无线Mesh编码网络中污染攻击的解决方案  

A Solution for Pollution Attacks in Network Coding for Wireless Mesh Network

作　　者：田园[1] 刘建伟[1] 毛剑[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191

出　　处：《中国电子商情（通信市场）》2010年第6期88-94,共7页

摘　　要：针对无线Mesh编码网络中污染攻击问题，提出了包括两个方案的解决方案。方案一采用同态MAC抵御污染攻击，通过同态MAC函数验证数据包的完整性。同态函数的线性特性极大减少了网络节点计算量。但是由于验证过程频率高，而频繁的验证会降低网络性能，本章又提出了无线Mesh网络中概率可变的节点合作方案。该方案通过节点问的合作，降低数据包验证次数，并且确保污染数据包在两跳内被节点验证后丢弃。A solution to prevent pollution attacks in network coding for wireless mesh network is presented. This solution include two schemes. The first scheme based on homomorphic MAC. In the scheme, nodes verify integrity of the received coded packets using homomorphic MAC function. The scheme reduces computation of nodes compare with other homomorphic schemes. However, it also reduces network performance due to high frequent verifications. A nodes cooperation with variable probability scheme which decreases the number of verifications with cooperating nodes is proposed to solve this problem. The scheme not only improves network performance, but ensures polluted packets are verified and dropped within two hops.

关 键 词：无线MESH网络 网络编码 污染攻击 

分 类 号：TN915.04[电子电信—通信与信息系统]