细粒度访问控制的安全加密文件共享系统  

Fine-grained access control security encryption fi le sharing system

作　　者：周胜安[1] 周德华[1] 

机构地区：[1]广东行政职业学院,广东广州510640

出　　处：《计算机安全》2014年第10期10-14,共5页Network & Computer Security

基　　金：2012广东高校育苗工程(自然科学类)项目"代理重加密体制的研究"(2012LYM_0027)

摘　　要：互联网时代,越来越多的用户把自己的信息(可能含有敏感信息)存储在网络上的第三方(如网络硬盘服务器)上,但是一旦这些服务器受到攻击被攻陷或者由于商业利益服务器管理者被腐化,就可能使上述敏感信息轻易被泄漏,为了安全起见,用户在文件服务器上存放文件时通常事先对文件进行加密。然而,传统加密方法实现的文件系统只能实现文件加密给某个特定的用户,无法实现细粒度层次上的文件共享,论文设计和实现的支持细粒度访问控制的安全加密文件共享系统可以有效地解决上述问题,具有较高的实用价值。In the Internet era, an increasing number of users will put their own information（which may contain sensitive information） stored on the Internet by third-party sites（e.g. network hard disk server）, but when the server is compromised by attacking or administrators are corrupt because of business interests, those sensitive information can easily leakage, for safety reasons, users store files in the file server usually encrypt the files. However, traditional encryption methods to achieve the file system can only achieve a particular file encryption to the user, cannot achieve fine-grained level of file sharing, this paper has developed a fine-grained access control to support the security of encrypted file sharing system, which can effectively solve these problems with high practical value.

关 键 词：访问控制 属性加密 密文策略 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]