re s s in article r ue access digex net steve b access digex com writes the only theory that makes any sense is that s and s are either the same for all chips or vary among very few possibilities so that anyone trying to break the encryption by brute force need only plow through the possible serial numbers about one billion multiplied by the number of different s s combinations iff the phones transmit their serial nos as part of the message then what is to say that each phone can take that serial number and use it to generate the required key
