Hierarchical Authority Based Weighted Attribute Encryption Scheme

Qiuting Tian¹, Dezhi Han¹ and Yanmei Jiang¹

College of Information Engineering, Shanghai Maritime University
Shanghai, China
{tqt2018, jym2097}@163.com, dzhan@shmtu.edu.cn

Abstract

With the development of cloud storage technology, data storage security has become increasingly serious. Aiming at the problem that existing attributebased encryption schemes do not consider hierarchical authorities and the weight of attribute. A hierarchical authority based weighted attribute encryption scheme is proposed. This scheme will introduce hierarchical authorities and the weight of attribute into the encryption scheme, so that the authorities have a hierarchical relationship and different attributes have different importance. At the same time, the introduction of the concept of weight makes this scheme more flexible in the cloud storage environment and enables fine-grained access control. In addition, this scheme implements an online/offline encryption mechanism to improve the security of stored data. Security proof and performance analysis show that the scheme is safe and effective, and it can resist collusion attacks by many malicious users and authorization centers. It is more suitable for cloud storage environments than other schemes.

Key words

cloud storage, attribute-based encryption, weighted attribute, access control, hierarchical authority

Digital Object Identifier (DOI)

https://doi.org/10.2298/CSIS180912027T

Publication information

Volume 16, Issue 3 (October 2019)
Recent Advances in Information Processing and Security
Year of Publication: 2019
ISSN: 2406-1018 (Online)
Publisher: ComSIS Consortium

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How to cite

Tian, Q., Han, D., Jiang, Y.: Hierarchical Authority Based Weighted Attribute Encryption Scheme. Computer Science and Information Systems, Vol. 16, No. 3, 797–813. (2019), https://doi.org/10.2298/CSIS180912027T