基于REESSE3+算法的改进算法

New Improved Algorithm Based on REESSE3+

REESSE3+算法是苏盛辉教授于2014年提出的一个8轮迭代的分组密码算法。本文在REESSE3+算法的基础上做出了一些改进,提出了一种新的改进算法。由于REESSE3+算法受到了来学嘉教授提出的IDEA算法的启发,采用了3个不相容的群运算来保证其安全性,因此采用来学嘉教授提出的马尔科夫密码模型来对REESSE3+(16)算法和16位输入的改进算法进行比较。通过实验发现,在面对差分攻击时,16位输入的改进算法比原REESSE3+(16)算法更加安全。

REESSE3+is an8rounds block cipher algorithm proposed by Professor Su in2014.Based on the REESSE3+,this paper made some improvements.Since REESSE3+is inspired by IDEA which was proposed by Professor Lai,three incompatible group operations were used to ensure their security,and we used the Markov model proposed by Professor Lai to make a comparison between REESSE3+(16)and the16bit input of improved algorithm.Through experiments,we found that in the face of differential crypt analysis,the16bit input of improved algorithm is more secure than the original REESSE3+(16).