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Office认证机制中密钥导出函数安全性分析
Authors
吴鸿伟
周君
+3 more
李晓潮
邹梅
郭东辉
Publication date
20 April 2012
Publisher
Abstract
微软Office2007及其后续版本采用ECMA-376的文件加密格式,其安全性主要通过用户认证和文件加密实现,而密钥导出算法是整个安全机制的核心。为此,研究ECMA-376密钥导出算法的安全性,利用Game-Playing技术计算该密钥导出算法与随机函数的不可区分优势的上限。通过该理论和攻击实例对Office安全性进行分析,结果表明,当用户口令字符长度大于6时,Office具有一定的安全性
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Last time updated on 16/06/2016