Efficient and secure semi-quantum private comparison protocol using three-particle GHZ-like states against participant attack

IF 1.5 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
Chun-Wei Yang, Yu-Yun Huang, Jason Lin, Chia-Wei Tsai
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引用次数: 0

Abstract

This study identifies a participant attack vulnerability in Li et al.’s SQPC protocol. The participant attack allows a malicious participant, Bob, to obtain the participant Alice’s secret information by intercepting and measuring photons sent to Alice, and later decrypting Alice’s encrypted comparison result. An improved SQPC protocol is proposed to address this problem. The key enhancement is introducing a mutual eavesdropping check requiring the third party and participants to verify they obtain the same photon measurement results. This enables detecting participant attacks like the one identified. The SQPC protocol proposed in this study not only withstands attacks from internal participants but also achieves quantum efficiency almost equivalent to Li et al.’s SQPC protocol. Thus, this study presents a more secure SQPC protocol without compromising quantum efficiency.

利用三粒子 GHZ 类态对抗参与者攻击的高效安全半量子私密比较协议
本研究发现了 Li 等人的 SQPC 协议中的参与者攻击漏洞。参与方攻击允许恶意参与方鲍勃通过拦截和测量发送给爱丽丝的光子来获取参与方爱丽丝的秘密信息,随后解密爱丽丝的加密比较结果。针对这一问题,我们提出了一种改进的 SQPC 协议。改进的关键在于引入了相互窃听检查,要求第三方和参与者验证他们获得的光子测量结果是否相同。这样就能检测出类似已发现的参与者攻击。本研究提出的 SQPC 协议不仅能抵御来自内部参与者的攻击,还能实现几乎等同于 Li 等人的 SQPC 协议的量子效率。因此,本研究提出了一种更安全的 SQPC 协议,同时不影响量子效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Modern Physics Letters A
Modern Physics Letters A 物理-物理:核物理
CiteScore
3.10
自引率
7.10%
发文量
186
审稿时长
3 months
期刊介绍: This letters journal, launched in 1986, consists of research papers covering current research developments in Gravitation, Cosmology, Astrophysics, Nuclear Physics, Particles and Fields, Accelerator physics, and Quantum Information. A Brief Review section has also been initiated with the purpose of publishing short reports on the latest experimental findings and urgent new theoretical developments.
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