From:             askalski at gmail dot com
Operating system: Ubuntu
PHP version:      5.2.5
PHP Bug Type:     mcrypt related
Bug description:  mcrypt_generic_init requires IV in ECB mode

Description:
------------
mcrypt_generic_init() issues a PHP warning when an empty IV is supplied
(good), even in ECB mode (not so good).

>From the PHP documentation: "IV is ignored in ECB."

Since the IV is ignored in ECB mode, PHP should not issue any IV-related
warnings.

(Also tested php5.2-200711302330)


Reproduce code:
---------------
<?php
$td = mcrypt_module_open("des", "", "ecb", "");
mcrypt_generic_init($td, "01234567", "");
?>


Expected result:
----------------
I expect the code to run without any warnings.


Actual result:
--------------
Warning: mcrypt_generic_init(): Iv size incorrect; supplied length: 0,
needed: 8 in /tmp/php-5.2.5/ecb-test.php on line 3


-- 
Edit bug report at http://bugs.php.net/?id=43466&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=43466&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=43466&r=trysnapshot52
Try a CVS snapshot (PHP 5.3): 
http://bugs.php.net/fix.php?id=43466&r=trysnapshot53
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=43466&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=43466&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=43466&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=43466&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=43466&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=43466&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=43466&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=43466&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=43466&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=43466&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=43466&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=43466&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=43466&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=43466&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=43466&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=43466&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=43466&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=43466&r=mysqlcfg

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