一种抗拜占庭攻击的随机网络编码

A Random Network Coding Against Byzantine Attack

网络编码自提出以来得到了巨大的发展,并且在许多方面被广泛应用。网络安全是网络编码的重要的应用领域之一。安全网络编码最主要的两方面就是防窃听和防拜占庭攻击,实质上就是防搭线窃听与网络纠错。本文构造了一种基于范德蒙德行列式的随机网络编码,并通过添加Target位的方法来实现抗拜占庭攻击;对于同时具备窃听和修改能力的攻击者,设计了一种改进的借助数据位的Target位构造方法;针对攻击者可能仅修改部分数据的具体情况给出了一种变步进多Target位的解决方案,即通过构造步进函数的方式来选取多个数据,构造多个Target位来提高数据安全性,并且通过部分数据验证了其可行性。

Since network coding has been proposed,it has developed greatly, and has been widely applied.Security of network coding is an important application fields. Secure network coding has two major respects, anti-eavesdropping and anti-Byzantine attacks, essentially, is anti-wiretapping, and network error correction. In this paper, we based on Fandemengde determinant,propose a solution by constructing a Hash function and adding a target bit against Byzantine attack, and inhance the security by improve the target bit,and propose a solution of variable stepper and multiple target bit,by construct stepper function and build several target bits,against that the attacker may modify a little data bits, and prove with some experiment data.