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<?php |
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declare(strict_types=1); |
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/** |
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* OpensslStack.php. |
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* |
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* PHP version 7 |
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* |
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* @category Dcrypt |
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* |
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* @author Michael Meyer (mmeyer2k) <[email protected]> |
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* @license http://opensource.org/licenses/MIT The MIT License (MIT) |
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* |
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* @link https://github.com/mmeyer2k/dcrypt |
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*/ |
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namespace Dcrypt; |
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/** |
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* A factory class to build and use custom encryption stacks. |
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* |
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* @category Dcrypt |
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* |
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* @author Michael Meyer (mmeyer2k) <[email protected]> |
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* @license http://opensource.org/licenses/MIT The MIT License (MIT) |
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* |
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* @link https://github.com/mmeyer2k/dcrypt |
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*/ |
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class OpensslStack |
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{ |
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/** |
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* Stack of cipher/algo combos. |
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* |
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* @var array |
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*/ |
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private $_stack = []; |
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/** |
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* High entropy key. |
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* |
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* @var string |
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*/ |
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private $_key; |
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/** |
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* OpensslStack constructor. |
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* |
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* @param string $key Password or key |
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*/ |
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public function __construct(string $key) |
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{ |
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$this->_key = $key; |
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} |
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/** |
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* Add a new cipher/algo combo to the execution stack. |
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* |
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* @param string $cipher Cipher mode to use |
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* @param string $algo Hashing algo to use |
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* |
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* @return OpensslStack |
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*/ |
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public function add(string $cipher, string $algo): self |
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{ |
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$this->_stack[] = [$cipher, $algo]; |
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return $this; |
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} |
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/** |
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* Encrypt data using custom stack. |
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* |
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* @param string $data Data to encrypt |
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* |
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* @return string |
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*/ |
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public function encrypt(string $data): string |
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{ |
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foreach ($this->_stack as $s) { |
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$data = OpensslStatic::encrypt($data, $this->_key, $s[0], $s[1]); |
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} |
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return $data; |
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} |
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/** |
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* Decrypt data using custom stack. |
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* |
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* @param string $data Data to decrypt |
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* |
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* @return string |
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*/ |
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public function decrypt(string $data): string |
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{ |
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foreach (\array_reverse($this->_stack) as $s) { |
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$data = OpensslStatic::decrypt($data, $this->_key, $s[0], $s[1]); |
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} |
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return $data; |
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} |
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} |
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mmeyer2k /
dcrypt
