A comparative analysis of Identity Management Systems

In this paper, we present a comparative analysis of a few popular Identity Management Systems against a set of requirements. Identity Management and Identity Management Systems have gained significant attention in recent years with the proliferation of different web-enabled and e-commerce services leading to an extensive research on the field in the form of several projects producing many standards, prototypes and application models both in the academia and the industry. We have collected and compiled different requirements from different sources to profile an extensive set of requirements that are required for a Privacy-Enhancing Identity Management System and presented them in the form of a taxonomy. Then we have compared some Identity Management Systems against those requirements and presented them in a concise way to help readers find out instantly which systems satisfy what requirements and thus help them to choose the correct one to fit into their own scenarios.