Determining the file fingerprint of the OEM certificate file

You need this functionality to request a TwinCAT OEM Certificate Extended Validation (TC0008).

System requirements This functionality requires TwinCAT 3.1 build 4024 of higher.

Note for "OEM Certificate Request File" The "OEM Certificate Request File" becomes the TwinCAT OEM certificate once it is signed by Beckhoff. The files do not differ except for this signature. For this reason, the term "TwinCAT OEM certificate file" is used for both file versions in the following sections.

Reading the "file fingerprint" of an OEM certificate file via TwinCAT 3 Engineering

For this function it is necessary that the OEM certificate file is located in this directory: "c:\twincat\3.1\customconfig\certificates".

Notes:

• This directory contains your OEM certificate, if you already have a certificate and want to renew it.
• If you did not change the suggested directory when creating the "OEM Certificate Request File", the file is already in this directory.

Procedure:

1. Call up the TwinCAT 3 Software Protection configurator
   
2. Select the "Certificates" tab
3. Check the "Extended Info" box
4. In the window scroll to the right until you see the Fingerprint column

Note: As an alternative to points 3 + 4, you can simply double-click the certificate line. The file fingerprint is then displayed in a pop-up window:

Note: The shortcut Ctrl + C can be used to copy the fingerprint data from the message window to the Windows clipboard.