Multisite Network Settings

With the new Google ReCaptcha,

Is there a way to add security keys to the Main Site for the entire network or add these keys to wp-config.php so you don’t have to perform the same action on every site?

This would be a great time-saver.

Thank you

P.S.
(Gravity Forms offers this in-case you want to take a look)
/** Define globals for Gravity Forms */
define( ‘GF_LICENSE_KEY’, ‘*********’ );
define( ‘GF_RECAPTCHA_PUBLIC_KEY’, ‘*********’ );
define( ‘GF_RECAPTCHA_PRIVATE_KEY’, ‘*********’ );