Unconditionally secure multi-party quantum commitment scheme

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Abstract

A new unconditionally secure multi-party quantum commitment is proposed in this paper by encoding the committed message to the phase of a quantum state. Multi-party means that there are more than one recipient in our scheme. We show that our quantum commitment scheme is unconditional hiding and binding, and hiding is perfect. Our technique is based on the interference of phase-encoded coherent states of light. Its security proof relies on the no-cloning theorem of quantum theory and the properties of quantum information.

Keywords

Photodetection Phase Quantum commitment Hiding 

Notes

Acknowledgements

We express our heartfelt thanks to reviewers for their useful comments which improve our manuscript greatly.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2017

Authors and Affiliations

  1. 1.Key Laboratory of Cryptologic Technology and Information Security, Ministry of Education, School of MathematicsShandong UniversityJinanChina

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