Strong Privacy-preserving Two-party Scalar Product Quantum Protocol

  • Run-hua Shi
  • Mingwu ZhangEmail author


Under the assumption that the parties do not change their private inputs during the whole protocol execution, we present a probabilistic quantum protocol for secure two-party scalar product without the help of any third party, which can ensure the security of the strong privacy of two parties. Especially, the communication complexity of this protocol achieves O(1), and thus it is more suitable for applications with big data.


Quantum Cryptography Privacy-Preserving Multi-party Secure Computation Scalar Product 



This work was supported by National Natural Science Foundation of China (No.61772001 and 61672010).


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Authors and Affiliations

  1. 1.School of Computer ScienceHubei University of TechnologyWuhan CityChina
  2. 2.School of Control and Computer EngineeringNorth China Electric Power UniversityBeijing CityChina

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