PHP Decode

<?php 
//  If U Want Change Licences Here, From Bubi1 , 2, 3, etc Insert Ur Name  
$Licences = array('ferdibilisim1', 'ferdibilisim2', 'ferdibilisim3', 'ferdibilisim4', 'ferdibilisim5', 'ferdibilisim6'); 
 
function gen_random_string($len, $dict = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789")  
{ 
    $dict_len = strlen($dict); 
    $res = ""; 
    while ($len--)  $res .= $dict[mt_rand(0, $dict_len - 1)]; 
    return $res; 
} 
 
function enc_and_obfuscate($data, $enc_key)  
{ 
    $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB); 
    $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); 
    $enc_data = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $enc_key, $data, MCRYPT_MODE_ECB, $iv); 
    $result = base64_encode($enc_data); 
    $result = str_replace(array("+", "/", "="), array("-", "_", ""), $result); 
    $result = mask_enc_key($result, $enc_key); 
    return trim($result); 
} 
 
 
function enc_and_hash($data, $enc_key)  
{ 
    $data = serialize($data); 
    $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC), MCRYPT_DEV_URANDOM); 
    $enc_key = pack("H*", $enc_key); 
    $sha_hash = hash_hmac("sha256", $data, substr(bin2hex($enc_key), -32)); 
    $encryped_hash = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $enc_key, $data . $sha_hash, MCRYPT_MODE_CBC, $iv); 
    $result = base64_encode($encryped_hash) . "|" . base64_encode($iv); 
    return $result; 
} 
 
function dec_and_hash($data, $enc_key)  
{ 
    $data = explode("|", $data . "|"); 
    $enc_data= base64_decode($data[0]); 
    $iv = base64_decode($data[1]); 
    if (strlen($iv) !== mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC)) { 
        return false; 
    } 
    $enc_key = pack("H*", $enc_key); 
    $result = trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $enc_key, $enc_data, MCRYPT_MODE_CBC, $iv)); 
    $sha_hash_from_result = substr($result, -64); 
    $result = substr($result, 0, -64); 
    $sha_hash = hash_hmac("sha256", $result, substr(bin2hex($enc_key), -32)); 
    if ($sha_hash !== $sha_hash_from_result) { 
        return false; 
    } 
    $result = unserialize($result); 
    return $result; 
} 
 
function decrypt_reply_data($data)  
{ 
    $vars = explode(":", $data); 
    $count_vars = count($vars); 
    $enc_key = ""; 
    for ($i = 1; $i < $count_vars;$i++) {  
        $enc_key .= substr($vars[$i], 0, 1); 
    } 
 
    $data_length = substr($data, 0, 1); 
    $data_length .= substr($data, -1); 
    $data = substr($data, 1); 
    $data = substr($data, 0, -1); 
    preg_match_all("/[0-9a-zA-Z]{".$data_length."}\:./", $data, $preg_result); 
    $data = str_replace($preg_result[0], array(), $data); 
    $base64_data = str_replace(array("-", "_"), array("+", "/"), $data); 
    $base64_data_parity = strlen($base64_data) % 4; 
    if ($base64_data_parity) {  
        $base64_data .= substr("====", $base64_data_parity); 
    } 
 
    $enc_data = base64_decode($base64_data); 
    $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB); 
    $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); 
    $decrypted_result = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $enc_key, $enc_data, MCRYPT_MODE_ECB, $iv); 
    return $decrypted_result; 
 
} 
 
 
function validate_result($data,$check_token,$md5_secret) { 
    $cur_date = date("Ymd"); 
    $data = decrypt_reply_data(dec_and_hash($data, md5("XTREAMCODES_FTW!"))); 
    preg_match_all('/<(.*?)>([^<]+)<\/>/i', $data, $vars); 
    $result = array(); 
    foreach ($vars[1] as $name => $value) { 
        $result[$value] = $vars[2][$name]; 
    } 
    print_r($data); 
 
    if (!is_array($result)) {  
        exit("Invalid License Server Response"); 
    } 
 
    if (empty($result["md5hash"])) {  
        return array("status" => "Invalid"); 
    } 
 
    if ($result["md5hash"] != md5($md5_secret . $check_token))  
    { 
        $result["status"] = "Invalid"; 
        $result["description"] = "MD5 Checksum Verification Failed"; 
        return $result; 
    } 
 
    if ($result["status"] == "Active") {  
        $result["checkdate"] = $cur_date; 
        $localkey = serialize($result); 
        $localkey = base64_encode($localkey); 
        $localkey = md5($cur_date . $md5_secret) . $localkey; 
        $localkey = strrev($localkey); 
        $localkey = $localkey . md5($localkey . $md5_secret); 
        $localkey = wordwrap($localkey, 80, "
", true); 
        $result["localkey"] = $localkey; 
        return $result; 
    } 
} 
 
 
function mask_enc_key($enc_value, $enc_key)  
{ 
    $splitted_value = str_split($enc_key); 
    $rand_len = rand(70, 90); 
    $splitted_rand_len = str_split($rand_len); 
 
    $enc_value = substr_replace($enc_value, $splitted_rand_len[0], 0, 0); 
    $enc_value = substr_replace($enc_value, $splitted_rand_len[1], strlen($enc_value), 0); 
 
    for ($i = 0; $i < count($splitted_value); $i++) { 
        $enc_value = substr_replace($enc_value, "+", rand(2, strlen($enc_value) - 1), 0); 
    } 
    foreach ($splitted_value as $enc_key => $letter ) { 
        $enc_value = preg_replace('/\+/', gen_random_string($rand_len) . ":" . $letter, $enc_value, 1); 
    } 
    return $enc_value; 
 
} 
 
$md5_secret = "96b90f3b34525c54ff21c0caa1f71d19"; 
 
if (!(isset($_POST['licensekey']))) 
{ 
    if (!isset($_POST) || empty($_POST)) return; 
     
    $v = array_shift($_POST); 
    if ($data = decrypt_reply_data(dec_and_hash($v,md5("dAaCZzzzaAsdASDa!##@")))) 
    { 
        parse_str($data,$vars); 
        if (in_array($vars['licensekey'], $Licences)) 
        { 
            if (isset($vars['check_token'])) 
            { 
                $check_token = $vars['check_token']; 
                $md5Hash = md5( $md5_secret. $check_token); 
                $result = '<status>Active</status>' 
                    . '<registeredname></registeredname>
' 
                    . '<companyname></companyname>
' 
                    . '<email></email>
' 
                    . '<serviceid>1</serviceid>
' 
                    . '<productid>1</productid>
' 
                    . '<productname></productname>
' 
                    . '<regdate>2015-02-15</regdate>
' 
                    . '<nextduedate>2050-12-15</nextduedate>
' 
                    . '<billingcycle></billingcycle>
' 
                    . '<validdomain></validdomain>
' 
                    . '<validip></validip>
' 
                    . '<validdirectory></validdirectory>
' 
                    . '<configoptions>Extra Load Balancer Servers=99</configoptions>
' 
                    . '<customfields></customfields>
' 
                    . '<addons>name=CopyRights Removal;nextduedate=0000-00-00;status=Active|name=Detect Reshares with No permissions;nextduedate=2015-04-15;status=Active</addons>
' 
                    . '<md5hash>'.$md5Hash.'</md5hash>'; 
 
                $result = enc_and_hash(enc_and_obfuscate($result,gen_random_string(32)),md5("XTREAMCODES_FTW!")); 
                 
                echo $result; 
            } 
        } 
    } 
} 
else 
{ 
    if (in_array($_POST['licensekey'], $Licences)) 
    { 
        $md5Hash = (isset( $_POST["check_token"] ) ? md5( $md5_secret . $_POST["check_token"] ) : ""); 
        $result = '<status>Active</status>' 
        . '<registeredname></registeredname>
' 
        . '<companyname></companyname>
' 
        . '<email></email>
' 
        . '<serviceid>1</serviceid>
' 
        . '<productid>1</productid>
' 
        . '<productname></productname>
' 
        . '<regdate>2015-02-15</regdate>
' 
        . '<nextduedate>2050-12-15</nextduedate>
' 
        . '<billingcycle></billingcycle>
' 
        . '<validdomain></validdomain>
' 
        . '<validip></validip>
' 
        . '<validdirectory></validdirectory>
' 
        . '<configoptions>Extra Load Balancer Servers=99</configoptions>
' 
        . '<customfields></customfields>
' 
        . '<addons>name=CopyRights Removal;nextduedate=0000-00-00;status=Active|name=Detect Reshares with No permissions;nextduedate=2015-04-15;status=Active</addons>
' 
        . '<md5hash>'.$md5Hash.'</md5hash>'; 
 
        echo $result; 
    } 
} 
 ?>