Paper 2022/581 Original: eprint.iacr.org/2022/581 ↗
Cryptanalysis of an Identity-Based Provable Data Possession Protocol with Compressed Cloud Storage
Abstract
This letter addresses some security issues of an identity-based provable data possession protocol with compressed cloud storage (published in IEEE TIFS, doi:10.1109/TIFS.2022. 3159152). Some serious flaws are identified and an attack to the protocol is designed. This attack is able to recover the ephemeral secret keys from two encrypted blocks with high probability to reveal the original plaintext file completely. Moreover, an adversary can impersonate a data owner to outsource any file to the cloud in a malicious way. The main ingredients of the attack is some classical number theoretic results.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2022-05-20: last updated
- 2022-05-16: published
- Short URL
- https://ia.cr/2022/581
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2022/581,
author = {Lidong Han and Guangwu Xu and Qi Xie and Xiao Tan and Chengliang Tian},
title = {Cryptanalysis of an Identity-Based Provable Data Possession Protocol with Compressed Cloud Storage},
howpublished = {Cryptology {ePrint} Archive, Paper 2022/581},
year = {2022},
url = {https://eprint.iacr.org/2022/581}
}