关键词: 访问控制，动态属性，多安全域，使用控制

Abstract: On the basis of analyzing multiple domain interaction, we proposed a dynamic attribute based multiple domain usage control model. The model DAIS-UCON is based on the next generation access control model UCONnac，and extends the dynamic characteristics of the UCONnac components of authorization, obligation and conditions. Then we classified dynamic attributes according to the time of definition and the scope applied,which facilitate modeling each component as a dynamic entity. At last we discussed the extended model by formalizing, and introduced new predicates to accommodate rectuirements of multi-domain dynamic interaction,which will be useful for dynamic policy constructing and authorization in access control.

Key words: Access control, Dynamic attribute, Multiple domain, Usage control