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 relatio...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.展开更多
Growing numbers of users and many access policies that involve many different resource attributes in service-oriented environments cause various problems in protecting resource. This paper analyzes the relationships o...Growing numbers of users and many access policies that involve many different resource attributes in service-oriented environments cause various problems in protecting resource. This paper analyzes the relationships of resource attributes to user attributes based on access policies for Web services, and proposes a general attribute based role-based access control（GARBAC） model. The model introduces the notions of single attribute expression, composite attribute expression, and composition permission, defines a set of elements and relations among its elements and makes a set of rules, assigns roles to user by inputing user＇s attributes values. The model is a general access control model, can support more granularity resource information and rich access control policies, also can be used to wider application for services. The paper also describes how to use the GARBAC model in Web services environments.展开更多
针对云计算环境中资源按需访问的特点以及不同资源不同用户访问控制的特殊性,基于基本角色访问控制模型(role-based access control,RBAC),提出一种基于对象和用户的角色访问控制模型OURBAC(object-and-user based on RBAC);并设计了具...针对云计算环境中资源按需访问的特点以及不同资源不同用户访问控制的特殊性,基于基本角色访问控制模型(role-based access control,RBAC),提出一种基于对象和用户的角色访问控制模型OURBAC(object-and-user based on RBAC);并设计了具体的用户访问权限判定规则。以实际实现应用为背景,设计了OURBAC的具体实现流程,对算法的安全性进行了分析,表明本算法使云资源访问控制得以进一步细化,能明显减少系统中角色数量,有效的提高了系统运行效率及安全性。展开更多
基金The National Natural Science Foundation of China(No60402019No60672068)
文摘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.
基金Supported by the National Natural Science Foundation of China (60402019, 60772098 and 60672068)
文摘Growing numbers of users and many access policies that involve many different resource attributes in service-oriented environments cause various problems in protecting resource. This paper analyzes the relationships of resource attributes to user attributes based on access policies for Web services, and proposes a general attribute based role-based access control（GARBAC） model. The model introduces the notions of single attribute expression, composite attribute expression, and composition permission, defines a set of elements and relations among its elements and makes a set of rules, assigns roles to user by inputing user＇s attributes values. The model is a general access control model, can support more granularity resource information and rich access control policies, also can be used to wider application for services. The paper also describes how to use the GARBAC model in Web services environments.
文摘针对云计算环境中资源按需访问的特点以及不同资源不同用户访问控制的特殊性,基于基本角色访问控制模型(role-based access control,RBAC),提出一种基于对象和用户的角色访问控制模型OURBAC(object-and-user based on RBAC);并设计了具体的用户访问权限判定规则。以实际实现应用为背景,设计了OURBAC的具体实现流程,对算法的安全性进行了分析,表明本算法使云资源访问控制得以进一步细化,能明显减少系统中角色数量,有效的提高了系统运行效率及安全性。
