User delegation is a mechanism for assigning access rights available to one user to another
user. A delegation can either be a grant or transfer operation. Existing work on delegation in …

Large and distributed access control systems are increasingly common, for example in
health care. In such settings, access control policies may become very complex, thus …

Delegation is a mechanism that allows a user A to act on another user B's behalf by making
B's access rights available to A. It is well recognized as an important mechanism to provide …

In this paper, we present the extension of WebDSL, a domain-specific language for web
application development, with abstractions for declarative definition of access control. The …

Workflow management systems provide some of the required technical means to preserve
integrity, confidentiality and availability at the control-, data-and task assignment layers of a …

信任管理中基于角色的委托授权研究进展 Page 1 收稿日期: 2007-07-03; 修回日期: 2007-12-27
基金项目: 国家自然科学基金资助项目( 60573035) ; 河南科技大学青年基金资助项目 ( 2005 …

提出了基于角色的细粒度委托限制框架, 将角色分为对象角色和委托角色, 实现细粒度的控制.
分析了三类委托限制: 时间限制, 禁止限制和义务限制. 针对不同类型定义相应限制规则 …

Role-based access control (RBAC) is recognized as an efficient access control model and
its delegation authority has been proved to be flexible and useful for information sharing on …

Multi Agent Systems (MAS) provide a useful paradigm for accessing distributed resources in
an autonomic and self-directed manner. Resources, such as web services, are increasingly …

Delegation is a powerful mechanism to provide flexible and dynamic access control
decisions. Delegation is particularly useful in federated environments where multiple …