title: Download and View PDFs in iPhone
body: <p>I'm planning to develop an iPhone app in which will do the following:</p>
  
  <ol>
  <li>download PDF file from my
  website.</li>
  <li>open PDF file which is password
  protected</li>
  <li>access this PDF file offline from
  the iPhone</li>
  </ol>
  
  <p>I really want to know how to achieve the above, what classes to use and what tips should I consider?</p>
  
  <p>Thanks</p>