$result = trim(mdecrypt_generic($mcrypt, $data)); 这是62行代码
return gzuncompress($result); 这是67行代码
我下载的版本：3-1-9-0612-patches.zip
下面是这个页面的全部代码：
<?php
/*
+--------------------------------------------------------------------------
| WeCenter [#RELEASE_VERSION#]
| ========================================
| by WeCenter Software
| © 2011 - 2014 WeCenter. All Rights Reserved
| http://www.wecenter.com
| ========================================
| Support: WeCenter@qq.com
|
+---------------------------------------------------------------------------
*/
class core_crypt
{
public function __construct()
{
if (!function_exists('mcrypt_module_open'))
{
exit('Error: Mcrypt Module not support');
}
}
public function encode($data, $key = null)
{
$mcrypt = mcrypt_module_open($this->get_algorithms(), '', MCRYPT_MODE_ECB, '');
mcrypt_generic_init($mcrypt, $this->get_key($mcrypt, $key), mcrypt_create_iv(mcrypt_enc_get_iv_size($mcrypt), MCRYPT_RAND));
$result = mcrypt_generic($mcrypt, gzcompress($data));
mcrypt_generic_deinit($mcrypt);
mcrypt_module_close($mcrypt);
return $this->get_algorithms() . '|' . $this->str_to_hex($result);
}
public function decode($data, $key = null)
{
if (strstr($data, '|'))
{
$decode_data = explode('|', $data);
$algorithm = $decode_data[0];
$data = str_replace($algorithm . '|', '', $data);
$data = $this->hex_to_str($data);
}
else
{
$algorithm = $this->get_algorithms();
$data = base64_decode($data);
}
$mcrypt = mcrypt_module_open($algorithm, '', MCRYPT_MODE_ECB, '');
mcrypt_generic_init($mcrypt, $this->get_key($mcrypt, $key), mcrypt_create_iv(mcrypt_enc_get_iv_size($mcrypt), MCRYPT_RAND));
$result = trim(mdecrypt_generic($mcrypt, $data));
mcrypt_generic_deinit($mcrypt);
mcrypt_module_close($mcrypt);
return gzuncompress($result);
}
private function get_key($mcrypt, $key = null)
{
if (!$key)
{
$key = G_COOKIE_HASH_KEY;
}
return substr($key, 0, mcrypt_enc_get_key_size($mcrypt));
}
private function get_algorithms()
{
$algorithms = mcrypt_list_algorithms();
foreach ($algorithms AS $algorithm)
{
if (strstr($algorithm, '-256'))
{
return $algorithm;
}
}
foreach ($algorithms AS $algorithm)
{
if (strstr($algorithm, '-128'))
{
return $algorithm;
}
}
return end($algorithms);
}
private function str_to_hex($string)
{
for ($i = 0; $i < strlen($string); $i++)
{
$ord = ord($string[$i]);
$hexCode = dechex($ord);
$hex .= substr('0' . $hexCode, -2);
}
return strtoupper($hex);
}
private function hex_to_str($hex)
{
for ($i = 0; $i < strlen($hex)-1; $i += 2)
{
$string .= chr(hexdec($hex[$i] . $hex[$i + 1]));
}
return $string;
}
}
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