Collusion attack and counterattack on the quantum key agreement via non-maximally entangled cluster states
Quantum Physics
2021-02-03 v1 Cryptography and Security
Abstract
Recently, Li et al. (Int J Theor Phys: DOI: 10.1007/s10773-020-04588-w, 2020) proposed a multiparty quantum key agreement protocol via non-maximally entangled cluster states. They claimed that the proposed protocol can help all the involved participants have equal influence on the final shared key. However, this study points out a loophole that makes Li et al.'s protocol suffer from a collusion attack, i.e. several dishonest participants can conspire to manipulate the final shared key without being detected by others. To avoid this loophole, an improvement is proposed here.
Keywords
Cite
@article{arxiv.2010.10002,
title = {Collusion attack and counterattack on the quantum key agreement via non-maximally entangled cluster states},
author = {Jun Gu and Tzonelih Hwang},
journal= {arXiv preprint arXiv:2010.10002},
year = {2021}
}