Paper 2024/1160

Post-Quantum Access Control with Application to Secure Data Retrieval

Behzad Abdolmaleki, University of Sheffield
Hannes Blümel, Barkhausen Institute
Giacomo Fenzi, EPFL
Homa Khajeh, Independent researcher
Stefan Köpsell, Barkhausen Institute
Maryam Zarezadeh, Barkhausen Institute
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
Creative Commons Attribution
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}
}
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