Photo by adigold1 from unsplash
Ma et al. [Int. J. Theor. Phys. (2021): 1328–1338] proposed a multi-party quantum key distribution (MQKD) protocol using Bell states, in which multiple participants can distribute a group key efficiently.… Click to show full abstract
Ma et al. [Int. J. Theor. Phys. (2021): 1328–1338] proposed a multi-party quantum key distribution (MQKD) protocol using Bell states, in which multiple participants can distribute a group key efficiently. However, this study indicates that Ma et al.’s protocol has two security loopholes. First, an attacker can obtain the pre-shared key Ks using an eavesdropping attack. Second, the attacker uses an intercept-and-resend attack to steal the group key shared among the participants without being detected. An improved MQKD protocol is proposed to overcome these loopholes.
Journal Title: International Journal of Theoretical Physics
Year Published: 2021
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!