diff --git a/templates/signature.html.php b/templates/signature.html.php
index db027ff..d278e2f 100644
--- a/templates/signature.html.php
+++ b/templates/signature.html.php
@@ -193,13 +193,13 @@
                     <p><?php echo _("By enabling PDF sharing, you will be able to provide a link to the people of your choice so that they can sign this PDF."); ?></p>
                     <p><?php echo sprintf(_("%s This sharing requires the PDF to be transferred and stored on the server for future signers to access."), '<i class="bi bi-hdd-network"></i>'); ?></p>
                     <p class="mb-0"><?php echo sprintf(_("%s The PDF will be kept"), '<i class="bi bi-hourglass-split"></i>'); ?> <select name='duration' form='form_sharing'><option value='+1 year'><?php echo _("for one year"); ?></option><option value='+6 month'><?php echo _("for six months"); ?></option><option value='+1 month' selected='selected'><?php echo _("for one month"); ?></option><option value='+1 week'><?php echo _("for one week"); ?></option><option value='+1 day'><?php echo _("for one day"); ?></option><option value='+1 hour'><?php echo _("for one hour"); ?></option></select> <?php echo _("after the last signature."); ?></p>
+                    <input type="radio" id="encryption" name="encryption" value="true" form='form_sharing' checked/> <label for="encryption"><?php echo _("Activate server side PDF encryption"); ?></label>
                 </div>
                 <div class="modal-footer text-center d-block">
                     <form id="form_sharing" clas action="<?php echo $REVERSE_PROXY_URL; ?>/share" method="post" enctype="multipart/form-data">
                           <input id="input_pdf_share" name="pdf" type="file" class="d-none" />
                           <input id="input_svg_share" name="svg[]" type="file" class="d-none" />
                           <input id="input_pdf_hash" name="hash" type="hidden" value="" />
-                          <input id="input_symmetric_key" name="key" type="hidden" value="" />
                           <button  class="btn col-9 col-md-6 btn-primary" type="submit" id="save_share"><?php echo sprintf(_("%s Start sharing"), '<i class="bi bi-cloud-upload"></i>'); ?></button>
                     </form>
                 </div>