A robust and secure overlay storage scheme based on erasure coding

Recently, in classical P2P overlay networks, with applying replication technique, a single peer is replaced by a cluster of peers in order to tolerant Byzantine failures. In this paper, a novel robust and secure scheme for storage overlay networks is proposed by applying erasure coding technique to reduce redundancy and enhance privacy protection. For achieving a lightweight data privacy protection, encoded strips are stored and dual distinct hash functions are deployed to construct hash chains to protect location information for encoded strips. Simulation results show that with different percentage of malicious peers, by adjusting encoding parameters, the scheme is available to provide durable data storage service.