RBAC Policies in XML for X.509 Based Privilege Management

This paper describes a role based access control policy template for use by privilege management infrastructures where the roles are stored as X.509 Attribute Certificates in an LDAP directory. There is a brief description of the X.509 privilege management model, and how it can be used to implement RBAC. Policies that conform to the template are written in XML, and the template is specified as a DTD. (A future version will specify it as an XML schema). The policy is designed to be used by the PERMIS API, a Java specification for an Access Control Decision Function based on the ISO 10181 Access Control Framework and the Open Group’s AZN API.