Replication Is Not Needed

نویسندگان

  • Eyal Kushilevitz
  • Rafail Ostrovsky
چکیده

We establish the following, quite unexpected, result: replication of data for the computational Private Information Retrieval problem is not necessary. More speci cally, based on the quadratic residuosity assumption, we present a single database, computationally-private information-retrieval scheme with O(n ) communication complexity for any > 0.

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تاریخ انتشار 1997