Call to undefined function Illuminate\Encryption\openssl_cipher_iv_length()

1. *@paramstring $cipher
2. *@returnstring
3. */
4. public static function generateKey($cipher)
5. {
6. return random_bytes($cipher == 'AES-128-CBC' ? 16 : 32);
7. }
8. /**
9. *Encrypt the given value.
10. *
11. *@param mixed $value
12. *@parambool $serialize
13. *@returnstring
14. *
15. *@throws \Illuminate\Contracts\Encryption\EncryptException
16. */
17. public function encrypt($value, $serialize = true)
18. {
19. $iv = random_bytes(openssl_cipher_iv_length($this->cipher));
20. //First we will encrypt the value usingOpenSSL.Afterthisis encrypted we
21. // will proceed to calculating a MAC for the encrypted value so that this
22. // value can be verified later as not having been changed by the users.
23. $value = \openssl_encrypt(
24. $serialize ? serialize($value): $value,
25. $this->cipher, $this->key,0, $iv
26. );
27. if($value ===false){
28. thrownewEncryptException('Could not encrypt the data.');
29. }
30. // Once we get the encrypted value we'll go ahead and base64_encode the input
31. // vector and create the MAC for the encrypted value so we can then verify
32. // its authenticity. Then, we'll JSON the data into the "payload" array.
33. $mac = $this->hash($iv = base64_encode($iv), $value);
34. $json = json_encode(compact('iv','value','mac'));