和MiniCA类似的数字证书工具，删除了不常用的功能，修正了若干BUG，改进界面更易操作，增加了文件格式支持种类。-MiniCA and similar digital certificates tools, do not delete the commonly used functions, and amended a number of bugs, improving the interface easier to use, to increase the types of file for

一个简易的CA，实现证书的管理操作（颁发更新和删除）-The realization of a simple certificate issued by CA to update and delete

职工信息管理系统，实现了信息的录入查询删除修改排序等功能。-english buhao