AlexanderWingard

make_qry(Chl) ->
    %% First we compose two strings:
    %% ChlKey = Challenge + Client-Key
    %% ChlPid = Challenge + Client-Id zero padded to even 8
    Key     = "CFHUR$52U_{VIX5T",
    Pid     = "PROD0101{0RM?UBW",
    ChlKey  = Chl ++ Key,
    ChlPid0 = Chl ++ Pid,
    ChlPadL = 8 - (length(ChlPid0) rem 8),
    ChlPid1 = ChlPid0 ++ lists:duplicate(ChlPadL, $0),