title: PDF online digital signature
body: <p>We are building a Java website to share documents with users.</p>
  
  <p>Once a user access to his documents, he can digitally sign them with his certificate (It is stored on client-side).</p>
  
  <p>The requirement is an on-line sign with a “sign button” on the documents list.</p>
  
  <p>We researched ways to accomplish the requirement but apparently, there is not a way to do that without using Java Applet or a secured server that contains the users certificates.</p>
  
  <p>We know what other solution would be use <a href="http://itextpdf.com/" rel="nofollow noreferrer">Itext</a> on a stand-alone Java Application but that is not an online solution.</p>
  
  <p>The question is:</p>
  
  <p>Is there a way to access to the user's key-store or load the certificate from the file system on the sign process without use an applet?</p>
  
  <p>Thanks and regards.</p>