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arXiv · 1901.03004

Multi-bit quantum digital signature based on quantum temporal ghost imaging

Xin Yao·Xu Liu·Rong Xue·Heqing Wang·Hao Li·Zhen Wang·Lixing You·Yidong Huang·Wei Zhang
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Abstract

Digital signature scheme is commonly employed in modern electronic commerce and quantum digital signature (QDS) offers the information-theoretical security by the laws of quantum mechanics against attackers with unreasonable computation resources. The focus of previous QDS was on the signature of 1-bit message. In contrast, based on quantum ghost imaging with security test, we propose a scheme of QDS in which a multi-bit message can be signed at a time. Our protocol is no more demanding than the traditional cases for the requirements of quantum resources and classical communications. The multi-bit protocol could simplify the procedure of QDS for long messages in practical applications.

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Xin Yao, Xu Liu, Rong Xue, Heqing Wang, Hao Li, Zhen Wang, Lixing You, Yidong Huang, Wei Zhang. 2019-01-10. Multi-bit quantum digital signature based on quantum temporal ghost imaging. https://arxiv.org/abs/1901.03004

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