Adobe Acrobat - How to Trust Self-Signed Digital Signatures

Overview

This article provides instructions for you to trust self-signed digital signatures from parties you have established mutual trust with.

Trusting a Self-Signed Certificate

If you are often working with a party, you can consider trusting the certificate to prevent accidentally signing a form where an actor is pretending to be them:

  1. Open the PDF containing the signature
  2. Open the Signatures panel, and select the signature
  3. On the Options menu, click Signature Details, and then click Certificate Details
  4. If the certificate is self-signed, contact the originator of the certificate to confirm that the fingerprint values on the Details tab are correct. Trust the certificate only if the values match the values of the originator
  5. Click the Trust tab, click Add To Trusted Certificates, and click OK
  6. In the Import Contact Settings dialog box, specify trust options, and click OK

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Untrusting a Self-Signed Certificate

Untrusting, or deleting, a self-signed certificates is useful if you accidentally trusted or are no longer working with a party:

  1. Select Preferences > Signatures
  2. In Identities & Trusted Certificates, click More
  3. Select the certificate, and click Remove

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