Improving the security of protocols of quantum key agreement solely using Bell states and Bell measurement

2015 ◽  
Vol 14 (11) ◽  
pp. 4245-4254 ◽  
Author(s):  
Zhen-Chao Zhu ◽  
Ai-Qun Hu ◽  
An-Min Fu
Keyword(s):  
Key Agreement ◽  
Bell States ◽  
Quantum Key Agreement ◽  
Bell Measurement

scholarly journals Protocols of quantum key agreement solely using Bell states and Bell measurement

2014 ◽  
Vol 13 (11) ◽  
pp. 2391-2405 ◽  
Author(s):  
Chitra Shukla ◽  
Nasir Alam ◽  
Anirban Pathak
Keyword(s):  
Key Agreement ◽  
Bell States ◽  
Quantum Key Agreement ◽  
Bell Measurement

Multi-Party Quantum Key Agreement Protocol with Bell States and Single Particles

2019 ◽  
Vol 58 (5) ◽  
pp. 1659-1666 ◽  
Author(s):  
Hao-Nan Liu ◽  
Xiang-Qian Liang ◽  
Dong-Huan Jiang ◽  
Yong-Hua Zhang ◽  
Guang-Bao Xu
Keyword(s):  
Key Agreement ◽  
Bell States ◽  
Quantum Key Agreement ◽  
Single Particles ◽  
Key Agreement Protocol ◽  
Quantum Key Agreement Protocol

scholarly journals Three-party quantum key agreement with Bell states

2013 ◽  
Vol 62 (17) ◽  
pp. 170304
Author(s):  
Yin Xun-Ru ◽  
Ma Wen-Ping ◽  
Shen Dong-Su ◽  
Wang Li-Li
Keyword(s):  
Key Agreement ◽  
Bell States ◽  
Quantum Key Agreement

Quantum key agreement with Bell states and Cluster states under collective noise channels

2019 ◽  
Vol 18 (6) ◽  
Author(s):  
Sha-Sha Wang ◽  
Dong-Huan Jiang ◽  
Guang-Bao Xu ◽  
Yong-Hua Zhang ◽  
Xiang-Qian Liang
Keyword(s):  
Key Agreement ◽  
Bell States ◽  
Quantum Key Agreement ◽  
Collective Noise ◽  
Cluster States

scholarly journals Comment on “Quantum key agreement protocol”

2020 ◽  
pp. 2050039
Author(s):  
Nayana Das ◽  
Ritajit Majumdar
Keyword(s):  
Quantum Teleportation ◽  
Key Agreement ◽  
Inner Product ◽  
Quantum Key Agreement ◽  
Two Dimensional ◽  
Bell Measurement ◽  
Dimensional Vector Space ◽  
Key Agreement Protocol ◽  
No Signaling ◽  
Quantum Key Agreement Protocol

The first two-party Quantum Key Agreement (QKA) protocol, based on quantum teleportation, was proposed by Zhou et al. (Electron. Lett. 40(18) (2004) 1149). In this protocol, to obtain the key bit string, one of the parties uses a device to obtain the inner product of two quantum states, one being unknown, and the other one performs Bell measurement. However, in this paper, we show that it is not possible to obtain a device that would output the inner product of two qubits even when only one of the qubits is unknown. This is so because the existence of such a device would imply perfectly distinguishing among four different states in a two-dimensional vector space. This is not permissible in quantum mechanics. Furthermore, we argue that the existence of such a device would also imply a violation of the “No Signaling Theorem” as well.

scholarly journals Efficient travelling-mode quantum key agreement against participant’s attacks

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Wei-cong Huang ◽  
Yong-kai Yang ◽  
Dong Jiang ◽  
Li-jun Chen
Keyword(s):  
Theoretical Analysis ◽  
Key Agreement ◽  
Geographical Location ◽  
Bell States ◽  
Quantum Key Agreement ◽  
Internal Attacks

Abstract Quantum key agreement (QKA) is to negotiate a final key among several participants fairly and securely. In this paper, we show that some existing travelling-mode multiparty QKA protocols are vulnerable to internal participant’s attacks. Dishonest participants can exploit a favorable geographical location or collude with other participants to predetermine the final keys without being discovered. To resist such attacks, we propose a new travelling-mode multiparty QKA protocol based on non-orthogonal Bell states. Theoretical analysis shows that the proposed protocol is secure against both external and internal attacks, and can achieve higher efficiency compared with existing travelling-mode multiparty QKA protocols. Finally we design an optical platform for each participant, and show that our proposed protocol is feasible with current technologies.

Semi-Quantum Key Agreement and Private Comparison Protocols Using Bell States

2019 ◽  
Vol 58 (11) ◽  
pp. 3852-3862 ◽  
Author(s):  
Lili Yan ◽  
Shibin Zhang ◽  
Yan Chang ◽  
Zhiwei Sheng ◽  
Yuhua Sun
Keyword(s):  
Key Agreement ◽  
Bell States ◽  
Quantum Key Agreement ◽  
Private Comparison

An Efficient and Secure Arbitrary N-Party Quantum Key Agreement Protocol Using Bell States

2017 ◽  
Vol 57 (1) ◽  
pp. 195-207 ◽  
Author(s):  
Wen-Jie Liu ◽  
Yong Xu ◽  
Ching-Nung Yang ◽  
Pei-Pei Gao ◽  
Wen-Bin Yu
Keyword(s):  
Key Agreement ◽  
Bell States ◽  
Quantum Key Agreement ◽  
Key Agreement Protocol ◽  
Quantum Key Agreement Protocol
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