Secure Clustered Distributed Storage Against Eavesdroppers [article]

Beongjun Choi, Jy-yong Sohn, Sung Whan Yoon, Jaekyun Moon
2017 arXiv   pre-print
This paper considers the security issue of practical distributed storage systems (DSSs) which consist of multiple clusters of storage nodes. Noticing that actual storage nodes constituting a DSS are distributed in multiple clusters, two novel eavesdropper models - the node-restricted model and the cluster-restricted model - are suggested which reflect the clustered nature of DSSs. In the node-restricted model, an eavesdropper cannot access the individual nodes, but can eavesdrop
more » ... g data for L_c compromised clusters. In the cluster-restricted model, an eavesdropper can access a total of l individual nodes but the number of accessible clusters is limited to L_c. We provide an upper bound on the securely storable data for each model, while a specific network coding scheme which achieves the upper bound is obtained for the node-restricted model, given some mild condition on the node storage size.
arXiv:1702.07498v1 fatcat:ijrbojurlbgwlbsqzf2bx5yomi