混沌序列在安全网络编码算法中的应用研究

Research on application of chaotic sequence in security of network coding

为提高网络编码的安全性提出了一种在信源处使用混沌序列与信源信息相结合,在信宿处列表译码的安全网络编码算法。该算法使用改进型Logistic映射产生混沌序列对信源消息进行处理,传输过程保持原有网络编码体制不变,可以抵抗多种窃听和污染攻击。经过系统仿真及理论分析可知,该算法舍弃部分带宽来保证网络的安全性,以较小的开销达到了信息论安全的要求。最终实现了混沌序列在安全网络编码算法中的应用。

To improve the security of network coding, this paper presented a secure network coding algorithm. It combined chaotic sequence with source information and used list-decoding to sink. This algorithm adopted advanced Logistic map to gen- erate chaotic sequence in order to deal with the source information and the transmission process still kept the original network coding system. It not only can resist a variety of wiretapping attacks but also can resist pollution attacks. The system simulation and theoretical analysis confirm that this algorithm abandons part of bandwidth to ensure the security of network and achieves the information-theoretic security condition with minimum overhead. It finally realized the application of chaotic sequence in the secure network coding algorithm.