DES加密算法的改进方案  

An Improvement Scheme of DES Encryption Algorithm

作　　者：黄伟 HUANG Wei(Guangzhou Vocational and Technical University of Science and Technology,Guangzhou Guangdong 510550,China)

机构地区：[1]广州科技职业技术大学,广东广州510550

出　　处：《信息安全与通信保密》2022年第7期100-105,共6页Information Security and Communications Privacy

基　　金：广州科技职业技术大学2021年度自然学科类项目课题“适用于边缘计算的创新性数据加密方案”(No.2021ZR11)。

摘　　要：对称密码体系和非对称密码体系各有优缺点。探索一种两者结合的,既保留各自优点,又能最大限度地消除各自缺点的混合密码体系,对现代网络通信的高效性和安全性有着重要意义。使用非对称密码保护对称密码密钥是一种可行的方案。在此方案下,攻击者无法绕过对非对称密码密钥的破解而直接攻击对称密码的密文。这一方案的提出和论证,表明各种密码体系可以混合使用,取长补短,互为加固。Symmetric cryptosystem and asymmetric cryptosystem have their own advantages and disadvantages.It is of great significance for the efficiency and security of modern network communication to explore a hybrid cryptosystem that combines the two,which can not only retain their respective advantages,but also eliminate their shortcomings to the greatest extent.It is a feasible scheme to use asymmetric cryptography to protect symmetric cryptographic keys.In this scheme,the attacker cannot bypass the cracking of the asymmetric cryptographic key and directly attack the ciphertext of the symmetric cipher.The proposal and demonstration of this scheme indicate that various cryptosystems can be mixed,learn from each other and reinforce each other.

关 键 词：加密算法 对称密码 非对称密码 密码分析 信息安全 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]