Cryptanalysis and improvement of several quantum private comparison protocols

Zhao-Xu Ji, Pei-Ru Fan, Huan-Guo Zhang +1

Recently, Wu et al. [Int. J. Theor. Phys. 58, 1854, (2019)] found a serious information leakage problem in Ye and Ji's quantum private comparison protocol [Int. J. Theor. Phys. 56,…