koseven/modules/encrypt/config/encrypt.php

<?php

return [

	'default' => [
		'type' => 'mcrypt',
		/**
		 * The following options must be set:
		 *
		 * string   key     secret passphrase
		 * integer  mode    encryption mode, one of MCRYPT_MODE_*
		 * integer  cipher  encryption cipher, one of the Mcrpyt cipher constants
		 */
		'cipher' => MCRYPT_RIJNDAEL_128,
		'mode' => MCRYPT_MODE_NOFB,
	],

];