Grid folks and security researchers should be interested in the SecPAL preview release - The goal of the SecPAL project is to develop a language for expressing decentralized authorization policies, and to investigate language design and semantics, as well as related algorithms and analysis techniques.

SecPAL Preview Release for Microsoft .NET

The Security Policy Assertion Language (SecPAL) provides a flexible and robust declarative authorization language developed for large-scale Grid Computing Environments. This installable MSI includes a preview release of the .NET implementation of SecPAL, developer document describing the SecPAL programming model and scenario based samples intended to support evaluation of SecPAL.

Source: SecPAL Preview Release for Microsoft .NET

Cross Posted from Dan Fay's Blog (http://blogs.msdn.com/dan_fay)