scholarly journals Multiparty Quantum Key Agreement With Strong Fairness Property

2020 ◽  
Vol 35 (6) ◽  
pp. 457-465
Author(s):  
Vankamamidi S. Naresh ◽  
Sivaranjani Reddi
Keyword(s):  
Key Agreement ◽  
Quantum Key Agreement ◽  
Strong Fairness

scholarly journals Secure multiparty quantum key agreement against collusive attacks

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hussein Abulkasim ◽  
Atefeh Mashatan ◽  
Shohini Ghose
Keyword(s):  
Key Agreement ◽  
Sensitive Information ◽  
Quantum Key Agreement ◽  
Key Agreement Protocol ◽  
Proposed Model ◽  
Shared Key ◽  
Agreement Protocols ◽  
Collusive Attacks ◽  
Attack Strategy ◽  
Collusive Attack

AbstractQuantum key agreement enables remote participants to fairly establish a secure shared key based on their private inputs. In the circular-type multiparty quantum key agreement mode, two or more malicious participants can collude together to steal private inputs of honest participants or to generate the final key alone. In this work, we focus on a powerful collusive attack strategy in which two or more malicious participants in particular positions, can learn sensitive information or generate the final key alone without revealing their malicious behaviour. Many of the current circular-type multiparty quantum key agreement protocols are not secure against this collusive attack strategy. As an example, we analyze the security of a recently proposed multiparty key agreement protocol to show the vulnerability of existing circular-type multiparty quantum key agreement protocols against this collusive attack. Moreover, we design a general secure multiparty key agreement model that would remove this vulnerability from such circular-type key agreement protocols and describe the necessary steps to implement this model. The proposed model is general and does not depend on the specific physical implementation of the quantum key agreement.

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

Controlled quantum key agreement based on maximally three-qubit entangled states

2020 ◽  
Vol 34 (18) ◽  
pp. 2050201
Author(s):  
Jie Tang ◽  
Lei Shi ◽  
Jiahua Wei
Keyword(s):  
Performance Analysis ◽  
Key Agreement ◽  
Entangled States ◽  
Quantum Key Agreement ◽  
Ghz States ◽  
Participant Attack ◽  
Significant Change

In this paper, we propose a two-party and a three-party controlled quantum key agreement (QKA) protocols with three-qubit GHZ states and Bell measurements. Compared with previous protocols, the significant change of our schemes is that a supervisor is introduced for controlling the agreement process to improve the controllability. Moreover, our protocols ensure each communication participant contribute equally to the agreement keys, and all participants can negotiate the shared keys without exchanging classical bits between them. The performance analysis shows that our protocols can be immune to outsider and participant attack.

Quantum key agreement with EPR pairs and single-particle measurements

2013 ◽  
Vol 13 (3) ◽  
pp. 649-663 ◽  
Author(s):  
Wei Huang ◽  
Qiao-Yan Wen ◽  
Bin Liu ◽  
Fei Gao ◽  
Ying Sun
Keyword(s):  
Single Particle ◽  
Key Agreement ◽  
Quantum Key Agreement ◽  
Particle Measurements ◽  
Epr Pairs

scholarly journals Dynamic Group Multi-party Quantum Key Agreement

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Yao-Hsin Chou ◽  
Guo-Jyun Zeng ◽  
Zhe-Hua Chang ◽  
Shu-Yu Kuo
Keyword(s):  
Key Agreement ◽  
Quantum Key Agreement ◽  
Dynamic Group

New quantum key agreement protocol with five-qubit Brown states

2019 ◽  
Vol 34 (40) ◽  
pp. 1950332
Author(s):  
Wei-Feng Cao ◽  
Yu-Guang Yang ◽  
Yi-Hua Zhou ◽  
Wei-Min Shi
Keyword(s):  
Quantum Channel ◽  
Key Agreement ◽  
Quantum Key Agreement ◽  
Quantum Transmission ◽  
Key Agreement Protocol ◽  
Participant Attack ◽  
Quantum Key Agreement Protocol ◽  
The Ideal

We propose a new two-party quantum key agreement (QKA) protocol using five-qubit Brown states. One-way quantum transmission can be realized by merging Brown states and decoy photons randomly. The security of this protocol is shown to resist the outsider attack and participant attack over the ideal channel. Some methods are also proposed to ensure its security in noisy and lossy quantum channel. Finally, we generalize it and propose a multi-party QKA protocol based on Brown states.

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