这个jar文件给Android程序提供了方便简易的数字证书生成、更新、申请接口，在Android 4.0至5.0各版本中均测试成功。 接口里的方法参数解释请参阅CertFunc.java源码，测试范例代码请参考TestCertFunc.java源码。-This jar file to the Android program provides a convenient and easy digital certificate generation, updating, application interface, Android 4.0 至 5.0 versions in both the test was successful. Interface where the method of parameters, please refer to CertFunc.java source test sample code, please refer TestCertFunc.java source.