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Homomorphic Encryptions at a Long Distance Through Quantum Key Distribution Protocols
New Phys.: Sae Mulli 2019; 69: 187~193
Published online February 28, 2019;
© 2019 New Physics: Sae Mulli.

Kabgyun JEONG*1, Yong Jin KIM2, Jong Beom YOON2, Geon Woo KIM2, Gueha CHO2, Suntaek KIM2

1 IMDARC, Department of Mathematical Sciences, Seoul National University, Seoul 08826, Korea

2 Chungnam Science High School, Kongju 32620, Korea

Correspondence to:
Received November 20, 2018; Accepted December 20, 2018.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
In general, the homomorphic encryption (HE) scheme is a cryptosystem that has recently come into the spotlight due to changes in the computer environment such as cloud computing and to the threat of personal information being leaked. In addition, the information-theoretic security of the quantum key distribution (QKD) protocol represented by the BB84 protocol was proven long ago, so it has been actively studied for commercialization. Although HE is secure for various applications, problems arise in scenarios where multi-party users have to implement remote operations. In this paper, we first propose a method that enables multi-party remote computation of the homomorphic encryption by using a QKD protocol at a long distance.
PACS numbers: 03.67.-a, 03.67.Dd, 03.67.Hk, 89.70.-a
Keywords: Homomorphic encryption, Quantum key distribution, Private quantum channel, QKD-based HE

April 2019, 69 (4)
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