Abstract : Peer-to-peer (P2P) networks are self-configuring networks which plays vital role in file sharing with
minimal or no central control.
The purpose of securing P2P networks essential in nature. P2P networks are vulnerable to peers who cheat, propagate malicious code, leech on the network, or simply do not cooperate.
The Traditional security techniques developed for the centralized distributed systems like client-server networks are
insufficient for P2P networks by the virtue of their centralized nature.
The absence of a central authority in a P2P network poses unique challenges for reputation management in the network. These challenges include identity management of the peers, secure reputation data management, Sybil attacks, and above all, availability of reputation data.
In the proposed system, we present a cryptographic protocol for ensuring secure and timely availability of the reputation data of a peer to other peers at extremely low costs.
The past behaviour of the peer is encapsulated in its digital reputation, and is subsequently used to predict its future actions. As a result, a peer’s reputation motivates it to cooperate and desist from malicious activities.
The cryptographic protocol is coupled with self-certification and cryptographic mechanisms for identity management and countering Sybil attack.
The reputation of requester and provider, both are considered to ostracize malicious peer in the P2P network, which leads to data secrecy, less network traffic and no delay in the transaction.
Please find the following attachments"P2P Reputation Management seminar report/pdf/ppt download" here........