title: What are code signing identities in Xcode about?
body: <p>What are &quot;code signing identities&quot; in Xcode?</p>
  <p>Are they the certificates?</p>
  <p>Are they the private keys?</p>
  <p>Are they the app ids?</p>
  <p>Are they the provisioning profiles?</p>
  <p>If I go to the target build settings, it asks for the code signing identity, so I need to figure this out.</p>
  <p>I thought we signed code using our private key. None of my private key names show up, however. It shows a list of certificates (I think, though I am not even sure.)</p>