In order to make the sensing data in the monitoring equipment’s sensor nodes reach to the monitoring center as soon as possible and deal with the equipment which has some problems, the network time delay should be guaranteed in the accessible Time Delay Bound. The paper mainly researches the transmission scheduling algorithm with the chain framework, which adopts the Token to do the transmission in the chain and then arranges the transmission order in each node for avoiding the occurrence of the collision and offering the guarantee of the time delay. The node order in each chain is the order of data packets which are transmitted by nodes, while the route of the data packet transmission is according to the shortest route in the Sink Tree for reducing the time delay. © Zhang et al.;Licensee Bentham Open.

关键词： Scheduling algorithms

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An ML estimation based robust Chinese remainder theorem for reals

An ML estimation based robust Chinese remainder theorem for ...

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IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)

作者： Wenjie Wang Xiaoping Li Xiang-Gen Xia MOE Key Lab for Intelligent Networks and Network Security Xi'an Jiaotong University Xian Shaanxi P. R. China Xidian University Xian China Department of Electrical and Computer Engineering University of Delaware Newark DE USA

ISBN: (纸本)9781479919499

In this paper, we consider the CRT problem for real numbers with noisy remainders that follow wrapped Gaussian distributions. We propose the maximum likelihood (ML) estimation based CRT when the remainder noises may not necessarily have the same variances. The proposed algorithm only needs to search for the solution among L elements, where L is the number of remainders. We compare the performances of the newly proposed algorithm and the existing algorithm in term of numerical simulations. The results demonstrate that the proposed algorithm not only has a better performance when the remainders have different error levels/variances, but also has a much lower computational complexity.

关键词： Robustness Maximum likelihood estimation Noise Image reconstruction Noise measurement Computational complexity

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Next Generation of Web-based Information Management System for National Volunteer Service

Next Generation of Web-based Information Management System f...

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2015 Joint International Mechanical,Electronic and Information technology Conference(JIMET 2015)

作者： Feng Tian Yundong Yao Tian Lan Qinghua Zheng Jingjing Kou Haifei Fu Nazaraf Shah Systems Engineering Institute Xi'an Jiaotong University Shaanxi Province Key Lab.of Satellite and Terrestrial Network Tech.R&D Department of Computer Science and Technology Xi'an Jiaotong University

ISBN: (纸本)9781510817982

This paper presents a survey about the existing web-based information management system for volunteer services. Based on the survey results the paper highlights the new features and functions of the next generation of the volunteer service system. A prototype system incorporating these features and functions has also been implemented and presented.

关键词： volunteer service volunteer information management next generation

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Alias Detection Across Multi-online Applications Based on User's Behavior Characteristics

Alias Detection Across Multi-online Applications Based on Us...

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IEEE International Conference on Trust, security and Privacy in Computing and Communications (TrustCom)

作者： Zhaoli Liu Tao Qin Xiaohong Guan Xiaoqiang Niu Tao Yang MoE Key Lab for Intelligent Networks and Network Security Xi'an Jiaotong University Xi'an Shaanxi China Tsinghua National Laboratory for Information Science and Technology Tsinghua University Beijing China Department of Automation Northwestern Polytechnical University Xi'an China

ISBN: (纸本)9781467379533

The quickly development of many online applications benefit our daily life. But on the other hand, user usually holds several aliases in different online applications. The aliases across multi-online applications detection are becoming more and more important for E-marketing and user's behavior monitoring. In this paper, we propose a method for detecting aliases across multi-online applications. Firstly, we employ the active and positive methods to collect the user's alias and behavior information from several famous applications, including Email, RenRen and etc. Then we analyzed the user's behavior characteristics in specific applications, and some interesting findings are proposed. Finally, we perform the alias detection based on user's behavior profiles, including the similarity of the ID and the number of appearance in specific IP address. According to user's behavior habit, the aliases belong to the same physical users are usually similar with each other. Furthermore, one specific user usually use the same computer to login into different applications, thus the IP addresses used for accessing those applications usually same with each other. Based on those assumptions we employ the Bayesian network to perform alias detection. Empirical results based on actual data verify the efficiency and correctness of the proposed methods.

关键词： Multi-application Alias detection Bayes networks

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Fully secure predicate-based broadcast encryption

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Journal of Computational Information Systems 2014年第2期10卷 611-618页

作者： Sun, Jin Hu, Yupu Wang, Shangping Department of Application Mathematics in Xi'an University of Technology Xi'an 710054 China Key Lab. of Computer Network and Information Security Xidian University Xi'an 710071 China

According to the broadcast encryption scheme with wide applications in the real world, a fully secure predicate-based broadcast encryption was proposed by combining with Waters dual system encryption, predicate encryption and the orthogonality property of composite-order bilinear groups. Based on the standard model, the scheme can achieve constant-size key and ciphertext, and guarantee the security of the plaintext M as well as the security of the attribute vectors. The scheme is proved by using the three static assumptions. Furthermore, the analysis results indicated that the scheme of this paper is fully secure and can satisfy the higher efficiency and practice requirement. Copyright © 2014 Binary Information Press.

关键词： Cryptography

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