In part 2 we added openSSL to our project. In this part we add the Apple root certificate to our project.
The Apple root certificate is a public certificate issued by Apple Inc that is used to validate the receipt (which is also issued by Apple). We can simply add the root certificate to the project like we would do with any resource.
First download the certificate from https://www.apple.com/certificateauthority.
You need the "Apple Inc Root Certificate", simply click the link and/or select "download to disk".
You will receive a file named "AppleIncRootCertificate.cer".
Add this file to your project (drag -from the download folder- & drop -in the xcode project navigator, I added it to the "Supporting files" section-) and do not forget to tick the box that adds it to your target. (Xcode -> Utilities panel -> File Inspector -> Target Membership)
Now the root certificate can be loaded from the mainbundle.
Note: It is a good idea to obfuscate the name of the certificate, or even to hide it in another file, but for the remainder of this series, I will refer to this certificate simply under its original name.
Note: If we use Receigen to generate our obfuscation code, then the Apple root certificate is already included in the generated code.
Next up is part 4: C-union accessors
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