One of the more common security systems used is PKI (Public Key Infrastructure), an encryption used for PDA and smart-phone security.

使用的更公用安全性系统之一是PKI(公用密钥基础)，一种用于PDA和智能电话安全性的加密技术。

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The processes for key creating and managing in radar network are given based on common key encryption method.

用户控制权管理方面，本文根据项目实践经验，给出一种高效的用户控制权管理结构及方式。

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