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

To manage outsourced encrypted data sharing in clouds, attribute-based proxy re-encryption (ABPRE) has become an elegant primitive. In ABPRE, a cloud server can transform an original recipient's ciphertext to a new one of a shared user's. As the transformation is computation consuming, a m...

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Bibliographic Details
Published in:IEEE transactions on dependable and secure computing Vol. 19; no. 5; pp. 2907 - 2919
Main Authors: Ge, Chunpeng, Susilo, Willy, Baek, Joonsang, Liu, Zhe, Xia, Jinyue, Fang, Liming
Format: Journal Article
Language:English
Published: Washington IEEE 01.09.2022
IEEE Computer Society
Subjects:
Algorithms
Attribute-based proxy re-encryption
Bioinformatics
Cloud computing
Cryptography
Cybersecurity
Data encryption
Data retrieval
data sharing
Encryption
fairness
Genomics
Information sharing
Neurology
Servers
Systems architecture
verifiability
ISSN:1545-5971, 1941-0018
Online Access:Get full text
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Summary:To manage outsourced encrypted data sharing in clouds, attribute-based proxy re-encryption (ABPRE) has become an elegant primitive. In ABPRE, a cloud server can transform an original recipient's ciphertext to a new one of a shared user's. As the transformation is computation consuming, a malicious cloud server may return an incorrect re-encrypted ciphertext to save its computation resources. Moreover, a shared user may accuse the cloud server of returning an incorrect re-encrypted ciphertext to refuse to pay the cost of using the cloud service. However, existing ABPRE schemes do not support a mechanism to achieve verifiability and fairness. In this article, a novel verifiable and fair attribute-based proxy re-encryption (VF-ABPRE) scheme is introduced to support verifiability and fairness. The verifiability enables a shared user to verify whether the re-encrypted ciphertext returned by the server is correct and the fairness ensures a cloud server escape from malicious accusation if it has indeed conducted the re-encryption operation honestly. Additionally, we conduct a performance experiment to show the efficiency and practicality of the new VF-ABPRE scheme.
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ISSN:1545-5971
1941-0018
DOI:10.1109/TDSC.2021.3076580