Weakly-Private Information Retrieval From MDS-Coded Distributed Storage
CoRR(2024)
摘要
We consider the problem of weakly-private information retrieval (WPIR) when
data is encoded by a maximum distance separable code and stored across multiple
servers. In WPIR, a user wishes to retrieve a piece of data from a set of
servers without leaking too much information about which piece of data she is
interested in. We study and provide the first WPIR protocols for this scenario
and present results on their optimal trade-off between download rate and
information leakage using the maximal leakage privacy metric.
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