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Secure network coding in the presence of eavesdroppers

Science China(Information Sciences) 2010年第3期53卷 648-658页

作者： LUO MingXing1,2,3, YANG YiXian1,2,3, WANG LiCheng1,2,3 & NIU XinXin1,2,3 1Information security Center, State key laboratory of networking and Switching technology, beijing University of Posts and Telecommunications, beijing 100876, China 2key laboratory of network and Information Attack and Defence technology of MOE, beijing University of Posts and Telecommunications, beijing 100876, China 3National Engineering laboratory for Disaster Backup and Recovery, beijing University of Posts and Telecommunications, beijing 100876, China 1. Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China2. Key Laboratory of Network and Information Attack and Defence Technology of MOE Beijing University of Posts and Telecommunications Beijing 100876 China3. National Engineering Laboratory for Disaster Backup and Recovery Beijing University of Posts and Telecommunications Beijing 100876 China

Our concern, in the paper, is to construct information-theoretic secure network coding in the presence of eavesdroppers. Based on the generalized attack model and all-or-nothing transformation, the security of network coding in the generalized combination network can be characterized by the network capacity and the min-cut bound of wiretapping set from the source. Furthermore, it can be extended to any directed acyclic networks with single source. Compared with the traditional results, we construct information-theoretic secure network coding without additional encryptions and giving up any capacity.

关键词： all-or-nothing transformation secure network coding eavesdropping

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A unified result for variable-rate linear network coding

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Journal of Harbin Institute of technology(New Series) 2010年第5期17卷 657-660页

作者：马松雅卓新建郭钦罗明星杨义先 Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications Key Laboratory of Network and Information Attack and Defence Technology of MOE Beijing University of Posts and Telecommunications National Engineering Laboratory for Disaster Backup and Recovery School of Mathematics and Information Sciences Henan University School of Science Beijing University of Posts and Telecommunications

Fong et *** variable-rate linear network coding for linear ***,the authors didn't investigate it for the other three types of linear network *** this paper,by simple and clear proofs,it is found that there are similar results for variable-rate linear generic and linear dispersion if the field size is large *** means that linear generics and linear dispersions of different dimensions can be implemented on the same network,while each non-source node is required to store only one copy of the local encoding kernel within a ***,an example is given to show that there isn't a similar result for linear multicast.

关键词： Variable-rate linear generic linear dispersion linear broadcast linear multicast

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An improved PrefixSpan-based signatures mining algorithm with offset constraint

An improved PrefixSpan-based signatures mining algorithm wit...

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2nd International Workshop on Intelligent Systems and Applications, ISA2010

作者： Lin, Guanzhou Xin, Yang 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 of MOE Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781424458745

The approach based on payload signatures presents more accurately than that using port number and machine learning algorithms in network traffic identification. The performance of payload-based approach heavily depends on abundant and real-time signatures database. Existing approaches to payload signatures identification involved a manual process which is time-consulting and complicated. In this paper, an improved payload signatures mining algorithm based on PrefixSpan is proposed to automatically extract signatures from special network application traffic. Offset constraint in mining process significantly reduces the size of final signatures database and accelerates extracting process. Moreover, patterns matching algorithm can use offset information to discover signatures in network traffic efficiently. ©2010 IEEE.

关键词： Learning algorithms

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Model checking based security policy verification and validation

Model checking based security policy verification and valida...

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2nd International Workshop on Intelligent Systems and Applications, ISA2010

作者： Ma, Jianli Zhang, Dongfang Xu, Guoai 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 Defense Technology of MOE Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781424458745

Lots of security mechanisms have been applied in current information systems to assure the confidentiality and integrality for the information processed. These mechanisms are selected in accordance with the certain security policies which should satisfy the system requirements. It is necessary to validate the security whether it really and truly protect the system. In this paper, we first define and formalize the validity and reliability for validation and verification criteria for the security validating. Then, we propose a model checking based method to validate the consistency and completeness for security policies. In our method, the system's behaviors are modeled as the transfer structure and the property is described using LTL formula, and the model checker SPIN is applied to verify and validate the security policy. The model checking based validation also can be used to generate the validate sequences. In the end, we approve the method proposed is valid and reliable for information system security validation. ©2010 IEEE.

关键词： Model checking

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Consistency of weighted feature set and polyspectral kernels in individual communication transmitter identification

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Frontiers of Electrical and Electronic Engineering in China 2010年第4期5卷 488-492页

作者： Na SUN Yajian ZHOU Yixian YANG Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing 100876China Key Laboratory of Network and Information Attack and Defense Technology of Ministry of Education Beijing University of Posts and TelecommunicationsBeijing 100876China

This paper presents a method using support vector machine with polyspectral kernels for classification of individual ***,the neighborhood-roughset-based weighted feature set is *** experiments of the algorithms mentioned above indicate that they have consistency,which raises a new weighted *** experiment shows that better classification rate can be achieved.

关键词： polyspectral kernel support vector machine(SVM) neighborhood rough set weighted feature set weighted kernel

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A scheme of trust management system for P2P network

A scheme of trust management system for P2P network

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12th International Conference on Advanced Communication technology: ICT for Green Growth and Sustainable Development, ICACT 2010

作者： Liang, Binbin Gu, Lize Sun, Bin Yang, Yixian Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications China Key Laboratory of Network and Information Attack and Defence Technology of MOE Beijing University of Posts and Telecommunications China

ISBN: (纸本)9788955191455

P2P network has become an important branch of Internet recently, with the significant advantages of full resource utilization, dynamics, openness and high scalable, which helps it achieve wide applications. But security and trust have also become urgent problems for a P2P network due to its openness and anonymousness. Most of the current schemes rely on some trust models, but the research in systematic managing scheme is scarce. Consequently, we propose a scheme of constructing trust management systems in a P2P network here.

关键词： Peer to peer networks

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Identification of frequency-hopping spread spectrum signals using SVMs with wavelet kernels

Identification of frequency-hopping spread spectrum signals ...

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2nd International Workshop on Intelligent Systems and Applications, ISA2010

作者： Sun, Na Zhou, Yajian Yang, Yixian Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China Key Laboratory of Network and Information Attack and Defense Technology of MOE Beijing University of Posts and Telecommunications Beijing 100876 China

ISBN: (纸本)9781424458745

This paper proposes a novel method of using wavelet kernel functions in Support Vector Machines (SVMs), and this method is applied to identification of individual communication transmitter which works in frequency-hopping spread spectrum modulation. The adoption of kernel function can improve the classification rate. The experimental results show how the recognition rates change with the parameters of wavelet kernel function. In a certain specific range, the classification rates maintain at a high level. ©2010 IEEE.

关键词： Support vector machines

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Improved tripartite concurrent signature

Improved tripartite concurrent signature

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2010 2nd International Conference on Computer technology and Development, ICCTD 2010

作者： Ge, Haihui Sun, Yanbin Gu, Lize Zheng, Shihui Yang, Yixian Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China Key Laboratory of Network and Information Attack and Defense Technology MOE Beijing University of Posts and Telecommunications Beijing 100876 China

ISBN: (纸本)9781424488438

The concrete tripartite concurrent signature scheme designed by Susilo et aI. is found being unambiguity. In other words, any fourth party can identify who is the real signer of the publicly available valid signatures before the keystone is released. In order to overcome this flaw, we proposed an improved concrete tripartite concurrent signature (iCTCS) scheme based on the ring signature. Every user can choose his keystone to guarantee the fairness in the proposed scheme. However, the performance analysis results show that the iCTCS scheme is existentially unforgeable under a chosen message attack in the random oracle, and satisfies correctness, ambiguity and fairness. © 2010 IEEE.

关键词： Concretes

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Steganalysis of MSU Stego Video based on discontinuous coefficient

Steganalysis of MSU Stego Video based on discontinuous coeff...

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2010 2nd International Conference on Computer Engineering and technology, ICCET 2010

作者： Wu, Jia Zhang, Ru Chen, Ming Niu, Xinxin Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China Key Laboratory of Network and Information Attack and Defence Technology of MOE Beijing University of Posts and Telecommunications Beijing 100876 China

ISBN: (纸本)9781424463503

MSU(Moscow State University) Stego Video is a public video steganographic tool. It uses a specific data distribution mode to load secret data, so that the message can be extracted correctly even the stego video are compressed. In this paper, based on the analysis of the distribution characteristics of the embedded data, a detection algorithm against MSU embedding is proposed by utilizing the difference of block artifacts distribution between natural frames and stego frames. The algorithm can reliably detect the existence of hidden data. It is easy to implement and computationally efficient, and is suitable for real-time detection. © 2010 IEEE.

关键词： Signal detection

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A new authentication and key agreement protocol of 3G based on Diffie-Hellman Algorithm

A new authentication and key agreement protocol of 3G based ...

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2010 2nd International Conference on Computer Engineering and technology, ICCET 2010

作者： Zhang, Dongfang Zhang, Ru Niu, Xinxin Yang, Yixian Zhang, Zhentao Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China Key Laboratory of Network Information Attack and Defence Technology of MOE Beijing University of Posts and Telecommunications Beijing 100876 China National Cybernet Security Ltd. 100088 United States

ISBN: (纸本)9781424463503

Third Generation (3G) wireless networks are now increasingly being deployed throughout the world. Because of their complex signaling and relatively limited bandwidth, these 3G networks are generally more vulnerable than their wireline counterparts, thus making them fertile ground for some new attacks. In this paper, we propose a novel AKA Protocol scheme of 3G, which is based on Diffie-Hellman Algorithm. This scheme improves the transmission security between ME, VLR and HLR, it also provides message freshness, forward secrecy, robust message confidentiality and message integrity. Man-in-the-middle attack and replay attack are also prevented. However, it cannot prevent the key compromise impersonation because of the shared key scheme. © 2010 IEEE.

关键词： network security

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