A Note on ``Secure and Distributed IoT Data Storage in Clouds Based on Secret  Sharing and Collaborative Blockchain''

Zhengjun Cao; Lihua Liu

Paper 2024/1144 Original: eprint.iacr.org/2024/1144 ↗

A Note on ``Secure and Distributed IoT Data Storage in Clouds Based on Secret Sharing and Collaborative Blockchain''

Zhengjun Cao

Lihua Liu

Abstract

We show that the data storage scheme [IEEE/ACM Trans. Netw., 2023, 31(4), 1550-1565] is flawed due to the false secret sharing protocol, which requires that some random $4\times 4$ matrixes over the finite field $F_p$ (a prime $p$) are invertible. But we find its mathematical proof for invertibility is incorrect. To fix this flaw, one needs to check the invertibility of all 35 matrixes so as to generate the proper 7 secret shares.

Metadata

Available format(s): PDF
Category: Attacks and cryptanalysis
Publication info: Preprint.
History: 2024-07-14: last updated; 2024-07-14: published
Short URL: https://ia.cr/2024/1144
License: https://creativecommons.org/publicdomain/zero/1.0/

BibTeX

@misc{cryptoeprint:2024/1144,
      author = {Zhengjun Cao and Lihua Liu},
      title = {A Note on ``Secure and Distributed IoT Data Storage in Clouds Based on Secret  Sharing and Collaborative Blockchain''},
      howpublished = {Cryptology {ePrint} Archive, Paper 2024/1144},
      year = {2024},
      url = {https://eprint.iacr.org/2024/1144}
}