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<?php |
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/** |
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* Spiral Framework. |
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* |
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* @license MIT |
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* @author Anton Titov (Wolfy-J) |
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*/ |
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namespace Spiral\Encrypter; |
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use Spiral\Core\Container\InjectableInterface; |
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use Spiral\Encrypter\Exceptions\DecryptException; |
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use Spiral\Encrypter\Exceptions\EncrypterException; |
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use Spiral\Encrypter\Exceptions\EncryptException; |
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/** |
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* Default implementation of spiral encrypter. Sugary implementation at top of defuse/php-encryption |
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* |
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* @see https://github.com/defuse/php-encryption |
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*/ |
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class Encrypter implements EncrypterInterface, InjectableInterface |
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{ |
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/** |
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* Injection is dedicated to outer class since Encrypter is pretty simple. |
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*/ |
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const INJECTOR = EncrypterManager::class; |
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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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* Encrypter constructor. |
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* |
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* @param string $key |
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*/ |
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public function __construct($key) |
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{ |
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$this->key = $key; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function withKey($key) |
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{ |
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$encrypter = clone $this; |
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$encrypter->key = (string)$key; |
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return $encrypter; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getKey() |
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{ |
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return $this->key; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @todo double check |
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* @param bool $passWeak Do not throw an exception if result is "weak". Not recommended. |
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*/ |
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public function random($length, $passWeak = false) |
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{ |
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if ($length < 1) { |
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throw new EncrypterException("Random string length should be at least 1 byte long."); |
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} |
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$result = openssl_random_pseudo_bytes($length, $cryptoStrong); |
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if ($result === false) { |
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throw new EncrypterException( |
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"Unable to generate pseudo-random string with {$length} length." |
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); |
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} |
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if (!$passWeak && !(bool)$cryptoStrong) { |
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throw new EncrypterException("Weak random result received."); |
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} |
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return $result; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* Data encoded using json_encode method, only supported formats are allowed! |
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*/ |
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public function encrypt($data) |
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{ |
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$packed = json_encode($data); |
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try { |
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return \Crypto::Encrypt($packed, $this->key); |
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} catch (\CannotPerformOperationException $e) { |
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throw new EncryptException($e->getMessage(), $e->getCode(), $e); |
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} catch (\CryptoTestFailedException $e) { |
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throw new EncrypterException($e->getMessage(), $e->getCode(), $e); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* json_decode with assoc flag set to true |
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*/ |
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public function decrypt($payload) |
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{ |
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try { |
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$result = \Crypto::Decrypt($payload, $this->key); |
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return json_decode($result, true); |
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} catch (\InvalidCiphertextException $e) { |
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throw new DecryptException($e->getMessage(), $e->getCode(), $e); |
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} catch (\CannotPerformOperationException $e) { |
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throw new DecryptException($e->getMessage(), $e->getCode(), $e); |
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} catch (\CryptoTestFailedException $e) { |
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throw new EncrypterException($e->getMessage(), $e->getCode(), $e); |
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} |
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} |
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} |
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spiral /
components
