Semiquantum Private Comparison of Size Relationship Based on d-level Single-Particle States

Abstract

In this paper, we propose a novel semiquantum private comparison (SQPC) protocol of size relationship based on d-level single-particle states. The designed protocol can compare the size relationship of different privacy messages from two classical users with the help of a semi-honest third party (TP), who is permitted to misbehave on her own but cannot be in collusion with anyone else. The correctness analysis shows that this protocol can gain correct comparison results. The security analysis turns out that this protocol can resist famous outside attacks and participant attacks. Moreover, this protocol can guarantee that TP does not know the accurate comparison results. Compared with the only existing SQPC protocol of size relationship (Quantum Inf. Process. 20:124 (2021)), this protocol takes advantage over it on the aspects of initial quantum resource, TP's measurement operations and TP's knowledge about the comparison results.

12 pages, 2 figures, 2 tables

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Cited by in corpus (4)

• A novel multi-party semiquantum private comparison protocol of size relationship with d-dimensional single-particle states
• Multi-party quantum private comparison of size relationship with two third parties based on d-dimensional Bell states
• Semiquantum private comparison based on Bell states without quantum measurements from the classical user
• Semiquantum private comparison via cavity QED