Authors: P.G. Shynu; K. John Singh
Addresses: School of Information Technology & Engineering, VIT University, Vellore, Tamil Nadu, 632014, India ' School of Information Technology & Engineering, VIT University, Vellore, Tamil Nadu, 632014, India
Abstract: E-governance can be implemented very effectively using the cloud computing technologies. Security and privacy of data are the major challenges in cloud-based e-governance systems. With proper access control and user revocation schemes, we can protect the privacy and security of data stored in cloud servers used for e-governance. There are a lot of techniques to achieve the controlled access in cloud computing. In some applications of e-government, the users should be allowed to access data, only for a specific period of time. In this paper, we introduce a temporal access control scheme based on attribute-based encryption (ABE), which allows users to access the data according to their access policy and for a specific time period only. Our model includes both the temporal access scheme and a time-based proxy re-encryption scheme to allow a user's access right to expire automatically.
Keywords: cloud computing; access control; user revocation; privacy and security in e-governance; ABE; attribute-based encryption.
Electronic Government, an International Journal, 2017 Vol.13 No.3, pp.274 - 286
Received: 13 Jan 2017
Accepted: 31 Mar 2017
Published online: 09 Sep 2017 *