网络编码在网络安全中的应用

网络编码的思想在1999年由杨伟豪和张珍首次提出，由Ahlswede等人进一步发展和扩充，安全的网络编码也随即提出。蔡亍和杨伟豪首先针对单信源有向无圈网络给出了安全网络编码的定义和模型，其他研究者也各自提出了不同的安全模型，如J P Vilela提出了轻量级安全的网络编码，K Bhattad提出了弱安全的网络编码等，另外还有抗拜占庭攻击的网络编码。网络编码理论亦在网络纠错中得到了应用，杨伟豪和蔡宁推广了经典纠错码，引入了网络纠错码，杨胜豪在杨伟豪和蔡亍研究的基础上，研究了线性网络编码的重量性质。

Applications of Network Coding in Network Security

The concept of network coding was first introduced by R W Yeung and Z Zhang in 1999. It was fully developed by Ahlswede et al. Later secure network coding was introduced, and N Cai and R W Yeung developed the concept and model of secure network coding for directed acyclic network. But for different specialties people gave different models for secure network coding. For instance, J P Vilela introduced fight weight secure network coding, and K Bhattad introduced weakly secure network coding When considering the practical secure network, we must think over the network coding that resists active attack, that is to say resists Byzantine attack. In this paper we also introduce such kind of network coding. On the other hand, researchers have lots of results in network error correction using network coding. R W Yeung and N Cai firstly generalize results in classical error correction codes and bring forward the network error correction codes to correct the errors of transmission; later, S H Yang develops weight characters of network error correction for linear network coding.