Suppose the website uses the following silly function to verify a k$-$byte cookie:

def verify$($submitted$\_$ck$,$ stored$\_$ck$)$:

for i in range$($K$)$:

if submitted$\_$ck$[$i$]==$ stored$\_$ck$[$i$]$:

sleep$(1)$

else:

return False

return True

If the verify$()$ return False, the website will respond with a HTTP status $200$ OK$,$ otherwise it responds

with status $403$ Forbidden. Show that it's possible for an attacker to guess the cookie using ~$256$K trials.