User-centric trust based identity as a service for federated cloud environment

Cloud computing is the promising model of delivering IT resources on demand. Identity and Access Management (IAM) stands as the hurdle for enterprises to adopt to cloud. This paper discusses IAM component of Security as a Service (SecaaS) in the context of cloud computing with a Trust Agent. We have proposed user-centric trust agent identity service which is aimed to create trust among the Cloud Service Providers (CSPs) in the federated environment. Relevant standards such as SAML, SPML, XACML, and OAuth are discussed to enable trusted and secure access to cloud services.