title: Retrieve the apk signature at runtime for Android
body: <p>Is there some way to retrieve information about the apk signature at runtime? </p>
  
  <p>For example I have the same App signed with 2 different signatures: app-1.apk and app-2.apk and I'd like to be able of differentiate both apk in run time. Is that possible? </p>
  
  <p>My goal is to implement a licensing system using a external server and based on the version code of the application and the signature.</p>