title: How to encrypt StorageFile in Windows store app (C#/XAML)?
body: <p>I am developing an app which downloads some confidential document. I will download them in <code>LocalFolder</code>. But I want to store <code>StorageFile</code> in encrypted form, so any geek user can't access those files easily by going to <code>C:\Users\&lt;user_name&gt;\AppData\Local\Packages</code></p>
  
  <p>I have checks <a href="http://msdn.microsoft.com/en-us/library/windows/apps/hh465017.aspx" rel="nofollow">MSDN samples</a> about Cryptography, but they doesn't seem quite useful to me. So is there any native WinRT API or 3rd API available, which encrypts the files so it can't be open easily by just "double clicking" on it and when my app request for particular file then the <code>StorageFile</code> will be decrypted and it will be displayed in my app.</p>