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Quantum Search on Encrypted Data Based on Quantum Homomorphic Encryption.

Abstract：

:We propose a homomorphic search protocol based on quantum homomorphic encryption, in which a client Alice with limited quantum ability can give her encrypted data to a powerful but untrusted quantum server and let the server search for her without decryption. By outsourcing the interactive key-update process to a trusted key center, Alice only needs to prepare and encrypt her original data and to decrypt the ciphered search result in linear time. Besides, we also present a compact and perfectly secure quantum homomorphic evaluation protocol for Clifford circuits, where the decryption key can be calculated by Alice with polynomial overhead with respect to the key length.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Zhou Q,Lu S,Cui Y,Li L,Sun J

doi

10.1038/s41598-020-61791-9

subject

Has Abstract

pub_date

2020-03-20 00:00:00

pages

5135

issue

1

issn

2045-2322

pii

10.1038/s41598-020-61791-9

journal_volume

10

pub_type

杂志文章

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