| 摘要: |
| 为了有效地支持最小特权原则，针对传统特权机制存在的局限性，提出了一个新的Linux特权机制受挫特权框架(CPF)．该框架提供了细粒度的特权划分；完善了特权进程的特权计算机制；引入了特权状态的概念来进行特权控制进一步细化了特权控制的单位l基于此框架，可以对特权进程进行细粒度的，自动的特权控制，并对应用完空透明．试验表明其能大大降低入侵事件的危害性，有效地支持了最小特权原则． |
| 关键词: 特权 特权进程 权能 最小特权原则 Linux |
| DOI： |
| 分类号: |
| 基金项目:Supponed by the National High-Tech Research and Development Plan of China under Grant No.2002AA141080(国家高技术研究发展计划(863))；the National Natural Science Foundation ofChina under Grant Nos60073022，60373054(国家自然科学基金);the Knowledge Innovation Engineering Program ofthe Chinese Aeadamy of Sciences under Grant NO.KGCX1-09(中国科学院知识创新工程) |
|
| Design and Implementation of a Controlled Privilege Framework |
|
LIANG Bin,SUN Yu-Fang,SHI Wen-Chang,SUN Bo
|
| Abstract: |
| In order to support to the princir'le of least pfivUege effectively,considering the fimitatinns of traditional privilege mechanisms，a new Linux privilege mechanism called controlled privilege framewo (CPF) is proposed．CPF provides a fine-granularity partition of system privileges；improves the privilege computing mechanism of privileged process；and introduces the notation of privilege state for privilege control，refines the unit of pdvilege control farther．Based on CPF,fine-granularity and automatic privilege control can be performed totally transparent to all applications．The experimental results show that the threats of introsion are reduced and effective support to the prineiple ofleast privilege can be achieved． |
| Key words: privilege privileged process capabihty principle ofleast privilege Linux |
