How Much Enhancing Confidentiality and Integrity on Data Can Affect Mobile Multi-Cloud: The "ARIANNA" Experience

Ensuring confidentiality and integrity on data in Cloud computing is still a big challenge. With the advent of the 'Mobile Cloud Computing (MCC)", confidentiality and integrity issues has reemerged inheriting all the limitations introduced by the use of the mobile devices. ARIANNA is an Android application representing the software enabler which allows to extend the SSME Cloud Service, the experimental multi-Cloud system deployed and maintained at the "Cloud Data Center - University of Messina", towards the mobile world represented by the smart devices. In this paper, we present a quantitative performance analysis comparing some commercial Cloud storage services such as Google Drive, Dropbox and OpenStack Swift, with the multi-Cloud approach enabled by the ARIANNA application. In order to evaluate "how much" the overhead introduced by ARIANNA approach costs, we conducted several experiments taking into account the mobile application in real and dynamic multi-Cloud scenarios. The paper discusses some consideration about the actual adoptability of this approach in real application domain and some software and architectural improvements to further improve ARIANNA's performance.