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an attack to multisignature schemes based on discrete logarithm
Authors
任奎
王贵林
韩小西
鲍丰
Publication date
1 January 2004
Publisher
Abstract
作为一种特殊的数字签名,多重签名由签名群体中的所有成员合作对给定的消息进行处理后形成整个群体的签名;而验证者只需要利用群体的唯一公钥即可对签名进行有效性检验.Harn和Ji等人提出了两个基于离散对数的多重签名方案.但陆浪如等指出了这两个方案的一个共同缺点:若部分成员合谋作弊,则群体所产生的多重签名也可以解释为由其他诚实成员所产生的多重签名.这样,在必要时,作弊成员就可以否认他们与某些多重签名有关.为了克服这一缺点,陆浪如等对这两个多重签名方案的密钥生成部分提出了两种改进.该文给出一种攻击方法以表明陆浪如
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Institute Of Software, Chinese Academy Of Sciences
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Last time updated on 30/12/2017