Abstract
The trust management in P2P networks allows to establish the trust relationships among the peers and decide whether the considered transaction will be realized. It tries to ensure safety in the extremely unsafe environments of P2P networks.
In this paper we focus on the formal description of requirements of trusted P2P networks and we propose the model which is able to measure them. Our model should be adaptable to the previously published methods and allows to compare them.
The fundamentals of our model are trust matrices which record the trust relationships between peers. We define similarity between trust matrices for purpose of comparison of different management systems. On the basis of this similarity we propose the criterion which is able to measure successfulness of trust management.