一种扩展的Rijndael算法及其DSP快速实现的研究

An extended Rijndael algorithm and its fast implementation on DSP

研究一种扩展的Rijndael算法的设计策略,重点研究了列混合变换及其逆变换的设计;在此基础上,研究列混合变换中字节模乘运算的实现算法,根据这种扩展算法加密轮的4个变换的特征,提出了两种快速实现方案。在DSP平台上实现该扩展算法的基础上,对该扩展算法的ANSI C代码进行综合优化,并取得良好的效果。另外,本文从雪崩效应角度分析了算法的安全性。

This paper studies the design strategies for an extended Rijndael algorithm, and focuses on MixColumns transformation and its inverse transformation. Based on these studies, this paper analyses the implementation of byte mod multiplication, and then according to the characteristics of the encryption rounds, this paper propose two fast implementing schemes. Based on its implementation on DSP platform, this paper synthetically optimize the resource code for the extended Rijndael algorithm and gain preferable result. Finally, this paper analyzes the security of this algorithm on Avalanche effect.