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Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud Hasen Nicanfar, S. Mohsen Amiri, Chunsheng Zhu, Peyman TalebiFard, Victor C.M. Leung, Panos Nasiopoulos WiNMoS Lab and DML Lab The University of British Columbia, Vancouver, BC, Canada Email: hasennic@ece.ubc.ca The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 1 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud Outline • Introduction • Background • Proposal • Analysis • Conclusion The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 2 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 3 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 4 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud Problem? • Maximizing the trust and minimizing the cost for the customers Contribution?  Formulate the problem  Propose a platform for the TRM system in Cloud  Target: Service delivery  Model: Multi-layer/tire Service Providers  Choosing the best provider: an application of the TRM system  Considering NIST & CSA: Definition, SLA, CloudTrust Protocol, PLA The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 5 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud Credits 1. S. P. Marsh, Formalising Trust as a Computational Concept. PhD thesis, University of Stirling, April 1994. 2. A. Fox, R. Griffith, A. Joseph, R. Katz, A. Konwinski, G. Lee, D. Patterson, A. Rabkin, and I. Stoica , “Above the clouds: A Berkeley view of cloud computing,” Dept. Electrical Eng. and Comput. Sciences, University of California, Berkeley, Rep. UCB/EECS, vol. 28, 2009. 3. Z. Xiao and Y. Xiao, “Security and Privacy in Cloud Computing,” accepted for publication in IEEE Communication Surveys & Tutorials, vol. 15, no. 12, pp. 843 – 859, Second Quarter 2013. 4. A. Das and M. M. Islam, “ SecuredTrust: A Dynamic Trust Computation Model for Secured Communication in Multiagent Systems,” Dependable and Secure Computing, IEEE Transactions on, vol. 9, no. 2, pp. 261 – 274, 2012. The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 6 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud Background • History of trust • Trust in social science • Trust in e-commerce • Trust in e-banking • Trust in information and communication technology (ICT) • ICT applications: Health care, smart grid, cloud computing … • More, in: ICN/CCN, Identity federation The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 7 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud Definitions • Trustor and trustee • Direct and indirect trust • Punishment • Recommendation • Reputation • Trust and Reputation Management (TRM) system • Central and Distributed TRM systems The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 8 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 9 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 10 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud Analysis • Security Analysis – Secure versus most of the TRM attacks • Implementation tip – Role of – CSC interests • Applicability: – Affect of the target price The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 11 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud Conclusion • Maximizing the trust and Minimizing the cost. • We formulated the problem in a multi layer chain of CSPs. • Proposed an efficient and practical TRM framework • It dynamically can be adapted to the service and countermeasures that are required by the CSC. • Our analysis showed that our system is secure to be used and reliable in cloud. • To extend: Adding cost minimization approaches; designing FnT(.); using this system to reduce the influence of the CSP with low trust value in order to have less impact on the trust value of the chain. The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 12 of 13

Service-Oriented Trust and Reputation Management System for Multi-Tier Cloud Thank you ! Questions? The 2nd IEEE International Conference on Cloud Networking (CloudNet), San Francisco, CA, Nov. 2013 13 of 13