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@MegaBedder
Created Jul 10, 2017
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CNL2 Decryption [AES][BASE16][PHP]
<?php
/**
Aes encryption
*/
class AES {
const M_CBC = 'cbc';
const M_CFB = 'cfb';
const M_ECB = 'ecb';
const M_NOFB = 'nofb';
const M_OFB = 'ofb';
const M_STREAM = 'stream';
protected $key;
protected $cipher;
protected $data;
protected $mode;
protected $IV;
/**
*
* @param type $data
* @param type $key
* @param type $blockSize
* @param type $mode
*/
function __construct($data = null, $key = null, $blockSize = null, $mode = null) {
$this->setData($data);
$this->setKey($key);
$this->setBlockSize($blockSize);
$this->setMode($mode);
$this->setIV("");
}
/**
*
* @param type $data
*/
public function setData($data) {
$this->data = $data;
}
/**
*
* @param type $key
*/
public function setKey($key) {
$this->key = $key;
}
/**
*
* @param type $blockSize
*/
public function setBlockSize($blockSize) {
switch ($blockSize) {
case 128:
$this->cipher = MCRYPT_RIJNDAEL_128;
break;
case 192:
$this->cipher = MCRYPT_RIJNDAEL_192;
break;
case 256:
$this->cipher = MCRYPT_RIJNDAEL_256;
break;
}
}
/**
*
* @param type $mode
*/
public function setMode($mode) {
switch ($mode) {
case AES::M_CBC:
$this->mode = MCRYPT_MODE_CBC;
break;
case AES::M_CFB:
$this->mode = MCRYPT_MODE_CFB;
break;
case AES::M_ECB:
$this->mode = MCRYPT_MODE_ECB;
break;
case AES::M_NOFB:
$this->mode = MCRYPT_MODE_NOFB;
break;
case AES::M_OFB:
$this->mode = MCRYPT_MODE_OFB;
break;
case AES::M_STREAM:
$this->mode = MCRYPT_MODE_STREAM;
break;
default:
$this->mode = MCRYPT_MODE_ECB;
break;
}
}
/**
*
* @return boolean
*/
public function validateParams() {
if ($this->data != null &&
$this->key != null &&
$this->cipher != null) {
return true;
} else {
return FALSE;
}
}
public function setIV($IV) {
$this->IV = $IV;
}
protected function getIV() {
if ($this->IV == "") {
$this->IV = mcrypt_create_iv(mcrypt_get_iv_size($this->cipher, $this->mode), MCRYPT_RAND);
}
return $this->IV;
}
/**
* @return type
* @throws Exception
*/
public function encrypt() {
if ($this->validateParams()) {
return trim(base64_encode(
mcrypt_encrypt(
$this->cipher, $this->key, $this->data, $this->mode, $this->getIV())));
} else {
throw new Exception('Invlid params!');
}
}
/**
*
* @return type
* @throws Exception
*/
public function decrypt() {
if ($this->validateParams()) {
return trim(mcrypt_decrypt(
$this->cipher, $this->key, base64_decode($this->data), $this->mode, $this->getIV()));
} else {
throw new Exception('Invlid params!');
}
}
}
function base16_encode($text)
{
return bin2hex($text);
}
function base16_decode($base16){
return pack("H*", $base16);
}
// http://jdownloader.org/knowledge/wiki/glossary/cnl2
$jkey="{BASE16_KEY}";
$links="{AES_crypted}";
$aes = new AES($links, base16_decode($jkey), 128, AES::M_CBC);
$dec = $aes->decrypt();
echo "Decryption:\r\n" . $dec;
@MegaBedder
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MegaBedder commented Aug 11, 2017

Work in PHP 5.4.0 & 5.5.34

No work in PHP 5.5.35 or in PHP7
Fatal error: Call to undefined function mcrypt_decrypt() on line 145

This function has been DEPRECATED as of PHP 7.1.0 and REMOVED as of PHP 7.2.0.

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