11.2.1 for Windows

Table Of Contents
Foxit PDF Editor
Chapter 11: Signature User Manual
362
The question mark icon indicates the signature is not validated.
The check mark icon indicates that the signature is valid.
The icon indicates that the signature is invalid. The document has been altered
or corrupted since the signature was applied.
The caution triangle icon indicates the document was modified after
signature was added; however, the signature is valid.
The icon indicates the signature validity is unknown because the signer’s
certificate isn’t in your list of trusted identities.
If you open a certified PDF file with notification-related message enabled, Foxit PDF
Editor will display a notification message informing you that the document is certified.
You can click Signature Panel on the notification message to check the details about
the document certification and signatures in the Digital Signatures panel.
Check certificate revocation status
By default, Foxit PDF Editor will check the certificate revocation status while validating
a signature if the certificate used to sign a PDF file chains up to a certificate designated
as a trusted anchor. Revocation checks are performed based on the revocation
information embedded in the digitally signed PDF document, the digital signature, or
the Certificate Revocation List (CRL). To view the certificate revocation information,
please do the following:
1. Do one of the following:
Choose Protect > Sign & Certify > Trusted Certificates, and double-click the
certificate.
In the Digital Signatures panel, right-click the signature, choose Show
Signature Properties, and then click Show Certificate.
2. In the Certificate Viewer dialog box, click Revocation tab to view the revocation
information, and click Signer Details to get more information on the source of
the revocation information.
3. (Optional) If you do not check Require certificate revocation checking to
succeed whenever possible during signature verification option in Signature
preferences, you can click Check Revocation in the Revocation tab to perform
revocation check manually.