A Note on ``Privacy Preserving n-Party Scalar Product Protocol''

Lihua Liu

Paper 2024/1102

A Note on ``Privacy Preserving n-Party Scalar Product Protocol''

Lihua Liu, Shanghai Maritime University

Abstract

We show that the scalar product protocol [IEEE Trans. Parallel Distrib. Syst. 2023, 1060-1066] is insecure against semi-honest server attack, not as claimed. Besides, its complexity increases exponentially with the number $n$ , which cannot be put into practice.

Metadata

Available format(s): PDF
Category: Attacks and cryptanalysis
Publication info: Preprint.
Keywords: privacy preserving scalar product semi-honest server attack diagonal matrix trace map
Contact author(s): liulh @ shmtu edu cn
History: 2024-07-08: approved; 2024-07-06: received; See all versions
Short URL: https://ia.cr/2024/1102
License: CC0

BibTeX

@misc{cryptoeprint:2024/1102,
      author = {Lihua Liu},
      title = {A Note on ``Privacy Preserving n-Party Scalar Product Protocol''},
      howpublished = {Cryptology {ePrint} Archive, Paper 2024/1102},
      year = {2024},
      url = {https://eprint.iacr.org/2024/1102}
}