Req #66650 [Com]: Support for CTR mode

Edit report at https://bugs.php.net/bug.php?id=66650&edit=1 ID: 66650 Comment by: narf at devilix dot net Reported by: clicky at erebot dot net Summary: Support for CTR mode Status: Open Type: Feature/Change Request Package: mcrypt related Operating System: Any PHP Version: Irrelevant Block user comment: N Private report: N New Comment: You can use ctr mode by just passing 'ctr' to mcrypt_encrypt(). All of the MCRYPT_MODE_* constants just define strings and are not actually necessary. In fact they don't help you with anything. MCRYPT_MODE_CBC = 'cbc' MCRYPT_MODE_ECB = 'ecb' etc. I'd rather suggest to deprecate usage of the MCRYPT_MODE_* constants. Previous Comments: ------------------------------------------------------------------------ [2014-02-05 21:36:23] clicky at erebot dot net Description: ------------ Please add support for the CTR encryption mode (MCRYPT_MODE_CTR). See also attached patch against PHP 5.5.x which adds the necessary code and also defines a deprecated function mcrypt_ctr() (for consistency with other modes). Test script: --------------- <?php $key = "FooBar"; $secret = "PHP Testfest 2008"; $cipher = MCRYPT_RIJNDAEL_128; $iv = mcrypt_create_iv(mcrypt_get_iv_size($cipher, MCRYPT_MODE_CTR), MCRYPT_RAND); $enc_data = mcrypt_ctr($cipher, $key, $secret, MCRYPT_ENCRYPT, $iv); var_dump(bin2hex($enc_data)); ?> Expected result: ---------------- string(34) "5e42855e8236dacdb8fafbdaa12d176f13" Actual result: -------------- Bunch of errors due to lack of MCRYPT_MODE_CTR constant and undefined function mcrypt_ctr(). ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=66650&edit=1