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High-efficiency quantum digital signature scheme for signing long messages

  • Hao Zhang
  • Xue-Bi An
  • Chun-Hui Zhang
  • Chun-Mei Zhang
  • Qin WangEmail author
Article
  • 118 Downloads

Abstract

Quantum digital signature (QDS) is based on the laws of quantum physics, and can provide unconditional security for signing messages between remote multi-party users. To date, different QDS protocols have been proposed and corresponding security analysis has been done. Just most security analyses are directed against signing single-bit messages, and the security cannot be ensured when signing multi-bit messages if one simply puts blocks together. Recently, T.Y. Wang et al. analyzed the security under this situation and gave a solution for eliminating potential eavesdropping attacks. However, its efficiency is relatively low since they need to consume more than 2n-bit signatures to sign a classical n-bit message. In this paper, we propose a high efficient approach for signing multi-bit messages. As a result, the efficiency can be improved with 36.92% when signing a 128-bit message compared with using T.Y. Wang et al.’s method. And the improvement is even larger when signing longer messages.

Keywords

Quantum digital signature Multi-bit messages High efficiency 

Notes

Acknowledgements

The authors thank Xing-Yu Zhou, Kang Liu, Jia-Ming Chen and Jian-Rong Zhu for enlightened discussions.

Funding

We gratefully acknowledge the financial support from the National Key R&D Program of China through Grant Nos. 2018YFA0306400, 2017YFA0304100, the National Natural Science Foundation of China through Grants Nos. 61475197, 61590932, 11774180, 61705110, the Natural Science Foundation of the Jiangsu Higher Education Institutions through Grant No. 17KJB140016, the Natural Science Foundation of Jiangsu Province through Grant No. BK20170902, the Priority Academic Program Development of Jiangsu Higher Education Institutions, and the Postgraduate Research and Practice Innovation Program of Jiangsu Province through Grant No. 46002CX17792.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Hao Zhang
    • 1
    • 2
    • 3
  • Xue-Bi An
    • 4
    • 5
  • Chun-Hui Zhang
    • 1
    • 2
    • 3
  • Chun-Mei Zhang
    • 1
    • 2
    • 3
    • 4
  • Qin Wang
    • 1
    • 2
    • 3
    • 4
    Email author
  1. 1.Institute of Quantum Information and TechnologyNanjing University of Posts and TelecommunicationsNanjingChina
  2. 2.Broadband Wireless Communication and Sensor Network TechnologyKey Lab of Ministry of Education, NUPTNanjingChina
  3. 3.Telecommunication and Networks, National Engineering Research Center, NUPTNanjingChina
  4. 4.Key Laboratory of Quantum Information, CASUniversity of Science and Technology of ChinaHefeiChina
  5. 5.State Key Laboratory of CryptologyBeijingChina

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