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In this paper we describe our novel solution for Web services enabling users from the trusted organizations to access learning objects in the repository based on their attributes in their home organizations. The solution extends a Web-based Shibboleth system into the realm of Web services. It utilizes the Web services security SAML profile and combines it with the XACML access control policies. The technical solution is described in the context of the course management systems with complex access policies in operation at our campus.