网络编码在窃听网络中的应用  

Application of Network Coding in Wiretap Network

作　　者：曹张华[1] 吉晓东[1] 刘敏[1] 

机构地区：[1]南通大学电子信息学院,南通226019

出　　处：《计算机科学》2013年第10期144-147,共4页Computer Science

基　　金：国家自然科学基金项目(61174065);江苏省高校自然科学研究面上项目(10KJB510020);南通大学项目(03080411)资助

摘　　要：在窃听者窃听能力受限的网络中使用网络编码传输数据时,将网络编码允许中间节点混合收到的数据组这一特点与传统密码学中一次一密的思想相结合,提出了一个基于线性网络编码的有效对抗窃听攻击的安全通信方案。该方案无需秘密信道传输密钥,同时网络容量的使用率达到n-1/n。而且,当网络编码的系数域足够大时,该保密通信方案使用随机网络编码实现安全通信的概率趋于1。Focusing on the issue of secure communication on a wiretap network where a wiretapper can eavesdrop a limi-ted number of links,we proposed a secure communication scheme based on linear network coding. The key idea of our scheme is to combine the ability of network coding that allows intermediate nodes to mix information from different data flows with one time pad. Further, the presented scheme achieves secure communication without employing a secrecy channel and the utilization of network capacity is up to n-1/n.Moreover, we showed that if the efficient domain is large enough, the probability of achieving secure communication with random linear network coding tends to 1 in our scheme.

关 键 词：窃听者 网络编码 组播 网络安全 随机网络编码 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]