A Trust Chain Assessment Method Based on Blockchain for SDN Network Nodes

The SDN node can complete the forwarding task efficiently and reliably does not attract enough attention. A new method called TrustBlock was proposed, which introduces the SDN node trust evaluation and block chain to ensure the trust value authenticity, irreparability and openness. The weight of each evaluation attribute is determined by the entropy method, which avoids the problem that the subjective judgment method is not adaptable to the weight setting. Simulation results show that TrustBlock can effectively identify untrusted nodes in SDN networks.