You can export a PEM-format certificate from a Mac.


Become familiar with how to use Keychain Access on a Mac. For more information, see the Apple Support Web site at


  1. On the Mac, open Keychain Access.
  2. From the sidebar, select System Roots.
  3. Locate the certificate to export.
  4. Select File > Export Items.
  5. Select a location to save the certificate and select the Privacy Enhanced Mail (.pem) file format.