摘要
SNOW族算法是目前序列密码算法设计的一个主流方向。针对SNOW族算法现有的安全漏洞,该文以最具代表性的SNOW 2.0算法为研究对象,采用随机性测试方法对其多个域上模加、非线性S盒以及线性反馈移位寄存器(LFSR)3个核心部件进行分析,提出基于随机S盒和高性能LFSR等部件改进的多套改进方案,有效提升SNOW族算法的安全性和实现性能。
The SNOW family is a main trend of the design of the stream cipher. Because of the security vulnerabilities of the SNOW family~ this paper selects SNOW 2.0 algorithm which is the most representative of the family as a research object. Three core components of SNOW 2.0 that are mold addition on more than one domain, nonlinear S-box and Linear Feedback Shift Register （LFSR） are analyzed using statistical tests. Several improved algorithms are proposed based on improving random S-box and improving high performance LFSR. The result enhances effectively the security and performance of SNOW family.
出处
《电子与信息学报》
EI
CSCD
北大核心
2014年第1期82-87,共6页
Journal of Electronics & Information Technology
基金
国家863计划项目(2011AA70110016)资助课题
