Paper 2022/1238 Original: eprint.iacr.org/2022/1238 ↗
Secure Quantum Bit Commitment
Abstract
Bit commitment (BC) is one of the most important fundamental protocols in secure multi-party computation. However, it is generally believed that unconditionally secure bit commitment is impossible even with quantum resources. In this paper, we design a secure non-interactive bit commitment protocol by exploiting the no-communication theorem of the quantum entangled states, whose security relies on the indistinguishability of whether the Bell states are measured or not. The proposed quantum bit commitment (QBC) is secure against classical adversaries with unlimited computing power, and the probability of a successful attack by quantum adversaries decreases exponentially as $n$ (the number of qubits in a group) increases.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2022-09-19: last updated
- 2022-09-19: published
- Short URL
- https://ia.cr/2022/1238
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2022/1238,
author = {Ping Wang and Yiting Su and Fangguo Zhang},
title = {Secure Quantum Bit Commitment},
howpublished = {Cryptology {ePrint} Archive, Paper 2022/1238},
year = {2022},
url = {https://eprint.iacr.org/2022/1238}
}