Fine-Grained Role Delegation Model Based on Mapping Mechanism

CAI Wei-hong; WEI Gang; XIAO Shui

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Fine-Grained Role Delegation Model Based on Mapping Mechanism

更新时间：2025-07-16

- Fine-Grained Role Delegation Model Based on Mapping Mechanism
- Acta Electronica Sinica Vol. 38, Issue 8, Pages: 1753-1758(2010)
- 作者机构：
  
  1. 华南理工大学电子与信息学院,广东,广州,510640
  2. 汕头大学计算机科学与技术系,广东,汕头,515063
  3. 华南理工大学电子与信息学院广东广州,510640
  4. 汕头大学计算机科学与技术系广东汕头,515063
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP309
- Published：2010
- 稿件说明：
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CAI Wei-hong, WEI Gang, XIAO Shui. Fine-Grained Role Delegation Model Based on Mapping Mechanism[J]. Acta Electronica Sinica, 2010, 38(8): 1753-1758.
DOI：

CAI Wei-hong, WEI Gang, XIAO Shui. Fine-Grained Role Delegation Model Based on Mapping Mechanism[J]. Acta Electronica Sinica, 2010, 38(8): 1753-1758. DOI：

摘要

针对现有RBAC(Role-Based Access Control)委托授权模型存在的不足:其一

没有有效地实现细致委托粒度;其二

权限传播没有得到很好的控制

给出一种基于映射机制的细粒度角色委托模型RDBMPM(Fine-Grained Role Delegation Model Based Permission Mapping Mechanism)

该模型基于向量化与度量化算子的复合运算

提出了度量角色的概念

并以其为授权粒度对委托约束机制进行讨论

增强了权限传播的可控性.最后

通过三个典型的支持细粒度委托的模型在映射机制下的具体实现

验证了RDBMPM模型的研究意义.

Abstract

There are some faults in the existing role-based delegation models:(1) most of these models can rarely support a fine delegation granularity effectively;(2) the propagation of permissions in them is poorly-controlled.This paper analyzed these problems

and proposed a fine-grained role delegation model based on mapping mechanism (RDBMPM)

which mainly consisted of a vectorizing operator and a measuring operator.Based on these two operators’ concerted computing

the paper introduced the concept of measuring role

which acts as the authorized granularity in the following discussion of delegation constraint mechanism.Finally the significance of the research on RBAC(Role-Based Access Control) delegation model based on mapping mechanism is justified by the simulating of three typical fine-grained delegation models in RDBMPM.

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