As I mentioned on this morning's TC-call, there is a "OGSA-Authz Working Group"
at the Global Grid Forum, that has a strong XACML component.
Working Group Charter:
The objective of the OGSA Authorization WG is to define the specifications
needed to allow for basic interoperability and pluggability of authorization
components in the OGSA framework. There are a number of authorization systems
emerging in the Grid today (Akenti, PERMIS, CAS, VOMS, Cardea, etc.), these
specifications will allow these solutions to be interchangeably used with
middleware that requires authorization functionality.
This group will leverage authorization work that is ongoing in the Web services
world (e.g. SAML, XACML, the WS Security suite) and define specification for how
these should be used for Grid services.