介绍了基于角色的访问控制模型和基于任务的访问控制模型的原理。
This paper introduces the theory of access control model based on role and task, and analyzes task and the shortage of above models.
完善的安全体系，采用灵活的基于角色的访问控制模型，实现灵活的访问控制体系。
Perfect security system, Using flexible Role-Based Access Control model to build flexible Role-Based Access Control system.
然后，描述了几种具有代表性的基于角色的访问控制模型，并对这几种访问控制模型进行了分析比较。
Then, the paper describes several typical Role Based Access Control models, at the same time analyzes and compares them.
在安全信息系统应用中，传统的基于角色的访问控制模型不能为用户过滤业务数据，容易导致数据失密。
In the application of secure information systems, the traditional role-based access control model can not filter business data for users, which easily results in secret data leakage.
而基于角色的访问控制模型以角色为中介，将用户与权限逻辑隔离，但该模型不能处理有执行顺序的任务；
Role is introduced to separate user and privilege in role-based access control model, but RBAC can't directly control the permission for a sequence of events.
基于角色的访问控制模型(RBAC)难以直接有效地应用到以“最小需要”为原则的细粒度访问控制应用领域。
The basic model of RBAC can not be applied directly to the systems which require "minimum necessary" and fine-grained access control.
从实验室教学管理系统的特点出发，讨论了基于角色的访问控制模型RBAC在实验室教学管理系统中应用的优势。
Based on the features of the laboratory education information system, this paper discussed the advantages of the application of role-based access control (RBAC) in the system.
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。
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.
在对文档进行分类的基础上，定义了一种双角色的基于角色的访问控制模型，并给出了此模型的数据流图及部分以XACML形式表示的控制策略。
Based on the classifying of the protected documents, a DR-RBAC model is defined, and its data-flow diagram and two examples of PolicySets expressed by XACML are given out.
在RBAC模型的基础上，提出一种基于岗位和角色的两级访问控制模型——PRBAC。
On the basis of RBAC model, this paper put forward a new model PRBAC, which was a twolevel model based on the post and role.
文章分析了SYBASE数据库管理系统的安全控制机制和基于角色的数据访问控制模型。
This paper analyzes the security mechanism of SYBASE database management system and the model of Role-based Access Control.
在角色的安全访问控制模型的基础上，提出了基于角色控制的安全工作流模型，使文档在工作流引擎的驱动下，在网络环境中流向正确用户。
And it presents a secure office workflow based on our designed secure access control model to make the document flow to the right figure user in network by workflow engine.
论文提出一种新的访问控制模型—基于资源抽象的角色访问控制模型(RD_RBAC)。
A new model, role access control model based on resource abstract (RD_RBAC), is proposed in the paper.
研究了相关的技术基础，如SNMP协议，HTTP协议，代理服务技术以及基于角色访问的控制模型；
Some techniques such as SNMP, HTTP, proxy's basic theory and role-based access control are introduced.
提出一种基于认证可信度的角色访问控制模型(AT - RBAC)。
A new model, role access control model based on authentication trustworthiness (AT-RBAC) is proposed in the paper.
该模型采用基于角色的访问控制策略，实现了各业务系统间的一次登录、统一认证、统一权限管理和业务漫游功能。
And, it implements single sign-on, uniform authentication, uniform authorization management and business systems roam between different application systems.
针对基于角色的访问控制(RBAC)模型中由于继承关系产生的子角色不能拥有私有权限问题进行了研究。
A problem that child role cannot obtain private permissions because of inherited relation in the Role-Based Access Control (RBAC) model is researched.
基于规则和角色的访问控制模型RB-RBAC在RBAC模型的基础上引入了用户属性和授权规则，使得用户-角色分配能够自动完成。
Rule-based RBAC (RB-RBAC) modifies RBAC and introduces user attributes and rules to automatically assign users to roles. But there are still shortcomings in RB-RBAC.
本文以海鼎多业态商业自动化系统(HDPOS5)为例，将改进的基于岗位与角色的访问控制模型应用到该系统中，更好的保证了系统的安全性。
This paper takes heading multiple area automatic commerce system (HDPOS5) for example, applied the improved base on position and role access control model to system, ensure the security of the system.
本文将角色的概念加入进来，讨论了基于角色的工作流状态的动态访问控制，并对其模型进行了形式化描述和分析。
This paper proposes the role concept, discusses the dynamic access control of role-based workflow status, and describes and analyses the formal model.
在基于角色访问控制的几种主要模型的基础上，提出了一种基于时间的角色访问控制模型。
Synthesizes main models of role - based aceros control and designs a time role - based access control model which is called TRBAC model.
该模型解决了传统的基于角色访问控制中的动态适应性差和最小权限约束假象的问题，用于分布式工作流管理系统，提高了安全性、实用性。
This model overcomes the weaknesses of the bad dynamic adaption and the fake constraint of the least privilege. It can enhance the security and practicability of the distributed workflow system.
引入含有时间约束的TRBAC控制模型，结合实践构筑了系统的基于角色的访问控制。
Draw TRBAC who haves time constraint control pattern, and uniting the practice put up the system access control based on characters.
分析了以上两种模型存在的问题，为了使访问控制更灵活，提出了一种基于角色和任务的访问控制模型，并给出了模型的形式化定义、授权约束和在校园网格中的应用。
It puts forwards a new access control mode based on role and task to make access control more flexible. The formalized meaning, restriction and application in school grid are also presented.
分析了以上两种模型存在的问题，为了使访问控制更灵活，提出了一种基于角色和任务的访问控制模型，并给出了模型的形式化定义、授权约束和在校园网格中的应用。
It puts forwards a new access control mode based on role and task to make access control more flexible. The formalized meaning, restriction and application in school grid are also presented.
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