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网络编码打破了传统的独立比特不能再被压缩的传统理论,该理论指出在多播系统中,通过允许中间节点对数据进行编码组合,可以进一步的提高网络吞吐量。现今,虽然网络编码在抗搭线窃听、抗拜占庭攻击和网络纠错码等网络安全领域已展开应用,但仍需进一步发展。针对这一现象,这里对网络编码的安全问题进行综述并加以分析,同时针对网络编码较容易受到的一种攻击——网络污染攻击,指出全同态加密方案在解决该问题上的应用。
Network coding breaks the traditional theory that traditional independent bits can not be compressed anymore. This theory points out that in a multicast system, network throughput can be further improved by allowing intermediate nodes to encode and combine data. Today, although network coding has been applied in the field of cybersecurity such as anti-wiretapping, anti-Byzantine attacks and network error correction code, it still needs further development. In response to this phenomenon, the security problems of network coding are reviewed and analyzed here. In view of the attack of network coding which is more vulnerable to network pollution, this paper points out the application of the fully homomorphic encryption scheme in solving this problem.