Single - Sign - On ( SSO ) across open cloud computing federation

Cloud Computing is a concept which serves the computing resources, like Hardware Infrastructure, platform, software application as a Service. Client just need to get connect with the service to use all the computing resources. Cloud users no need to deploy the resources at their site because resources are available at the provider’s side and they provide it and charged on usage basis. This paper focuses on the concept of SingleSign-On (SSO) across all the open cloud to use their computing resources in single or shared manner. We also explore the scenario of interoperability standards between different clouds. This will accelerate consumer specific efficient cloud resource sharing mechanism. Key Words— cloud interoperability, Single-Sign-On (SSO), Cryptographic attack, Service Oriented Architecture (SOA), Open standard for cloud