Cryptanalysis of efficient proxy signature schemes for mobile communication

查看全文 作　　者：LI [1,2,3]FaGen;SHIRASE [3]Masaaki;TAKAGI [3]Tsuyoshi

机构地区：[1]School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China;[2]Key Laboratory of Computer Networks and Information Security, Xidian University, Xi'an 710071, China;[3]School of Systems Information Science, Future University-Hakodate, Hakodate 041-8655, Japan

出　　处：《Science China(Information Sciences)》索引2010年第53卷第10期,共6页

基　　金：supported by the National Natural Science Foundation of China (Grant No. 60803133);the Key Laboratory of Computer Networks and Information Security of Xidian University (Grant No. 2008CNIS-02);Youth Science and Technology Foundation of UESTC 摘　　要：In a proxy signature scheme, an original signer is allowed to delegate his signing power to a designated person, called the proxy signer and the proxy signer is able to sign the messages on behalf of the original signer. Recently, Lu, Dong and Cao proposed two proxy signature schemes for mobile communication (see Sci China Ser F-Inf Sci, 2008, 51(2): 183–195). Although they proved that their schemes are secure in the random oracle model, we disprove their claim and show that their schemes are not secure. 关键词：代理签名签名方案移动通信密码分析随机预言模型 INF文件签名者科学

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Cryptanalysis of efficient proxy signature schemes for mobile communication

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