A new perturbation algorithm and enhancing security of SFLASH signature scheme

查看全文 作　　者：WANG [1,2]HouZhen;ZHANG [1,2]HuanGuo;GUAN [3]HaiMing;HAN [1,2]HaiQing

机构地区：[1]The Key Laboratory of Aerospace Information Security and Trusted Computing, Ministry of Education, Wuhan University, Wuhan 430072, China;[2]School of Computer, Wuhan University, Wuhan 430079, China;[3]Chinese Electronic Equipment System Corporation, Beijing 100039, China

出　　处：《Science China(Information Sciences)》索引2010年第53卷第4期,共9页

基　　金：supported by the National High-Tech Research & Development Program of China (Grant Nos.2006AA01Z442, 2007AA01Z411); the National Natural Science Foundation of China (Grant Nos. 60673071,6097115, 60970116) 摘　　要：This paper introduces the concept of noise factor and noise operation, and constructs a noise group. We present a new perturbation algorithm for enhancing security of multivariate public key cryptosystems (MPKCs). European Consortium SFLASH which derives from Matsumoto-Imai scheme is a fast signature scheme intended for low cost smart cards. It was broken with the differential cryptanalysis by Dubois et al. in 2007. Taking Matsumoto-Imai system as an example, security analysis shows that the new algorithm can powerfully demolish its potential mathematical properties of the public key, and effectively avoid differential cryptanalysis without lowering the effciency of the original algorithm. 关键词：数字签名方案安全性分析扰动算法差分密码分析经营理念欧洲联盟系数和智能卡

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A new perturbation algorithm and enhancing security of SFLASH signature scheme

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