云计算环境下的DES对称加密算法优化研究  

Optimization of Des symmetric encryption algorithmin cloud computing environment

作　　者：朱启成 ZHU Qi-cheng(Department of computer information engineering,Anhui Institute of industry and trade,Huainan 232001,Anhui,China)

机构地区：[1]安徽工贸职业技术学院计算机信息工程系,安徽淮南232001

出　　处：《贵阳学院学报（自然科学版）》2021年第2期11-15,共5页Journal of Guiyang University：Natural Sciences

基　　金：2019年度安徽省高等学校省级质量工程项目“《大中型企业园区网络组建》精品线下开放课程”(项目编号:2019kfkc261)。

摘　　要：在云计算背景下,社会对信息安全的要求越来越高,对DES对称加密算法进行优化,利于保障信息获取的安全性。本次研究在DES对称加密算法原理的基础上,提出了两种DES对称加密优化算法,分别为三重DES对称加密算法,以及线性优化的DES对称加密算法。通过对DES对称加密算法原理的研究,提出三重DES对称加密算法,且利用对称加密算法中的AES算法,对DES对称加密算法进行线性优化。研究结果表明,改进后的三重DES对称加密算法密钥长度为传统DES对称加密算法密钥长度的3倍,其抗穷举攻击的能力大大增强,且加密和解密效果的安全性都有所提升;此外,对DES算法进行线性优化以后,其明文敏感性、密钥敏感性以及抗攻击性能都比较强。In the context of cloud computing,the society has higher and higher requirements for information security.The optimization of Des symmetric encryption algorithm is conducive to ensuring the security of information acquisition.Based on the principle of Des symmetric encryption algorithm,this paper proposes two kinds of Des symmetric encryption optimization algorithm,which are triple des symmetric encryption algorithm and linear optimization des symmetric encryption algorithm.Based on the study of the principle of Des symmetric encryption algorithm,a triple des symmetric encryption algorithm is proposed,and the AES algorithm of symmetric encryption algorithm is used to optimize the des symmetric encryption algorithm linearly.The research results show that the key length of the improved triple des symmetric encryption algorithm is three times of that of the traditional des symmetric encryption algorithm,and its anti exhaustive attack ability is greatly enhanced,and the security of encryption and decryption effect is improved;in addition,after the linear optimization of DES algorithm,its plaintext sensitivity,key sensitivity and anti attack performance are relatively strong.

关 键 词：云计算 DES算法 加密 对称算法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]