Rao, Prathima; Lin, Dan; Bertino, Elisa; Li, Ninghui; … - 2011
integrating access control policies of collaborating parties. Such an integration must be able to support complex authorization … specifications and the fine-grained integration requirements that the various parties may have. In this paper, we introduce an … algebra for fine-grained integration of sophisticated policies. The algebra, which consists of three binary and two unary …