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<?php |
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/** |
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* Class CryptoBoxAbstract |
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* |
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* @filesource CryptoBoxAbstract.php |
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* @created 25.01.2018 |
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* @package chillerlan\Cryptobox |
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* @author Smiley <[email protected]> |
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* @copyright 2018 Smiley |
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* @license MIT |
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*/ |
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namespace chillerlan\Cryptobox; |
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use function property_exists, strlen, trim; |
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/** |
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* @link https://paragonie.com/book/pecl-libsodium/read/00-intro.md |
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* @link https://paragonie.com/book/pecl-libsodium/read/01-quick-start.md |
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*/ |
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abstract class CryptoBoxAbstract implements CryptoBoxInterface{ |
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/** |
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* @var \chillerlan\Cryptobox\CryptoKeypairInterface |
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*/ |
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protected $keypair; |
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/** |
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* @var string |
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*/ |
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protected $box; |
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/** |
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* @var string |
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*/ |
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protected $nonce; |
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/** |
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* @var string |
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*/ |
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protected $message; |
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/** |
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* CryptoBoxAbstract constructor. |
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* |
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* @param \chillerlan\Cryptobox\CryptoKeypairInterface|null $keypair |
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*/ |
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public function __construct(CryptoKeypairInterface $keypair = null){ |
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$this->keypair = $keypair; |
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} |
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/** |
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* @param string $property |
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* |
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* @return mixed|null |
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*/ |
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public function __get(string $property){ |
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return property_exists($this, $property) ? $this->{$property} : null; |
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} |
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/** |
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* @param int $secretLength |
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* @param int $publicLength |
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* |
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* @return void |
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* @throws \chillerlan\Cryptobox\CryptoException |
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*/ |
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protected function checkKeypair(int $secretLength = null, int $publicLength = null):void{ |
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if($secretLength !== null && (!$this->keypair->secret || strlen($this->keypair->secret) !== $secretLength)){ |
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throw new CryptoException('invalid secret key'); |
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} |
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if($publicLength !== null && (!$this->keypair->public || strlen($this->keypair->public) !== $publicLength)){ |
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throw new CryptoException('invalid public key'); |
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} |
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} |
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/** |
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* @param string $message |
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* |
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* @return string |
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* @throws \chillerlan\Cryptobox\CryptoException |
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*/ |
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protected function checkMessage(string $message):string{ |
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$message = trim($message); |
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if(empty($message)){ |
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throw new CryptoException('invalid message'); |
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} |
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// @todo: padding? |
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return $message; |
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} |
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} |
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chillerlan /
php-cryptobox
