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Comment on “Quantum private comparison of equality protocol without a third party”

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Abstract

Recently, Lin et al. proposed a quantum protocol (Quantum Inf Process 13:239, 2014), which can compare the secret data of Alice and Bob without the help from a third party. Here it will be shown that the protocol is insecure. Both Alice and Bob can learn the secret of the other party without being detected.

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Authors and Affiliations

  1. School of Physics and Engineering, Sun Yat-sen University, Guangzhou, 510275, China

    Guang Ping He

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  1. Guang Ping He
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Correspondence to Guang Ping He.

Additional information

The author thanks Prof. Bang-Hai Wang for his helping. This work was supported in part by the NSF of China, the NSF of Guangdong province, and the Foundation of Zhongshan University Advanced Research Center.

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He, G.P. Comment on “Quantum private comparison of equality protocol without a third party”. Quantum Inf Process 14, 2301–2305 (2015). https://doi.org/10.1007/s11128-015-0963-7

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  • DOI: https://doi.org/10.1007/s11128-015-0963-7

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