Paper 2026/1185 Original: eprint.iacr.org/2026/1185 ↗
A Note on ``Secure and Efficient Data Deduplication in JointCloud Storage''
Abstract
We show that the data deduplication scheme [IEEE Trans. Cloud Comput., 11(1), 156-167, 2023] is flawed due to some inconsistent computations. The scheme tries to propose a hybrid encryption and authentication mechanism based on RSA cryptosystem and pairing cryptosystem, but it has confused the different group operations. In the data sharing phase, the cloud service provider cannot determine which stored tag matches the temporary tag, and fails to return the stored data to the requester. To fix, it should explicitly specify which is randomized by modular exponentiation with an RSA modulus, and which is randomized by point multiplication over the underlying elliptic curve.
Metadata
- Available format(s)
PDF- Category
- Attacks and cryptanalysis
- Publication info
- Preprint.
- History
- 2026-06-05: last updated
- 2026-06-05: published
- Short URL
- https://ia.cr/2026/1185
- License
- https://creativecommons.org/publicdomain/zero/1.0/
BibTeX
@misc{cryptoeprint:2026/1185,
author = {Zhengjun Cao and Lihua Liu},
title = {A Note on ``Secure and Efficient Data Deduplication in JointCloud Storage''},
howpublished = {Cryptology {ePrint} Archive, Paper 2026/1185},
year = {2026},
url = {https://eprint.iacr.org/2026/1185}
}