Multi-party quantum private comparison protocol based on $$d$$ d -dimensional entangled states

Multi-party quantum private comparison protocol based on $$d$$ d -dimensional entangled states In this paper, a novel quantum private comparison protocol with $$l$$ l -party and $$d$$ d -dimensional entangled states is proposed. In the protocol, $$l$$ l participants can sort their secret inputs in size, with the help of a semi-honest third party. However, if every participant wants to know the relation of size among the $$l$$ l secret inputs, these two-participant protocols have to be executed repeatedly $$\frac{l(l-1)}{2}$$ l ( l - 1 ) 2 times. Consequently, the proposed protocol needs to be executed one time. Without performing unitary operation on particles, it only need to prepare the initial entanglement states and only need to measure single particles. It is shown that the participants will not leak their private information by security analysis. Quantum Information Processing Springer Journals

Multi-party quantum private comparison protocol based on $$d$$ d -dimensional entangled states

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Springer US
Copyright © 2014 by Springer Science+Business Media New York
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
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