Before you can use digital signatures, you must have Adobe configured and your certificate included.
Security settings for digital signature with TCS-Geant/Sectigo certificates: https://tickets.tu-dresden.de/otrs/public.pl?Action=PublicFAQZoom;ItemID=946
Install personal certificate in Adobe: https://tickets.tu-dresden.de/otrs/public.pl?Action=PublicFAQZoom;ItemID=948
- Open the document you want to sign in Adobe. Then click "Tools" in the upper left corner.
Opened document
- Select "Use a certificate".
Tool overview
- Now select "Digitally sign" from the toolbar.
Digital signature selection
- Drag a rectangle at the point where you want the signature.
Creation of the signature
- Select your certificate from the list and click "Next".
Certificate selection
- Enter the certificate's password when prompted. Otherwise, click on "Sign".
Password request and confirmation
- Assign a new file name and save the document.
Save signed document
- Below the toolbar, you can see the validity of the signed document.
Signature validity check