Generating certificates

Generating a certificate is a process that needs to be started in the development device (your Mac) and then completed in the Apple developer's portal.

First, you will need to open KeyChain Access, and through the drop-down menu of KeyChain Access, select Certificate Assistant. Finally, click on Request a Certificate from a Certified Authority.

From the Certificate Assistant window, fill the User Email Address field with your e-mail, insert a common name, and mark the Save to disk option to save the file to your disk. Click on Continue and save it to your desktop (or somewhere you can remember later).

This process will generate a file with a *.certSigningRequest extension. Go directly to the Apple developer's portal, access the iOS developers, and click on the Certificates section.

Click on Add, and you will be moved to a screen where you need to select a certificate type. Keep in mind that we will use the generated *.certSigningRequest extension twice. We will generate a development certificate to be used for the testing phase, and then we will make one for production, which will be used for the final build and store submission version of your games.

Here, select iOS App Development and click on Continue. In the following screen, you will find some information about how to make the *.certSigningRequest file, which we already made. Then, you can click on Continue and select the file from your desktop (or wherever you saved it).

Click on Generate, and this will provide you with a valid development certificate; download it.

Redo the same process, but this time, select App Store and Ad Hoc and use the same process to generate the production certificate and download it.

Now, as you have two certificates downloaded (files with the *.cer extension), double-click on each of them. This will run KeyChain Access for you and ask you whether you really want to install it. Do the process twice, as we will require one development certificate while building and testing and another one for the distribution build.

After installing both, you will find that they have a green icon next to each of them, and this tells you that both are valid.

Generating an App ID

Now, go back to the main panel in your iOS developer account screen, and from the section named Identifiers, choose the subsection App IDs and start adding a new App ID.

The process is very simple and it involves adding some inputs:

Finally, click on Continue to finish the process of adding the App ID (Bundle ID).