Single-Database Private Information Retrieval with Constant Communication Rate

  title={Single-Database Private Information Retrieval with Constant Communication Rate},
  author={C. Gentry and Zulfikar Ramzan},
  • C. Gentry, Zulfikar Ramzan
  • Published in ICALP 2005
  • Computer Science
  • We present a single-database private information retrieval (PIR) scheme with communication complexity ${\mathcal O}(k+d)$, where k ≥ log n is a security parameter that depends on the database size n and d is the bit-length of the retrieved database block. This communication complexity is better asymptotically than previous single-database PIR schemes. The scheme also gives improved performance for practical parameter settings whether the user is retrieving a single bit or very large blocks. For… CONTINUE READING
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