Double C-NOT attack on a single-state semi-quantum key distribution protocol and its improvement
Quantum Physics
2020-09-29 v1
Abstract
Recently, Zhang et al. proposed a single-state semi-quantum key distribution protocol (Int. J. Quantum Inf, 18, 4, 2020) to help a quantum participant to share a secret key with a classical participant. However, this study shows that an eavesdropper can use a double C-NOT attack to obtain parts of the final shared key without being detected by the participants. To avoid this problem, a modification is proposed here.
Cite
@article{arxiv.2009.12535,
title = {Double C-NOT attack on a single-state semi-quantum key distribution protocol and its improvement},
author = {Jun Gu and Tzonelih Hwang},
journal= {arXiv preprint arXiv:2009.12535},
year = {2020}
}