I think you could just use any text strings or alphanumerical strings to generate your very own unique key.
Seeyabye Reviewed by Seeyabye on . [Official] WARNING: For Public Rapidleech Servers. Read Special Security Updates WARNING: For Public Rapidleech Servers. Special Security Updates Bug found due to the insert_location() function (download system) which reveals premium cookies and base_64 encoded auth-strings to end user(s). The premium accounts of rapidleech servers providing premium-account downloads to public, are in danger of having their premium accounts compromised! Private rapidleech servers are safe for now, but are strongly encouraged to upgrade. Standard auth system for premium accounts Rating: 5