The CloudGrid approach: Security analysis and performance evaluation

Both cloud and grid are computing paradigms that manage large sets of distributed resources, and the scientific community would benefit from their convergence. This paper proposes a novel computing model, cloudgrid, able to achieve full cloud and grid integration. After presenting its three-layer architecture, the security issues involved are analyzed, proposing a solution based on fine-grained access control mechanisms and identity federation that allows cooperation and interoperability among untrusted cloud resources. The overhead introduced by themultiple-layer architecture andby the security system are measured by extensive testing on a prototype implementation, and a trade-off analysis between security and performance is presented. © 2011 Elsevier B.V. All rights reserved.