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Use OpenSSL instead of Mcrypt in the examples #7934

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Use OpenSSL instead of Mcrypt in the examples #7934

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d5be25c
Use OpenSSL instead of Mcrypt in the examples
javiereguiluz May 21, 2017
452d064
Updated the example to use php-encryption library
javiereguiluz Jul 9, 2017
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15 changes: 10 additions & 5 deletions session/proxy_examples.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -87,19 +87,22 @@ guest sessions.
Encryption of Session Data
--------------------------

If you wanted to encrypt the session data, you could use the proxy to encrypt
and decrypt the session as required::
If you want to encrypt the session data, you can use the proxy to encrypt and
decrypt the session as required. The following example uses the `php-encryption`_
library, but you can adapt it to any other library that you may be using::

// src/AppBundle/Session/EncryptedSessionProxy.php
namespace AppBundle\Session;

use Defuse\Crypto\Crypto;
use Defuse\Crypto\Key;
use Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy;

class EncryptedSessionProxy extends SessionHandlerProxy
{
private $key;

public function __construct(\SessionHandlerInterface $handler, $key)
public function __construct(\SessionHandlerInterface $handler, Key $key)
{
$this->key = $key;

Expand All @@ -110,12 +113,12 @@ and decrypt the session as required::
{
$data = parent::read($id);

return mcrypt_decrypt(\MCRYPT_3DES, $this->key, $data);
return Crypto::decrypt($data, $this->key);
}

public function write($id, $data)
{
$data = mcrypt_encrypt(\MCRYPT_3DES, $this->key, $data);
$data = Crypto::encrypt($data, $this->key);

return parent::write($id, $data);
}
Expand Down Expand Up @@ -154,3 +157,5 @@ can intercept the session before it is written::
return parent::write($id, $data);
}
}

.. _`php-encryption`: https://github.com/defuse/php-encryption