src/Twig/CryptExtension.php line 35

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  1. <?php
  4. namespace App\Twig;
  6. use Twig\Extension\AbstractExtension;
  7. use Twig\TwigFilter;
  9. class CryptExtension extends AbstractExtension
  10. {
  11. private $encryptionKey = "2bfe6c40";
  12. private $encryptionMethod = 'AES-128-CBC';
  14. public function __construct()
  15. {
  17. }
  19. public function getFilters(): array
  20. {
  21. return [
  22. new TwigFilter('encrypt', [$this, 'encryptValue']),
  23. new TwigFilter('decrypt', [$this, 'decryptValue']),
  24. ];
  25. }
  27. public function encryptValue(string $value): string
  28. {
  29. $iv = openssl_random_pseudo_bytes(openssl_cipher_iv_length($this->encryptionMethod));
  30. $encrypted = openssl_encrypt($value, $this->encryptionMethod, $this->encryptionKey, 0, $iv);
  32. return base64_encode($iv . $encrypted);
  33. }
  35. public function decryptValue(string $encryptedValue): string
  36. {
  37. $data = base64_decode($encryptedValue);
  38. $ivLength = openssl_cipher_iv_length($this->encryptionMethod);
  39. $iv = substr($data, 0, $ivLength);
  40. $encryptedData = substr($data, $ivLength);
  42. return openssl_decrypt($encryptedData, $this->encryptionMethod, $this->encryptionKey, 0, $iv);
  43. }
  44. }