Kang, Min-Sung Heo, Jino Hong, Chang-Ho Yang, Hyung-Jin Moon, Sung Han, Sang-Wook 2024-01-19T18:02:35Z 2024-01-19T18:02:35Z 2021-09-05 2020-03 1570-0755 https://pubs.kist.re.kr/handle/201004/118906 Recently, Wang et al. (Quantum Inf Process, QINP-D-18-00478R1, 2019) commented that a third party can obtain an authentication key from communicating parties by performing an entanglement swapping attack on the controlled mutual quantum entity authentication (CMQEA) protocol. In this response, we apply this attack to the CMQEA protocol and analyze whether this claim is actually valid. From the analysis, we provide a confirmation that this attack can be prevented using existing countermeasures. In addition, we propose an improved protocol that is fundamentally robust to entanglement swapping attack. English SPRINGER Response to "Comment on 'Controlled mutual quantum entity authentication with an untrusted third party'" Article 10.1007/s11128-020-2608-8 1 QUANTUM INFORMATION PROCESSING, v.19, no.4 QUANTUM INFORMATION PROCESSING 19 4 N scie scopus 000519806800001 2-s2.0-85081007481 Quantum Science & Technology Physics, Multidisciplinary Physics, Mathematical Physics Editorial Material ENTANGLEMENT DIALOGUE STATES Quantum entity authentication GHZ-like state Untrusted third party Entanglement swapping attack