一种基于门限思想的窃听信道网络保密方案

网络编码可使网络通信的容量达到上界,使网络的利用率得到极大的提高.Cai等基于网络编码给出了窃听信道通信网络（CSWN）模型,将信息安全问题引入到网络编码中.文章借鉴密钥共享理论中的门限理念,用密钥共享体制中分配重构主密钥的方式来加密和恢复消息,得到了一个可达到完善保密性要求的可行且高效的编码方法.

A Secure Scheme to Solve CSWM Problem Based on Threshold Idea

Network coding can achieve the upper bound of the network flow,and increase the network throughput dramatically.N.Cai and W.Yeung＇s proposal of the model of a communication system on a wiretap network introduced the question of information security to network coding.With the introduction of the threshold concept of the secret sharing theory,the encrypting and decrypting of messages were achieved through distribution and reconstruction of the master key which are used in the secret sharing system,hence the obtaining of a feasible and highly efficient coding method which meets the requirements of complete secrecy.