11.2.1 for Windows

Foxit PDF Editor
Chapter 11: Signature User Manual
364
1. The signature is verified using the secure time provided by a timestamp or at
which the signature was applied.
2. The signed PDF has not been altered and the certificate has not been revoked
or expired.
3. The certificate revocation status is embedded in the signed PDF. Embedding
certificate revocation information can occur when the document is signed and
saved.
From the Signature panel, you can check whether the signature is LTV enabled or not
after validation. In some cases, the certificate revocation information may not be
embedded successfully in the document when you sign the document (especially
when you are offline) and you will be informed the signature is not LTV enabled. You
can right-click the signature and choose Add verification information to add the
information to the signature.
Note: To use secure time for verification, after clicking Change Settings for Singing &
Verifications in File > Preferences > Signature, select the Time at which the signature
was created, or Secure time (timestamp) embedded in the signature if a trusted
timestamp is embedded.
View signed versions of a digitally signed PDF
A signed version will be automatically saved each time you sign a PDF with a digital
signature. If a digitally signed document was modified, you can still view the signed
version without the modification. For a document digitally signed several times, you
can view each signed version without the changes made after each signature was
applied. All signed versions along with their corresponding digital signatures are listed
in the Digital Signatures panel.
To view a signed version of a digitally signed PDF, do as the following:
1. Open the signed document with Foxit PDF Editor.
2. In the Digital Signatures panel in the navigation pane, select and expand a
signature, and choose Click to view this version. Or right-click the signature in
the document pane with the Hand command and choose View Signed Version
from the context menu.
3. Then this version will be opened in a new tab in the application window, with the
title of “filename.pdf-Signed Version”. (Note: If the document has not been modified
since the selected signature was applied, a prompt appears saying you are already
viewing the version covered by the selected signature.)
4. (Optional) Following each signed version in the Digital Signatures panel lists the
changes made to the signed version. Clicking on one of the changes will jump to