Here, the first thing that needs to be clear is that Apple packaged certificates can not be shared, so the certificate download is only to download their own certificates, not to download other people's certificates.
And how do you generate your own certificate? Where do you go to download them? Students who are developing ios for the first time will definitely ask this question.
Here, ios certificates can be generated in a foolproof way using Banana Cloud Editor auxiliary tool, you can use Banana Cloud Editor + Apple developer account to generate, in the Apple Developer Center Mr. cer format certificates, and then use Banana Cloud Editor to convert the certificates into the p12 certificate format, and then download the p12 certificates, you can pack.
Why can't we share other people's certificates? Because the source of the Apple certificate is from the Apple Developer Center, if it is not the certificate generated by the Apple Developer Center, the packaged ipa file can not be shelved, and can not be installed on the iphone. But since there is an Apple developer account, it involves the issue of account ownership, if you download the certificate generated by someone else's account, you have to use someone else's account when you put it on the shelves, and then the copyright of the app becomes someone else's, so the general need for the company to put it on the shelves, it is not possible to use other people's certificates to package it.
Therefore, no matter how troublesome it is, you'd better go to apply for an official account and generate an official certificate. Don't go counting on downloading other people's certificates, here's a graphic tutorial for generating an official certificate that you can bookmark and save:
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