Paper 2023/922
mR$_{\text{LWE}}$-CP-ABE a revocable CP-ABE for Post-Quantum Cryptography
, Roma Tre University, Roma Tre University, Istituto per le Applicazioni del Calcolo Mauro Picone, Roma Tre UniversityAbstract
We address the problem of user fast revocation in the lattice based CP-ABE by extending the scheme originally introduced in [A ciphertext policy attribute-based encryption scheme without pairings. J. Zhang, Z. Zhang - ICISC 2011]. While a lot of work exists on the construction of revocable schemes for CP-ABE based on pairings, works based on lattices are not so common, and – to the best of our knowledge – we introduce the first server-aided revocation scheme in a lattice based CP-ABE scheme, hence providing post-quantum safety. In particular, we rely on semi-trusted "mediators" to provide a multi-step decryption capable of handling mediation without re-encryption. We comment on the scheme and its application and we provide performance experiments on a prototype implementation in the ABE spin-off library of Palisade to evaluate the overhead compared with the original scheme.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Preprint.
- Keywords
- Mediated CP-ABELattice-based cryptographyLearning with ErrorsPost quantum cryptographyCloud cryptography
- Contact author(s)
-
mcianfriglia @ uniroma3 it
eonofri @ uniroma3 it
mpedicini @ uniroma3 it - History
- 2023-06-14: approved
- 2023-06-13: received
- See all versions
- Short URL
- https://ia.cr/2023/922
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2023/922,
author = {Marco Cianfriglia and Elia Onofri and Marco Pedicini},
title = {mR$_{\text{LWE}}$-CP-ABE a revocable CP-ABE for Post-Quantum Cryptography},
howpublished = {Cryptology ePrint Archive, Paper 2023/922},
year = {2023},
note = {\url{https://eprint.iacr.org/2023/922}},
url = {https://eprint.iacr.org/2023/922}
}
