Digital Signatures/text/shared/01/digitalsignatures.xhp
Digital Signatures
Adds and removes digital signatures to and from your document. You can also use the dialog to view certificates.You must save a file before you can apply a digital signature to the file.You must save a file in OpenDocument format or OOXML format or export to PDF before you can apply an X509 digital signature to the file. You must save a file in OpenDocument format and have GnuPG installed on your system before you can apply an OpenPGP digital signature to the file.The signature will be a XAdES signature for ODF and OOXML, PAdES signature for PDF.
List
Lists the digital signatures for the current document.The Signed icon
Icon indicates a valid digital signature, while the Exclamation mark icon
Icon indicates an invalid digital signature.See also Digital Signatures.
View Certificate
Opens the View Certificate dialog.
Sign Document
Opens the Select Certificate dialog.
Remove
Removes the selected signature from the list. Removes all subsequent signatures as well, in case of PDF.
Start Certificate Manager
Opens the installed certificate manager of your system.On macOS, the default certificate manager is Keychain Access.On Windows systems, the default certificate manager is Certmgr.msc, a Microsoft Management Console snap-in using Certmgr.exe, and does not manage OpenPGP certificates. To manage both X509 and OpenPGP certificates install the gpg4win tool.