%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* @package Joomla.Platform
* @subpackage Crypt
*
* @copyright Copyright (C) 2005 - 2016 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* JCrypt cipher for encryption, decryption and key generation via the php-encryption library.
*
* @since 3.5
*/
class JCryptCipherCrypto implements JCryptCipher
{
/**
* Method to decrypt a data string.
*
* @param string $data The encrypted string to decrypt.
* @param JCryptKey $key The key object to use for decryption.
*
* @return string The decrypted data string.
*
* @since 3.5
* @throws RuntimeException
*/
public function decrypt($data, JCryptKey $key)
{
// Validate key.
if ($key->type != 'crypto')
{
throw new InvalidArgumentException('Invalid key of type: ' . $key->type . '. Expected crypto.');
}
// Decrypt the data.
try
{
return Crypto::Decrypt($data, $key->public);
}
catch (InvalidCiphertextException $ex)
{
throw new RuntimeException('DANGER! DANGER! The ciphertext has been tampered with!', $ex->getCode(), $ex);
}
catch (CryptoTestFailedException $ex)
{
throw new RuntimeException('Cannot safely perform decryption', $ex->getCode(), $ex);
}
catch (CannotPerformOperationException $ex)
{
throw new RuntimeException('Cannot safely perform decryption', $ex->getCode(), $ex);
}
}
/**
* Method to encrypt a data string.
*
* @param string $data The data string to encrypt.
* @param JCryptKey $key The key object to use for encryption.
*
* @return string The encrypted data string.
*
* @since 3.5
* @throws RuntimeException
*/
public function encrypt($data, JCryptKey $key)
{
// Validate key.
if ($key->type != 'crypto')
{
throw new InvalidArgumentException('Invalid key of type: ' . $key->type . '. Expected crypto.');
}
// Encrypt the data.
try
{
return Crypto::Encrypt($data, $key->public);
}
catch (CryptoTestFailedException $ex)
{
throw new RuntimeException('Cannot safely perform encryption', $ex->getCode(), $ex);
}
catch (CannotPerformOperationException $ex)
{
throw new RuntimeException('Cannot safely perform encryption', $ex->getCode(), $ex);
}
}
/**
* Method to generate a new encryption key object.
*
* @param array $options Key generation options.
*
* @return JCryptKey
*
* @since 3.5
* @throws RuntimeException
*/
public function generateKey(array $options = array())
{
// Create the new encryption key object.
$key = new JCryptKey('crypto');
// Generate the encryption key.
try
{
$key->public = Crypto::CreateNewRandomKey();
}
catch (CryptoTestFailedException $ex)
{
throw new RuntimeException('Cannot safely create a key', $ex->getCode(), $ex);
}
catch (CannotPerformOperationException $ex)
{
throw new RuntimeException('Cannot safely create a key', $ex->getCode(), $ex);
}
// Explicitly flag the private as unused in this cipher.
$key->private = 'unused';
return $key;
}
}
Zerion Mini Shell 1.0