hooks.kollide_password_protect.php

<?php
class Hooks_kollide_password_protect extends Hooks
{
	public $meta = array(
		'name'       => 'Kollide - Password Protect',
		'version'    => '1.0.0',
		'author'     => 'Sean Washington',
		'author_url' => 'http://octopuscreative.com'
	);

	public function control_panel__publish($publish_data)
	{
		$should_be_password_protected = !!array_get($publish_data, 'yaml:should_be_password_protected', false);

		if (isset($should_be_password_protected) && $should_be_password_protected == true) {
			// _protect:
			//   password:
			//     allowed: [ "my-password", "another-password"]
			$publish_data["yaml"]["_protect"]["password"]["allowed"] = $publish_data["yaml"]["password"];
		} else {
			unset($publish_data["yaml"]["_protect"]);
			unset($publish_data["yaml"]["password"]);
		}

		return $publish_data;
	}
}