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K
kevpWacom
Participant
February 6, 2023
Question

Digital signature plug in limitations

  • February 6, 2023
  • 3 replies
  • 450 views

I have an Acrobat plugin for digitally signing PDFs. It's focused on handwritten signatures and, as such, doesn't need to support either Time Stamp or invisible signatures. Is there a way to tell Acrobat not to use my plug in for those functions? Alternatively, can I tell if I'm being called for those functions and return a code for cancel/error (possibly after displaying an error message)?

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3 replies

K
kevpWacomAuthor
Participant
February 7, 2023

Sorry, I obviously need to make myself clearer: I am developing the plugin. I am combining a digital signature (ie, using a certificate) with a handwritten signature for the appearence in the PDF. 

My question is about how I interact with the Acrobat plugin API so that either the functionality my plugin doesn't support is disabled or it can "fail more gracefully" if it is called to do a time stamp or invisible signature

Thom Parker
Community Expert
Thom ParkerCommunity Expert
Community Expert
February 7, 2023

Yes, being clear about really complicated stuff is pretty important.

Along those lines, you haven't told us anything about how you implemented this plug-in. Which is also really important for us to know if you want some advice. 

 

For example, Did you create a security handler? or any other kinds of handlers, or anything that is registered with Acrobat (other than a button or menu item)?

Cause if you didn't, then there is no way the plug-in would be used by Acrobat for Time stamps or Signatures. 

But if you did, then why?  What exactly do you want this plug-in to do?

 

 

Thom Parker - Software Developer at PDFScriptingUse the Acrobat JavaScript Reference early and often
T
Test Screen Name
Legend
February 7, 2023

I think you MIGHT BE using the term 'digital signature' wrongly. Is there a certificate involved? How does the handwriting become part of the signature?

Thom Parker
Community Expert
Thom ParkerCommunity Expert
Community Expert
February 6, 2023

Contact the vendor. Only they can answer these questions. 

 

 

Thom Parker - Software Developer at PDFScriptingUse the Acrobat JavaScript Reference early and often
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