基于动态策略的S盒设计研究

Design and Research of S-Box Based on Dynamic Strategy

分组密码作为信息安全应用的主流加密方法,在无线传感器网络中也得到了广泛应用。而S盒作为分组密码算法的核心模块之一,其设计好坏直接影响着整个密码算法。为了在有限的资源下,提高分组密码算法的安全强度,对分组密码算法以及S盒构造设计进行了深入的分析研究,结合Feistel架构和S盒重构的思想,提出了动态S盒的设计方案,并对其进行了相关分析验证。结果表明,经过该设计,安全性能确实有所提高。

Block cipher encryption is the mainstream method of information security application, and it has been widely used in wireless sensor networks. S-box which is one of the core modules of block cipher algorithm has a direct and significant impact on the entire cipher algorithm. In order to improve the secure strength of the block cipher algorithm with the limited resource, a lot researches on it and analyses of S-box structure design had been done, then the design scheme of dynamic S-box which can improve the security of S-layer by learning from the architecture of Feistel and the reconstruction of S-box came out. The result of the test showed that the project really can work on the increasing of security.