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Adding Digital Signatures to Existing PDF's

The Digital Signature Viewing Screen has 3 sections:

The upper section:

  1. Select between the "Hand" cursor and the "Cross hair" cursor.

    the "Hand" cursor gets used when you want to move the page around in order to choose the location for the digital signature place holder. You can also use the scrollbars to do this.
    the "Cross hair" cursor gets used to draw the digital signature place holder.

  2. Select the specific page on which you want the Digital Signature to be applied, you can:
    1. go to the first page
    2. go to the previous page
    3. insert page(s)
    4. move to the next page
    5. go to the last page
  3. Make the document larger using the zoom factor

The Original Pane:

This side of the screen shows what the PDF currently looks like.

 

The Signing Pane:

The Signing Pane shows a duplicate of the existing PDF and this is the side where you place your Digital Id based signature.

You can place your Digital Signature on any page of an existing PDF file (even on top of a previous signature that will be replaced):

  1. position the cursor where you will want the image to start from
  2. press the left mouse button
  3. drag your mouse and a shaded place holder will appear on the signing pane.


Once you have selected the page and position you want the Digital Signature to be placed, press to complete processing of your Digitally signed PDF file.

 

The following is an example of a PDF file signed using a Digital Signature.

If you decide NOT to create a Signed PDF file press .

You will be presented with 3 possible choices:

1 Save this PDF file with an Invisible Digital Signature. The document will be verifiable based on its Digital Signature. There will simply be no graphical reference on the PDF page or pages but the Digital Signature will be present and the Security flag ("Show Signatures") will be visible when viewing the PDF document.
2 Save this PDF file with no Digital Signature at all. The resulting file will be a normal unsigned PDF file.
3 Abort saving this PDF (stop processing a new PDF file now). This will not produce any output at all.

Additional Information

Digital Signatures

Creating New Digitally Signed PDF's

What is a Digital Certificate?

Definition of Root Certificate

X.509 Certificates

Where to get a Digital Certificate

Requesting Digital Certificates through Internet Explorer

How to Export a PFX File from Internet Explorer

Requesting Digital Certificates through Firefox

How to Import an Internet Explorer PFX File to Firefox

How to Export a PFX File from Firefox

Adobe Acrobat and Digitally Signed PDF Files

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