An adaptive trust model for software services in hybrid cloud environment

Authors:
S. Udhayakumar;S. Chandrasekaran;Latha Tamilselvan;Fareez Ahmed
Affiliations:
Computer Science and Engineering, B.S.Abdur Rahman University, Chennai, India;Information Technology Department, Rajalakshmi Engineering College, Anna University, Chennai, India;Information Technology Department, B.S.Abdur Rahman University, Chennai, India;Computer Science and Engineering, Anna University, Chennai, India
Venue:
Proceedings of the 15th WSEAS international conference on Computers
Year:
2011

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Abstract

The objective of the research work is to propose an adaptive trust model applicable for software services deployed in cloud environment. In the earlier security modeling of cloud based applications, the trust among various services are evaluated either based on Bayesian or fuzzy approaches which are not formally verified before composition. The reputations of the constituent domain specific services are evaluated to determine the overall trust of the demanded service assuming other infrastructure and platform services. The trust relation is migrated between various virtual services in the case of emergent termination or cancellation of the customer demand. The temporal nature of the concurrent service activation and their composition processes are synchronized for each session to complete within the expected time using a Pay First Serve Next (PFSN) technique. The model is formally specified and verified using Temporal Logic of Action (TLA+) and the adapting trust level is evaluated for a SMS Cloud Service Deployment.