Towards Reliable Trust Management in Insecure P2P Environments

The rapid growth of communication technologies in the past years has enabled development of collaborative peer-to-peer applications. The reliable collaborative application must implement some methods which help to detect malicious entities and avoid collaboration with them. Such systems are based on building trust relationships between entities; their design is difficult due to a decentralized architecture and general distrust among unknown entities. In this paper we analyze requirements for reliable trust management in an insecure environment like Internet. We propose criteria which reliable trust management should meet and we compare several published systems according to these criteria. We also propose guidance on design and evaluation of trust management techniques.