Certify and timestamp change logs as PDFs and manage the agreements so auditors can verify approvals and reduce compli…
Open the PDF file you want to sign in Adobe Acrobat.
Go to the toolbar and select Tools.
In the Tools center, find and select Certify and Sign.
In the toolbar, click Sign.
Use your cursor to draw the area in the document where you want the signature to appear.
In the dialog that appears, select your digital ID from the list and click Continue.
If prompted, enter your digital ID password and click Sign.
Choose a location to save the newly signed PDF, enter a filename, and click Save.
You can preview how your signature will look before you finalize and save the signed document.
This runs in the Acrobat app - there is no separate API for this task.
To apply long-term validation, you use Adobe Acrobat to add extra information to your signed PDF. This information helps anyone in the future check if the signature was valid when it was signed, even if the old certificates or websites are gone.
Long-term validation means making sure a digital signature can be checked and trusted years from now. It adds details to the file so people can always prove the signature was real, even if things change.
You should use long-term validation if you need to keep documents for a long time, like contracts, legal papers, or school records, so their signatures can always be trusted.
Regular validation only checks if a signature is valid right now, but long-term validation saves extra proof so the signature can be checked in the future, even if the original signing tools or certificates are not available.
It's important because digital certificates can expire or be removed, and long-term validation keeps the proof inside the document, so you can always show the signature was valid at the time it was signed.