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Private information retrieval

Chor, B., Goldreich, O., Kushilevitz, E., Sudan, M.·2002·Proceedings of IEEE 36th Annual Foundations of Computer Science

Abstract

We describe schemes that enable a user to access k replicated copies of a database (k/spl ges/2) and privately retrieve information stored in the database. This means that each individual database gets no information on the identity of the item retrieved by the user. For a single database, achieving this type of privacy requires communicating the whole database, or n bits (where n is the number of bits in the database). Our schemes use the replication to gain substantial saving. In particular, we have: A two database scheme with communication complexity of O(n/sup 1/3/). A scheme for a constant number, k, of databases with communication complexity O(n/sup 1/k/). A scheme for 1/3 log/sub 2/ n databases with polylogarithmic (in n) communication complexity.

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Metadata

Authors
Chor, B., Goldreich, O., Kushilevitz, E., & Sudan, M.
Venue
Proceedings of IEEE 36th Annual Foundations of Computer Science
Published
2002-11-19
Pages
41-50
ISSN
0272-5428 (ISSN-L)
OpenAlex
W2150307013
Cited by
1,116
References
0
FWCI
25.01
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: Private information retrieval. https://app.cochat.ai/papers/10.1109/sfcs.1995.492461
The paper
Chor, B., Goldreich, O., Kushilevitz, E., & Sudan, M. (2002). Private information retrieval. Proceedings of IEEE 36th Annual Foundations of Computer Science. https://doi.org/10.1109/sfcs.1995.492461

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.