Through analyzing the security holes that exist in the process of Linux user login, the article sets forth the process and character of Kerberos which represents the third authentication of symmetry-based secret key, and puts forward a security model of applying Kerberos to Linux user login.%通过分析Linux用户注册过程中存在的安全漏洞，阐述了以Kerberos为代表的基于对称密钥的第三方验证的过程及其特点，提出了一种将Kerberos应用于Linux用户注册的安全模型。
展开▼
