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Digital signature

Digital signature at TÜV NORD GROUP

TÜV NORD GROUP operates an internal public key infrastructure. Certificates issued by TÜV NORD Public Key Infrastructure comply with the X.509 v.3 standard. TÜV NORD GROUP uses this infrastructure to grant its employees personal certificates which are used for secure e-mail communication and document signatures.

To be able to open digitally signed documents of TÜV NORD GROUP employees, you need our root certificate. You must install this on your personal computer. This allows you to exchange encrypted and digitally signed documents with our staff.

Import of the root certificate

You can find the TÜV NORD GROUP root certificate on the Public Key Infrastructure page of the TÜV NORD GROUP website.

To the TÜV NORD GROUP master certificate
Important links with the arrow pointing to the TÜV NORD GROUP master certificate

For the next step, click the link "TUEV NORD RootCAv3 Certificate" (see blue arrow). The root certificate of the TÜV NORD GROUP will open.

Certificate Import Wizard with selection and highlighted button

There click on "Install Certificate..."

Certificate Import Wizard with selection and highlighted button

In the certificate import wizard, the default save folder is "Current user".

If you have administrator privileges on your computer, you can also install the certificate for all users ("Local computer"). Click on "Next".

Certificate Import Wizard with selection and highlighted button

To select the certificate store, first click on "Browse…" and then select "Trusted Root Certification Authorities". Click on "Next".

Sicherheitswarnung mit hervorgehobenem Button

To complete the import, click on "Finish".

Security warning with highlighted button

A security warning will then appear on most computers.

This warning is intended to prevent third-party services from installing a certificate without a prompt.

Click on "Yes"

Certificate Import Wizard Info Import complete

The import process should now be successfully completed.

Click on "OK".

Certificate information

The certificate window that is still open can be closed by clicking on "OK".

Adjustment to Acrobat Reader

If you use Acrobat Reader to open documents, you should make an adjustment for the Windows integration of the certificates. This ensures that the documents signed by TÜV NORD can be verified as trustworthy.

The setting is shown using the current "Adobe Acrobat Reader DC".

Adobe Acrobat Reader DC mit hervorgehobenen Elementen

In Acrobat Reader, go to "Preferences" in the menu bar under "Edit".

Einstellungen für Adobe Acrobat Reader DC

There you select the category "Signatures" and click on "More..." on the right under "Verification".

Windows-Standardeinstellungen für die Überprüfung von Unterschriften mit hervorgehobenen Elementen

In the "Signature Verification Preferences" window, the options "Verify signatures" and "Verify certified documents" should be activated.

Then exit all open windows by clicking on "OK