Need to use RNGCryptoServiceProvider in PHP, help!

Hi,

I need to use RNGCryptoServiceProvider in PHP.

I have tried:

Code:

---

$rng = new DOTNET("mscorlib", "System.Security.Cryptography.RNGCryptoServiceProvider");
$arr = array(0);
$v = new VARIANT($arr,VT_ARRAY);
$rng->GetBytes($v);
unset($rng);

---

The component loads fine.

But I got this error: Fatal error: Uncaught exception 'com_exception' with message 'Error [0x80070057] The parameter is incorrect.

Any ideas?