Abstract
Kang et al. (Quantum Inf Process 17(7):159, 2018) proposed a controlled mutual quantum entity authentication protocol with an untrusted third party. We reexamined its security and further found there is a secure flaw, that is, the untrusted third party Charlie can get the shared key between Alice and Bob without being detected. In addition, we gave a strategy to avoid this secure flaw.
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References
Kang, M.S., Heo, J., Hong, C.H., et al.: Controlled mutual quantum entity authentication with an untrusted third party. Quantum Inf. Process. 17(7), 159 (2018)
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Acknowledgements
This work was supported by National Natural Science Foundation of China (No. 61772001).
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This comment refers to the article available online at https://doi.org/10.1007/s11128-018-1927-5.
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Wang, Q., Zhang, S., Wang, Sl. et al. Comment on “Controlled mutual quantum entity authentication with an untrusted third party”. Quantum Inf Process 19, 125 (2020). https://doi.org/10.1007/s11128-020-2611-0
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DOI: https://doi.org/10.1007/s11128-020-2611-0