Table of Contents
xoRBAC seems to have many of the features required for ORBIT RBAC. It is a prototype implementation of unknown reliability though, and it is written in a dynamic scripting language that might lead to maintainability issues.
http://wi.wu-wien.ac.at/home/neumann/ Neumann and http://wi.wu-wien.ac.at/home/mark/ Strembeck discuss the design and implementation of an RBAC service xoRBAC in an object-oriented scripting language XOTcl http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/neumann01design.pdf NS01, http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/p65-strembeck.pdf NS03, and http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/p392-strembeck.pdf SN04, and Strembeck discusses the implementation of conflict checking of separation of duty constraints in RBAC http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/se2004.pdf Str04.
Strembeck describes a role engineering tool xoRET for RBAC in http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/sreis05.pdf Str05b.
Neumann and Zdun introduce the object-oriented scripting language XOTcl which is based on OTcl from MIT in http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/neumann00xotcl.pdf NZ00. The http://media.wu-wien.ac.at/ XOTcl site describes XOTcl as an open source project and has very recent downloadable software and documentation including a http://mini.net/tcl/XOTcl XOTcl wiki although the http://packages.qa.debian.org/x/xotcl.html Debian Linux package information shows it to be an orphan that has not been updated since 2001. The XOTcl site also states that XOTcl is included in http://www.activestate.com/Products/ActiveTcl/ ActiveTcl that is a product of http://www.activestate.com/ ActiveState and is available free after signing an education license.
Strembeck describes the application programming interface (API) for xoRBAC in http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/xoRBAC-API-Reference.pdf Str06. See http://wi.wu-wien.ac.at/home/mark/xoRBAC/index.html xoRBAC for downloadable xoRBAC software.