Attribute research of ABAC based on semantic in grid environment

To solve the heterogeneous semantic problems of the ABAC policies in grid environment,a method to assist the security policy representation using semantic attribute information between domains is proposed. Based the diversity and ambiguity feathers of the subject,object and environment attributes,the EduPerson specification,SAML attribute profile and QoS measures are analyzed and the universal attribute ontology UniAttOnt based on the SHIQ (D) description logic is constructed. Based on these,the concrete methods to assist the attribute consistency check and policy representation utilizing ontology knowledge and semantic attribute information are provided. Finally,a case study is showed to verify the feasibility of the method.