Design and implementation of multilevel security subsystem based on XACML and WEB services

Controlled sharing of confidential information in military environment, especially as a part of joint and coalition forces, is an important mean to achieve the network-centricity goals. During last few years a technology for building the Service-Oriented Architecture has been developed. The Service-Oriented Architecture maps the concept of distributed service-oriented processing. It is a good application framework for integration of heterogeneous military systems. However, these systems could process the confidential data divided onto hierarchical classification levels. We can rise up the question: can Service-Oriented Architecture serve as a middleware layer to integrate such systems?