Decrypting laravel_session cookie

[bigstone1990]

I have a question regarding the laravel_session cookie, as I wasn't sure about something.

By default, the laravel_session cookie is generated, but I wanted to investigate what data it contains, so I tried to decrypt it. Here are the steps I followed:

$originalCookieValue = '{laravel_session cookie value}'; 
$laravelSessionDecoded = base64_decode($originalCookieValue);
$json = json_decode($laravelSessionDecoded);
$ivDecoded = base64_decode($json->iv);
$keyDecoded = base64_decode(substr(config('app.key'), 7));
$valueDecrypted = openssl_decrypt($json->value, 'aes-256-cbc', $keyDecoded, 0, $ivDecoded);
dd($valueDecrypted);

The result of dd() provided me with data containing a pipe (|) separator. I discovered that the part after the pipe represents the session ID, but I couldn’t determine what data is represented before the pipe.

If anyone knows, could you please let me know?