The MACA objective is to provide user authentication, session management and authorization services independently of platform. Authorization servive is based on a contextual role-based access control model that extends NIST RBAC
Role Manager is a security management framework based on the NIST model for Role Based Access Control (RBAC) and the Java[TM] 2 Platform security standards. The access control policies and the RBAC Model are implemented using the RBAC profile of XACML.