Timestamped and verified from a timestamp server Time validity: shows that the timestamp of the PDF document is one of the following:īased on the clock from the signer’s computer Validate signature: confirm the validity of a digital signatureĭocument modification: see whether the document is unchanged, or if the file is restricted to permitted changes, such as filling-in form fields The Signature Properties dialog appears, and lets you do the following: To see more information about a digital signature or certificate from the page of a PDF document, click on the signature. View signatures and certificates on the page of a PDF document The certificate is invalid, or illegal changes have been made to the document The identity of the signer was not able to be verified, but the document has not been changed since this signature was added The identity of the signer was not able to be verified, and the current view of the document is not the same as when it was signed The identity of the signer was successfully verified, but the current view of the document is not the same as when it was signed The identity of the signer was successfully verified, and the document has not been changed since this signature was added. This document is certified, and the document has not changed in a way not permitted by the certificate A yellow rectangle highlights the selected signature. TIP: To jump to the location of a signature in the document, click on the signature in the Signature pane. To open the Signatures pane, click the Signatures tab. If your PDF document contains signatures, the Signatures tab appears on the left of the window. The Signatures pane lists all signatures in the PDF document, shows their validity status, and provides a summary of each signature. Look at certificates and signatures on the page of the PDF document View certificates and signatures in the Signatures pane To view the status of your certificates and signatures, do one the following: Signatures are validated when a document is opened, and then automatically re-validated when anyone changes the document. View and validate certificates and signatures
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