摘要
该文对Rijndael算法中为算法提供安全性的唯一非线性结构—S盒的代数性质进行了深入的研究,从S盒的七种重要代数性质考察了算法的安全性,并且采用插值法推导出了S盒的代数表达式,分析了S盒两种详细的代数结构,最后指出了算法中可能存在的安全隐患。
The algebra properties of the S -box,which is the only nonlinear structure in Rijindael algorithm and accounts for the security of the algorithm,are analyzed in detail in this paper.The security of the algorithm is studied by investigating on seven important properties of the S -box.The algebraic expression of the S -box is derived by interpolation method.Detail algebraic constructions of the S-box are analyzed and the existence of the hidden trouble on the algorithm is also put forward.
出处
《计算机工程与应用》
CSCD
北大核心
2003年第31期45-47,63,共4页
Computer Engineering and Applications
基金
国家973重点基础研究发展规划项目(编号:G1999035803)
"十五"国家密码发展基金
