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rename functions and attributes

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This commit is contained in:
Donovan
2024-07-17 08:43:45 -05:00
parent d23ad7ac2b
commit c4d8233730
12 changed files with 195 additions and 79 deletions
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25
src/customer_db_model.py → src/customer.py
View File

@@ -1,12 +1,14 @@
from uuid import UUID
from pydantic import BaseModel
from src.customer_interface import CustomerInterface
from src.models import NKodePolicy
from src.user_db_model import UserDBModel
from src.utils import xor_lists
class CustomerDBModel(BaseModel):
class Customer(BaseModel):
customer_id: UUID
nkode_policy: NKodePolicy
interface: CustomerInterface
users: dict[str, UserDBModel]
@@ -15,7 +17,7 @@ class CustomerDBModel(BaseModel):
def valid_key_entry(self, username, selected_keys) -> bool:
assert (username in self.users.keys())
assert (all(key_idx < self.interface.numb_keys for key_idx in selected_keys))
assert (all(key_idx < self.interface.numb_of_keys for key_idx in selected_keys))
passcode_len = len(selected_keys)
user = self.users[username]
@@ -43,10 +45,10 @@ class CustomerDBModel(BaseModel):
return True
def renew_keys(self) -> bool:
attrs_before = self.interface.customer_interface.copy()
attrs_before = self.interface.attr_vals.copy()
sets_before = self.interface.set_vals.copy()
self.interface.renew_interface()
attrs_after = self.interface.customer_interface
attrs_after = self.interface.attr_vals
sets_after = self.interface.set_vals
attrs_xor = xor_lists(attrs_after, attrs_before)
@@ -54,3 +56,18 @@ class CustomerDBModel(BaseModel):
for user in self.users.values():
user.renew_keys(set_xor, attrs_xor)
return True
def valid_new_nkode(self, passcode_attr_idx: list[int]) -> bool:
nkode_len = len(passcode_attr_idx)
passcode_set_values = [
self.interface.get_attr_set_val(self.interface.attr_vals[attr_idx]) for attr_idx in passcode_attr_idx
]
distinct_sets = len(set(passcode_set_values))
distinct_attributes = len(set(passcode_attr_idx))
if (
self.nkode_policy.min_nkode_len <= nkode_len <= self.nkode_policy.max_nkode_len and
distinct_sets >= self.nkode_policy.distinct_sets and
distinct_attributes >= self.nkode_policy.distinct_attributes
):
return True
return False

16
src/customer_interface.py
View File

@@ -3,30 +3,30 @@ from src.utils import generate_random_nonrepeating_list
class CustomerInterface(BaseModel):
customer_interface: list[int]
attr_vals: list[int]
set_vals: list[int]
numb_keys: int
numb_of_keys: int
attrs_per_key: int
@staticmethod
def new_interface(numb_keys: int, attrs_per_key: int):
def new(numb_keys: int, attrs_per_key: int):
assert (numb_keys <= 256)
assert (attrs_per_key <= 256)
return CustomerInterface(
customer_interface=generate_random_nonrepeating_list(attrs_per_key * numb_keys),
attr_vals=generate_random_nonrepeating_list(attrs_per_key * numb_keys),
set_vals=generate_random_nonrepeating_list(attrs_per_key),
numb_keys=numb_keys,
numb_of_keys=numb_keys,
attrs_per_key=attrs_per_key,
)
def renew_interface(self):
self.customer_interface = generate_random_nonrepeating_list(self.attrs_per_key * self.numb_keys)
self.attr_vals = generate_random_nonrepeating_list(self.attrs_per_key * self.numb_of_keys)
self.set_vals = generate_random_nonrepeating_list(self.attrs_per_key)
def get_attr_set_val(self, attr: int) -> int:
assert (attr in self.customer_interface)
attr_idx = self.customer_interface.index(attr)
assert (attr in self.attr_vals)
attr_idx = self.attr_vals.index(attr)
set_idx = attr_idx % self.attrs_per_key
return self.set_vals[set_idx]

8
src/models.py
View File

@@ -9,3 +9,11 @@ class NKodeAttribute(BaseModel):
class EncipheredNKode(BaseModel):
code: str
mask: str
class NKodePolicy(BaseModel):
max_nkode_len: int = 10
min_nkode_len: int = 4
distinct_sets: int = 0
distinct_attributes: int = 4
# TODO: bytes_per_attr

6
src/user_cipher_keys.py
View File

@@ -18,7 +18,7 @@ class UserCipherKeys(BaseModel):
max_nkode_len: int = 10
@staticmethod
def new_user_encipher_keys(numb_of_keys: int, attrs_per_key: int, set_values: list[int]):
def new(numb_of_keys: int, attrs_per_key: int, set_values: list[int]):
assert len(set_values) == attrs_per_key
set_key = generate_random_nonrepeating_list(attrs_per_key)
@@ -65,7 +65,7 @@ class UserCipherKeys(BaseModel):
customer_interface: CustomerInterface
) -> EncipheredNKode:
passcode_attrs = [customer_interface.customer_interface[idx] for idx in passcode_attr_idx]
passcode_attrs = [customer_interface.attr_vals[idx] for idx in passcode_attr_idx]
passcode_sets = [customer_interface.get_attr_set_val(attr) for attr in passcode_attrs]
code = self.encipher_salt_hash_code(passcode_attr_idx, customer_interface)
mask = self.encipher_mask(passcode_sets, customer_interface)
@@ -80,7 +80,7 @@ class UserCipherKeys(BaseModel):
customer_interface: CustomerInterface,
) -> str:
passcode_len = len(passcode_attr_idx)
passcode_attrs = [customer_interface.customer_interface[idx] for idx in passcode_attr_idx]
passcode_attrs = [customer_interface.attr_vals[idx] for idx in passcode_attr_idx]
passcode_cipher = self.pass_key.copy()

4
src/user_db_model.py
View File

@@ -20,8 +20,8 @@ class UserDBModel(BaseModel):
self.user_keys.alpha_key = xor_lists(self.user_keys.alpha_key, attrs_xor)
def refresh_passcode(self, passcode_attr_idx: list[int], customer_interface: CustomerInterface):
self.user_keys = UserCipherKeys.new_user_encipher_keys(
customer_interface.numb_keys,
self.user_keys = UserCipherKeys.new(
customer_interface.numb_of_keys,
customer_interface.attrs_per_key,
customer_interface.set_vals

36
src/user_interface.py
View File

@@ -5,16 +5,16 @@ from src.utils import list_to_matrix, secure_fisher_yates_shuffle, matrix_to_lis
class UserInterface(BaseModel):
interface_index: list[int]
numb_sets: int
numb_keys: int
attrs_per_key: int
numb_of_keys: int
@classmethod
def new_interface(cls, numb_sets: int, numb_keys: int):
@staticmethod
def new(attrs_per_key: int, numb_of_keys: int):
# Todo: this a hack do a proper random interface
interface = UserInterface(
interface_index=list(range(numb_sets*numb_keys)),
numb_sets=numb_sets,
numb_keys=numb_keys,
interface_index=list(range(attrs_per_key * numb_of_keys)),
attrs_per_key=attrs_per_key,
numb_of_keys=numb_of_keys,
)
interface.disperse_interface()
for _ in range(10):
@@ -22,9 +22,9 @@ class UserInterface(BaseModel):
return interface
def disperse_interface(self):
user_interface_matrix = list_to_matrix(self.interface_index, self.numb_sets)
user_interface_matrix = list_to_matrix(self.interface_index, self.attrs_per_key)
shuffled_keys = secure_fisher_yates_shuffle(user_interface_matrix)
dispersed_interface = self._random_attribute_rotation(shuffled_keys, list(range(self.numb_sets)))
dispersed_interface = self._random_attribute_rotation(shuffled_keys, list(range(self.attrs_per_key)))
self.interface_index = matrix_to_list(dispersed_interface)
@staticmethod
@@ -33,11 +33,11 @@ class UserInterface(BaseModel):
def shuffle_interface(self):
"""just like dispersion but only half the sets are rotated"""
numb_of_selected_sets = self.numb_sets // 2
# randomly shuffle half the sets. if numb_sets is odd, randomly add one 50% of the time
numb_of_selected_sets += choice([0, 1]) if (self.numb_sets & 1) == 1 else 0
selected_sets = secure_fisher_yates_shuffle(list(range(self.numb_sets)))[:numb_of_selected_sets]
user_interface_matrix = list_to_matrix(self.interface_index, self.numb_sets)
numb_of_selected_sets = self.attrs_per_key // 2
# randomly shuffle half the sets. if attrs_per_key is odd, randomly add one 50% of the time
numb_of_selected_sets += choice([0, 1]) if (self.attrs_per_key & 1) == 1 else 0
selected_sets = secure_fisher_yates_shuffle(list(range(self.attrs_per_key)))[:numb_of_selected_sets]
user_interface_matrix = list_to_matrix(self.interface_index, 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)):
@@ -48,7 +48,7 @@ class UserInterface(BaseModel):
self.interface_index = matrix_to_list(self.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_keys)))[:self.numb_sets]
attr_rotation = secure_fisher_yates_shuffle(list(range(self.numb_of_keys)))[:self.attrs_per_key]
transposed_user_interface = self.matrix_transpose(user_interface)
assert (len(attr_rotation) == len(transposed_user_interface))
for idx, attr_set in enumerate(transposed_user_interface):
@@ -59,7 +59,7 @@ class UserInterface(BaseModel):
return self.matrix_transpose(transposed_user_interface)
def attribute_adjacency_graph(self) -> dict[int, set[int]]:
user_interface_keypad = list_to_matrix(self.interface_index, self.numb_sets)
user_interface_keypad = list_to_matrix(self.interface_index, self.attrs_per_key)
graph = {}
for key in user_interface_keypad:
for attr in key:
@@ -69,6 +69,6 @@ class UserInterface(BaseModel):
return graph
def get_key_attr_idxs(self, key_numb: int) -> list[int]:
assert (0 <= key_numb < self.numb_keys)
keypad_attr_idx = list_to_matrix(self.interface_index, self.numb_sets)
assert (0 <= key_numb < self.numb_of_keys)
keypad_attr_idx = list_to_matrix(self.interface_index, self.attrs_per_key)
return keypad_attr_idx[key_numb]