Publication Type
Conference Proceeding Article
Version
publishedVersion
Publication Date
7-2024
Abstract
Attribute-based encryption (ABE) is an important technology in building access control systems with precise control and scalability. In an ABE system, there exists a private key generator (PKG) that issues all private keys. The PKG has a significant drawback referred to as the huge key management burden in large-scale user systems. To overcome this limitation, we propose a more flexible system that offers users the choice to utilize decryption keys either from the PKG or from trusted users to decrypt the ciphertext, reducing the workload of the PKG. Unfortunately, users are restricted to only receiving private keys from the PKG in most ABE schemes. Thus, our system ABE extends the ability of trusted users to generate and distribute decryption keys. Furthermore, decryption keys from trusted users possess equivalent decryption with a private key from the PKG when satisfying the cooperative access policy set by the encryptor. We define the concept of key cooperative ABE for the first time, presenting a key cooperative ABE scheme.
Keywords
Attribute-based encryption, Key management, Key cooperative, Trust delegation
Discipline
Information Security
Research Areas
Cybersecurity
Publication
Information Security and Privacy: 29th Australasian Conference, ACISP 2024, Sydney, July 15-17: Proceedings
Volume
14895
First Page
241
Last Page
260
ISBN
9789819750245
Identifier
10.1007/978-981-97-5025-2_13
Publisher
Springer
City or Country
Cham
Citation
HUANG, Luqi; SUSILO, Willy; YANG, Guomin; and GUO, Fuchun.
Key cooperative attribute-based encryption. (2024). Information Security and Privacy: 29th Australasian Conference, ACISP 2024, Sydney, July 15-17: Proceedings. 14895, 241-260.
Available at: https://ink.library.smu.edu.sg/sis_research/9283
Copyright Owner and License
Authors
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
https://doi.org/10.1007/978-981-97-5025-2_13
