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COMPREHENSIVE SYSTEM VERIFICATION IN CLOUD COMPUTING PLATFORMS Joshua Schiffman, Hayawardh Vijayakumar, Yuqiong Sun, a

Cloud computing offers on-demand resources with reduced administrative effort for developers However, fears of data loss and security breaches have stifled adoption by businesses and governments

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COMPREHENSIVE SYSTEM VERIFICATION IN CLOUD COMPUTING PLATFORMS Joshua Schiffman, Hayawardh Vijayakumar, Yuqiong Sun, a

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  1. Cloud computing offers on-demand resources with reduced administrative effort for developers • However, fears of data lossand security breacheshave stifled adoption by businesses and governments • Current system verification mechanisms are inflexibleand ill-suited for the complexity of cloud platforms • We present a cloud architecture that efficiently verifies comprehensive integrity requirements COMPREHENSIVE SYSTEM VERIFICATION IN CLOUD COMPUTING PLATFORMSJoshua Schiffman, Hayawardh Vijayakumar, Yuqiong Sun, and Trent Jaeger • Clouds complicate systemverification • Clouds hide physical machine identity • Application VMs depend on cloud nodes • Hosted applications may be affected byco-resident VMs • VM migration requires verification of new cloud node • Difficult to inspect runtime changes to VM configurations • Multiple administrative domains with differing integrity requirements: • Cloud administrators • Application developers • Data owners • Clients • Each wishes to verify the integrity of the components they rely upon in the cloud CLOUD VERIFIER Integrity Verification Proxy • Cloud-wide system integrity verification service • Ensures cloud node integrity based on cloud’s criteria • Clients verify the cloud verifier’s integrity can criteria • Clients own criteria is pushed to the target VM’s cloud node • An integrity verification proxy (IVP) monitors VM integrity • Cloud node service to enforce client criteria over connections • Mediates a TLS tunnel between client and a hosted VM • Monitors VM integrity both at loadtime and runtime • Uses VM introspection to track VM integrity enforcement CLOUD VERIFICATION CHALLENGES OPENSTACK INTEGRATION PUBLICATIONS • Currently integrating cloud verifier into the OpenStack cloud platform • Cloud verifier (CV) is an independent, verifiable service in the cloud • Added a nova-verifyproject to monitor nova-computeservers • Clients establish persistent tunnel to CV to detect reboots • IVP implementation being ported over to Intel chips from AMD. • Evaluating performance on several cloud applications • J. Schiffman, H. Vijayakumar, T. Jaeger. Verifying System Integrity by Proxy, 5th International Conference on Trust and Trustworthy Computing. • J. Schiffman, T. Moyer, H. Vijayakumar, T. Jaeger, and P. McDaniel. Seeding clouds with trust anchors. In Proceedings of the 2010 ACM workshop on Cloud computing security workshop (CCSW '10). New York, NY, USA, 43-46. • J. Schiffman, T. Moyer, T. Jaeger, and P. McDaniel. Network-based Root of Trust for Installation. IEEE Security & Privacy. 9(1), 40-48, 2011. • T. Jaeger and J. Schiffman, Outlook: Cloudy with a Chance of Security Challenges and Improvements, IEEE Security & Privacy, 8(1), 77-80, Jan.-Feb. 2010 Sponsored by National Science Foundation grants CNS-1117692 and CNS-0931914

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