title: SafetyNet api ,get nonce from server rather than the client
body: <p>I am using this library :
  <a href="https://github.com/scottyab/safetynethelper" rel="nofollow noreferrer">https://github.com/scottyab/safetynethelper</a> <br>
  I have read the documentation on Android Deveoloper site and in the repository.
  Everything works fine ,but something is not clear to me.
  It is indicated that it is more secure to obtain the nonce from the server rather then creating it on the app it self.and why is it better to Pass the response from SafetyNet API to the server</p>