A Verifiable and Fair Attribute-Based Proxy Re-Encryption Scheme for Data Sharing in Clouds

Project Code :TCMAPY1020

Objective

The objective of this study is to introduce a novel verifiable and fair attribute-based proxy re-encryption (VF-ABPRE) scheme to manage outsourced encrypted data in cloud environments. The scheme ensures both verifiability, allowing shared users to confirm the correctness of re-encrypted data, and fairness, protecting cloud servers from false accusations by verifying honest re-encryption operations. Performance evaluations validate the scheme's efficiency and practicality.

Abstract

This paper introduces a novel approach, VF-ABPRE, for secure data sharing in cloud services using attribute-based proxy re-encryption (ABPRE). ABPRE allows a cloud server to transform a recipient's data for shared users, but existing methods lack verifiability and fairness. VF-ABPRE addresses this by enabling users to check if the transformed data is correct and ensuring fairness for the cloud server. The study includes a performance experiment demonstrating the efficiency of VF-ABPRE. This approach enhances the security of data sharing in the cloud by preventing incorrect transformations and protecting the cloud server from unfounded accusations.

KEYWORDS: Attribute-based proxy re-encryption, Data sharing, Cloud computing, Verifiability, Fairness.

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