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Exploring the feasibility of proactive reputations

By Gayatri Swamynathan, Ben Y. Zhao and Kevin C. Almeroth


Reputation mechanisms help peers in a peer-to-peer system avoid unreliable or malicious peers. In application-level networks, however, short peer lifetimes mean reputations are often generated from a small number of past transactions. These reputation values are less ‘reliable’, and more vulnerable to bad-mouthing or collusion attacks. We address this issue by introducing proactive reputations, a first-hand history of transactions initiated to augment incomplete or short-term reputation values. We present several mechanisms to generate proactive reputations, along with a statistical similarity metric to measure thei

Year: 2006
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