def login(cls, username, password, timestamp_array):
time_array = []
for i in range(len(timestamp_array) - 1):
time_array.append(
float(timestamp_array[i + 1] - timestamp_array[i]) /
float(1000))
print(time_array)
# Fetch user
user = User.fetch_by_username(username=username)
if not user:
return Response(code=400, message='Invalid Username')
# Fetch Password object
password = Password.fetch_by_userid(userid=user.id, password=password)
if not password:
return Response(code=400, message='Invalid Password')
# Fetch Password Analytics
password_analytics = PasswordAnalytics.fetch_by_password_id(
password_id=password.id)
# Get statistics of user input
sample_stats = Statistics(data_list=time_array)
sample_stats.compute_all()
# Get statistics of existing inputs
population_mean = Statistics.mean(password_analytics.aggregate,
password_analytics.count)
# Calculating the t statistic
t_stat = TTests.t_statistic(
population_mean=population_mean,
sample_mean=sample_stats.data_list_mean,
sample_std_deviation=sample_stats.data_list_standard_dev,
sample_length=sample_stats.data_list_len_f)
# Calculating the t distribution
t_dist_min, t_dist_max = TTests.t_distribution(
sample_length=sample_stats.data_list_len_f, alpha=0.01)
print(t_stat, t_dist_min, t_dist_max)
if t_stat < t_dist_min or t_stat > t_dist_max:
return Response(code=400, message='Intrusion Detected')
else:
password_analytics.update_analytics(
sample_stats.data_list_sum, int(sample_stats.data_list_len_f))
return Response(code=200, message='OK')
def register(cls, username, fname, lname, password, timestamp_array1,
timestamp_array2, timestamp_array3):
time_array1 = []
for i in range(len(timestamp_array1) - 1):
time_array1.append(
float(timestamp_array1[i + 1] - timestamp_array1[i]) /
float(1000))
time_array2 = []
for i in range(len(timestamp_array2) - 1):
time_array2.append(
float(timestamp_array2[i + 1] - timestamp_array2[i]) /
float(1000))
time_array3 = []
for i in range(len(timestamp_array3) - 1):
time_array3.append(
float(timestamp_array3[i + 1] - timestamp_array3[i]) /
float(1000))
print(time_array1, time_array2, time_array3)
# Create user
User.insert_into_user(username=username, fname=fname, lname=lname)
# Fetch user
user = User.fetch_by_username(username=username)
# Add new password
Password.insert_into_passwords(userid=user.id, password=password)
# Fetch the password
password = Password.fetch_by_userid(userid=user.id, password=password)
array1_sum = Statistics.sum(time_array1)
array2_sum = Statistics.sum(time_array2)
array3_sum = Statistics.sum(time_array3)
total_sum = array1_sum + array2_sum + array3_sum
total_lens = len(time_array1) + len(time_array2) + len(time_array3)
# Insert password analytics
PasswordAnalytics.insert_into_password_analytics(
password_id=password.id, aggregate=total_sum, count=total_lens)
return Response(code=200, message='OK')
