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Security Problem in Cluster Distributed Storage Systems: Regenerating Code Against Two General Types of Active Adversaries
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Summary
This paper studies security in clustered distributed storage systems (CDSSs), a class of heterogeneous storage systems whose nodes are organized into multiple clusters. It analyzes resiliency against two active adversaries, an omniscient adversary and a limited-knowledge adversary, who can send corrupted data during file reconstruction and repair. The authors derive tight upper bounds on these capacities, achievable through combinatorial coding constructions in repair-by-transfer coding, and these bounds generalize existing results for traditional distributed storage systems.