A Comparative Study of Attribute-Based Encryption Schemes for Secure Cloud Data Outsourcing

Abstract

In the digital era, Cloud data outsourcing attracts lots of attention for data storage, retrieval, and sharing. To ensure data security, Attribute-based Encryption has been suggested by various researchers. According to the researchers, ABE (Attribute-based Encryption) is the most assuring method for granting cloud data owners and users to access data in a convenient manner. A set of attributes becomes an identifier for the user or owner to access data. It also successfully assimilates encryption and access control for sharing secret data among groups. Non-efficiency and non-existence of the attribute revocation mechanism is the open problem in an Attribute-Based Encryption Scheme. The two classes of Attribute based Encryption mechanism, such as CP-ABE (Ciphertext-Policy Attribute-based Encryption) and KP-ABE (Key Policy Attribute-based Encryption) concepts are utilized to solve various data sharing security issues in a cloud environment. In this paper, researchers suggested techniques based on Attribute based Encryption for secure data sharing in Cloud has been studied and compared with appropriate performance metrics.