中文摘要：

面向鉴定云终端用户身份、确保用户信息数据安全应用需求,研究和设计了一种基于动态信任管理的云安全认证服务机制。在PKI技术等基础上融入动态信任管理方法,实现了含证书管理、用户管理、用户行为采集、用户信任管理等功能的认证服务系统,适应动态云应用环境的安全认证需求。通过应用实例和测试,对系统实现的可行性和效果完成了验证。

英文摘要：

In order to satisfy the requirement of identifying cloud users and ensuring user data,an authentication mechanism for cloud security based on dynamic trust management has been designed. By integrating dynamic trust management with PKI and other security technologies,a cloud authentication system has been implemented,whose functions include certificate management,user management,user behavior collection,and user trust management,etc. It can meet the needs of authentication in dynamic cloud environment. The feasibility and effect of the system have been validated by application and test.