What is Android keystore digest equaivalent in iOS apps
<p>In Android application developers use a <code>keystore</code> to sign their applications. They can fetch the digest of the <code>keystore</code> by using some Android SDK's like <code>PackageManager</code>. The keystore digest is unique for same apps even after update.</p>

<p>Some third developers use this digest in their third APIs. For example it is using in Maps API of google.</p>

<p>Now I am wondered is there something like this in iOS. So that we can fetch it from iOS SDK and it be unique for all versions of my application?</p>