AUTHOR=Wu WanQing , Guo LingNa , Xie MingZhe 

TITLE=Multi-party semi-quantum private comparison based on the maximally entangled GHZ-type states

JOURNAL=Frontiers in Physics

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2022.1048325

DOI=10.3389/fphy.2022.1048325

ISSN=2296-424X

ABSTRACT=Semi-quantum private comparison (SQPC) aims to use a small amount of quantum capabilities to compare the equality of participants’ secrets. In this paper, TP is a semi-honest third party with all quantum capabilities while the participants’ quantum capability is limited. In recent years, research on semi-quantum privacy comparison protocol has made some achievements, but most of SQPC protocol can only compare the equality of two parties and cannot be extended to the multiparty case. Therefore, we proposed a multi-party semi-quantum private comparison protocol based on the maximally entangled GHZ-type state, which can compare the equality of n parties. What is more, the participant’s encrypted information is not transmitted through the classical channel, which improves the security of the protocol. Finally, the security analysis demonstrates that outside eavesdropper, inside dishonest participant and semi-honest third party cannot obtain any private
information.