Note: You can skip this part if your server uses
HTTPS to serve content and jump to Application Setup guide.
If your app targets iOS 9 and your server uses
HTTPS to serve content, you don’t need to sign the file. If not (e.g. when supporting Handoff on iOS 8), it has to be signed using a
SSL certificate from a recognized certificate authority.
Note: This is not the certificate provided by Apple to submit your app to the App Store. It should be provided by a third-party, and it’s recommended to use the same certificate you use for your
HTTPS server (although it’s not required).
To sign the file, first create and save a simple .txt version of it. Next, in the terminal, run the following command:
cat <unsigned_file>.txt | openssl smime -sign -inkey example.com.key -signer example.com.pem -certfile intermediate.pem -noattr -nodetach -outform DER > apple-app-site-association
This will output the signed file in the current directory. The
intermediate.pem are the files that would made available to you by your Certifying Authority.
Note: If the file is unsigned, it should have a
application/json. Otherwise, it should be
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