Paper 2024/1160
Post-Quantum Access Control with Application to Secure Data Retrieval
Abstract
Servan-Schreiber et al. (S&P 2023) presented a new notion called private access control lists (PACL) for function secret sharing (FSS), where the FSS evaluators can ensure that the FSS dealer is authorized to share the given function. Their construction relies on costly non-interactive secret-shared proofs and is not secure in post-quantum setting. We give a construction of PACL from publicly verifiable secret sharing (PVSS) under short integer solution (SIS). Our construction adapts the Gentry et al’s scheme (Eurocrypt 2022) for post-quantum setting based on learning with error assumption (LWE). The implementation of our PACL with different files showed that it is feasible even at different sizes, and should remain so even with large secret vectors. This construction has many applications for access control by applying FSS. We show how to apply the proposed PACL construction to secure data retrieval. We also present a scheme for secure data retrieval with access control, which might be of independent interest.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Preprint.
- Keywords
- Access controlFunction secret sharingLWEData retrievalPost-Quantum security.
- Contact author(s)
- maryam zarezadeh @ barkhauseninstitut org
- History
- 2024-07-19: approved
- 2024-07-17: received
- See all versions
- Short URL
- https://ia.cr/2024/1160
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2024/1160,
author = {Behzad Abdolmaleki and Hannes Blümel and Giacomo Fenzi and Homa Khajeh and Stefan Köpsell and Maryam Zarezadeh},
title = {Post-Quantum Access Control with Application to Secure Data Retrieval},
howpublished = {Cryptology {ePrint} Archive, Paper 2024/1160},
year = {2024},
url = {https://eprint.iacr.org/2024/1160}
}
