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Attribute-Based Data Sharing Scheme With Flexible Search Functionality for Cloud-Assisted Autonomous Transportation System
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DOI：10.1109/TII.2023.3242815.png)
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Abstract
En 中文
The existing group public key encryption with equality test schemes could only support one-to-one data sharing and are not suitable for cloud-assisted autonomous transportation systems, which demand one-to-many data sharing. To tackle this problem efficiently, in this article, we put forward the group-attribute-based encryption with equality test (G-ABEET) scheme. The presented G-ABEET allows sensors equipped in vehicles to encrypt traffic data with an expressive access policy before sharing it. Only users with attributes required by the access policy ought to access the shared ciphertexts, thus achieving selective one-to-many data sharing. Meanwhile, the authorized cloud server could provide group users with equality tests over the ciphertexts, realizing ciphertext search ability. Furthermore, with the group mechanism, the G-ABEET scheme could resist offline message recovery attacks. Besides, in the standard model, we give rigorous security proof of the G-ABEET construction. The feasibility and efficiency of G-ABEET are demonstrated by experimental simulations.
Keywords:
Encryption
Servers
Cloud computing
Integrated circuits
Transportation
Receivers
Informatics
Attribute-based encryption with equality test (ABEET)
autonomous transportation systems (ATSs)
data sharing
group mechanism
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