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- Title
An Efficient and Secure Arbitrary N-Party Quantum Key Agreement Protocol Using Bell States.
- Authors
Liu, Wen-Jie; Xu, Yong; Yang, Ching-Nung; Gao, Pei-Pei; Yu, Wen-Bin
- Abstract
Two quantum key agreement protocols using Bell states and Bell measurement were recently proposed by Shukla et al. (Quantum Inf. Process. 13(11), 2391-2405, 2014). However, Zhu et al. pointed out that there are some security flaws and proposed an improved version (Quantum Inf. Process. 14(11), 4245-4254, 2015). In this study, we will show Zhu et al.'s improvement still exists some security problems, and its efficiency is not high enough. For solving these problems, we utilize four Pauli operations { I, Z, X, Y} to encode two bits instead of the original two operations { I, X} to encode one bit, and then propose an efficient and secure arbitrary N-party quantum key agreement protocol. In the protocol, the channel checking with decoy single photons is introduced to avoid the eavesdropper's flip attack, and a post-measurement mechanism is used to prevent against the collusion attack. The security analysis shows the present protocol can guarantee the correctness, security, privacy and fairness of quantum key agreement.
- Subjects
QUANTUM measurement; KEY agreement protocols (Computer network protocols); PAULI matrices; QUANTUM states; AGREEMENT protocols (Computer network protocols)
- Publication
International Journal of Theoretical Physics, 2018, Vol 57, Issue 1, p195
- ISSN
0020-7748
- Publication type
Article
- DOI
10.1007/s10773-017-3553-x