An Action-Based Fine-Grained Access Control Mechanism for Structured Documents and Its Application

Algorithm 2

 <Permission>

   <Obj>

     <ObjID>O11</ObjID>

   </Obj>

   <Action>

     <Role>A</Role>

     <Time>

       <after>8:00am</after>

       <before>10:00am</before>

     </Time>

     <Environment>

       <IP>

         <from>172.16.1.5</from>

         <to>172.16.1.35</to>

       </IP>

     </Environment>

   </Action>

   <PerDes>read&write</PerDes>

 </Permission>