title: How to encrypt iOS files (e.g. PDFs) from user access?
body: <p>Is there a way to secure files downloaded within an app to prevent them from being accessed by the user via a jail broken device, or something like iExplorer when the device is plugged into a computer ?</p>
  
  <p>I'm primarily thinking of things like PDF files, and have considered encrypting them in someway and then storing the data in an sqlite database. The other thing I've looked into is 'NSDataWritingFileProtectionComplete' but that only seems to encrypt data when the phone is locked.</p>
  
  <p>Any suggestions more than welcome. Thanks.</p>