ID:               46010
 Updated by:       [EMAIL PROTECTED]
 Reported By:      d_kelsey at uk dot ibm dot com
-Status:           Open
+Status:           Closed
 Bug Type:         mcrypt related
 Operating System: Windows XP
 PHP Version:      5.2.6
 New Comment:

This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.




Previous Comments:
------------------------------------------------------------------------

[2008-09-06 15:36:45] d_kelsey at uk dot ibm dot com

Description:
------------
With the functions 
mcrypt_encrypt, mcrypt_decrypt with MCRYPT_MODE_ECB and mcrypt_ecb, by
not providing an initial vector or providing one that isn't at the
correct block size results in a warning being generated. 

ECB mode never uses the initial vector, so a warning is irrelevant. 

Reproduce code:
---------------
<?php
// the same type of results can also be seen with mcrypt_ecb,
mcrypt_decrypt
var_dump(bin2hex(mcrypt_encrypt(MCRYPT_TRIPLEDES, "key", "data",
MCRYPT_MODE_ECB)));
var_dump(bin2hex(mcrypt_encrypt(MCRYPT_TRIPLEDES, "key", "data",
MCRYPT_MODE_ECB, "a")));
var_dump(bin2hex(mcrypt_encrypt(MCRYPT_TRIPLEDES, "key", "data",
MCRYPT_MODE_ECB, "12345678")));
?> 

Expected result:
----------------
string(16) "372eeb4a524b8d31"
string(16) "372eeb4a524b8d31"
string(16) "372eeb4a524b8d31"

Actual result:
--------------
Warning: mcrypt_encrypt(): Attempt to use an empty IV, which is NOT
recommend in C:\udata-eclipse\p8\a.phpcode\mcrypt_ecb.php on line 2
string(16) "372eeb4a524b8d31"

Warning: mcrypt_encrypt(): The IV parameter must be as long as the
blocksize in C:\udata-eclipse\p8\a.phpcode\mcrypt_ecb.php on line 3
string(16) "372eeb4a524b8d31"
string(16) "372eeb4a524b8d31"


------------------------------------------------------------------------


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