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The 2011 International Conference on Electric and Electronics(EEIC 2011)

作者： Chongzhi Gao Zheng-an Yao Dongqing Xie Baodian Wei School of Computer Science Guangzhou University Key Laboratory of Network Security and Cryptology Fujian Normal University College of Mathematic and Computational Science Sun Yat-Sen University Department of Electronics and Communication Engineering Sun Yat-sen University

Electronic sealed-bid auctions are a method to establish the price of goods through the internet while keeping the bids secret during the bidding phase. In this paper, our concern is incoercibility of an auction protocol. This paper gives the first security model of incoercible sealed-bid auctions. By using undeniable signatures and deniable encryptions as building blocks, an efficient sealed-bid auction protocol with incoercibility is also proposed. Furthermore, our construction is proven to be secure in the random oracle model.

关键词： Electronic Sealed-bid Auctions Incoercibility Undeniable Signatures Deniable Encryptions

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Improving the Physical-Layer security of Wireless Two-Way Relaying via Analog network Coding

Improving the Physical-Layer Security of Wireless Two-Way Re...

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2011 IEEE Global Telecommunications Conference - GLOBECOM 2011

作者： Hui-Ming Wang Qinye Yin Xiang-Gen Xia Ministry of Education Key Laboratory for Intelligent Networks and Network Security Xi'an Jiaotong University Xi'an Shaanxi China Xi'an Jiaotong University Xi'an Shaanxi CN Department of Electrical and Computer Engineering University of Delaware Newark DE USA

In this paper, we address the physical-layer security of two-way (bi-directional) transmissions of two terminals with the help of multiple relay nodes in the presence of an eavesdropper, where each node in the network is only equipped with single antenna. The secrecy sum rate is used as the metric of security, which is the rate difference between the legitimate information exchange between the terminals and the information leakage to the eavesdropper. We propose two-phase analog network coding (ANC) and power allocation scheme for the relay nodes and terminals to enhance the security of the data exchange. Three different schemes are proposed. The first scheme is the optimal ANC to achieve the maximum secrecy sum rate, i.e. secrecy capacity, which is found to be mathematically difficult to solve. Two suboptimal schemes are proposed with and without the instantaneous channel state information (CSI) of the eavesdropper, respectively. The solutions of both schemes are shown to be unique and globally optimum, which are solved by convex optimization techniques. Numerical evaluation results of the obtained secrecy sum rate and transmit power are provided and analyzed to show the properties and efficiency of the proposed ANCs.

关键词： Relays security Noise Peer to peer computing Vectors Array signal processing Quality of service

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An anonymity and authentication mechanism for internet of things

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Journal of Convergence Information Technology 2011年第3期6卷 98-105页

作者： Wang, Xiaoliang Sun, Xingming Yang, Hengfu Shah, Saeed Arif College of Information Engineering Xiangtan University Xiangtan 411105 China Department of Computer Science and Technology Nanjing University of Information Science and Technology Nanjin 210044 China Department of Information Science and Engineering Hunan First Normal University Changsha 410205 China Hunan Provincial Key Laboratory of Network and Information Security Hunan University Changsha 410082 China

Authentication has received increasing attention in the literatures of Internet of Things. At the same time, numerous concerns have been raised about the issue of anonymity due to users' awareness of their privacy nowadays. How to achieve trade-off between anonymity and certification simultaneously? In this paper, we propose a security architecture to ensure anonymity and certification for Internet of Things. We use pseudonym and threshold secret sharing approach to resolve conflict between anonymity and certification. Moreover, the implementation of Bloom filter offers security authentication for remote command. security analysis shows that the proposed mechanism can perfectly achieve tradeoff between anonymity, certification, and also resist impersonation, tamper as well as compromise attacks.

关键词： Internet of things

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SWP2P: P2P anonymous trace system based on superposition watermarking

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content Technology and its Applications 2011年第8期5卷 116-126页

A lot of attention has been paid to anonymity due to the users' privacy protection. While peer-topeer (P2P) networks need anonymity capacity, the authority also requires partner traceability to prevent anonymous abuse. So there is a challenge to harmonize the dilemma between the anonymity and authentication in P2P networks. Few P2P protocol provides complete anonymity as well as traceability. In this paper, we propose a security mechanism to ensure anonymity for honest peers and traceability for misbehaving peers in P2P systems. We utilize superposition watermarking based anonymity trace scheme to resolve the conflicts between traceability and anonymity. This scheme uses information processing technology similar to CDMA to superpose path information. security analysis and simulation result show that the superposition watermarking based P2P anonymity trace scheme (SWP2P) can attain tradeoff between anonymity and traceability perfectly.

关键词： Watermarking

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Runtime-Based Boot Components Re-measurement Scheme for Trusted Platform

Runtime-Based Boot Components Re-measurement Scheme for Trus...

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2011 International Conference on Informatics,Cybernetics,and computer engineering(ICCE 2011)

作者： Peng Weiping Zhou Yajian Wang Cong Yang Yixian Key Laboratory of Network and Information Attack & Defence Technology of MOE Beijing University of Posts and Telecommunications School of Computer Science and Technology Henan Polytechnic University Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications National Engineering Laboratory for Disaster Backup and Recovery Beijing University of Posts and Telecommunications

Integrity measurement is just one of the most important features in a trusted computing platform to provide evidence of platform configuration and behavior. Each set of software instructions(binary code) is measured and recorded before it is executed. Especially, all of boot components which be recorded in pre-boot stage can't be re-measured until the platform is rebooted. However, the reality is that many components belong to pre-boot stage, such as BIOS, Boot Loader and MBR, are easily modified or updated in runtime environment. If these updated results of components are treated as configuration requirements for a remote server-side to verify the access request, the remote network access connection will fail. It must restart the host to re-measure there components, and the result of the new measure is not guaranteed right absolutely. We solve this problem by embedding Integrity Measurement Agency Component(IMAC) which has the capability of monitoring transformation, verifying credibility, updating Platform Configuration Registers and recording integrity measurement logs in Linux kernel. The result of performance analysis demonstrates that the method is feasible and credible.

关键词： Trusted Computing Boot Components PCR Integrity measurement Agency Component

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Video steganography using motion vector and linear block codes

Video steganography using motion vector and linear block cod...

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2010 IEEE International Conference on Software engineering and Service Sciences, ICSESS 2010

作者： Pan, Feng Xiang, Li Yang, Xiao-Yuan Guo, Yao Key Laboratory of Network and Information Security of APF Engineering College of the Armed Police Force Xi'an China Key Laboratory of Computer Network and Information Security of the Ministry of Education Xidian University Xi'an China

ISBN: (纸本)9781424460526

A novel video steganography scheme based on motion vectors and linear block codes has been proposed in this paper. Our method embed secret messages in the motion vectors of cover media during the process of H.264 compressing. Linear block codes has been used to reducing the modification rate of the motion vectors. The proposed steganographic scheme is not only has lowly computational complexity, but also has highly imperceptible to human being. Furthermore, the secret information can be extracted directly without using the original video sequences. Experiments are designed to prove the feasibility of the proposed method. Experimental results show that our proposed scheme can embed large amounts of information and can maintain good video quality as well. © 2010 IEEE.

关键词： Steganography

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Attribute-Based Signature with Policy-and-Endorsement Mechanism

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Journal of computer Science & Technology 2010年第6期25卷 1293-1304页

作者：王怀习朱岩冯荣权 Stephen S.Yau LMAM School of Mathematical SciencesPeking University Electronic Engineering Institute Institute of Computer Science and Technology Peking University Key Laboratory of Network and Software Security Assurance (Peking University) Ministry of Education Information Assurance Center and School of Computing Informatics and Decision Systems Engineering Arizona State University

In this paper a new signature scheme,called Policy-Endorsing Attribute-Based Signature,is developed to correspond with the existing Ciphertext-Policy Attribute-Based *** signature provides a policy-and-endorsement *** this mechanism a single user,whose attributes satisfy the predicate,endorses the *** signature allows the signer to announce his endorsement using an access policy without having to reveal the identity of the *** security of this signature,selfless anonymity and existential unforgeability,is based on the Strong Diffie-Hellman assumption and the Decision Linear assumption in bilinear map groups.

关键词： cryptography fine-grained access control attribute-based signature policy-and-endorsement selfless anonymity existential unforgeability

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Group key management using proxy re-encryption for dynamic networks

Group key management using proxy re-encryption for dynamic n...

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2nd International Workshop on Education Technology and computer Science, ETCS 2010

作者： Zhang, Minqing Wu, Xuguang Han, Yiliang Yang, Xiaoyuan Key Laboratory of Network and Information Security of APF Engineering College of APF China Department of Computer Science and Technology Xi'an Jiaotong University Xi'an China

ISBN: (纸本)9780769539874

Decentralized group key management mechanisms offer beneficial solutions to enhance the scalability and reliability of a secure multicast framework by dividing the whole group into subgroups. However, many of the previous decentralized solutions require the trust key distribution center, or don't exploit the broadcast nature of wireless communication. In the study, a novel group key management scheme is proposed, which employs decentralized group membership, doesn't relay on the trust center, and makes use of the wireless broadcast nature to efficiently accommodate dynamic group changes. The main contributions are: (1) we extend a proxy re-encryption to multi-hop environment, and then develop a distributed protocol for key distribution;(2) in local group communication, we use multi-recipients encryption to broadcast key information reducing communication cost;(3) we analyze the proposed scheme with the previous schemes and the analysis result indicates that the proposed scheme has advantages with regard to the rekeying cost, storage overhead and computation efficiency. © 2010 IEEE.

关键词： Multicasting

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Conductivity of ZnS: Mn nanocrystal layers with various Mn Ion concentrations

Conductivity of ZnS: Mn nanocrystal layers with various Mn I...

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2010 IEEE International Conference on Semiconductor Electronics, ICSE 2010

作者： Ab Rahman, Mohd Syuhaimi Mohd Arif, Noor Azie Azura Ehsan, Abang Annuar Computer and Network Security Department of Electrical Electronic and Systems Engineering Malaysia Photonics Laboratory Institute of Micro Engineering and Nanoelectronics Faculty of Engineering and Built Environment 43600 UKM Bangi Selangor Malaysia

ISBN: (纸本)9781424466092

Transition metal-doped ZnS materials have received broad attention due to their well-known performance in electronics and optics. It has been observed previously by other researchers that Mn is one of interesting dopant. This dopant inside of ZnS offers a feasible means of fine tuning band gap. Because of this property, we interested to study the effect on electrical part. Hence, the aim of this work is discussed in term of electrical dark conductivity and photoconductivity of ZnS: Mn. Zn(1-x)MnxS samples with various x values (0.05≤ × ≤ 0.35) are synthesized by using sol gel spin coating method. Surface morphology and I-V characteristics of the samples are investigated by using FE-SEM and dc electrical measurement with and without UV exposure. It is found that the average diameters are between 25 and 27 nm. The increase of Mn site doping concentration leads to an increase of the electrical dark conductivity and photoconductivity of the samples. Moreover, we have found that the current increases greater with the increment of Mn concentration by using UV source. © 2010 IEEE.

关键词： Zinc sulfide

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A tentative study on reconfigurable network model

A tentative study on reconfigurable network model

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International Conference on computer Application and System Modeling

作者： Li, Li Xu, Xiaoyan State Key Laboratory for Manufacturing Systems Engineering Key Laboratory for Intelligent Network and Network Security of Ministry of Education Xi'an Jiaotong University Xi'an 710049 China College of Computer Science Shaanxi Normal University Xi'an 710062 China

ISBN: (纸本)9781424472369

As a promising technology to improve network survivability, reliability and flexibility, autonomous reconfigurability is extremely important for modern information networks that usually respond to unforeseen events. In this paper, we mainly focus on autonomously reconfigurable network systems from the point of emergency response. Based on the features of reconfigurable network systems, we propose an effective autonomous reconfigurable network model. The autonomous reconfigurability mechanism is represented by a sensing-judging-responding process based on the control theory. Furthermore, we demonstrate how the autonomous reconfigurable mechanism works when facing fire emergency in intelligent building. © 2010 IEEE.

关键词： Intelligent buildings

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