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- Title
Improvement on 'Multiparty Quantum Key Agreement with Four-Qubit Symmetric W State'.
- Authors
Abulkasim, Hussein; Alotaibi, Afraa
- Abstract
Recently, Wang et al. (Int J Theo Phys: pp. 3716–3726, 2018) proposed a multiparty quantum key agreement scheme with four-particles W state. Their protocol uses the delayed measurement technique, the block transmission technique, and the single decoy photon technique to determine a shared secret key between three or more participants. They claimed that their protocol could resist both internal/participant and external attacks. However, this work indicates that two dishonest participants can collude to get the private data of a participant who executes the protocol honestly. To solve this issue, a simple modification is suggested in this work.
- Subjects
KEY agreement protocols (Computer network protocols); PHOTONS
- Publication
International Journal of Theoretical Physics, 2019, Vol 58, Issue 12, p4235
- ISSN
0020-7748
- Publication type
Article
- DOI
10.1007/s10773-019-04293-3