C# library that can generate CSGO friend codes from Steam64IDs & generate Steam64IDs from CSGO friend codes.
// Should be SUCVS-FADA
string friendCode = FriendCode.Encode(76561197960287930UL);
// Should be 76561197960287930UL
ulong steam64Id = FriendCode.Decode("SUCVS-FADA");