Across the last [N=12] supplier agreements that missed their effective date, diagnose where approvals broke down: rout…
Open the received PDF file in Adobe Acrobat.
Locate the signature panel by clicking the small ribbon icon or by selecting Signatures from the left pane.
Click on the signature you want to validate in the signature panel.
In the signature details dialog that appears, review the message indicating the signature's validity status (such as 'Signature is valid', 'Signature is invalid', or 'Signature validity is unknown').
Click on the signature details to view detailed information about the certificate, including the signer's identity and the certificate authority.
If the signature status is not valid or unknown, expand the certificate details to inspect the certificate chain and verify the trust status.
If prompted that the certificate is not trusted, follow the prompts to add the certificate to your list of trusted identities if you recognize and trust the signer.
CautionOnly trust certificates from known and verified sources to avoid security risks.
Close the dialogs and confirm the updated signature status in the signature panel.
You can quickly check a signature’s status by hovering over the signature badge in the document or opening the Signatures panel.
This runs in the Acrobat app - there is no separate API for this task.
Certifying a PDF is a stronger action than a regular digital signature. When you certify a document, you declare that the content is approved and final. After certification, if anyone makes changes, Acrobat will show a clear warning. A regular digital signature only proves who signed it, but doesn't prevent or warn about changes to the document content as strongly as certification does.
It is important to certify a PDF document to ensure its trustworthiness and integrity. Certifying makes it clear that the document's content is approved and has not been changed since it was certified. This helps prevent fraud and ensures that people can rely on the document's original information.
Yes, an organization can use the PDF Electronic Seal API for this purpose. This API allows a company to apply an official organizational seal to documents, which is different from a personal digital signature. It helps automate the process of marking documents as officially from the organization, often meeting standards like eIDAS.
A digital ID is like your electronic passport. It contains your private key, which is a secret code used to create your unique digital signature, and a public key that others use to verify your signature. You need a digital ID to certify a PDF because it proves your identity and ensures that the certification comes from you, making the document legally binding and trustworthy.