note 68082 added to function.mcrypt-generic

If the data is already n*blocksize long, PHP pads with another full block of "\0", so there will be between 1 and mcrypt_enc_get_block_size($td) bytes of padding. You can create binary-safe padding by unconditionally adding a 0x80 to the string, then stripping trailing "\0"s PHP added, plus the one 0x80 byte. <?php function pad($text) { // Add a single 0x80 byte and let PHP pad with 0x00 bytes. return pack("a*H2", $text, "80"); } function unpad($text) { // Return all but the trailing 0x80 from text that had the 0x00 bytes removed return substr(rtrim($text, "\0"), 0, -1); } ?> ---- Server IP: 64.71.164.2 Probable Submitter: 69.205.153.76 ---- X-Spam-Status: No, hits=3.1 required=5.0 tests=DATE_MISSING,FROM_NO_LOWER autolearn=no version=2.64 ---- Manual Page -- http://www.php.net/manual/en/function.mcrypt-generic.php Edit -- http://master.php.net/note/edit/68082 Del: integrated -- http://master.php.net/note/delete/68082/integrated Del: useless -- http://master.php.net/note/delete/68082/useless Del: bad code -- http://master.php.net/note/delete/68082/bad+code Del: spam -- http://master.php.net/note/delete/68082/spam Del: non-english -- http://master.php.net/note/delete/68082/non-english Del: in docs -- http://master.php.net/note/delete/68082/in+docs Del: other reasons-- http://master.php.net/note/delete/68082 Reject -- http://master.php.net/note/reject/68082 Search -- http://master.php.net/manage/user-notes.php