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<?php |
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namespace Jsq\Cache; |
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use Doctrine\Common\Cache\Cache; |
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abstract class EncryptingDecorator implements Cache |
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{ |
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use EncryptionStatsTrait; |
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/** @var Cache */ |
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protected $decorated; |
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/** |
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177 |
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* @param Cache $decorated |
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*/ |
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public function __construct(Cache $decorated) |
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177 |
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{ |
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$this->decorated = $decorated; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function fetch($id) |
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{ |
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$stored = $this->decorated->fetch($id); |
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if ($this->isDataDecryptable($stored, $id)) { |
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return $this->returnHit( |
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$this->callAndTime([$this, 'decrypt'], [$stored]) |
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); |
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} |
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return $this->returnMiss(false); |
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} |
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72 |
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/** |
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* {@inheritdoc} |
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*/ |
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public function save($id, $data, $ttl = 0) |
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{ |
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return $this->decorated->save( |
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$id, |
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$this->callAndTime([$this, 'encrypt'], [$data, $id]), |
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$ttl |
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); |
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} |
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36 |
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/** |
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* {@inheritdoc} |
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6 |
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*/ |
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public function contains($id) |
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{ |
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if ($stored = $this->decorated->fetch($id)) { |
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return $this->isDataDecryptable($stored, $id); |
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} |
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6 |
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return false; |
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} |
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6 |
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3 |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getStats() |
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{ |
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return $this->getEncryptionStats($this->decorated->getStats() ?: []); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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36 |
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public function delete($id) |
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{ |
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return $this->decorated |
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->delete($id); |
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} |
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protected function hmac(string $encrypted, string $id): string |
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{ |
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return hash_hmac('sha256', $encrypted, $id); |
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} |
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protected function generateIv(string $method): string |
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{ |
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return random_bytes(openssl_cipher_iv_length($method)); |
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} |
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72 |
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protected function encipher( |
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string $string, |
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75 |
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string $method, |
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string $key, |
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string $iv |
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): string { |
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return openssl_encrypt($string, $method, $key, 0, $iv); |
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36 |
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} |
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36 |
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protected function decipher( |
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string $string, |
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string $method, |
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string $key, |
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string $iv |
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): string { |
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return openssl_decrypt($string, $method, $key, 0, $iv); |
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} |
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abstract protected function encrypt($data, string $id): EncryptedValue; |
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abstract protected function decrypt($data); |
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109
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abstract protected function isDataDecryptable($data, string $id): bool; |
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} |
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jeskew /
doctrine-cache-encrypter
