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Universally Composable Symbolic Analysis of group key exchange protocol

China Communications 2011年第2期8卷 59-65页

作者：张子剑祝烈煌廖乐健 School of Computer Science and Technology Beijing Institute of Technology

Canetti and Herzog have already proposed universally composable symbolic analysis(UCSA) to analyze mutual authentication and key exchange protocols. However,they do not analyze group key exchange protocol. Therefore,this paper explores an approach to analyze group key exchange protocols,which realize automation and guarantee the soundness of cryptography. Considered that there exist many kinds of group key exchange protocols and the participants’ number of each protocol is arbitrary. So this paper takes the case of Burmester-Desmedt(BD) protocol with three participants against passive adversary(3-BD-Passive) . In a nutshell,our works lay the root for analyzing group key exchange protocols automatically without sacrificing soundness of cryptography.

关键词： universally composable symbolic analysis universally composable mapping algorithm burmester-desmedt protocol group key exchange protocol

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Security Analysis of Broadcaster group key exchange protocols

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Wuhan University Journal of Natural Sciences 2006年第6期11卷 1577-1580页

作者： LI Li ZHANG Huanguo School of Software Wuhan University Wuhan 430072 Hubei China School of Computer Wuhan University Wuhan 430072 Hubei China

group key exchange protocols are basic protocols to provide privacy and integrity in secure group communication. This paper discusses the security of one type of group key exchange protocols and defines the kind of protocols as broadcaster group protocols. It points out two attacks on this kind of protocols. The first attack can be avoided by using fresh values in each action during one session of the group protocol. The second attack should be related with concrete application. It also proposes a dynamic key agreement protocol as an example of solutions at the last part of the paper.

关键词： group key exchange protocol broadcaster group protocols, dynamic security

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Formal Verification in 3oux Tripartite Diffie-Hellman protocol

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China Communications 2012年第3期9卷 153-163页

作者：祝烈煌张子剑王峰郭聪袁彩霞 Beijing Laboratory of Intelligent Information Technology School of Computer ScienceBeijing Institute of Technology Naval Academy of Armament Beijing University of Posts and Telecommunications

Security analysis of cryptographic protocols has been widely studied for many *** far as we know,we have not found any methods to effectively analyze group key exchange protocols for the three parties yet,which did not sacrifice the soundness of ***,Canetti and Herzog have proposed Universally Composable Symbolic Analysis(UCSA) of two-party mutual authentication and key exchange protocol which is based on the symmetric encryption *** scheme can analyze the protocols automatically and guarantee the soundness of ***,we discuss group key exchange protocol which is based on Joux Tripartite Diffie-Hellman(JTDH) using *** contribution is analyzing group key exchange protocol effectively without damaging the soundness of cryptography.

关键词： UCSA computationally sound JTDH group key exchange protocol

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