/**
* Get encryption singleton thing
*
* Not using core/cryption because it auto-base64 encodes stuff which we
* don't want in this case
*
* @return Mage_Core_Model_Encryption
*/
protected function _getCrypt()
{
if (is_null($this->_crypt)) {
$this->_crypt = Varien_Crypt::factory()->init($this->_getCryptKey());
}
return $this->_crypt;
}
/**
* Instantiate crypt model
*
* @param string $key
* @return Varien_Crypt_Mcrypt
*/
protected function _getCrypt($key = null)
{
if (!$this->_crypt) {
if (null === $key) {
$key = (string) Mage::getConfig()->getNode('global/crypt/key');
}
$this->_crypt = Varien_Crypt::factory()->init($key);
}
return $this->_crypt;
}
/**
* Initialize crypt module if needed
*
* By default initializes with latest key and crypt versions
*
* @param string $key
* @return Varien_Crypt_Mcrypt
*/
protected function _getCrypt($key = null, $cipherVersion = null)
{
if (null === $key && null == $cipherVersion) {
$cipherVersion = self::CIPHER_RIJNDAEL_256;
}
if (null === $key) {
$key = $this->_keys[$this->_keyVersion];
}
if (null === $cipherVersion) {
$cipherVersion = $this->_cipher;
}
$cipherVersion = $this->validateCipher($cipherVersion);
$this->_crypts[$key][$cipherVersion] = Varien_Crypt::factory();
$this->_crypts[$key][$cipherVersion]->setMode(MCRYPT_MODE_ECB);
$this->_crypts[$key][$cipherVersion]->setCipher(MCRYPT_BLOWFISH);
if ($cipherVersion === self::CIPHER_RIJNDAEL_128) {
$this->_crypts[$key][$cipherVersion]->setCipher(MCRYPT_RIJNDAEL_128);
} elseif ($cipherVersion === self::CIPHER_RIJNDAEL_256) {
$this->_crypts[$key][$cipherVersion]->setCipher(MCRYPT_RIJNDAEL_128);
$this->_crypts[$key][$cipherVersion]->setMode(MCRYPT_MODE_CBC);
$this->_crypts[$key][$cipherVersion]->setInitVector($this->_iv);
}
$this->_crypts[$key][$cipherVersion]->init($key);
return $this->_crypts[$key][$cipherVersion];
}