Authenticated semi-quantum key distribution without entanglement

One important challenge of quantum key distribution is to preserve its unconditional security when a scheme is implemented. In semi-quantum key distribution (SQKD), one of the parties is only able to perform classical operations, thus alleviating the cost of its implementation. Authenticated SQKD (A...

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Bibliographic Details
Published in:Quantum information processing 2020, Vol.19 (3), Article 77
Main Authors: Zebboudj, Sofia, Djoudi, Hizia, Lalaoui, Dalila, Omar, Mawloud
Format: Article
Language:English
Subjects:
Computer Science
Data Structures and Information Theory
Mathematical Physics
Physics
Physics and Astronomy
Quantum Computing
Quantum cryptography
Quantum entanglement
Quantum Information Technology
Quantum Physics
Security
Spintronics
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Summary:One important challenge of quantum key distribution is to preserve its unconditional security when a scheme is implemented. In semi-quantum key distribution (SQKD), one of the parties is only able to perform classical operations, thus alleviating the cost of its implementation. Authenticated SQKD (ASQKD) ensures also better security than SQKD against attacks aiming at the identity of the parties. In this regard, Li et al. have proposed a new ASQKD scheme that ensures better efficiency than the first proposed ASQKD scheme of Yu et al. However, both schemes present loopholes in their security. This study presents a new ASQKD without using entanglement, able to achieve higher security than the schemes of Yu et al. and Li et al. Our scheme is also simpler and demands less advanced quantum devices than ASQKD schemes using entanglement.
ISSN:1570-0755
1573-1332
DOI:10.1007/s11128-019-2573-2