Reachability analysis for attribute based user-role assignment model
REN Zhiyu1,2,3,CHEN Xingyuan1,2
1. Henan Province Key Laboratory of Information Security,Zhengzhou Henan 450004,China; 2. Information Engineering University,Zhengzhou Henan 450001,China; 3. State Key Laboratory of Mathematical Engineering and Advanced Computing,Zhengzhou Henan 450001,China