4 Replies Latest reply on May 17, 2017 11:43 AM by mattb06051975

    How to add attachments to a digitally signed document

    mattb06051975 Level 1

      I have a dynamic document which was built in LiveCycle Designer which requires multiple digital signatures and the ability to add attachments. Currently the ability to add attachments only exists when the document has no digital signatures and only with Acrobat Pro. The add attachment feature is grayed out once a digital signature is applied. This document is an enterprise document that is intended to go through a workflow (hence the reason for multiple digital signatures). Additionally the Interactive Objects menu is also grayed out on my form so the ability to add a button is not available (this is grayed out even with no digital signatures). I am open to the idea of adding a button in LiveCycle but I haven't found a JS that has worked yet (this is without me adding the complication of having any digital signatures in the form yet).

       

      Any Ideas??

       

      Adobe products being used;

      LiveCycle Designer ES4

      Adobe Acrobat Pro

      Adobe Acrobat Reader DC

       

      R/

      Matt

        • 1. Re: How to add attachments to a digitally signed document
          Mathieu Fortin Level 1

          Attachments are signed content. Adding/removing an attachment in a signed pdf would invalidate the signature. All attachments need to be added before the first signature.

          • 2. Re: How to add attachments to a digitally signed document
            mattb06051975 Level 1

            I appreciate the quick response and I am in agreement with you. What I am looking for a workaround, if adding a button in LiveCycle would allow me to add attachments than that would be great. Or, if I could remove some of the security features that normally go with digital signatures than I am ok with that too. 

            • 3. Re: How to add attachments to a digitally signed document
              Mathieu Fortin Level 1

              It doesnt matter if the attachment is added through a button, an action in a gui, or programmatically. You end up with a change to the signed document that will invalidate (red x) all previous signatures. This is not a feature  you can disable as its essentially just digest/hash comparison.

               

              If you want to work around this, you need to change your workflow. On the top of my head (i dont know if its possible with livecycle) if adding all attachments before signing is not possible, you could for example create a "wrapper" pdf and add, as attachments, both the multi-signed pdf and other attachments. You could then sign this wrapper pdf at the end to preserve integrity of the whole package.

              • 4. Re: How to add attachments to a digitally signed document
                mattb06051975 Level 1

                Just so that I am understanding you correctly. You are saying to make a new blank PDF and add my form which does have digital signatures as well as any other file type attachments (doc, PPT, PDF   etc etc...)? I just tried this and it worked as described in Pro but not in Reader. The Add attachment feature is grayed out in Reader. In Reader; I tried this with a version I saved with reader extensions enabled and another version where I did not save it with reader extensions enabled, I got the same result.