An Efficient Protocol for the Secure Multi-party Quantum Summation |
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| Authors: | Xiu-Bo Chen Gang Xu Yi-Xian Yang and Qiao-Yan Wen |
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| Institution: | 1.State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing,China;2.Key Laboratory of Network and Information Attack and Defense Technology of MOE,Beijing University of Posts and Telecommunications,Beijing,China;3.College of Mechanical Engineering,Taiyuan University of Technology,Taiyuan,China |
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| Abstract: | In this paper, a new and efficient quantum protocol which allows a group of mutually distrustful players to perform the summation
computation is proposed. Different from previous protocols, we utilize the multi-particle entangled states as the information
carriers. A third party, i.e. TP, is assumed semi-honest in the two-party quantum summation protocol. All various kinds of
outside attacks and participant attacks are discussed in detail. In addition, we code all players’ Bell-basis measurement
outcomes into one classical bit (cbit). Not only the cost of classical information in the public communication network is
decreased, but also the security of the protocol is improved. The protocol is also generalized into multi-party quantum summation.
It is secure for the collusive attack performed by at most n−2 players. |
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| Keywords: | |
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