A user can create delegation role by his discretion. ... A delegation role D3 owned by PL' and delegated to QE': Create a temporary delegation role D3 ...
User U acting in role R is granted permission P. Advantage: greatly improved efficiency ... S: the subject in this policy, which could be a user or a role ...
Title: Role-Based Cascaded Delegation Author: Danfeng Yao Last modified by: Danfeng Yao Created Date: 2/22/2004 7:00:41 PM Document presentation format
for the analysis of UCON properties. Two fundamental problems in access control: ... pre, ongoing, post and updates. Attribute Mutability. Core models: ...
Relative expressive power between UCONA and traditional access control models ... When 11th subject requesting new access, one ongoing accessing will be revoked. ...