Summary: A Reputation System for Peer­to­Peer Networks
Minaxi Gupta, Paul Judge, Mostafa Ammar
College of Computing, Georgia Institute of Technology
{minaxi, judge, ammar}@cc.gatech.edu
ABSTRACT
We investigate the design of a reputation system for de­
centralized unstructured P2P networks like Gnutella. Hav­
ing reliable reputation information about peers can form
the basis of an incentive system and can guide peers in
their decision making (e.g., who to download a file from).
The reputation system uses objective criteria to track each
peer's contribution in the system and allows peers to store
their reputations locally. Reputation are computed using ei­
ther of the two schemes, debit­credit reputation computation
(DCRC) and credit­only reputation computation (CORC).
Using a reputation computation agent (RCA), we design a
public key based mechanism that periodically updates the
peer reputations in a secure, light­weight, and partially dis­
tributed manner. We evaluate using simulations the perfor­
mance tradeo#s inherent in the design of our system.

Source: Ammar, Mostafa - College of Computing, Georgia Institute of Technology

Collections: Computer Technologies and Information Sciences