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

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.
Keywords: Secure data storage secret sharing invertible matrix determinant
Contact author(s): liulh @ shmtu edu cn
History: 2024-07-15: approved; 2024-07-14: received; See all versions
Short URL: https://ia.cr/2024/1144
License: CC0

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},
      note = {\url{https://eprint.iacr.org/2024/1144}},
      url = {https://eprint.iacr.org/2024/1144}
}