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refactor user_signup_session.py

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This commit is contained in:
Donovan
2024-07-17 11:51:48 -05:00
parent 802bd46d60
commit 310a86a5f9
6 changed files with 92 additions and 82 deletions
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2
src/customer_interface.py
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@@ -1,5 +1,5 @@
from pydantic import BaseModel
from src.utils import generate_random_nonrepeating_list
from src.utils import generate_random_nonrepeating_list, list_to_matrix, matrix_transpose
class CustomerInterface(BaseModel):

31
src/session_cache.py
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@@ -1,31 +0,0 @@
from uuid import UUID
from pydantic import BaseModel
class SessionCache(BaseModel):
session_id: UUID
set_interface: list[int] | None = None
confirm_interface: list[int] | None = None
set_key_entry: list[int] | None = None
confirm_key_entry: list[int] | None = None
username: str | None = None
customer_id: UUID
def deduce_passcode(self, attrs_per_key, confirm_key_entry: list[int]) -> list[int]:
set_key_entry = self.set_key_entry
assert (len(set_key_entry) == len(confirm_key_entry))
set_interface = self.set_interface
confirm_interface = self.confirm_interface
set_key_vals = [set_interface[key * attrs_per_key:(key + 1) * attrs_per_key] for key in set_key_entry]
confirm_key_vals = [confirm_interface[key * attrs_per_key:(key + 1) * attrs_per_key] for key in
confirm_key_entry]
passcode = []
for idx in range(len(set_key_entry)):
set_key = set(set_key_vals[idx])
confirm_key = set(confirm_key_vals[idx])
intersection = list(set_key.intersection(confirm_key))
assert (len(intersection) == 1)
passcode.append(intersection[0])
return passcode

14
src/user_interface.py
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@@ -1,6 +1,6 @@
from pydantic import BaseModel
from secrets import choice
from src.utils import list_to_matrix, secure_fisher_yates_shuffle, matrix_to_list
from src.utils import list_to_matrix, secure_fisher_yates_shuffle, matrix_to_list, matrix_transpose
class UserInterface(BaseModel):
@@ -27,10 +27,6 @@ class UserInterface(BaseModel):
dispersed_interface = self._random_attribute_rotation(shuffled_keys, list(range(self.attrs_per_key)))
self.attr_indices = matrix_to_list(dispersed_interface)
@staticmethod
def matrix_transpose(interface: list[list[int]]) -> list[list[int]]:
return [list(row) for row in zip(*interface)]
def shuffle_interface(self):
"""just like dispersion but only half the sets are rotated"""
numb_of_selected_sets = self.attrs_per_key // 2
@@ -40,23 +36,23 @@ class UserInterface(BaseModel):
user_interface_matrix = list_to_matrix(self.attr_indices, self.attrs_per_key)
shuffled_keys = secure_fisher_yates_shuffle(user_interface_matrix)
interface_by_sets = []
for idx, attrs in enumerate(self.matrix_transpose(shuffled_keys)):
for idx, attrs in enumerate(matrix_transpose(shuffled_keys)):
if idx in selected_sets:
interface_by_sets.append(secure_fisher_yates_shuffle(attrs))
else:
interface_by_sets.append(attrs)
self.attr_indices = matrix_to_list(self.matrix_transpose(interface_by_sets))
self.attr_indices = matrix_to_list(matrix_transpose(interface_by_sets))
def _random_attribute_rotation(self, user_interface: list[list[int]], selected_sets: list[int]) -> list[list[int]]:
attr_rotation = secure_fisher_yates_shuffle(list(range(self.numb_of_keys)))[:self.attrs_per_key]
transposed_user_interface = self.matrix_transpose(user_interface)
transposed_user_interface = matrix_transpose(user_interface)
assert (len(attr_rotation) == len(transposed_user_interface))
for idx, attr_set in enumerate(transposed_user_interface):
if idx not in selected_sets:
continue
rotation = attr_rotation[idx]
transposed_user_interface[idx] = attr_set[rotation:] + attr_set[:rotation]
return self.matrix_transpose(transposed_user_interface)
return matrix_transpose(transposed_user_interface)
def attribute_adjacency_graph(self) -> dict[int, set[int]]:
user_interface_keypad = list_to_matrix(self.attr_indices, self.attrs_per_key)

71
src/user_signup_session.py Normal file
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@@ -0,0 +1,71 @@
from uuid import UUID
from pydantic import BaseModel
from src.customer import Customer
from src.user import User
from src.user_cipher_keys import UserCipherKeys
from src.user_interface import UserInterface
class UserSignupSession(BaseModel):
session_id: UUID
customer_id: UUID
set_interface: list[int] | None = None
confirm_interface: list[int] | None = None
set_key_entry: list[int] | None = None
confirm_key_entry: list[int] | None = None
username: str | None = None
def _deduce_passcode(self, attrs_per_key, confirm_key_entry: list[int]) -> list[int]:
set_key_entry = self.set_key_entry
assert (len(set_key_entry) == len(confirm_key_entry))
set_interface = self.set_interface
confirm_interface = self.confirm_interface
set_key_vals = [set_interface[key * attrs_per_key:(key + 1) * attrs_per_key] for key in set_key_entry]
confirm_key_vals = [confirm_interface[key * attrs_per_key:(key + 1) * attrs_per_key] for key in
confirm_key_entry]
passcode = []
for idx in range(len(set_key_entry)):
set_key = set(set_key_vals[idx])
confirm_key = set(confirm_key_vals[idx])
intersection = list(set_key.intersection(confirm_key))
assert (len(intersection) == 1)
passcode.append(intersection[0])
return passcode
def set_user_nkode(self, username: str, customer: Customer, key_selection: list[int]):
assert (customer.customer_id == self.customer_id)
numb_of_keys = customer.interface.numb_of_keys
attrs_per_key = customer.interface.attrs_per_key
assert (all(0 <= key <= numb_of_keys for key in key_selection))
set_interface = UserInterface(
attr_indices=self.set_interface,
attrs_per_key=attrs_per_key,
numb_of_keys=numb_of_keys,
)
set_interface.disperse_interface()
self.username = username
self.set_key_entry = key_selection
self.confirm_interface = set_interface.attr_indices
def create_user(self, username: str, customer: Customer, confirm_key_entry: list[int]) -> User:
numb_of_keys = customer.interface.numb_of_keys
attrs_per_key = customer.interface.attrs_per_key
assert (all(0 <= key <= numb_of_keys for key in confirm_key_entry))
passcode_attrs = self._deduce_passcode(attrs_per_key, confirm_key_entry)
set_values = customer.interface.set_vals
assert customer.valid_new_nkode(passcode_attrs)
new_user_keys = UserCipherKeys.new(numb_of_keys, attrs_per_key, set_values, customer.nkode_policy.max_nkode_len)
enciphered_passcode = new_user_keys.encipher_nkode(passcode_attrs, customer.interface)
return User(
username=username,
enciphered_passcode=enciphered_passcode,
user_keys=new_user_keys,
user_interface=UserInterface(
attr_indices=self.confirm_interface,
attrs_per_key=attrs_per_key,
numb_of_keys=numb_of_keys,
),
)

4
src/utils.py
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@@ -27,5 +27,9 @@ def list_to_matrix(lst: list[int], cols: int) -> list[list[int]]:
return [lst[i:i + cols] for i in range(0, len(lst), cols)]
def matrix_transpose(interface: list[list[int]]) -> list[list[int]]:
return [list(row) for row in zip(*interface)]
def int_array_to_bytes(int_arr: list[int], byte_size: int = 2) -> bytes:
return b"".join([numb.to_bytes(byte_size, byteorder='big') for numb in int_arr])