Simulation Study of Different Authentication Protocols Used for Federated Identity Management in Cloud

rganizations needed a way to unify authentication systems in the enterprise for easier management and better security. Single-sign-on was widely adopted and provided a solution for keeping one repository of usernames and passwords that could be used transparently across several internal applications. After analyzing various issues regarding authentication of user’s in federated systems we have tried to find out the benefits of using OpenID and SAML as authentication protocols in cloud computing. The focus of the thesis is on the simulation study of the authentication protocols SAML and OpenID in Cloudsim using NetBeans. The performance evaluation has been done based on RAM usage and execution time by introducing the concept of Global Broker. Keywords— Authentication, Federated Identity Management (FIdM), SAML, Open ID, Global Broker.