Decentralized reputation based trust model for peer-to-peer content distribution networks

Enormous content distribution systems improved broadly with the rapid growth of novel and innovative technologies. Peer-to-peer (P2P) content distribution network (CDN) technologies such innovative technological improvement which claims low cost, efficient high demand data distribution and it gradually involves to the next-generation CDNs. Communications among the nodes of such open network infrastructures commonly perceived as an environment offering both opportunities and threats, which are based on trust issues. Thus, a trust mechanism is required to establish secure communication between the content delivery nodes. This paper introduces a novel, decentralized, cooperative and self-organized reputation based trust algorithm to mitigate the security complications of CDNs. To illustrate the trust model, a novel P2P hybrid network infrastructure has been introduced. The key notion of the research is to validate trust of the target before send or accept the traffic. Furthermore, performance of the proposed trust algorithm is evaluated through the ns-2 simulator in order to analyze the trusted and untrusted behavior of the P2P content delivery nodes.