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. © 2017 Inderscience Enterprises Ltd.

Shynu P-G

Department of Computer Applications

School of Information Technology and Engineering

Vellore Campus

John Singh K

Department of Information Technology

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

A novel temporal access control scheme for outsourced data in cloud with user revocation

Electronic Government, an International Journal

AbstractCloud computing has emerged as the most dominant computational paradigm in recent times. There are tremendous benefits for enterprises adopting cloud technologies. It provides resources and services on demand, pay-as-you go basis. This includes infrastructure, platform and software services. But there are still a number of security threats and challenges associated with utilizing cloud computing. A proper access control is the fundamental security requirement in any cloud environment, to avoid unauthorized access to the cloud systems. As cloud computing supports multi-tenancy and has a various categories of users with different sets of security requirements, traditional access control models and policies cannot be used. This paper discusses on various access control models used for cloud environment and presents a detailed requirement analysis for developing an access control, specifically for the cloud. A comprehensive study on various security problems associated with outsourced data on the cloud and their existing solutions are also described, with the future research directions.

Fulltext

Cybernetics and Information Technologies

A Comprehensive Survey and Analysis on Access Control Schemes in Cloud Environment

IEEE Systems Journal

User Collusion Avoidance CP-ABE With Efficient Attribute Revocation for Cloud Storage

Advances in Intelligent Systems and Computing Information Technology and Intelligent Transportation Systems

CP-ABE Based Access Control for Cloud Storage

Enhancing the use of e-learning systems in the public sector: a behavioural intention perspective

Information and Software Technology

Empirical evaluation of a cloud computing information security governance framework

Journal	Electronic Government, an International Journal
Publisher	Inderscience Publishers
ISSN	1740-7494
Open Access	0