Attribute-Based Proxy Re-Encryption With Direct Revocation Mechanism for Data Sharing in Clouds

doi:10.1109/TDSC.2023.3265979

Attribute-Based Proxy Re-Encryption With Direct Revocation Mechanism for Data Sharing in Clouds

2024-03-01

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DOI：10.1109/TDSC.2023.3265979

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Cloud computing, which provides adequate storage and computation capability, has been a prevalent information infrastructure. Secure data sharing is a basic demand when data was outsourced to a cloud server. Attribute-based proxy re-encryption has been a promising approach that allows secure encrypted data sharing on clouds. With attribute-based proxy re-encryption, a delegator can designate a set of shared users through issuing a re-encryption key which will be used by the cloud server to transform the delegator's encrypted data to the shared users'. However, the existing attribute-based proxy re-encryption schemes lack a mechanism of revoking users from the sharing set which is critical for data sharing systems. Therefore, in this article, we propose a concrete attribute-based proxy re-encryption with direct revocation mechanism (ABPRE-DR) for encrypted data sharing that enables the cloud server to directly revoke users from the original sharing set involved in the re-encryption key. We implemented the new schemes and evaluated its performance. The experimental results show that the proposed ABPRE-DR scheme is efficient and practical.

Keywords:

Servers

Cloud computing

Encryption

Collaboration

Systems architecture

Neuroscience

Maintenance engineering

Attribute-based encryption

data sharing

cloud computing

revocation

Attribute-Based Proxy Re-Encryption With Direct Revocation Mechanism for Data Sharing in Clouds

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