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Threshold Ring Signature Scheme Based on TPM

China Communications 2012年第1期9卷 80-85页

作者： Gong Bei Jiang Wei Lin Li Li Yu Zhang Xing College of Computer Science Beijing University of Technology Beijing 100124 P. R. China Institute of Electronic Technology Information Engineering University Zhengzhou 450004 P. R. China State Key Laboratory of Information Security Institute of Sottware Chinese Academy of Sciences Beijing Beijing 100049 P. R. China Key Laboratory of Information and Network Security 3rd Research Institute Ministry of Public Security Shanghai 201204 P. R. China

The conventional ring signature schemes cannot address the scenario where the rank of members of the ring needs to be distinguished, for example, in electronically commerce application. To solve this problem, we presented a Trusted Platform Module （TPM）-based threshold ring signature schen. Employing a reliable secret Share Distribution Center （SDC）, the proposed approach can authenticate the TPM-based identity rank of members of the ring but not track a specific member＇s identity. A subset including t members with the same identity rank is built. With the signing cooperation of t members of the subset, the ring signature based on Chinese remainder theorem is generated. We proved the anonymity and unforgeability of the proposed scheme and compared it with the threshold ring signature based on Lagrange interpolation polynomial. Our scheme is relatively simpler to calculate.

关键词： ring signature TPM threshold Chinese remainder theorem rank

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Restrictive mechanism of flow control among non-cooperative Internet users

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Science China(information Sciences) 2011年第1期54卷 12-22页

作者： TAO Jun1,2,ZHONG Xiao1,2 & LU YiFei1,2 1key laboratory of computer network and information integration,Southeast University, Ministry of Education,Nanjing 210096,China 2School of computer Science and Engineering,Southeast University,Nanjing 210096,China 1. Key Laboratory of Computer Network and Information Integration Southeast University Ministry of Education Nanjing 210096 China2. School of Computer Science and Engineering Southeast University Nanjing 210096 China

The flow and congestion control methods based on one-shot game model with non-cooperative game theory can explain the non-cooperative behavior of Internet ***,the low effciency of equilibrium solutions affects their *** the behavior of flow and congestion control based on infinitely repeated game models is addressed;the repeated and infinitely repeated flow and congestion control game model is presented; the existence and optimization of the Nash equilibrium point are proved;the discount factor in repeated game is discussed;the punishment and threat strategy to users'misbehavior is studied in N-users infinitely flow control game;the punishment restrictive method of users'behavior is designed in infinitely and finitely games;finally,a flow control algorithm based on repeated game,FCAR,is provided based on the conclusions of repeated game *** results of experiment and simulation show that FCAR algorithm could regularize and restrict users' misbehavior *** algorithm can also make non-cooperative Internet users achieve cooperation in order to optimize the utility of the whole flow and congestion control system.

关键词： Nash equilibrium utility infinitely and finitely repeated game flow and congestion control

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Anonymous authentication-oriented vehicular privacy protection technology research in VANET

Anonymous authentication-oriented vehicular privacy protecti...

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2nd Annual Conference on Electrical and Control Engineering, ICECE 2011

作者： Zhang, Shuai Tao, Jun Yuan, Yijia Key Laboratory of Computer Network and Information Integration Ministry of Education Southeast University Nanjing China

ISBN: (纸本)9781424481637

Vehicular Ad hoc networks (VANET) consists of several vehicular nodes and uses 802.11p protocol for communication. Because of its unique characteristics, such as fast speed, serious Doppler effect, large node number etc, VANET is vulnerable to be affected by a variety of security threats. In this paper, we firstly introduce the system architecture, applications and categories of attacks in VANET. Then we summarize several types of anonymous authentication techniques which aim at protecting the privacy of vehicular nodes, then discuss and compare the typical anonymous authentication schemes of each type. Finally, we present the problems which should be considered in the next step of research. © 2011 IEEE.

关键词： Vehicular ad hoc networks

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Frequent closed itemsets mining using ITBitree

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International Journal of Advancements in Computing Technology 2012年第17期4卷 271-279页

作者： Ren, Jiadong Song, Wei Yu, Shiying College of Information Science and Engineering Yanshan University Qinhuangdao Hebei 066004 China The Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province Qinhuangdao City 066004 China Hebei Provincial S and T Management Information Center 159 Dongfeng Road Shijiazhuang Hebei 050021 China

The set of frequent closed itemsets is much smaller than the one of all frequent itemsets. Meanwhile it retains the completeness. In this paper, we propose an ITBitree-based algorithm, called ITBitreeFCIM (ITBitree Frequent Closed Itemsets Miner), for mining the frequent closed itemsets directly. A novel structure termed ITBitree (Itemset Tidset Binary Tree) is defined to store the transaction and itemset information. Frequent closed itemsets are generated directly by searching the right nodes in each layer and the right nodes in their respective search space deeply from this tree using top-down strategy. For the items with same support in the adjacent layers or the items with the same Tids, we use item merging technique to prune the search space. The searched space is used to avoid the generation of duplicates and enormous closure checks. In the process we do not need to check whether a candidate itemset is closed, so we save a lot of time. The experiment proofs the efficiency of the proposed approach.

关键词： Data mining

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A DAG-based algorithm of mining frequent closed itemsets in high dimensional datasets

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International Journal of Advancements in Computing Technology 2012年第19期4卷 213-222页

作者： Dong, Jun Chen, Shuai Chen, Jing Huang, Guoyan Ren, Jiadong College of Information Science and Engineering Yanshan University 066004 China The Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province Qinhuangdao City 066004 China Production Management Department Shanghai Aircraft Manufacturing Co.Ltd 200436 China

Algorithms based on row enumeration always scan and construct conditional transposed tables, which increases the execution time and space cost. To address this problem, we adopt the DAG (Directed Acyclic Graph) to compress the dataset to save the memory space. In DAG, each node is related to a rowid, and each two nodes have a corresponding directed edge which stores the common items of the two rowids. Each row is given an integer according to its coming order and the DAG follows that order. A directed acyclic graph records the relation between rows and items by doing AND(&) operation with the nodes' binary code of the edges. We also present DAGHDDM which is a new approach for mining frequent closed itemsets in high dimensional datasets. In this algorithm, we adopt the BitTable to compress the dataset firstly, and then construct DAG according to the BitTable. We increase the same items of the adjacent edges to implement pattern growth, traverse the DAG in reversal way and adopt a close-checking method to generate all frequent closed itemsets. It scans the dataset only once and does not generate candidate itemsets. The experimental results show that the proposed DAGHDDM algorithm can decrease the cost of time.

关键词： Directed graphs

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Traffic classification based on port connection pattern

Traffic classification based on port connection pattern

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2011 International Conference on computer Science and Service System, CSSS 2011

作者： Cheng, Guang Wang, Song Key Laboratory of Computer Network and Information Integration Southeast University Ministry of Education Nanjing 210096 China

ISBN: (纸本)9781424497638

While the traditional Web, Email and other Internet applications are still used large-scale, Internet applications, such as typical P2P resource sharing, streaming, games, instant messaging and other new applications emerging, is generating the rapid growth traffic. Connection pattern approach is to observe and identify connection patterns of host behavior at the transport layer. This method has no access to packet payload, no knowledge of port numbers and no additional information other than what current flow collectors provide. But traffic classification method based on host connection pattern can't distinguish some similar applications provided by one server. This paper analyzes the connection pattern between servers for SMTP, POP3, Web, BT traffic, and the distribution of simultaneous connections for each server port, and then propose a new traffic classified approach based on port connection pattern and the simultaneous connection number. The classified method can distinguish WEB, SMTP, POP3, and BT traffic each port in a server without any knowledge of port. The experimental result shows that this method is effective. © 2011 IEEE.

关键词： Peer to peer networks

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Improvement on masked S-box hardware implementation

Improvement on masked S-box hardware implementation

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International Conference on Innovations in information Technology

作者： Juanli Zeng Yi Wang Cheng Xu Renfa Li College of Information Science and Engineering Hunan University Changsha Hunan P. R. China Department of Electrical & Computer Engineering National University of Singapore Singapore Hunan Province Key Laboratory of Network and Information Security

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(((2 2 ) 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.

关键词： Logic gates Hardware CMOS integrated circuits Encryption Field programmable gate arrays computer architecture

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Trust Model Based on Structured Protection for High Level Security System

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China Communications 2012年第11期9卷 70-77页

作者： Liao Jianhua Zhao Yong Zhan Jing School of Electronics Engineering and Computer Science Peking University Beijing 100871 P. R. China School of Computer Science and Technology Beijing University of Technology Beijing 100124 P. R. China Key Laboratory of Network Security and Cryptology Fujian Normal University Fuzhou 350007 P. R. China State Key Laboratory of Information Security Institute of So ware Chinese Academy of Sciences Beijing 100049 P. R. China

In order to ensure the security of information systems, it's essential to make sure that system behaviors are trusted. By analyzing threats that exist in executing procedures, a trust model based on structured protection is proposed. We consider that functional components, system actions and message flows between components are three key factors of information systems. Structured protection requirements on components, connections and action parameters are also provided. Four trusted properties of the model are deducted through formal analysis, and trusted system behavior is defined based on these properties. Furthermore, decision theorem of trusted system behavior is proved. The developed prototype system indicates the model is practical. It is a general theory model built on logic deduction and independent on specific environment and the behaviors of the system designed and implemented following the model are trusted.

关键词： trusted computing security assurance structured protection

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Currency characteristic extraction and identification research based on PCA and BP neural network

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Journal of Convergence information Technology 2012年第2期7卷 38-44页

作者： Cao, Bu-Qing Liu, Jian-Xun Wen, Bin School of Computer Science and Engineering Key Laboratory of Knowledge Management and Network-based Manufacture Hunan University of Science and technology Xiangtan 411201 China School of Information Science and Technology Hainan Normal University Haikou 571158 China

In recent years, Principle Component Analysis is an extraction method for statistics characteristic, which has been more researched and widely used in the signal processing, pattern recognition, digital image processing and other fields. This paper mainly describe that original currency characteristic vectors will be carried the linear transform by Principle Component Analysis Method, and then reduced-dimension original currency characteristic vector is automatically classified by BP Neural networks, and finally identification research experiment is made for different kinds of currency,such as 1 yuan, 5 yuan, 10 yuan and 20 yuan. The experiment results indicate that currency characteristic extraction and identification algorithm based on Principle Component Analysis and BP neural network has higher identification rate and better identification effect.

关键词： Image processing

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A fast broadcast protocol for wireless sensor networks

A fast broadcast protocol for wireless sensor networks

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4th International Conference on Human-Centric Computing, HumanCom'11 and the 6th International Conference on Embedded and Multimedia Computing, EMC'11

作者： Zhang, Yang Wang, Yun School of Computer Science and Engineering Southeast University Key Laboratory of Computer Network and Information Integration MOE Nanjing China

ISBN: (纸本)9789400721043

Broadcast is a hot topic in wireless sensor network research. The main challenges are from network instability and complexity of communication collision. Currently, the broadcast protocols for sensor network focus on reducing the energy overhead without concerning thoroughly about the delay issue. In some real-time scenarios, these broadcast protocols are not very appropriate to some extent. This paper proposes a new kind of rapid broadcast protocol for sensor network, which introduces the concept of the umbrella topology. The simulation experiment shows that an umbrella topology structure is more efficient to solve the delay issue. Finally, we compare the protocol we proposed with the simple broadcast protocol called flooding. The result shows that the fast broadcast protocol can reduce the number of transmissions and decrease the routing delay. © 2011 Springer Science+Business Media B.V.

关键词： Wireless sensor networks

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