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Two-Server Private Information Retrieval with Optimized Download Rate and Result Verification. (arXiv:2301.11730v1 [cs.IT])
cs.CR updates on arXiv.org arxiv.org
Private Information Retrieval (PIR) schemes allow a client to retrieve any
file of interest, while hiding the file identity from the database servers. In
contrast to most existing PIR schemes that assume honest-but-curious servers,
we study the case of dishonest servers. The latter provide incorrect answers
and try to persuade the client to output the wrong result. We introduce several
PIR schemes with information-theoretic privacy and result verification for the
case of two servers. Security guarantees can be information-theoretical or …
case client database download file identity information interest privacy private rate result server servers study verification