Welcome to the ADMT Publication Server

Balancing Performance, Accuracy, and Precision for Secure Cloud Transactions

DocUID: 2014-005 Full Text: PDF

Author: Marian K. Iskander, Tucker Trainor, Dave W. Wilkinson, Adam J. Lee, Panos K. Chrysanthis

Abstract: In distributed transactional database systems deployed over cloud servers, entities cooperate to form proofs of authorizations that are justified by collections of certified credentials. These proofs and credentials may be evaluated and collected over extended time periods under the risk of having the underlying authorization policies or the user credentials being in inconsistent states. It therefore becomes possible for policy-based authorization systems to make unsafe decisions that might threaten sensitive resources. In this paper, we highlight the criticality of the problem. We then define the notion of trusted transactions when dealing with proofs of authorization. Accordingly, we propose several increasingly stringent levels of policy consistency constraints, and present different enforcement approaches to guarantee the trustworthiness of transactions executing on cloud servers. We propose a Two-Phase Validation Commit protocol as a solution, which is a modified version of the basic Two-Phase Validation Commit protocols. We finally analyze the different approaches presented using both analytical evaluation of the overheads and simulations to guide the decision makers to which approach to use.

Keywords: distributed transactions, atomic commit protocol, Cloud databases, authorization policies, consistency

Published In: IEEE Transactions on Parallel & Distributed Systems

ISBN: 1045-9219

Volume: 25Number: 2Pages: 417-426

Year Published: 2014

Note: Date of on-line publication: 02 July 2013

DOI: 10.1109/TPDS.2013.169

Project: Others Subject Area: Commit Protocols, Data Privacy, Data Management on the Cloud

Publication Type: Journal Paper

Sponsor: NSF IIS-1050301

Citation:Text Latex BibTex XML Marian K. Iskander, Tucker Trainor, Dave W. Wilkinson, Adam J. Lee, and Panos K. Chrysanthis. Balancing Performance, Accuracy, and Precision for Secure Cloud Transactions. IEEE Transactions on Parallel & Distributed Systems. 25(2):417-426. 2014. DOI: 10.1109/TPDS.2013.169. (Note: Date of on-line publication: 02 July 2013).