rhymix/classes/security/htmlpurifier/library/HTMLPurifier/ConfigSchema/schema/URI.MungeSecretKey.txt
flyskyko e4306a789f Merge 1.5.2.3 (~r10623)
git-svn-id: http://xe-core.googlecode.com/svn/trunk@10624 201d5d3c-b55e-5fd7-737f-ddc643e51545
2012-04-26 09:17:29 +00:00

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Text

URI.MungeSecretKey
TYPE: string/null
VERSION: 3.1.1
DEFAULT: NULL
--DESCRIPTION--
<p>
This directive enables secure checksum generation along with %URI.Munge.
It should be set to a secure key that is not shared with anyone else.
The checksum can be placed in the URI using %t. Use of this checksum
affords an additional level of protection by allowing a redirector
to check if a URI has passed through HTML Purifier with this line:
</p>
<pre>$checksum === sha1($secret_key . ':' . $url)</pre>
<p>
If the output is TRUE, the redirector script should accept the URI.
</p>
<p>
Please note that it would still be possible for an attacker to procure
secure hashes en-mass by abusing your website's Preview feature or the
like, but this service affords an additional level of protection
that should be combined with website blacklisting.
</p>
<p>
Remember this has no effect if %URI.Munge is not on.
</p>
--# vim: et sw=4 sts=4