74Aca‖Digital Signature Menu
        CDXV5‖Opens a menu for digital signature commands.
    
    
        
ebLJB‖From the menu bar:
        B7UTd‖Choose .
     
 
    
Ub7GZ‖Adds and removes digital signatures to and from your document. You can also use the dialog to view certificates.
 
    
        
    RM32g‖LibreOfficeDev can digitally sign an existing PDF document.