Crypt.au3 problems?

Hi, guys.

I'm testing the example from the documentation for the function _Crypt_EncryptData() and it gives an example that convert the string to RC4 with the password "CryptPassword".

Converting the string "foo" with this example to RC4, default password "CryptPassword", I had "0x9132C9". But when using this site, the same password and algorithm, i had the result "0xD491B8".

My question: What does the Crypt.au3 lib really does after encoding the string? Just convert it to hexadecimal or there's something additional? Is it possible to make the lib convert to Base64? Why, exactly, the result wasn't the same?

Thanks.