“…Because network nodes are not managed uniformly, a lot of nodes are able to enter or leave the network, so that some illegal nodes may provide the resources with errors or virus and even make fraudulent practices, making people feel unsafe for online activities and fail to obtain reliable and effective services [1]. In this way, every node in the network can't share message and normally interact with every other, which greatly damage the normal network environment and kill people's enthusiasm for applying the Internet [2,3].…”