一种抗攻击的网络加密算法研究Research on an anti-attack network encryption algorithm
万伟
摘要(Abstract)：
DES网络加密算法在对数据加解密过程中,存在密钥短和运算时间慢的弊端,受到攻击时容易被破解,安全性低。为此,提出基于DES和Feistel的网络加密算法。参考DES算法以及Feistel加密算法,将DES加密算法中的56位密钥扩展处理后得到128位密钥后分割成4轮,采用32位密钥改造算法对各轮密钥实施处理得到子密钥,对各轮中的32位明文和子密钥异或运算,依据运算结果采用Feistel加密算法进行轮函数运算,得到网络数据加密结果。将加密时密文的输出作为解密时的输入,将加密信息恢复成为明文信息,实现网络数据的解密。实验证明所提算法加密效率高,可有效抵抗对网络节点发起的攻击,安全性高。
关键词(KeyWords)： 网络加密;密钥;密文;明文;轮函数;DES算法;Feistel算法
基金项目(Foundation): 广东省自然科学基金项目(S2013040012898)~~
作者(Author): 万伟
DOI: 10.16652/j.issn.1004-373x.2018.20.007
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