First, it is important to note that a Code Signing Certificate can only be generated and exported from Firefox. The steps for exporting your code signing certificate and private key in Firefox are as follows:

  1. Click the “Open” menu
  2. Select “Options”
  3. Click on “Advanced” or “Encryption”
  4. Under the certificate tab, select “View Certificates”
  5. Under Your Certificates, click your certificate name
  6. Once highlighted, select “back up all” and enter in your passphrase