Multiparty quantum key agreement protocol secure against collusion attacks

Abstract

The fairness of a secure multi-party quantum key agreement (MQKA) protocol requires that all involved parties are entirely peer entities and can equally influence the outcome of the protocol to establish a shared key wherein no one can decide the shared key alone. However, it is found that parts of the existing MQKA protocols are sensitive to collusion attacks, i.e., some of the dishonest participants can collaborate to predetermine the final key without being detected. In this paper, a multi-party QKA protocol resisting collusion attacks is proposed. Different from previous QKA protocol resisting $N-1$ coconspirators or resisting $1$ coconspirators, we investigate the general circle-type MQKA protocol which can be secure against $t$ dishonest participants' cooperation. Here, $t<N$. We hope the results of the presented paper will be helpful for further research on fair MQKA protocols.

8 pages, 1 figures, Any comments are welcomed

References in corpus (4)

• Orthogonal-state-based protocols of quantum key agreement
• Cryptanalysis of a multi-party quantum key agreement protocol with single particles
• Cryptanalysis and improvement of the quantum private comparison protocol based on Bell entangled states
• Same Initial States Attack in Yang et al.'s Quantum Private Comparison Protocol and the Improvement

Cited by in corpus (3)

• Secure multi-party quantum summation based on quantum Fourier transform
• Quantum sealed-bid auction using a modified scheme for multiparty circular quantum key agreement
• Design of Quantum Key Agreement Protocols with Strong Fairness Property