Efficient Simultaneous Privately and Publicly Verifiable Robust Provable Data Possession from Elliptic Curves

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Provided by: Graz University of Technology
Topic: Data Management
Format: PDF
When outsourcing large sets of data to the cloud, it is desirable for clients to efficiently check, whether all outsourced data is still retrievable at any later point in time without requiring to download all of it. Provable Data Possession (PDP)/Proofs of Retrievability (PoR), for which various constructions exist, are concepts to solve this issue. Interestingly, by now, no PDP/PoR scheme leading to an efficient construction supporting both private and public verifiability simultaneously is known.
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