Importing the certificate into Firefox storageīear in mind that to import a certificate in Mozilla Firefox it is necessary for your backup copy to have been created with a password, since in order to install it on this browser it is mandatory to enter the 'backup password'. If you also wish to use it on other browsers (Safari or Google Chrome) import it in 'Keychain Access' on your Mac. If you are using a Mac operating system and your web browser is Mozilla Firefox, your electronic certificate must be installed in the browser certificate storage.