Quantum private comparison of equality protocol without a third party

Jason Lin, Chun Wei Yang, Tzonelih Hwang

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


This paper presents a novel quantum private comparison protocol that uses Einstein–Podolsky–Rosen pairs. The proposed protocol allows two parties to secretly compare their information without exposing their actual contents. The technique of entanglement swapping enables the comparison to be achieved without the help of a third party. Moreover, because the proposed protocol employs one-step transmission and decoy photons, it is secure against the various quantum attacks in existence thus far.

Original languageEnglish
Pages (from-to)239-247
Number of pages9
JournalQuantum Information Processing
Issue number2
Publication statusPublished - 2014 Feb 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Statistical and Nonlinear Physics
  • Theoretical Computer Science
  • Signal Processing
  • Modelling and Simulation
  • Electrical and Electronic Engineering


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