Auditable attribute-based data access control using blockchain in cloud storage

【Author】 Arasi, V. Ezhil; Gandhi, K. Indra; Kulothungan, K.

【Source】JOURNAL OF SUPERCOMPUTING

【影响因子】2.557

【Abstract】Data security in cloud data sharing system is effectively ensured by data access control mechanism. Data access control becomes more challenging because of intruders and malicious cloud servers. Most of the traditional approaches do not consider the issues in controlling user accessing cloud data storage and sharing. Ciphertext policy attribute-based encryption is one of the most effective techniques that provide secure data access control for sensitive data outsourced in cloud storage. However, in traditional cloud data sharing system, there are several issues regarding transaction traceability, user authorization, data ownership management and access control preservation. Also, traditional access control schemes do not have an effective method to compensate cloud users whose data integrity is lost. To handle these issues, we propose a new data sharing system auditable attribute-based encryption scheme that integrates the advantages of blockchain technology with attribute-based access control. We designed a trustworthy scheme which uses blockchain to provide attribute-based secure data sharing with integrity auditing. It also provides compensation to data owners, if their data integrity is lost. The security analysis demonstrates the improvement in performance of the proposed access control scheme over existing data sharing schemes. It provides efficient and secure data sharing, reliable traceability and equitable mediation. Thus, the proposed approach preserves the integrity, privacy, security and consistency of the stored data, thereby guaranteeing authorized data access control to cloud users.

【Keywords】CP-ABE; Data sharing; Access policy; Data access control; Blockchain; Smart contract

【发表时间】

【收录时间】2022-02-06

【文献类型】期刊

【主题类别】

区块链技术--