Checking a password is identical to another input one

I need to check that a typed in password is what the user thinks is typed in.

For this I ask for the password to be typed in twice.

I have some existing validation in place but nothing for multiple fields yet.

I wondered how to have the validator check its field against another field.

I could find the syntax for it: 'token' => 'password'

Here is the way to do it:

    array(
        'name' => 'password',
        'required' => true,
        'filters' => array(),
        'validators' => array(),
    ),
    array(
        'name' => 'passwordBis',
        'required' => true,
        'filters' => array(),
        'validators' => array(
            array(
                'name' => 'identical',
                'options' => array(
                    'token' => 'password',
                    'messages' => array(
                        \Zend\Validator\Identical::NOT_SAME => \Application\Util\Translator::translate('The two passwords must be identical')
                    )
                )
            )
        ),
    ),