Quantum Symmetrically-Private Information Retrieval
Quantum Physics
2007-05-23 v1 Cryptography and Security
Abstract
Private information retrieval systems (PIRs) allow a user to extract an item from a database that is replicated over k>=1 servers, while satisfying various privacy constraints. We exhibit quantum k-server symmetrically-private information retrieval systems (QSPIRs) that use sublinear communication, do not use shared randomness among the servers, and preserve privacy against honest users and dishonest servers. Classically, SPIRs without shared randomness do not exist at all.
Keywords
Cite
@article{arxiv.quant-ph/0307076,
title = {Quantum Symmetrically-Private Information Retrieval},
author = {Iordanis Kerenidis and Ronald de Wolf},
journal= {arXiv preprint arXiv:quant-ph/0307076},
year = {2007}
}
Comments
8 pages LaTeX