Noninteractive xor Quantum Oblivious Transfer: Optimal Protocols and Their Experimental Implementations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73619035" target="_blank" >RIV/61989592:15310/23:73619035 - isvavai.cz</a>

Result on the web

<a href="https://journals.aps.org/prxquantum/pdf/10.1103/PRXQuantum.4.020320" target="_blank" >https://journals.aps.org/prxquantum/pdf/10.1103/PRXQuantum.4.020320</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PRXQuantum.4.020320" target="_blank" >10.1103/PRXQuantum.4.020320</a>

Result language

angličtina

Original language name

Noninteractive xor Quantum Oblivious Transfer: Optimal Protocols and Their Experimental Implementations

Original language description

Oblivious transfer (OT) is an important cryptographic primitive. Any multiparty computation can be realized with OT as building block. xor oblivious transfer (XOT) is a variant where the sender Alice has two bits and a receiver Bob obtains either the first bit, the second bit, or their xor. Bob should not learn anything more than this and Alice should not learn what Bob has learnt. Perfect quantum OT with information-theoretic security is known to be impossible. We determine the smallest possible cheating probabilities for unrestricted dishonest parties in noninteractive quantum XOT protocols using symmetric pure states and present an optimal protocol, which outperforms classical protocols. We also “reverse” this protocol, so that Bob becomes sender of a quantum state and Alice the receiver who measures it, while still implementing oblivious transfer from Alice to Bob. Cheating probabilities for both parties stay the same as for the unreversed protocol. We optically implement both the unreversed and the reversed protocols, and cheating strategies, noting that the reversed protocol is easier to implement.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

PRX Quantum

ISSN

2691-3399

e-ISSN

2691-3399

Volume of the periodical

4

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

24

Pages from-to

"020320-1"-"020320-24"

UT code for WoS article

000988680200001

EID of the result in the Scopus database

2-s2.0-85139050755