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3rd IEEE International Conference on Intelligent networking and Collab.rativeSystems, INCoS 2011

作者： Fan, Kai Wang, Yue Li, Hui Ministry of Edu. Key Lab. of Computer Network and Information Security Xidian University Xi'an China Xi'an Branch Shaanxi Telecom Ltd. Xi'an China

ISBN: (纸本)9780769545790

Abuse-freeness is one of the most interesting new problems in the electronic payment security today. It is an effective supplementary for the fairness. It is confused for researchers how to get real abuse-freeness in electronic payment. An abuse-freeness electronic payment protocol for real goods is proposed in this paper. The protocol has the abuse-freeness by introducing a trusted third party and using the concurrent signature and it has prevented both sides in payment to originate and terminate protocol maliciously. At the same time fairness and security are also achieved in the proposed protocol. © 2011 IEEE.

关键词： Contracts Equations Forgery Manuals Process control Protocols security abuse-freeness abuse-freeness electronic payment protocol concurrent signature concurrent signature digital signatures electronic money electronic payment protocol electronic payment security trusted third party trusted third party (TTP)

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Forward secure proxy blind signature scheme

Forward secure proxy blind signature scheme

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3rd IEEE International Conference on Intelligent networking and Collab.rativeSystems, INCoS 2011

作者： Fan, Kai Wang, Yue Li, Hui Ministry of Edu. Key Lab. of Computer Network and Information Security Xidian University Xi'an China Xi'an Branch Shaanxi Telecom Ltd. Xi'an China

ISBN: (纸本)9780769545790

There is no forward security in any proxy blind signature schemes today. The lack of forward security will impact the system security tremendously if the key is stolen. To avoid such a security problem this paper proposes a forward secure proxy blind signature scheme which employs the key evolution mechanism in a newly proposed proxy blind signature scheme. The security of proxy blind signature and the forward security are both analyzed in the proposed scheme. Even if the current signature key is compromised, the attacker cannot forge signatures as if they had been generated before the key leakage. That is to say, signatures signed before the leakage are still valid. © 2011 IEEE.

关键词： Authentication

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A new abuse-free fair electronic payment protocol

A new abuse-free fair electronic payment protocol

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5th International Conference on information Assurance and security, IAS 2009

作者： Fan, Kai Wang, Yue Li, Hui Ministry of Edu. Key Lab. of Computer Network and Information Security Xidian University Xi'an Shaanxi China Xi'an Branch of Shaanxi Telecom Ltd. Xi'an Shaanxi China

ISBN: (纸本)9780769537443

To solve the problem of the abuse in electronic payment protocols, a new abuse-free fair electronic payment protocol is proposed in this paper. The proposed protocol solves the problems in Parks' protocol and furthermore it solves the abuse using off-line trusted third party (TTP). The security and fairness are also possessed in the protocol. © 2009 IEEE.

关键词： Parks

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security analysis of the kerberos protocol using BAN logic

Security analysis of the kerberos protocol using BAN logic

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5th International Conference on information Assurance and security, IAS 2009

作者： Fan, Kai Li, Hui Wang, Yue Ministry of Edu. Key Lab. of Computer Network and Information Security Xidian University Xi'an Shaanxi China Xi'an Branch of Shaanxi Telecom Ltd. Xi'an Shaanxi China

ISBN: (纸本)9780769537443

Kerberos protocol is a famous identity authentication protocol and it is widely used in the network as a standard. But there is still not a strict proof of it base on the Formal method. That is very nervous for the users. So a security analysis of the Kerberos protocol using BAN logic is proposed in this paper, and the reliability, practicability and security of Kerberos protocol are proved. © 2009 IEEE.

关键词： Formal methods

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A link analysis for passive UHF RFID system in LOS indoor environment

A link analysis for passive UHF RFID system in LOS indoor en...

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2008 International Conference on Wireless Communications, networking and Mobile Computing, WiCOM 2008

作者： Hong, Gang Wang Chang, Xing Petitioner Chang, Hua Zhu Ministry of Education Key Lab. Computer Network and Information Security Xidian University Xi'an China

ISBN: (纸本)9781424421084

A link analysis model for passive UHF RFID system in LOS indoor environment is developed and demonstrated. Using this model, the power received by tag and the read performance are investigated. The multipath fading and RMS delay spread for UHF RFID system are analyzed by a 5-ray model with different polarization, e.g., horizontal polarization, vertical polarization, and circular polarization. A practical test is developed on an indoor balcony of an office building. In addition, the electric field environment is simulated using the tool of Ansoft HFSS for the analysis of multipath degradation. The results of theoretical analysis, simulation and test are almost conformable, and the small scale fading and the field nulls are observed. Multipath degradation affects the UHF RFID system so much on read performance, and it is still a key limitation on system performance. More research on anti-multipath interference should be developed, e.g., high gain antenna, high sensitivity tag and reader receiver, and more effective protocols, and so on. © 2008 IEEE.

关键词： Time delay

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Full rate and full diversity STBC in decode-and-forward relay systems

Full rate and full diversity STBC in decode-and-forward rela...

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2010 International Conference on Communications and Intelligence information security, ICCIIS 2010

作者： Wang, Yong Li, Hui Ministry of Education Key Lab. of Computer Network and Information Security School of Telecommunications Engineering Xidian University Xi'an China

ISBN: (纸本)9780769542607

Diversity techniques are very effective tools to increase signal reception quality in Rayleigh fading channels. A novel space-time block coding method for cooperative relay networks is proposed which guarantees full diversity for any number of mobile relays with minimal delay, provided that few bits of feedback from the destination to the source and the relays are availab.e. As in the case of orthogonal space-time block codes, all transmitted symbols are separately decoded both in the relays and the destination. Therefore, decoding complexity is linear. In our proposed scheme, larger number of codes can be generated for improved coding gain. The performance of the proposed scheme is investigated for cooperative communication. It is shown that the new approach provides SNR improvement, and it is more resilient to feedback errors compared to the antenna selection technique on the basis of same number of feedback bits. © 2010 IEEE.

关键词： Cooperative communication

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Improvements of the definition of image fidelity

Improvements of the definition of image fidelity

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MMM2006: 12th International Multi-Media Modelling Conference

作者： Yin, Zhong Hai Wang, Kun Jian, Jianfeng Zhou, Lihua Ministry of Edu. Key Lab. of Computer Network and Infor. Security Xidian Univ. Xi'an 710071 China School of Science Air Force Engineering Univercity Xi'an 710077 China

ISBN: (纸本)1424400287

The defect of existing fidelity definition is discussed, by using this definition, it is found that two obviously different image can be determined to be approximate or the same. According to the defect, an improved fidelity definition is presented. The difference and relation between the two definitions are discussed and the analytic expression for deriving one definition from the other is also presented. © 2006 IEEE.

关键词： Image analysis

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Improving efficiency of security schemes in automated trust negotiation

Improving efficiency of security schemes in automated trust ...

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2nd International Workshop on edu.ation Technology and computer Science, ETCS 2010

作者： Liu, Bailing Lu, Hongwei Zhao, Yizhu Ge, Feng College of Computer Science and Technology Huazhong University of Science and Technology Wuhan China Key Lab. of Information Network Security Ministry of Public Security Shanghai China

ISBN: (纸本)9780769539874

Automated trust negotiation (ATN) is an approach that establishes mutual trust between strangers wishing to share resources or conduct business by gradually requesting and disclosing digitally signed credentials. When designing security schemes and systems in ATN, the negotiation efficiency, which is a desirable property, is not considered sufficiently. In this paper, a useful model of P.E. evaluation is proposed to enhance negotiation efficiency by improving the efficiency of security schemes used in ATN. The useful model of P.E. evaluation is responsible for choosing a most appropriate policy among several alternative policies that can advance a negotiation at the same time, which makes the negotiation more efficient. © 2010 IEEE.

关键词： Efficiency

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Improvement on WLAN multicast key management protocol

Improvement on WLAN multicast key management protocol

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2008 International Conference on Computational Intelligence and security, CIS 2008

作者： Huixian, Li Liaojun, Pang Dept. of Comput. Sci. and Engineering Northwestern Polytechnical Univ. Xi'an 710072 China Ministry of Edu. Key Lab. of Computer Networks and Information Security Xidian University Xi'an 710071 China

ISBN: (纸本)9780769535081

Multicasting is an important business in the field of the Wireless Local Area network (WLAN). The access point (AP) usually has to seed the same message to each station (STA) of a specific group, and the multicasting is one of the most efficient communication ways. To assure the validity of the entity and the privacy of the message, we should first solve the problem of the multicast key secure distribution. In WLAN security standards, LEEE802.11i and Chinese WLAN Authentication and Privacy Infrastructure (WAPL), multicast key announcement protocols are inefficient. In this paper, a new multicast key distribution protocol is proposed, and it can be used to substitute the multicast key management protocol in IEEE802.11i or WAPL Analyses show that the proposed protocol can achieve all functional requirements of WLAN, and is more efficient than that in IEEE802.11i or WAPL. © 2008 IEEE.

关键词： Multicasting

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A(k,n) Threshold Nominative Proxy Signature Scheme for Electronic Commerce

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Journal of China University of Mining and Technology 2006年第4期16卷 470-474页

作者： XIN Xiang-jun WANG Mei-zhi XIAO Guo-zhen The Ministry of Edu. Key Lab. of Computer Network and Infor. Security Xidian University Xi＇ an Shanxi 710071 China Department of lnformation and Computing Science Zhengzhou University of Light Industry Zhengzhou Henan 450002 China Department of Math. ＆ Physics Zhumadian Institute of Education Zhumadian Henan 463000 China

By using the Lagrange interpolation formula and the technology of signature of equality, a (k, n) threshold nominative proxy signature scheme is proposed, where an original signer delegates his (her) signing power to a proxy, who generates a nominative signature on behalf of the original signer and only k or more active verifiers in the n nominees (verifiers) nominated by the proxy signer can verify the signature signed by the proxy. If necessary, these (k or more) active nominees (verifiers) can prove its validity to a third party. In this scheme, the secret shares are generated and en- crypted by the original signer. At the same time, the ciphertexts of the secret shares are used as parts of the signature. Then, the secret shares need not be sent to the nominees (verifiers) secretly. The ordinary nominative proxy signature can be viewed as a (1, 1) threshold nominative proxy signature. The ordinary nominative proxy signature can be viewed as a special case of a (k, n) threshold nominative proxy signature. According to the security analysis of this paper, it is found that our scheme is secure against a proxy signing key forgery attack and existential forgery on an adaptive chosen message attack.

关键词： digital signature nominative signature proxy signature

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