TrustCode: P2P reputation-based trust management using network coding

Abstract

Trust management is very important for participating users to assess trustworthiness of peers and identify misbehaving peers in the open P2P environment. In this paper, we present TrustCode, a framework for P2P reputation-based trust management. Leveraging random network coding, TrustCode spreads coded feedbacks massively among peers, thereby achieving bandwidth-efficient dissemination, ensuring data availability, and yielding efficient feedback retrieval. Our simulations show that TrustCode is resilient to failures and robust against malicious nodes. To exhibit applicability of TrustCode, we also present two applications that can be built on top of TrustCode. © 2008 Springer Berlin Heidelberg.