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This wiki describes what and how to implement digital signatures in a PDF.

Pre-requisite

When you receive a digitally signed document, both Adobe Reader and Acrobat ask three key questions to validate the signature:

  1. Is the digital certificate that signed the document still valid? Has it expired or been revoked?
  2. Has the document been changed since it was signed? Has the integrity of the document been affected? If there are changes, are they allowed changes or not?
  3. Finally, does this certificate chain up to a certificate listed in the Trusted Identity list? If so, the signature will be trusted automatically.


  1. Digital ID
    1. How to create a Digital ID (click on the link to download the pdf guide)
    2. How to get your Digital ID Cert Authority (CA) certified

  2. Using the Digital ID sign a PDF


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