2.3QUANT-PHOct 20, 2020
On the lightweight authenticated semi-quantum key distribution protocol without Trojan horse attackJun Gu, Tzonelih Hwang
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.