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Enforcing policy and data consistency of cloud transactions

Iskander, MK and Wilkinson, DW and Lee, AJ and Chrysanthis, PK (2011) Enforcing policy and data consistency of cloud transactions. In: UNSPECIFIED UNSPECIFIED, 253 - 262. ISBN 9780769543864

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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 a 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 present the first formalization of the concept of trusted transactions when dealing with proofs of authorizations. Accordingly, we define different 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, that is a modified version of the basic Two-Phase Commit protocols. We finally provide performance analysis of the different presented approaches to guide the decision makers in which approach to use. © 2011 IEEE.


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Item Type: Book Section
Status: Published
CreatorsEmailPitt UsernameORCID
Iskander, MK
Wilkinson, DW
Lee, AJadamlee@pitt.eduADAMLEE
Chrysanthis, PKpanos@pitt.eduPANOS0000-0001-7189-9816
Date: 9 September 2011
Date Type: Publication
Journal or Publication Title: Proceedings - International Conference on Distributed Computing Systems
Page Range: 253 - 262
Event Type: Conference
DOI or Unique Handle: 10.1109/icdcsw.2011.42
Schools and Programs: Dietrich School of Arts and Sciences > Computer Science
Refereed: Yes
ISBN: 9780769543864
Date Deposited: 28 Nov 2012 22:40
Last Modified: 08 Feb 2020 16:55


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