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On the lightweight authenticated semi-quantum key distribution protocol without Trojan horse attack (2010.10236v1)
Published 20 Oct 2020 in quant-ph and cs.CR
Abstract: Recently, Tsai et al. (Laser Phys. Lett. 17, 075202, 2020) proposed a lightweight authenticated semi-quantum key distribution protocol for a quantum participant to share a secret key with a classical participant. However, this study points out that an attacker can use a modification attack to make both participants share a wrong key without being detected. To avoid this problem, an improvement is proposed here.