11.2.1 for Windows

Foxit PDF Editor
Chapter 11: Signature User Manual
361
Validate Signatures
Signature validity is determined by checking the authenticity of the signature’s digital
ID certificate status and document integrity. Depending on how you have configured
your application, validation may occur automatically.
Set Signature Verification Preference
By default, Foxit PDF Editor will verify signatures when the document is opened, and
will check the certificate revocation status while verifying signatures. If you want to
change the setting, please go to File > Preferences > Signature, and uncheck the
corresponding option in Signing & Verifications group. For more information, please
refer to “Signature Preference”.
Set the Trust Level of a Certificate
The signature of a certified or signed document is valid if you and the signer have a
trust relationship. The trust level of the certificate indicates the actions for which you
trust the signer.
To set the trust level:
• Choose File > Preferences > Signature.
• Check the option(s) in Windows Integration group to trust all root certificates in
the Windows Certificate Store when validating signatures and certified documents.
Tip: You can specify the trust level for a specific certificate in Foxit PDF Editor Trusted
Certificates list while adding and managing the trusted certificate. Please refer to Add
Trusted Certificates and Manage Trusted Certificates for more information. If you configure
different settings for the same certificate, settings with higher permissions will prevail.
Remember that checking trust options may compromise security. Please make sure that
you trust all the root certificates before enabling the features.
Check the validity of a signature
By default, Foxit PDF Editor verifies signatures when the document is opened. An icon
appears on the left top of Signature Validation Status message box to indicate the
signature status. The signature state appears in the Signature Panel.