. Thanks to
// Hackers-IL et al. for the original code and header style.
//
// Adapted from the code available at
// http://www-2.cs.cmu.edu/~dst/DeCSS/Gallery/css_descramble-js.txt
// and distributed under the same licensing terms (i.e. "who knows").
//
// This code is known to take input and produce gibberish output (in the
// form of HTML charater entities: &#D; , where D is a decimal value
// for [in this case] a single byte). The gibberish appears to match the
// stuff produced by the javascript code.
//
// Known Bugs:
// 1. Non 8-bit characters will cause trouble. The accept-charset value in
// the form tag has been specified as "iso-8859-1", but some browsers might
// ignore it. The output is indifferent to charset.
//
// Tested on the mighty www.sccs.swarthmore.edu:
// * Debian GNU/Linux (Intel) v2.2r4
// * Apache 1.3.9
// * PHP 4.0.3pl1
// * (client) MSIE 5.1.3 for MacOS X; Character Set => "Western (Latin 1)"
//
// Changes Log:
//
// 6-Jan-2002 - original working transliteration
//
// Visit http://www.sccs.swarthmore.edu/users/02/tss/css-descramble.php
// to try out the code.
// We begin:
// Circumvent PHP's dastardly, dastardly magic quotes, an awful feature that
// mars an otherwise great language. Site admins might want to disable
// get-magic-quotes-gpc in their php config file or an .htaccess file.
// See http://www.php.net/manual/en/function.get-magic-quotes-gpc.php
// for details.
set_magic_quotes_runtime(0);
// Thanks to hirose@tg.rim.or.jp, who put a variant of this code on
// http://www.php.net/manual/en/function.get-magic-quotes-gpc.php
if (get_magic_quotes_gpc()) {
for (reset($HTTP_POST_VARS); list($k, $v) = each($HTTP_POST_VARS); )
$HTTP_POST_VARS{$k} = stripslashes($v);
}
?>
CSS Descrambler
>3)^$t3)>>1)^$t3)>>8)^$t3)>>5)&0xff;
$t3=($t3<<8)|$t6;
$t6=$CSStab4[$t6];
$t5+=$t6+$t4;
$ret .= chr(($CSStab1[ord($sec{$sec_index})]) ^ ($t5&0xff));
// Hackers-IL: *sec++ =CSStab1[*sec]^(t5&0xff); - This code is awful
$sec_index++;
$t5>>=8;
}
return $ret;
}
// If we've got input data, decrypt it and print it out.
if(isset($HTTP_POST_VARS{'key'}) and isset($HTTP_POST_VARS{'sec'})) {
echo "Decryption results
\n";
echo "You may need to view source to get the most out of these results\n";
echo "Page down for the input form";
echo "\n";
echo "\n";
echo "---BEGIN HTML ENTITY ENCODED DECRYPTED STUFF---";
$decrypted_stuff =
CSSdescramble($HTTP_POST_VARS{'sec'},$HTTP_POST_VARS{'key'});
for($i = 0; $i < 0x800; $i++) {
// Print a newline every 64 chars. It looks better in view source that way.
if(!($i%64)) echo "\n";
echo '&#'.ord($decrypted_stuff{$i}).';';
}
echo "\n---END HTML ENTITY ENCODED DECRYPTED STUFF---\n";
echo "\n";
}
?>
CSS Descrambler in PHP
A transliteration of the
Javascript original by
Tom Stepleton.
v0.1, 6/Jan/2002