【摘要】 安全机制是实现信息安全的核心要素。现有的安全机制主要解决单角色单用户的安全性问题,对于多角色多用户共享的安全问题研究的较少。文章提出了共享加密文件系统总体设计方案并对其安全机制进行了深入分析,它可以在不可信的服务器和网络环境中安全的存放及传输文件,具有安全可靠、多人共享、角色控制、二次授权、权限撤销及简洁高效的优点。更多还原

【Abstract】 Security mechanism is the core of information security realization.The current security mechanisms designed to solve the security problems for single-role and single-user do not pay much attention to those for multi-role and multi-user.This paper proposes a main design of shared cryptographic file systems and analyses deeply this mechanism.This main design can assure safe storage and transit of information files in unreliable servers or network environment,and be characterized with safety,shared,role-control,multi-authorization,authority cancel,simplicity and efficiency.更多还原