校园网中的Role-based Access Control模型设计

介绍了如何将Role basedAccessControl(RBAC)模型应用于校园网的访问控制系统中。其特点是通过分配和取消角色来完成用户权限的授予和取消 ,并且提供了角色分配规则和操作检查规则。安全管理人员根据需要定义各种角色 ,并设置合适的访问权限 ,而用户根据其责任和资历被指派为不同的角色。根据系统的实际需求 。

A General Attribute and Rule Based Role-Based Access Control Model

Growing numbers of users and many access control policies which involve many different resource attributes in service-oriented environments bring various problems in protecting resource.This paper analyzes the relationships of resource attributes to user attributes in all policies, and propose a general attribute and rule based role-based access control(GAR-RBAC) model to meet the security needs. The model can dynamically assign users to roles via rules to meet the need of growing numbers of users. These rules use different attribute expression and permission as a part of authorization constraints, and are defined by analyzing relations of resource attributes to user attributes in many access policies that are defined by the enterprise. The model is a general access control model, and can support many access control policies, and also can be used to wider application for service. The paper also describes how to use the GAR-RBAC model in Web service environments.

A Cache Considering Role-Based Access Control and Trust in Privilege Management Infrastructure

PMI （privilege management infrastructure） is used to perform access control to resource in an E-commerce or E-government system. With the ever-increasing need for secure transaction, the need for systems that offer a wide variety of QoS （quality-of-service） features is also growing. In order to improve the QoS of PMI system, a cache based on RBAC （Role-based Access control） and trust is proposed. Our system is realized based on Web service. How to design the cache based on RBAC and trust in the access control model is deseribed in detail. The algorithm to query role permission in cache and to add records in cache is dealt with. The policy to update cache is introduced also.

Centralized Role-Based Access Control for Federated Multi-Domain Environments

The secure interaction among multiple security domains is a major concern. In this paper, we highlight the issues of secure interoperability among multiple security domains operating under the widely accepted Role Based Access Control （RBAC） model. We propose a model called CRBAC that easily establishes a global policy for roles mapping among multiple security domains. Our model is based on an extension of the RBAC model. Also, multiple security domains were composed to one abstract security domain. Also roles in the multiple domains are translated to permissions of roles in the abstract security domain. These permissions keep theirs hierarchies. The roles in the abstract security domain implement roles mapping among the multiple security domains. Then, authorized users of any security domain can transparently access resources in the multiple domains.

Dynamically Authorized Role-Based Access Control for Grid Applications

Grid computing is concerned with the sharing and coordinated use of diverse resources in distributed “virtual organizations”. The heterogeneous, dynamic and multi-domain nature of these environments makes challenging security issues that demand new technical approaches. Despite the recent advances in access control approaches applicable to Grid computing, there remain issues that impede the development of effective access control models for Grid applications. Among them there are the lack of context-based models for access control, and reliance on identity or capability-based access control schemes. An access control scheme that resolve these issues is presented, and a dynamically authorized role-based access control (D-RBAC) model extending the RBAC with context constraints is proposed. The D-RABC mechanisms dynamically grant permissions to users based on a set of contextual information collected from the system and user’s environments, while retaining the advantages of RBAC model. The implementation architecture of D-RBAC for the Grid application is also described.

基于RBAC模型的前后端分离系统设计与实现

权限管理是现代信息管理系统核心功能之一,能够让用户可以安全访问系统数据,其中基于角色的访问控制模型是常用的一种权限管理模型,其优点是能够灵活地处理角色与权限之间的变化问题,为复杂的权限管理问题提供便利性。另一方面前后端分离技术能够很好地解决前端页面开发和后端服务器功能开发解耦的问题,让分工双方更加注重各自面对的业务问题,减少对开发人员技术门槛的要求,从而大大提高了开发效率。因此采用前后端分离技术实现通用的基于角色的访问控制系统具有一定的实用价值。

基于T-RBAC访问控制模型在实习管理云平台中的应用研究

虚拟化技术虽然促进了云计算技术的不断发展,同时也对云计算安全产生了新的威胁。实习管理云平台可提供多租户访问,然而多点访问策略也增加了云平台的安全隐患。基于任务-角色的访问控制模型T-RBAC可以实现静态-动态相结合分级访问,对不同访问主体采用不同的访问控制策略。将该模型应用在实习管理云平台的开发设计中,通过设置用户访问策略,有效地提升了云平台管理的灵活性,保障了实习管理云平台数据资源的安全性。

Design and Implementation of File Access and Control System Based on Dynamic Web

A dynamic Web application, which can help the departments of enterprise to collaborate with each other conveniently, is proposed. Several popular design solutions are introduced at first. Then, dynamic Web system is chosen for developing the file access and control system. Finally, the paper gives the detailed process of the design and implementation of the system, which includes some key problems such as solutions of document management and system security. Additionally, the limitations of the system as well as the suggestions of further improvement are also explained.

Review of Access Control Model

Access control is one of the core problems in data management system.In this paper,the system requirements were described in three aspects:the traditional access control model,the access control model in the Internet era and the access control model in the cloud computing environment.Meanwhile,the corresponding major models were listed and their characteristics and problems were analyzed.Finally,the development trend of the corresponding model was proposed.

An Extended Role Based Access Control Method for XML Documents

As XML has been increasingly important as the Data-change format of Internet and Intranet, access-control-on-XML-properties rises as a new issue. Role-based access control (RBAC) is an access control method that has been widely used in Internet, Operation System and Relation Data Base these 10 years. Though RBAC is already relatively mature in the above fields, new problems occur when it is used in XML properties. This paper proposes an integrated model to resolve these problems, after the fully analysis on the features of XML and RBAC. Key words XML - RBAC - access control method - RBAC CLC number TP 309 Foundation item: This Research was Partially Supported by the Grants from 863 High Technology Foundation of China (2002AA116030), the National Natural Science Foundation of China (60073014, 60273018), the Key Project of Chinese Ministry of Education (03044) and the Excellent Young Teachers Program of M0E, P.R.C (EYTP)Biography: MENG Xiao-feng (1964-), male, Professor, Ph. D, research direction: web information integration, XML database, mobile database.

Design and Implementation of Linux Access Control Model

In this paper,the design and implementation of an access control model for Linux system are discussed in detail. The design is based on the RBAC model and combines with the inherent characteristics of the Linux system,and the support for the process and role transition is added.The core idea of the model is that the file is divided into different categories,and access authority of every category is distributed to several roles.Then,roles are assigned to users of the system,and the role of the user can be transited from one to another by running the executable file.

基于RBAC模型的网络安全访问控制系统

为缩短网络安全访问控制系统的响应时间,设计了一种基于角色的访问控制(Role-BasedAccess Control,RBAC)模型的网络安全访问控制系统。通过网关设备采用树莓派,外网设备采用路由器完成系统硬件设计。通过设计RBAC模型的知识库、基于RBAC模型的身份认证功能、用户信任值评估功能完成系统软件设计。仿真实验结果表明,当并发用户数量为10 000时,本文设计的网络安全访问控制系统的平均响应时间为1.38 s,工作效率较好,具有一定的应用价值。

The Research of Role Tree-Based Access Control Model

Towards the crossing and coupling permissions in tasks existed widely in many fields and considering the design of role view must rely on the activities of the tasks process,based on Role Based Accessing Control (RBAC) model,this paper put forward a Role Tree-Based Access Control (RTBAC) model. In addition,the model definition and its constraint formal description is also discussed in this paper. RTBAC model is able to realize the dynamic organizing,self-determination and convenience of the design of role view,and guarantee the least role permission when task separating in the mean time.

面向广域测量系统的RBAC扩展模型研究

广域测量系统WAMS(Wide Area Measurement System)是新一代智能电网的重要组成部分,访问控制对于维护WAMS的系统安全十分重要。针对传统RBAC模型在复杂业务权限控制中的不足及WAMS中设备的特点,引入了被访问对象类型的属性和权限约束模块,对传统的RBAC模型进行改进。该模型使WAMS的访问控制更加灵活,角色管理更加方便。

基于RBAC的汽车企业通用权限管理系统设计

权限管理是信息管理系统不可或缺的一部分,其核心内容是访问控制,为整个系统的信息安全提供重要的保障机制。本文采用目前最为广泛使用的RBAC模型,提出一套适合于汽车企业的通用权限管理系统设计方案,主要从设计原则、基本功能模块介绍、系统设计与实现等3个方面对该系统的建设思路进行综合阐述。

基于RBAC的IPv6环境网络信息安全访问控制方法

常规的互联网协议第6版(Internet Protocol version 6,IPv6)环境网络信息安全访问控制方法主要使用ReliefF算法获取最优特征集合,易受访问约束限制影响,导致安全访问控制延时过高。针对此问题,利用基于角色的控制访问(Role-Based Access Control,RBAC)方法设计一种全新的IPv6环境网络信息安全访问控制方法。构建了IPv6环境网络信息安全访问控制模型,利用RBAC生成了网络信息安全访问控制关系,实现了网络信息安全访问控制。实验结果表明,所设计的基于RBAC的IPv6环境网络信息安全访问控制方法的访问控制延时相对较低,证明设计的环境网络信息安全访问的控制效果较好,具有可靠性,有一定的应用价值,为降低IPv6环境网络风险做出了一定的贡献。

RBAC中权限扩展的实现

针对RBAC以访问控制主体为中心,较少关注访问控制客体,造成了在权限设置和管理过程中工作量较大的问题,提出了对权限进行相应扩展的方法。该方法将权限分为操作和操作所针对的数据对象,提出了操作继承和数据对象继承概念,并在此基础上提出了权限继承概念。给出了具体的应用例子,表明该方法在权限设置和管理过程中将大大减少系统安全管理人员的工作量。

采用J2EE安全机制支持RBAC模型的研究和实现

实现了用J2EE安全机制来支持RBAC模型的方法。给出了J2EE保护系统的配置,并设计一个鉴权决定算法。用J2EE安全的描述语言定义了RBAC模型,给出了实现J2EE安全服务的需求。通过在国家科技基础条件平台的部署和应用,取得了预期的效果。

基于RBAC的细粒度访问控制方法

分析基于角色的访问控制模型,提出一种基于RBAC模型的细粒度权限管理方法。引入细粒度权限管理的概念,把资源的访问权限按尽量小的粒度分解,并把分解后的权限分配给角色,通过给用户分配角色以及角色之间的继承关系简化权限的管理。基于RBAC模型的细粒度权限管理系统验证了该方法的正确性。该方法的设计和实现过程对于同类软件的开发具有参考价值。

基于RBAC改进模型的角色权限及层次关系分析

针对著名的 RBAC96模型的不足之处 ,结合私有权限、部门权限和权限属性变化等问题 ,对角色权限及角色层次关系进行了分析 ,提出了一个改进的角色层次化关系模型 .该模型引入特征权限等概念 ,通过定义一般继承、私有化继承、公有化继承和无特征继承等新的角色继承方式建立角色层次化关系模型 .新模型比 RBAC96模型更加简化和易于理解 ,且具有更强的可伸缩性 ,特别适合于在复杂的角色层次关系中应用 ,例如网络操作系统、大型数据库、分布式应用等 .