摘要： 在传统的分布式文件系统中用户无法判断文件的可信任性，针对此问题提出采用信任管理的分布式文件系统TrustFs，使用数字签名对文件的发布者进行认证，通过信任管理技术评估发布者的可信任度，从而达到帮助用户识别不安全文件的目的。TrustFs使用可堆叠文件系统的技术实现，可以移植到所有的Unix系统，并具有良好的扩展性。

关键词: 分布式文件系统, 信任管理, 可堆叠文件系统

Abstract: None of the classic distributed file systems can help users to identify which files are trustable. To solve this problem, this paper presents a distributed file system named TrustFs, which uses digital signature for file owner’s authentication and trust management techquines for users’ trust metric evaluation. Aided by TrustFs, users can easily distinguish unsafe files from others. TrustFs is implemented as a stackable file system, so it can be ported to any Unix system and it is very extensible.

Key words: distributed file system, trust management, stackable file system

中图分类号: 

• N945