Teleportation-based continuous-variable quantum digital signature

Wei Zhao; Fu-qiang Wang; Yi-yu Mao; Hai Zhong; Chao Ding; Xin-chao Ruan

Results in Physics (Oct 2023)

Teleportation-based continuous-variable quantum digital signature

Wei Zhao,
Fu-qiang Wang,
Yi-yu Mao,
Hai Zhong,
Chao Ding,
Xin-chao Ruan

Affiliations

Wei Zhao: Key Laboratory of Computing Power Network and Information Security, Ministry of Education, Shandong Computer Science Center (National Supercomputer Center in Jinan), Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Shandong Provincial Key Laboratory of Computer Networks, Shandong Fundamental Research Center for Computer Science, Jinan, China
Fu-qiang Wang: Key Laboratory of Computing Power Network and Information Security, Ministry of Education, Shandong Computer Science Center (National Supercomputer Center in Jinan), Qilu University of Technology (Shandong Academy of Sciences), Jinan, China; Shandong Provincial Key Laboratory of Computer Networks, Shandong Fundamental Research Center for Computer Science, Jinan, China
Yi-yu Mao: School of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha 410015, China
Hai Zhong: School of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha 410015, China
Chao Ding: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Xin-chao Ruan: School of Automation, Central South University, Changsha 410083, China; Corresponding author.

Journal volume & issue: Vol. 53
p. 107018

Abstract

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In this paper, a continuous-variable quantum digital signature (CV-QDS) protocol based on quantum teleportation (QT) is proposed, and the corresponding theoretical analysis method is established. Unlike previous schemes, we use squeezed states to carry key and secret information about the teleported states that are transmitted through classical and entangled channels without infinite squeezing. In addition, for multibit information signatures, we propose to use the mean and modulation variance of the teleported quantum state to distinguish signatures, and each of which is marked and ordered. In particular, we derive the fidelity that the protocol can achieve, displaying the effectiveness of the method at different compression levels. Security analysis demonstrates that the protocol possesses unforgeability, non-repudiation and robustness, which is suitable for signing one-bit and multibit messages.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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