Network coding remarkably improves network performance and transmission efficiency for multi-cast. Nevertheless, as its inherent defect, it is vulnerable to pollution attacks, bringing in a severe decrease of the network performance. In the proposed work, a novel approach is put forwarded, which can rapidly identify and isolate the malicious nodes from the networks as early as possible. On the one hand, we raise a secure infrastructure, on the other hand, we advocate a secure transmission protocol to verify every received packet. Theoretical analysis and experimental results demonstrate that the proposed scheme has the optimal performance in terms of security, network delay and network throughput.

网络编码显着提高组播的网络性能和传输效率。然而，作为其固有的缺陷，它容易受到污染攻击，导致网络性能严重下降。在所提出的工作中，提出了一种新颖的方法，可以尽早快速地从网络中识别和隔离恶意节点。一方面，我们提出了一个安全的基础设施，另一方面，我们提倡一个安全的传输协议来验证每个接收到的数据包。理论分析和实验结果表明，所提出的方案在安全性、网络延迟和网络吞吐量方面具有最佳性能。