Tue 5 Jun, 2012 06:00 am - Suppose you are given (1) a natural number N; (2) a set of natural num-
bers S = {n1; n2; : : : }; (3) a set of arithmetic operators, say +; -;*; =
(with the usual meaning of addition,... (view)
Sat 2 Jun, 2012 04:34 pm - System A uses 4-digit personal secret numbers (i.e., 0000{9999), and
on each login attempt it randomly chooses two of the numbers and asks
the user to cite them.
if attacker has made one... (view)
