85 | 88 | In [[http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/i01-kluwer01-jpark.pdf PAS01]] Park, Ahn and Sandhu write "Park and Sandhu identify and describe two different approaches for obtaining a user's attributes on the Web: user-pull and server-pull architectures [[http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/smart-certificates-extending-x-1.pdf PS99b]] . They classify these architectures based on "Who pulls the user's attributes?" In the user-pull architecture, the user pulls her attributes from the attribute server then presents them to the Web servers, which use those attributes for their purposes. In the server-pull architecture, each Web server pulls user's attributes from the attribute server as needed and uses them for its purposes." LDAP may be used in either approach [[http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/i01-kluwer01-jpark.pdf PAS01]]. |