Privacy-Preserving Attribute-Based Access Control with Non-Monotonic Access Structure

Attribute-Based Encryption (ABE) with non-monotonic access policies provides fine-grained access control for widespread applications like Cloud-assisted HealthIoT systems. In this context, multi-authority ABE with untrusted authorities eliminates the need for a trusted authority, but ensuring user&#...

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Bibliographic Details
Main Authors: Ashouri-Talouki, Maede, Kahani, Nafiseh, Barati, Masoud
Format: Conference Proceeding
Language:English
Subjects:
ABE access control
Access control
Cloud computing
Costs
Data privacy
Encryption
HealthIoT systems
Internet of Things (IoT)
Non-monotonic access structure
Privacy
Resistance
Scalability
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Summary:Attribute-Based Encryption (ABE) with non-monotonic access policies provides fine-grained access control for widespread applications like Cloud-assisted HealthIoT systems. In this context, multi-authority ABE with untrusted authorities eliminates the need for a trusted authority, but ensuring user's identity and attributes-set privacy against these authorities remains a significant challenge. This paper proposes a new, efficient multi-authority ABE approach that preserves user's identity privacy and attributes-set privacy, and is secure against collusion attack. Also, the proposed approach provides non-monotonic access policies, which supports positive and negative constraints using NOT operation as well as AND and OR operations.
ISSN:2768-0029
DOI:10.1109/CSNet59123.2023.10339750