基于混沌和WEP的无线传感器网络加密研究  

Encryption of Wireless Sensor Networks Based on Chaos and WEP

作　　者：卢政桥 LU Zheng-qiao(Aero Engine Control System Institute of China,Wuxi,Jiangsu 214063,China)

机构地区：[1]中国航发控制系统研究所软件部

出　　处：《计算机科学》2019年第B06期362-364,391,共4页Computer Science

摘　　要：无线传感器网络是一个易受监听和干扰的开放系统,传感器节点的CPU计算速度、字长和存储空间有限,无法像pc级那样执行运行成本较大的加密算法,而运行成本较低的WEP、THIP等无线网加密算法已被证实存在密钥强度等问题。文中提出了一种基于WEP和混沌序列结合的加密协议,通过混沌序列作为子密钥的生成算法,可以在不增加时间复杂度和空间复杂度的情况下,同时利用混沌序列映射提高密钥随机性,回避WEP协议的密钥重复问题,增加破译的难度。Wireless sensor network is an open system which is easy to be monitored and disturbed.The CPU of sensor nodes has limited computing speed,word length and storage space.It is impossible to execute the encryption algorithm with high running cost like PC level.The encryption algorithm of wireless network such as WEP and THIP with low running cost has been proved to have the problem of key strength and so on.This paper proposes an encryption protocol based on the combination of WEP and chaotic sequence.By using chaotic sequence as a sub-key generation algorithm,the key randomness can be improved by using chaotic sequence mapping without increasing the time complexity and space complexity,avoiding the key duplication problem of WEP protocol and increasing the difficulty of deciphering.

关 键 词：混沌序列 嵌入式 加密 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]