Paper 2023/1814
Easy-ABE: An Easy Ciphertext-Policy Attribute-Based Encryption
Abstract
Attribute-Based Encryption is widely recognized as a leap forward in the field of public key encryption. It allows to enforce an access control on encrypted data. Decryption time in ABE schemes can be long depending on the number of attributes and pairing operations. This drawback hinders their adoption on a broader scale. In this paper, we propose a non-monotone CP-ABE scheme that has no restrictions on the size of attribute sets and policies, allows fast decryption and is adaptively secure under the CBDH-3 assumption. To achieve this, we approached the problem from a new angle, namely using a set membership relation for access structure. We have implemented our scheme using the Charm framework and the source code is available on GitHub. Easy-ABE performs better than FAME an FABEO.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. 15th International Conference, SecITC 2022
- DOI
- 10.1007/978-3-031-32636-3_10
- Keywords
- attribute-based encryptionCBDH-3 assumptionnon-monotonerandom oracle model
- Contact author(s)
- ahmadkhoureich ka @ uadb edu sn
- History
- 2024-02-15: last of 2 revisions
- 2023-11-24: received
- See all versions
- Short URL
- https://ia.cr/2023/1814
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2023/1814,
author = {Ahmad Khoureich Ka},
title = {Easy-ABE: An Easy Ciphertext-Policy Attribute-Based Encryption},
howpublished = {Cryptology ePrint Archive, Paper 2023/1814},
year = {2023},
doi = {10.1007/978-3-031-32636-3_10},
note = {\url{https://eprint.iacr.org/2023/1814}},
url = {https://eprint.iacr.org/2023/1814}
}
