Authors: Yong-Woon Hwang; Im-Yeong Lee
Addresses: Department of Computer Science and Engineering, Soonchunhyang University, Asan, South Korea ' Department of Computer Science and Engineering, Soonchunhyang University, Asan, South Korea
Abstract: With the development of cloud computing, users can store data externally and share it with other users. However, since various security threats exist in a network environment connected to an external cloud, security technology is required. CP-ABE provides data encryption, decryption, and access control. However, in the existing CP-ABE method, third parties may violate the privacy of users by inferring the attributes of users accessing data with the access structure contained in the ciphertext. In addition, the cloud server cannot guarantee the confidentiality of the data because it decrypts the encrypted text requested by the user and identifies and delivers the data. In this paper, we proposed a new ACP-ABE-SE data sharing system that combines anonymous CP-ABE and searchable encryption, solving user privacy and data confidentiality issues. Therefore, it can be used in an environment where data can be shared safely and efficiently in a cloud environment.
Keywords: cloud security; CP-ABE; anonymous; searchable encryption; attribute-based encryption; ABE.
International Journal of Web and Grid Services, 2021 Vol.17 No.3, pp.201 - 220
Received: 28 Jul 2020
Accepted: 02 Nov 2020
Published online: 27 Jul 2021 *