Ontology highlight
ABSTRACT:
SUBMITTER: Wei CY
PROVIDER: S-EPMC4269884 | biostudies-other | 2014
REPOSITORIES: biostudies-other
Wei Chun-Yan CY Gao Fei F Wen Qiao-Yan QY Wang Tian-Yin TY
Scientific reports 20141218
Until now, the only kind of practical quantum private query (QPQ), quantum-key-distribution (QKD)-based QPQ, focuses on the retrieval of a single bit. In fact, meaningful message is generally composed of multiple adjacent bits (i.e., a multi-bit block). To obtain a message a1a2···al from database, the user Alice has to query l times to get each ai. In this condition, the server Bob could gain Alice's privacy once he obtains the address she queried in any of the l queries, since each a(i) contrib ...[more]