Rijndael算法中S_box及其改进方案

信息安全技术在网络银行,电子商务,电子现金,证书认证等领域发挥着极其重要的作用。而Rijndael作为高级加密标准,必成为信息安全的核心技术之一。本文介绍了Rijndael算法的原理与实现,研究了S_box的构造原理以及它的迭代输出周期性,指出S_box迭代输出周期过短的缺陷。提出了构造S_box的改进方案使其具有更好的代数性质以及更强的抗代数攻击的能力。

An improved method of Rijndael S_box

Information security technology plays a very important role in the area of network bank,e-commerce,electronic cash,authentication certificate,etc.Rijndael as advanced encryption standard,will become the core technology of information security.This paper introduces the principle and the realization of Rijndael algorithm,studies the construction principle and the iterative output periodicity of S_box.Points out the S-box has the characteristics that periods of iterative-output is too short.It proposes the S-b...