在Xcode真机调试开发过程中，无论是使用个人证书或者是企业证书，经常会遇到这样的问题：
The certificate used to sign "XXX" has either expired or has been revoked. An updated certificate is required to sign and install the application.The
阅读背景：
The certificate used to sign "XXX" has either expired or has been revoked
来源：互联网
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