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Bug #49311 WAKE, enigma and arcfour ciphers fail to initialize
Submitted: 2009-08-20 15:06 UTC Modified: 2009-09-27 01:00 UTC
Votes:5
Avg. Score:4.2 ± 1.0
Reproduced:4 of 4 (100.0%)
Same Version:1 (25.0%)
Same OS:3 (75.0%)
From: c58999 at tyldd dot com Assigned:
Status: No Feedback Package: mcrypt related
PHP Version: 5.3.0 OS: Windows
Private report: No CVE-ID: None
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 [2009-08-20 15:06 UTC] c58999 at tyldd dot com 
Description:
------------
The arcfour algoritm fails to initialize on PHP 5.3.0 win32. This also appears to happen with the wake and enigma ciphers. I could also reproduce this behaviour on PHP 5.2.6-2ubuntu4.2.

Reproduce code:
---------------
$algs = mcrypt_list_algorithms();

foreach($algs as $alg){
	echo "$alg\n";
	$td = mcrypt_module_open($alg, '', 'ecb', '');
	echo "\n";
}

Expected result:
----------------
I would expect this code to execute without any errors.

Actual result:
--------------
C:\php>php mcrypt.php
cast-128
gost
rijndael-128
twofish
cast-256
loki97
rijndael-192
saferplus
wake
PHP Warning:  mcrypt_module_open(): Could not open encryption module in C:\php\mcrypt.php on line 6
blowfish-compat
des
rijndael-256
serpent
xtea
blowfish
enigma
PHP Warning:  mcrypt_module_open(): Could not open encryption module in C:\php\mcrypt.php on line 6
rc2
tripledes
arcfour
PHP Warning:  mcrypt_module_open(): Could not open encryption module in C:\php\mcrypt.php on line 6

Patches

enigma (last revision 2013-07-02 21:11 UTC by pacodumas2010 at yahoo dot es)

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2009-09-19 14:48 UTC] jani@php.net 
Please try using this snapshot:

  http://snaps.php.net/php5.3-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/
 [2009-09-27 01:00 UTC] php-bugs at lists dot php dot net 
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2011-11-07 19:20 UTC] vseticka dot martin at gmail dot com 
http://stackoverflow.com/questions/8040901/how-to-encrypt-with-mcrypt-arcfour-in-wamp/8041271 - this question shows that the bug seems to be still present.
 [2015-05-15 19:46 UTC] dewi at dewimorgan dot com 
Still extant in 5.4.16
 [2015-05-15 20:38 UTC] dewi at dewimorgan dot com 
Still extant in:
PHP 5.6.9 (cli) (built: May 13 2015 19:28:50)
Downloaded as latest stable from windows.php.net as:
VC11 x86 Thread Safe (2015-May-14 18:29:57)

The link above to snaps.php.net is unable to connect, so I cannot test it.

The version at http://windows.php.net/snapshots/ also shows this behavior.

I am testing using the following code:
<?php
foreach(mcrypt_list_algorithms() as $alg) {
    printf("\n%15s:  ", $alg);
    foreach(mcrypt_list_modes() as $mode) {
        $mc = @mcrypt_module_open($alg, null, $mode, null);
        if(is_resource($mc)) echo "Y:$mode  ";
        else echo "N:$mode  ";
    }
}
echo "\n";

I run it as:
php crypttest.php | sort
The output is:
N:cbc  N:cfb  N:ctr  N:ecb  N:ncfb  N:nofb  N:ofb  Y:stream  arcfour
N:cbc  N:cfb  N:ctr  N:ecb  N:ncfb  N:nofb  N:ofb  Y:stream  enigma
N:cbc  N:cfb  N:ctr  N:ecb  N:ncfb  N:nofb  N:ofb  Y:stream  wake
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  blowfish
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  blowfish-compat
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  cast-128
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  cast-256
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  des
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  gost
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  loki97
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  rc2
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  rijndael-128
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  rijndael-192
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  rijndael-256
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  saferplus
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  serpent
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  tripledes
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  twofish
Y:cbc  Y:cfb  Y:ctr  Y:ecb  Y:ncfb  Y:nofb  Y:ofb  N:stream  xtea

This may mean that it's working as expected: that the first three (arcfour, enigma, and wake) are stream-only cyphers, and that all the other cyphers work only in non-stream modes?

If so, this is possibly a documentation issue rather than a real issue.
 
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