中文摘要：

随着移动通信技术的迅速发展，智能移动终端得到应用普及，大量的第三方应用也随之产生，给移动终端的信息安全带来了很大威胁。为了保护移动终端的信息安全，文中提出一种基于PKI-USIM的移动终端安全认证方法。将PKI技术与智能卡技术相结合，利用移动终端的USIM卡，实现对智能终端第三方应用的安全认证，有效提高移动终端信息的安全。PKI-USIM对网络环境的适应、运算速度、计算能力、存储容量以及上层应用的扩展开发性能都有很大提高，PKI-USIM技术对于移动终端用户身份认证的过程具有实用性和安全性，同时也是对智能卡认证应用的一种扩展研究。

英文摘要：

With the rapid development of mobile communication technology, intelligent mobile terminals have been applied popularly, it also leads to produce a large number of third-party applications. All of these greatly enrich people＇ s lives, but the information security of the mobile terminals has been threatened. In order to protect the information security of mobile terminals,propose a security authentication method of mobile terminals based on PKI-USIM in this paper. According to the realities of complex wireless network environment,com- bining the PKI technology and smart card technology, using USIM card of mobile terminals to realize intelligent terminals＇ authentica- tion, effectively improve the safety of the mobile terminal information. PKI-USIM has adapted to the network environment,its computing speed, computing power, storage capacity as well as the expansion capabilities of upper applications has been greatly improved. PKI- USIM technology is more practical and safer for mobile end-user＇ s authentication process, and it＇ s an extension of research on smart card two-factor authentication applications.