Secure and efficient metro-access network using network coding

This paper proposed a secure and efficient metro-access network scheme which combines network coding and source encryption to break the transport limitation of metro access networks. The proposed scheme provides higher throughput over the bottleneck links and prevent wiretap and modification attack at the same time. What´s more, the number of message to be encrypted is only half of the existing coding vector encryption scheme in traditional butterfly topology, and it could be even less in some other topologies.