Security is another major area of change with the transition from the WebSphere security authorization model to role-based security.
安全性是更改的另一个主要方面，它体现在从WebSphere安全性授权模型到基于角色安全性的转变中。
Role-Based Delegation Model mainly solves the centralization and complexity questions of traditional authorization management, and satisfies the requirement of distributed computing environment.
基于角色的委托授权模型旨在解决传统授权管理的集中性和复杂性问题，从而满足分布式计算环境的需求。
And a WFMS authorization model based on role control and time constraints is constructed, and how it meets the desires of least privilege and separation of duty is discussed.
构建了一个带有时间约束的基于角色的工作流系统授权模型，分析该模型对最小权限和责任分离要求的满足情况。
In this system, many new techniques are adopted, for example, mechanism of the chain of trust, role-based access control model, two-level of logs, trusted authorization and so on.
系统中采用了信任链机制、基于角色的访问控制模型、两级日志、可信认证等技术，同时给出了可信在分布式计算机系统中的实现技术和途径。
This paper also extends a role-based authorization constraint model to describe constraints with spatial character on different levels, which is suited for wireless network.
对角色的授权约束加入空间特性，使之能够形式化描述多个层面的空间职责分离约束，从而适用于无线网络的应用环境。
This paper discusses the authorization problem and defines the conception of covered role, presents a proxy mechanism oriented role-based access control (PRBAC) model.
该文介绍了RBAC与代理机制相结合所带来的授权问题，在定义了角色屏蔽概念的基础上，提出了面向代理机制的角色访问控制模型。
This paper discusses the authorization problem and defines the conception of covered role, presents a proxy mechanism oriented role-based access control (PRBAC) model.
该文介绍了RBAC与代理机制相结合所带来的授权问题，在定义了角色屏蔽概念的基础上，提出了面向代理机制的角色访问控制模型。
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