title: Converting inputStream to FileInputStream?
body: <p>I am in a problem - i need to read SecretKey from Android APK (e.g. key.keystore), for my app it has to be read as a FileInputStream, but from assets I am getting only inputStream. How to convert inputStream to FileInputStream? Or is there any other way, how to acces file from e.g. resources as a fileInputStream?</p>
  
  <p>Thanks</p>