Certificate files with the .crt extension are commonly distributed by certificate authorities for certain types of digital certificates. However, Microsoft Windows, Nokia Symbian and some other operating systems require DER X.509 encoded .cer certificate files. This tutorial demonstrates the conversion of these certificates on a Windows 7/Vista device for compatibility with these platforms.
Step 1. - Download the certificate
In our tutorial we have downloaded a file called cacert.crt and placed it on the Desktop.
Step 2. - Open the Certificate Details Window
Step 3. - Click the 'Copy to File' button
Step 4. - Follow the "Certificate Export Wizard"
Step 5. - Delete the .crt file (Optional)
- The '.crt' file can now be deleted if it is no longer required.
You should not be able to utilise your certificate as required. If you're using your newly converted certificate to add a trusted certificate authority to Nokia Symbian you can check out another post of mine for more information on this topic.
If you have any feedback on this tutorial or any of my content use the social media buttons below!