note 85154 added to language.operators.bitwise

@nikodrumer at gmail dot com You could use XOR for cryptographic bases, but you should use the already implemented algorithms, if able. Encrypting an sensitive text using XOR can be done, and is safe if the length of the string is as long as or shorter as the length of the key. In all other cases the text could be broken with a polyalfabethic frequency analyse. In a short text this is rather difficult. But when the text is rather large (for example, 20*length of your key), it's done quite easely. And an MD5 doesn't make it safer, in fact, it makes the length of the key fixed, so it even gets easier for a potential analist/attacker to break the text. Therefor, there is no actuall reason to use this, 'cause there are plenty of other algorithms supplied, which are wáy safer. ---- Server IP: 83.137.20.135 Probable Submitter: 217.120.227.225 ---- Manual Page -- http://www.php.net/manual/en/language.operators.bitwise.php Edit -- https://master.php.net/note/edit/85154 Del: integrated -- https://master.php.net/note/delete/85154/integrated Del: useless -- https://master.php.net/note/delete/85154/useless Del: bad code -- https://master.php.net/note/delete/85154/bad+code Del: spam -- https://master.php.net/note/delete/85154/spam Del: non-english -- https://master.php.net/note/delete/85154/non-english Del: in docs -- https://master.php.net/note/delete/85154/in+docs Del: other reasons-- https://master.php.net/note/delete/85154 Reject -- https://master.php.net/note/reject/85154 Search -- https://master.php.net/manage/user-notes.php