 <p>this values set in <a href="http://www.yiiframework.com/doc/api/1.1/CWebUser" rel="nofollow">CWebUser</a> class, in login method, look <a href="https://github.com/yiisoft/yii/blob/1.1.14/framework/web/auth/CWebUser.php#L715" rel="nofollow">this</a> and <a href="https://github.com/yiisoft/yii/blob/1.1.14/framework/web/auth/CWebUser.php#L227" rel="nofollow">this</a>.</p> <p>"8f9f85051824e063ad61f50fedc52f93" is prefix generated in method <a href="https://github.com/yiisoft/yii/blob/1.1.14/framework/web/auth/CWebUser.php#L542" rel="nofollow">getStateKeyPrefix</a></p>