A Multi-Level Privacy Scheme for Securing Data in a Cloud Environment

  • Ezekiel K. OlatunjiEmail author
  • Matthew O. Adigun
  • Paul Tarwireyi
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 313)


Privacy concern is often cited as one of the key factors that impede large-scale adoption of the cloud computing paradigm by enterprise customers. Existing solutions to privacy issue with respect to cloud computing, commonly through encryption mechanisms, often result in performance problem. This paper proposes and presents a multi-level privacy support scheme for addressing the trade-off between privacy of user’s data stored in the cloud and system performance. This is achieved by using encryption algorithms with varying strengths to protect the privacy of different categories of user’s data depending on their privacy sensitivity. Simulation results, using Jindael AES encryption algorithm as case study, lends credence to the efficacy of the proposed privacy scheme.


Cloud computing Data privacy Encryption algorithm System performance 



This work is based on the research supported in part by the National Research Foundation of South Africa—Grant UID: TP11062500001 (2012–2014). The authors also acknowledge funds received from industry partners: Telkom SA Ltd, Huawei Technologies SA (Pty) Ltd and Dynatech Information Systems, South Africa in support of this research.


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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Ezekiel K. Olatunji
    • 1
    Email author
  • Matthew O. Adigun
    • 1
  • Paul Tarwireyi
    • 1
  1. 1.Department of Computer ScienceUniversity of ZululandKwadlangezwaSouth Africa

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