Force Minimum Password Length at Checkout

function sumobi_edd_set_minimum_password_length( $valid_data, $post_data  ) {

	// how many characters should the password be?

	$length = 8;

	if ( strlen( $post_data['edd_user_pass'] ) < $length ) {

		edd_set_error( 'password_too_short', sprintf( __( 'Please enter a password of %s characters or more.', 'edd' ), $length ) );

	}

}

add_action( 'edd_checkout_error_checks', 'sumobi_edd_set_minimum_password_length', 10, 2 );