Ha, so the key really was "RANDOM_STRING", in the literal sense...was that just the programmer giving up, or was that pseudocode that was missed during shipping?
"RANDOM_BITS"
You can even show your support: http://www.zazzle.com/14_is_not_a_random_number_tshirts-2350...
Or, for those who disagree: http://www.zazzle.com/14_is_a_random_number_t_shirts-2350463...