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International Conference on computer and information Technology (CIT)

作者： Xu an Wang Xiaoyuan Yang Key Laboratory of Information and Network Security Engineering College of Chinese Armed Police Force Xi'an China

In 1998, Blaze, Bleumer and Strauss proposed new kind of cryptographic primitives called proxy re-encryption and proxy re-signature. In proxy re-encryption, a proxy can transform a ciphertext computed under Alice's public key into one that can be opened under Bob's decryption key. In proxy re-signature, a proxy can transform a signature computed underAlice's secret key into one that can be verified by Bob's public *** re-cryptography can find many interesting applications in our life. In this paper, we introduce a new attack- DDos attack against proxy in the proxy re-cryptography. Although this attack can also be implemented against other cryptographic primitives,the danger caused by it in proxy re-cryptography seems more *** revisit the current literature, paying attention on their resisting DDos attack ability. We suggest a solution to decline the impact of DDos attacking. Also we give two new efficient proxy re-encryption schemes which can achieve CCA2 secure based on Cramer-Shoup encryption scheme and prove its security. At last we give our conclusions with hoping researchers to pay more attention to this attack.

关键词： computer crime Identity-based encryption Public key cryptography Public key computer networks information technology Laboratories computer security information security Educational institutions

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An IND-CCA2 Secure key-Policy Attribute Based key Encapsulation Scheme

An IND-CCA2 Secure Key-Policy Attribute Based Key Encapsulat...

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The First International Conference on Multimedia information networking and security(第一届国际多媒体网络信息安全会议 MINES 2009)

作者： Changji Wang Yang Liu Jung-Tae Kim School of Information Science and Technology Guangdong Province Information Security Key Laboratory Department of Electronic Engineering Network & Information Security Lab Mokwon University Taejon 30

Attribute based encryption has become an active topic within the last few years, which can be regarded as a special identity based encryption integrated with flexible access structure. In this paper, we extend the concept of key encapsulation mechanisms to the attribute-based setting and proposed a key-policy attribute based key encapsulation scheme. The proposed scheme is proved to be IND-CCA2 secure in the standard model under Decisional Bilinear Diffie- Hellman assumption.

关键词： attribute based encryption key encapsulation mechanisms key-policy attribute based key encapsulation mechanisms

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Policy-driven autonomic network resource management for observation and detection data communication

Policy-driven autonomic network resource management for obse...

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2009 International Conference on High Performance Computing, networking and Communication Systems, HPCNCS 2009

作者： Feng, Jing Ma, Weijun Liu, Dawei Yu, Xiaoxing Institute of Meteorology PLA University of Science and Technology Nanjing 211101 China Key Laboratory of Computer Network and Information Integration Ministry of Education Southeast University Nanjing 210096 China School of Information Science and Engineering Southeast University Nanjing 210096 China

ISBN: (纸本)9781615676606

The increase of the business and management complexity requires more adaptive and higher selfmanaged equipments, application processes and management systems, which promotes the development of autonomic computing and communication networks. The meteorological and hydrological business system (MHBS) is a typical composite functional system, which includes data collecting, transporting, convergence and clean up, distributing and publishing, pre-processing, storage, and weather forecasting. In order to realize self-management of MHBS, autonomic concept is introduced and autonomic network management architecture with associated model is proposed firstly. According to the measured data from observation and / or detection devices, the system may perceive the work situations of these devices by means of prediction models. Driven by a set of system management polices, some well-defined events can be processed, which enable generating configuration and adjustment suggestions automatically. The instances of policy-driven data communication management with multiple channels are given literally to show the model's mechanisms.

关键词： Weather forecasting

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Customer behavior pattern discovering based on mixed data clustering

Customer behavior pattern discovering based on mixed data cl...

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2009 International Conference on Computational Intelligence and Software engineering, CiSE 2009

作者： Cheng, Mingzhi Xin, Yang Tian, Yangge Wang, Cong Yang, Yixian Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China Key Laboratory of Network and Information Attack and Defence Technology Ministry of Education Beijing University of Posts and Telecommunications China National Engineering Laboratory for Disaster Backup and Recovery Beijing University of Posts and Telecommunications Beijing China International School of Software Wuhan University Wuhan China

ISBN: (纸本)9781424445073

To be effective to retain customers and enhance the marketing capabilities, it is necessary to improve the personalization of e-commerce systems. Clustering is a reliable and efficient technology to provide personal service in e-commerce system. However, current research on clustering algorithm usually based on numeric data or categorical data. To analysis customer behavior, mixed data set must be handled. With extending the ROCK algorithm, a novel method to deal with mixed data set was proposed and experiment shows the new algorithm is efficient and successful. ©2009 IEEE.

关键词： Electronic commerce

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Approach to extracting hot topics based on network traffic content

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Frontiers of Electrical and Electronic engineering in China 2009年第1期4卷 20-23页

作者： Yadong ZHOU Xiaohong GUAN Qindong SUN Wei LI Jing TAO MOE Key Lab for Intelligent Networks and Network Security State Key Lab for Manufacturing SystemsXi’an Jiaotong UniversityXi’an 710049China Department of Automation Tsinghua National Lab for Information Science and TechnologyTsinghua UniversityBeijing 100084China School of Computer Science and Engineering Xi’an University of TechnologyXi’an 710048China

This article presents the formal definition and description of popular topics on the Internet,analyzes the relationship between popular words and topics,and finally introduces a method that uses statistics and correlation of the popular words in traffic content and network flow characteristics as input for extracting popular topics on the *** on this,this article adapts a clustering algorithm to extract popular topics and gives formalized *** test results show that this method has an accuracy of 16.7%in extracting popular topics on the *** with web mining and topic detection and tracking(TDT),it can provide a more suitable data source for effective recovery of Internet public opinions.

关键词： hot topic extraction network traffic content Internet public opinion analysis

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Boundary recognition in sensor networks by building relative contours

Boundary recognition in sensor networks by building relative...

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Conference on Local computer networks (LCN)

作者： Kai Li Yun Wang School of Computer Science & Engineering Key Laboratory of Computer Network and Information MOE South-East University Nanjing China

Wireless sensor networks (WSN) are affected by underlying environments in which sensors are deployed randomly. Inevitably, there are many irregular holes in a WSN because of the existence of obstacles or the death of some sensors. To detect these holes is of great importance to both WSN applications and networking functionalities. Holes are described by a set of sensor nodes on their boundaries. In this paper, we study the problem of identifying boundaries of holes in a WSN. By extracting hidden geometric features in the topology of a WSN, we are able to recognize sensor nodes on both inner and outer boundaries of holes. Methods proposed in this paper relies on neither the knowledge of localization nor the unit-disk communication model. We also propose a distributed algorithm to discover holes and identify nodes on boundaries. Simulation results show that our method works well for WSNs with many inner holes and irregular outer boundaries.

关键词： Wireless sensor networks Sensor phenomena and characterization computer networks network topology Distributed algorithms Floods Iterative algorithms computer science Feature extraction Neodymium

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Towards a Source-Code Oriented Attestation

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China Communications 2009年第4期6卷 82-87页

作者： Ruan Anbang Shen Qingni Wang Li Qin Chao Gu Liang Chen Zhong School of Software and Microelectronics Peking University Beijing 102600 China Network and Information Security Laboratory Institute of Software School of Electronics Engineering and Computer Science Peking University Beijing 100871 China Key Laboratory of High Confidence Software Technologies of the Ministry of Education Peking University Beijing 100871 China First Research Institute of Ministry of Public Security of China Beijing 100048 China

The Binary-based attestation （BA） mechanism presented by the Trusted Computing Group can equip the application with the capability of genuinely identifying configurations of remote system. However, BA only supports the attestation for specific patterns of binary codes defined by a trusted party, mostly the software vendor, for a particular version of a software. In this paper, we present a Source-Code Oriented Attestation （SCOA） framework to enable custom built application to be attested to in the TCG attestation architecture. In SCOA, security attributes are bond with the source codes of an application instead of its binaries codes. With a proof chain generated by a Trusted Building System to record the building procedure, the challengers can determine whether the binary interacted with is genuinely built from a particular set of source codes. Moreover, with the security attribute certificates assigned to the source codes, they can determine the trustworthiness of the binary. In this paper, we present a TBS implementation with virtualization.

关键词： remote attestation trusted building system virtualization source-code

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Ideal Perfect Multilevel Threshold Secret Sharing Scheme

Ideal Perfect Multilevel Threshold Secret Sharing Scheme

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The Fifth International Conference on information Assurance and security(第五届信息保障与安全国际会议)

作者： Changlu Lin Lein Harn Dingfeng Ye Key Laboratory of Network Security and Cryptology Fujian Normal University China State Key Laborat Department of Computer Science Electrical Engineering University of Missouri-Kansas CityUSA State Key Laboratory of Information Security Graduate University of Chinese Academy of SciencesChin

ISBN: (纸本)9780769537443

Shamir proposed the first (t, n) threshold secret sharing scheme. Shamir's scheme is ideal and perfect. In this paper, we propose two modifications of Shamir's secret sharing scheme. In our first modification, each shareholder keeps both x-coordinate and y-coordinate of a polynomial as private share. In our second modification, dealer uses polynomial with degree larger than the threshold value t to generate shares for a (t, n) threshold scheme. We show that these two modified schemes are ideal and perfect. Using these two modifications, we design a multilevel threshold secret sharing schemes (MTSS). We prove that the proposed scheme is secure.

关键词： Secret sharing threshold multilevel threshold secret sharing

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A New Routing Scheme Based on Greedy Tree in Delay Tolerant networks

A New Routing Scheme Based on Greedy Tree in Delay Tolerant ...

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IEEE International Symposium on computer network and Multimedia Technology, CNMT

作者： Haizheng Yu Jianfeng Ma Hong Bian Key Laboratory of Computer Network and Information Security Xidian University Xi'an China School of Maths-physics and Information Sciences Xinjiang Normal University Urumqi China

Delay tolerant networking (DTN) is a new store-and-forward architecture and protocol suite for the networks which is intermittent connectivity. Depending on the nodes ability of store and forward, the messages are delivered to their destination with the proper choice of routing protocol by nodes' mobility. In order to successful delivery, many routing protocols use multiply copies methods. Although the messages are transferred to the destination, the redundant of messages copies increase much. These routing protocols are not appropriate for energyconstrained and bandwidth-constrained applications such as the wireless networks. In many resource-constrained mobile wireless DTN networks, single copy routing schemes should be used suitably. This paper presents a new routing scheme of single-copy based on the DTN connectivity graph and the corresponding greedy tree. The nodes choose the next intermediate node to transmit the message by comparing the location of nodes in the greedy tree. We show that delivery ratio is increased significantly by using our scheme in the single-copy routing.

关键词： Disruption tolerant networking Tree graphs Routing protocols Laboratories computer networks information security Wireless networks Delay effects computer architecture network topology

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A NEW CREDENTIAL ROUTING MODEL BASED ON TRUST THEORY

A NEW CREDENTIAL ROUTING MODEL BASED ON TRUST THEORY

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2009 IEEE International Conference on network Infrastructure and Digital Content(2009年IEEE网络基础设施与数字内容国际会议 IEEE IC-NIDC2009)

作者： Daofeng Li Lize Gu Bin Sun Xinxin Niu Yixian Yang Information Security Center State Key Laboratory of Networking and Switching Technology Key Laboratory of network and information attack & defense technology of MOE National Engineering Laboratory for Disaster Backup and RecoveryBeijing University of Po

Router has acted as more and more important role in the large-scale network. In the meantime, the security of the router become more seriously. In this paper, we propose a new algorithm to decide a credential routing path from the start router to the end one based on the trust theory that considers the trustworthy of link, the cost of link and the trustworthy of router as the critical factors so as to utilize the principle of the grey correlation degree to obtain a credential routing path, instead of weighted mean in existed methods of trust measurement. We guarantee that packet can secure transfer under the credential routing path and identify the remote routers that are subject to attacks.

关键词： IP network Credential routing path trust theory grey correlation analysis

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