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Remove unused variables & functions #4

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Remove unused variables & functions #4

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53 changes: 4 additions & 49 deletions security/compute_sec_loss.ver1.py
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Original file line number Diff line number Diff line change
Expand Up @@ -44,12 +44,9 @@ def greedy_maxcoverage_heap(attacker_pwmodel, typofixer, q=100):

subset_heap = priority_dict()
b = typofixer.max_ball_size # ball size
n = typofixer.max_nh_size # neighborhood size
pwlist = attacker_pwmodel.iterpasswords()
guess_list = []
tpw_done = set() # to make the probabiltiy zero,
l = 0
estimated_ball_weight = 0.0
normal_guesses = []
def totp(l):
return sum(attacker_pwmodel.prob(pw) for pw in l)
Expand All @@ -61,9 +58,6 @@ def totp(l):
if len(normal_guesses)<q:
normal_guesses.append(rpw)
p = attacker_pwmodel.prob(rpw)
if estimated_ball_weight <= 0:
# The weight of the heaviest ball in rpw's neighbor
estimated_ball_weight = p * b()
# if subset heap is not empty, take out the heaviest ball in it
if subset_heap:
[tpw, weight] = subset_heap.pop_smallest()
Expand All @@ -79,7 +73,6 @@ def totp(l):
list((typofixer.check(tpw)|set([tpw])) - rpw_done)[:10],
power(tpw)))
guess_list.append(tpw)
tpw_done.add(tpw)
new_killed = (typofixer.check(tpw) | set([tpw])) - rpw_done
rpw_done |= new_killed

Expand All @@ -97,15 +90,15 @@ def totp(l):
else:
break;

if tpw and weight > 0 and tpw not in subset_heap and tpw not in tpw_done:
if tpw and weight > 0 and tpw not in subset_heap and tpw not in guess_list:
# assert tpw not in subset_heap
subset_heap[tpw] = -weight

# Insert the neighbors of this rpw
# all the neighbors including itself
# if it is not already dead or in the heap
all_nhs = [ttpw for ttpw in typofixer.get_nh(rpw) | set([rpw])
if (ttpw not in subset_heap) and (ttpw not in tpw_done)]
if (ttpw not in subset_heap) and (ttpw not in guess_list)]
# weights = [power(ttpw) for ttpw in all_nhs]
with joblib.Parallel(n_jobs=7) as parallel:
weights = parallel(
Expand Down Expand Up @@ -172,50 +165,12 @@ def totprob(l):
# print "New passwords that will be compromised:", ball - set(normal_guesses[:tq])
lambda_q = totprob(normal_guesses[:tq])
lambda_tilde_q = totprob(ball)
# print(normal_guesses[:tq])
# print(ball)
print("{:5d}, {:-9.5f}, {:-13.5f}, {:-8.5f}" \
.format(tq, lambda_q, lambda_tilde_q, (lambda_tilde_q - lambda_q)))


def test_success_rate(real_pwm_f):
pwm = HistPw(real_pwm_f)
attacker_pwmodel = HistPw(os.path.expanduser('~/passwords/rockyou-withcount.txt.bz2'))
Q = [10, 100, 1000]
typofixer = BUILT_IN_CHECKERS['ChkBl_Top3']
tpw_data = json.load(open('coverage.log'))['guesslist'][:max(Q)]
tpwlist, tpwp_ = zip(*tpw_data)
print("Num guesses: {}, Total prob covered: {}".format(len(tpwp_), sum(tpwp_)))

def totprob(l):
return sum(pwm.prob(pw) for pw in l)

normal_guesses = [pw for pw, c in attacker_pwmodel.iterpasswords(n=len(tpwlist)*2) if len(pw)>=6][:len(tpwlist)]
print(real_pwm_f)
######################################### Debug ##############################
# assert len(normal_guesses) == len(tpwlist)
# done = set()
# nwp, tpwp = 0, 0
# for i, w in enumerate(normal_guesses):
# tpw = tpwlist[i]
# killing = (typofixer.get_ball(tpw) | set([tpw])) - done
# done |= killing
# weight = totprob(killing)
# nwp += pwm.prob(w)
# tpwp += weight
# if tpwp < nwp:
# print "{!r},{!r},{}<-->{}".format(w, tpw, pwm.prob(w), weight)
###########################################################################
# tpwp = pwm.prob_correction(tpwp)
# nwp = pwm.prob_correction(nwp)
# print tpwp, nwp, tpwp - nwp
for q in Q:
ball = typofixer.get_ball_union(tpwlist[:q])
print(set(normal_guesses[:q]) - ball)
lambda_q = totprob(normal_guesses[:q])
lambda_tilde_q = totprob(ball)
print("{:.5f}, {:.5f}, {:.5f}" \
.format(lambda_q, lambda_tilde_q, (lambda_tilde_q - lambda_q)))


if __name__ == "__main__":
# attacker_model = ""
# real_pw_model = ""
Expand Down