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A Dynamic Cloud with Data Privacy Preservation

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A Dynamic Cloud with Data Privacy Preservation UC Merced UC Merced Electronic Theses and Dissertations Title A Dynamic Cloud with Data Privacy Preservation Permalink https://escholarship.org/uc/item/03g6171c Author Bahrami, Mehdi Publication Date 2016 License https://creativecommons.org/licenses/by/4.0/ 4.0 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California A Dynamic Cloud with Data Privacy Preservation by Mehdi Bahrami A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Electrical Engineering and Computer Science in the Graduate Division of the University of California, Merced Committee in charge: Professor Mukesh Singhal, Chair Professor Florin Rusu Professor Dong Li 1Professor Hamid R. Arabnia 1(External Committee Member, University of Georgia) Fall 2016 A Dynamic Cloud with Data Privacy Preservation Copyright 2017 by Mehdi Bahrami The Dissertation of Mehdi Bahrami is approved, and it is acceptable in quality and form for publication on microfilm and electronically: Professor Mukesh Singhal ______________________________________________________________________________ Professor Dong Li ____________________________________________________________________________ Professor Florin Rusu ______________________________________________________________________________ Professor Hamid R. Arabnia (University of Georgia) ______________________________________________________________________________ ______________________________________________________________________________ Co-Chair (if applicable) Professor Mukesh Singhal ______________________________________________________________________________ Chair University of California, Merced 2016 i Abstract A Dynamic Cloud with Data Privacy Preservation by Mehdi Bahrami Doctor of Philosophy in Electrical Engineering and Computer Science University of California, Merced Professor Mukesh Singhal The emerging field of Cloud Computing provides elastic on-demand services over the Internet or over a network. According to the International Data Corporation (IDC), cloud computing has two major issues: i) architecture issues, such as a lack of standardization, a lack of customization; and ii) users’ data privacy. In this study we focus on these issues. We are facing an increasing demand for migration of varieties of traditional databases and computation services to cloud computing environments, i.e., database-as-a-service. Although each service offers a new feature, it escalates standardization and customization issues due to the lack of standardization between cloud vendors and service customization because each cloud-based service has its own features, requirements and outputs. In the first part of this study, we propose a cloud architecture based on a Service-Oriented Architecture (DCCSOA) that enhances our ability to do standardization and customization in the cloud. The proposed architecture uses a single layer, which is called Dynamic Template Service Layer (DTSL), that provides the following operations and advantages: i) enables a single service layer to interact with all native cloud services (e.g., IaaS, PaaS, SaaS and any cloud-based services); ii) provides a standardization for existing services and future services in the cloud; iii) customizes native cloud services based on users’ group requests. The second part of this study focuses on users’ data privacy preservation on the proposed architecture. Users’ data privacy can be violated by the cloud vendor, the vendor’s authorized users, other cloud users, unauthorized users, or external malicious entities. Encryption of data on client side is one of the solutions to preserve data privacy in the cloud; however, encryption methods are complex and expensive for mobile devices to encrypt and decrypt each file, such as smart phones. We propose a novel light-weight data privacy method (DPM) by using a chaos system for mobile cloud users to store data on multiple clouds. The proposed method enables mobile users to store data in the clouds while it preserves users’ data privacy. ii We consider different technologies to deploy our proposed data privacy preservation method on DCCSOA, including the mobile devices, the Internet-of-things (IoT), and Graphic Processing Unit (GPU)-based computing. We also consider different use case scenarios for the proof of concept, including data privacy preservation for users’ photos in smart phones, sensitive electronic health records protection in the cloud, and data privacy preservation for cloud-based databases. We evaluate both the proposed dynamic architecture and the proposed data privacy preservation method. Our experimental results show that on the one hand DCCSOA enhances standardization by offering a flexible cloud architecture and minimizing the modification on the native cloud services; on the other hand, DPM achieves a superior performance over regular encryption methods in regard to computation time. iii To my Mother, Sisters, Brother, and Yuliya for their endless love, invaluable support, motivation and encouragement In Memory of My Father who was a great and kind teacher, and an invaluable supportive person and who always encouraged me to study, to teach and to complete this work This work would not have been possible without all your support. iv Contents A Dynamic Cloud with Data Privacy Preservation ....................................................................... i Abstract ................................................................................................................................................ i Contents ............................................................................................................................................. iv List of Figures .................................................................................................................................... x List of Tables .................................................................................................................................... xii List of Algorithms ......................................................................................................................... xiii List of Codes ....................................................................................................................................xiv Acknowledgements ........................................................................................................................ xv Organization of this thesis and contributions ............................................................................. 1 Chapter 1 ..................................................................................................................................... 3 Introduction ........................................................................................................................................ 3 Introduction ............................................................................................................................ 3 Big Data Definition ................................................................................................................ 5 Opportunities and Challenges ............................................................................................. 6 Storage Issues ........................................................................................................................ 7 Computing Issues .................................................................................................................. 8 Transfer Issues .................................................................................................................. 8 Cloud Computing .................................................................................................................. 8 On-demand Elastic Service ................................................................................................... 9 Resource pooling................................................................................................................... 9 Service Accessibility ......................................................................................................... 9 Measured Service ............................................................................................................ 10 1.4.2 Cloud Architecture .......................................................................................................... 10 The Role of Infrastructure-as-a-Service (IaaS) ................................................................... 11 The Role of Platform-as-a-Service (PaaS) .......................................................................... 12 The Role of Software-as-a-Service (SaaS) ..................................................................... 13 The Role of Business Intelligence (BI) ........................................................................... 14 v Other Service Layers ........................................................................................................... 15 Big Data Tools ....................................................................................................................... 15 Implementation Models of Cloud Computing Systems ................................................. 18 Cloud Computing Issues .................................................................................................... 19 Chapter Summary ...............................................................................................................
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