How to use 'defuse/php-encryption'?

Question

I've dowloaded 'defuse/php-encryption' from GitHub.

I tried the exemple founded here : How do you Encrypt and Decrypt a PHP String? but I didn't succeed.

"test.php" is in the same folder with "Crypto.php" :

<?php
// This requires https://github.com/defuse/php-encryption
// php composer.phar require defuse/php-encryption
// Note: Crypto::Encrypt() returns raw binary, so you may want to use base64_encode() and base64_decode()for storing/transmitting ciphertexts to prevent encoding bugs.
ini_set('display_errors', 1); error_reporting(E_ALL);

require ("Crypto.php");

// Do this once then store it somehow:
$key = Crypto::CreateNewRandomKey();

$message = 'We are all living in a yellow submarine';

$ciphertext = Crypto::Encrypt($message, $key);
$plaintext = Crypto::Decrypt($ciphertext, $key);


if ($ciphertext === $plaintext)
 {echo "<br><font color=green>Operation cryp - décrypt OK !!!!</font><br><br><br>$ciphertext === $plaintext<br><br>";}
else
 {echo "<br><font color=red>Operation cryp - décrypt NOK !!!!</font><br><br>$ciphertext === $plaintext<br><br>";}

?>

The result is :

Fatal error: Class 'Crypto' not found in /home/zideesdubj/www/_tests2enfants/_test_session/php-encryption-master/php-encryption-master/src/test.php on line 10

With your help, I replaced "require ("Crypto.php");" by "require('php-encryption-master/autoload.php'); But it's the same result :

Fatal error: Class 'Crypto' not found in /home/zideesdubj/www/_tests2enfants/_test_session/php-encryption-master/test.php on line 10

Have you got any basic example to use 'defuse/php-encryption' ?

I understand this is a question from a dummy but I don't find any answer or tutorial on the web.

Thanks !

Answer 1

The class Crypto is namespaced. Have you tried adding

use \Defuse\Crypto\Crypto;

at the start of your php script to use the correct namespace?

Answer 2

$ciphertext will never be === to $plaintext, just a heads up.

To get the right namespace, I had to use:

$key = \Defuse\Crypto\Crypto::CreateNewRandomKey();
$message = 'We are all living in a yellow submarine';
$ciphertext = \Defuse\Crypto\Crypto::Encrypt($message, $key);
$plaintext = \Defuse\Crypto\Crypto::Decrypt($ciphertext, $key);

Answer 3

I literally had the same problem and just fixed it.

If you download "defuse-crypto.phar" from the GitHub repository ( https://github.com/defuse/php-encryption/releases ), then use

require_once("defuse-crypto.phar");

then use

use Defuse\Crypto\whichever_one_you_want_to_load

This works, and I have been trying to get this working for quite some time as well. It's a late answer but anyone who tries this, it does work.

You are probably not supposed to do it this way, but if I find a better way that you are supposed to do then I will edit this answer.

Answer 4

The SO question referenced by the asker was apparently written against an older version of the package prior to its integration with Composer. [The referenced answer has since been rewritten]

Replace:

require ("Crypto.php");

With:

require('vendor/autoload.php');

And remember, take SO answers with a grain of salt. Just because the answer is accepted doesn't necessarily mean it's either correct or current.