PHP Warnings Crypt_Base.php on line 915

[Django-BOfH]

I have a lot of error-messages like this one:

[Fri Jun 20 17:54:56 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 9
15
[Fri Jun 20 17:54:56 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 9
15
[Fri Jun 20 17:54:57 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 915
[Fri Jun 20 17:54:58 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 915
[Fri Jun 20 17:54:58 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 915
[Fri Jun 20 17:54:59 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 915
[Fri Jun 20 17:55:00 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 915
[Fri Jun 20 17:55:00 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 915
[Fri Jun 20 17:55:01 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 915
[Fri Jun 20 17:55:01 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 915
[Fri Jun 20 17:55:02 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 915
[Fri Jun 20 17:55:02 2014] [error] [client aaa.bbb.ccc.ddd] PHP Warning: mdecrypt_generic(): An empty string was passed in /var/www/dokuwiki/inc/phpseclib/Crypt_Base.php on line 915

I'm using Release 2014-05-05 "Ponder Stibbons".

The IP adresses all foreign adresses, either there's a bug, a big fail in my settings, or someone is attacking my wiki. :/

[dariovolaric]

I have the same problem. I get this line only once after updating from an old version.

[dryoo]

I have same problem. I think it is related with captcha plugin because it occurs when I edit a page.

2014/09/16 00:50:54 [error] 27907#0: *5287596 FastCGI sent in stderr: "PHP message: PHP Warning: mdecrypt_generic(): An empty string was passed in /home/www/wiki/inc/phpseclib/Crypt_Base.php on line 915" while reading response header from upstream, client: 117.123.152.189, server: openwiki.kr, request: "POST /syntax?do=edit&rev=0 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "openwiki.kr", referrer: "http://openwiki.kr/syntax?do=edit&rev=0"

Only when I use chrome browser, but not in IE, FF & Opera

[InfoLibre]

Same problem with captcha : splitbrain/dokuwiki-plugin-captcha#42

[casperklein]

Same here after upgrading to Dokuwiki Release 2014-05-05a "Ponder Stibbons":

[01-Oct-2014 16:20:44] PHP Warning:  mdecrypt_generic(): An empty string was passed in /blog/inc/phpseclib/Crypt_Base.php on line 915
[01-Oct-2014 16:20:52] PHP Warning:  mdecrypt_generic(): An empty string was passed in /blog/inc/phpseclib/Crypt_Base.php on line 915
[01-Oct-2014 16:23:45] PHP Warning:  mdecrypt_generic(): An empty string was passed in /blog/inc/phpseclib/Crypt_Base.php on line 915
[01-Oct-2014 16:37:14] PHP Warning:  mdecrypt_generic(): An empty string was passed in /blog/inc/phpseclib/Crypt_Base.php on line 915
[01-Oct-2014 16:38:58] PHP Warning:  mdecrypt_generic(): An empty string was passed in /blog/inc/phpseclib/Crypt_Base.php on line 915

I made no changes to dokuwiki pages in that time range (no one else has permissions above "read"). I guess just viewing a page in dokuwiki can trigger that error.

[chang-zhao]

I'm trying to use Dual Login from JFusion integration with Joomla 3.
When I login in Joomla and go to DokuWiki page I get messages:

Warning: mdecrypt_generic(): An empty string was passed in C:\localhost\wiki\inc\phpseclib\Crypt_Base.php on line 915

Warning: Cannot modify header information - headers already sent by (output started at C:\localhost\wiki\inc\phpseclib\Crypt_Base.php:915) in C:\localhost\wiki\inc\auth.php on line 542

Warning: Cannot modify header information - headers already sent by (output started at C:\localhost\wiki\inc\phpseclib\Crypt_Base.php:915) in C:\localhost\wiki\inc\actions.php on line 217

Warning: Cannot modify header information - headers already sent by (output started at C:\localhost\wiki\inc\phpseclib\Crypt_Base.php:915) in C:\localhost\wiki\lib\tpl\dokuwiki\main.php on line 12

Actually JFusion seems to generate cookie "DW..." so I should login to DokuWiki, but it doesn't happen.
I set cookiedir to "/" (instead of "/wiki/"), so JFusion puts cookies ("/") where they should be read. I only wonder what's wrong.
Maybe some encoding method changed or some security measures meddled in?

[Klap-in]

It appears that there are certain set of users affected by this, but so far I could not find some shared pattern between them. Has someone suggestions?

[chang-zhao]

JFusion developer said: "Probably in a new DokuWiki release they changed authentication cookies again", so some discrepancy with a plugin appeared.

[casperklein]

For me, the problem went away. But I don't know exactly why. I guess the upgrade to the next release (I was on Ponder Stibbons when first posted here) or upgrading securelogin plugin fixed it for me.
Hope that helps a bit.

[Klap-in]

Do you have still PHP Warnings appearing from Crypt_Base.php in your DokuWiki?

[panigrc]

The issue hasn't been updated last 2 years and I suppose the problem went away.
So I would propose closing this issue.

[phy25]

Since the file involved is already deleted, I am closing this.

https://github.com/splitbrain/dokuwiki/blob/cbaf278c50e5baf946b3bd606c369735fe0953be/data/deleted.files#L26