Malicious peer identification using both goodness and wickedness metrics

In P2P networks, trust management is a key tool to minimize the impact of malicious nodes. Eigen Trust is one of the most powerful distributed reputation management systems focused on P2P file-sharing applications. It is the theoretical ground of other systems. However, any of them gives an appropriate importance to the wickedness of the nodes. In this paper, Pos&Neg EigenTrust is proposed. Considering unauthentic transactions in more depth, it is able to obtain a blacklist containing the identity of the malicious nodes. Therefore, Pos&Neg EigenTrust is able to drastically reduce the amount of unauthentic transactions on the network.