目前对工作流系统中委托授权的研究都是在已有的授权模型基础上添加适用于此模型的委托和
撤销功能, 没有详细讨论委托和撤销机制. 通过分析工作流系统中委托授权特征, 提出了一种用户 …

Permission delegation is an important research issue in access control. It allows a user to
delegate some of his permissions to others to reduce his workload, or enables others to …

为评价制造信息质量, 进而提高企业的经营质量, 定义了制造信息和制造信息质量,
将信息质量定义为事物, 时间, 空间, 状态, 来源, 载体和表达方式等七个信息结构要素的函数 …

ABSTRACT The Chinese Wall Security Policy (CWSP) model is one of the access control
models, which aims to prevent sensitive information concerning a company being disclosed …

Inherited the flexibility merit of the access control model based on attribute (ABAC), the
authorization model based on attribute delegation in grid (GADAM) is put forward, which …

Access delegation regulates the process that an authorized user transfer part or total of
his/her permissions to another user, which is very important in access control system …

Model (ABDM), in which delegatee must satisfy both delegation prerequisite condition (CR)
and delegation attribute expression (DAE) when assigned to a delegation role. ABDM …

Chinese Wall Security Policy (CWSP) is a widely applied access control policy in many
fields, especially in commercial world. Delegation is one of the hot topics of access control …

This paper proposes an Attribute-Based-Delegation-Model (ABDM) with an extended
delegation constraint consists of both delegation attribute expression (DAE) and delegation …

In ABDM, revocation focus on how to revoke those delegated roles or permissions.
Considering the characteristics of delegation operation in ABDM, this paper proposes two …