title: Multiple password encrypt/protect a single file
body: <p>This one is tough to Google. I'm trying to find a solution or API to encrypt/protect a file with multiple passwords. The passwords would be handed out to users separately.</p>
  
  <p>I looked at DotNetZip and the usual Zip and Rar solutions (including PKWare) for a way to multi-password protect a file.</p>
  
  <p>All suggestions are welcome! I wouldn't be posting this question if it was either impossible or uncommon. Thanks!</p>