Verifying a Time Stamp Certificate
The date and time for signatures is the local time on the signer’s computer. Some users, however, use a Time Stamp server, which is recorded in the Signature Properties dialog. To then validate a signature using a time stamp, you must add the certificate for the Time Stamp server to your Trusted Identities list. Otherwise, you will need to validate the time stamp manually.
To verify a time stamp certificate:
- Right-click a signature and select Verify Signature.
- In the Validation Status dialog box, click Properties.
- In the Signature Properties dialog box, click the Date/Time tab to view the time stamp authority. Then click the Show Certificate button if the signer time-stamped from a third-party authority.
- If the TSA certificate isnâ€™t trusted, click Add To Trusted Identities. If the TSA’s certificate is not listed, you will have to request it from the signer.