3. Configure the timestamp server
While your personal certifacte suffices to show that you created a signed document it is not able to provide any security against tampering at a later date. You can mitigate this by using a Timestamp-Service to provide your signed document with a timestamp. Therefore one can easily assess whether or not a singed document was unknowingly changed afterwards by comparing the timestamp from the signature to the last modified date of the document.
The DFN-Verein provides its own Timestamp-Service. This ensures that no corrupted time can be used improperly.
To make it more comfortable for you to import the timestamp server, you will find a .fdf-file here:
1. Download the .fdf-file (TimestampServer-UoC.fdf)
2. Execute it with Adobe Reader or Adobe Acrobat.
3. Click on 'Import' in the window that opens [Picture 1].
4. Confirm the security message with 'Yes' to use the time stamp server by default [Picture 2].
5. Confirm the appearing message with 'OK' [Picture 3].
If you have any questions or problems, please contact the RRZK-Helpdesk