Файл: sys/inc/shif.php
Строк: 70
<?
function shif($str)
{
global $set;
$key=$set['shif'];
$str1=md5((string)$str);
$str2=md5($key);
return md5($key.$str1.$str2.$key);
}
/*
*
* From Dcms-Social Next by ua0sqq
*/
function cookie_encrypt($str,$id=0)
{
if (function_exists('mcrypt_module_open') )
{
$td = mcrypt_module_open ('rijndael-256', '', 'ofb', '');
if (!$iv = @file_get_contents(H.'sys/dat/shif_iv.dat'))
{
$iv=base64_encode( mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_DEV_RANDOM));
file_put_contents(H.'sys/dat/shif_iv.dat', $iv);
chmod(H.'sys/dat/shif_iv.dat', 0777);
}
$ks = @mcrypt_enc_get_key_size ($td);
/* Создать ключ */
$key = substr (md5 ($id.@$_SERVER['HTTP_USER_AGENT']), 0, $ks);
@mcrypt_generic_init ($td, $key, base64_decode($iv));
$str = @mcrypt_generic ($td, $str);
@mcrypt_generic_deinit ($td);
@mcrypt_module_close ($td);
}
else
{
$ks = openssl_cipher_iv_length($method = 'AES-256-CBC');
$key = substr(md5($id.@$_SERVER['HTTP_USER_AGENT']), 0, $ks);
if (!$iv = @file_get_contents(H . 'sys/dat/shif_iv.dat')) {
$iv = openssl_random_pseudo_bytes($ks);
file_put_contents(H . 'sys/dat/shif_iv.dat', base64_encode($iv));
chmod(H . 'sys/dat/shif_iv.dat', 0644);
}
$str = openssl_encrypt($str, $method, $key, $options=OPENSSL_RAW_DATA, base64_decode($iv));
}
$str = base64_encode($str);
return $str;
}
function cookie_decrypt($str,$id=0)
{
$str=base64_decode($str);
if (function_exists('mcrypt_module_open'))
{
$td = mcrypt_module_open ('rijndael-256', '', 'ofb', '');
if (!$iv = @file_get_contents(H.'sys/dat/shif_iv.dat'))
{
$iv = base64_encode( mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_DEV_RANDOM));
file_put_contents(H.'sys/dat/shif_iv.dat', $iv);
chmod(H.'sys/dat/shif_iv.dat', 0777);
}
$ks = @mcrypt_enc_get_key_size ($td);
/* Создать ключ */
$key = substr (md5 ($id.@$_SERVER['HTTP_USER_AGENT']), 0, $ks);
@mcrypt_generic_init ($td, $key, base64_decode($iv));
$str = @mdecrypt_generic ($td, $str);
@mcrypt_generic_deinit ($td);
@mcrypt_module_close ($td);
}
else
{
$ks = openssl_cipher_iv_length($method = 'AES-256-CBC');
$key = substr(md5($id.@$_SERVER['HTTP_USER_AGENT']), 0, $ks);
if (!$iv = file_get_contents(H . 'sys/dat/shif_iv.dat')) {
$iv = openssl_random_pseudo_bytes($ks);
file_put_contents(H . 'sys/dat/shif_iv.dat', base64_encode($iv));
chmod(H . 'sys/dat/shif_iv.dat', 0644);
}
$str = openssl_decrypt($str, $method, $key, $options=OPENSSL_RAW_DATA, base64_decode($iv));
}
return $str;
}