PeerNil: An approach to publish and lookup Nilsimsa digest in chord

Nilsimsa algorithm plays an important part in the anti-spam technique. In this paper, we introduce the concept of Nilsimsa vector based on the research on the procedure of the Nilsimsa digest generation. By taking the length of Nilsimsa vector as the key, we propose an approach to publish and perform lookup for Nilsimsa digest in Chord: PeerNil. We analyze the lookup efficiency and load balancing issue in PeerNil. The experiment results demonstrate the effectiveness of PeerNil.