Phalcon\Legacy\Crypt::setKey PHP Method

    public function setKey($key)
    {
        $this->key = $key;
        return $this;
    }

 /**
  * Tests the encryption
  *
  * @author Nikolaos Dimopoulos <*****@*****.**>
  * @since  2014-10-17
  */
 public function testCryptEncryption()
 {
     $this->specify("encryption does not return correct results", function ($key, $test) {
         $modes = [MCRYPT_MODE_ECB, MCRYPT_MODE_CBC, MCRYPT_MODE_CFB, MCRYPT_MODE_OFB, MCRYPT_MODE_NOFB];
         $crypt = new Crypt();
         foreach ($modes as $mode) {
             $crypt->setMode($mode);
             $crypt->setKey(substr($key, 0, 16));
             $encryption = $crypt->encrypt($test);
             expect(rtrim($crypt->decrypt($encryption), ""))->equals($test);
             $encryption = $crypt->encrypt($test, substr($key, 0, 16));
             expect(rtrim($crypt->decrypt($encryption, substr($key, 0, 16)), ""))->equals($test);
         }
     }, ['examples' => [[md5(uniqid()), str_repeat('x', mt_rand(1, 255))], [time() . time(), str_shuffle(join('', range('a', 'z')))], ['le$ki12432543543543543', null]]]);
 }