805 lines
26 KiB
Plaintext
805 lines
26 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "code",
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"source": [
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"import sys\n",
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"import os\n",
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"sys.path.append(os.path.abspath('..')) # Adds the parent directory to path\n",
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"from src.nkode_api import NKodeAPI\n",
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"from src.models import NKodePolicy, KeypadSize\n",
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"from src.utils import select_keys_with_passcode_values\n",
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"from secrets import choice\n",
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"from string import ascii_lowercase\n",
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"import numpy as np\n",
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"import bcrypt\n",
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"import hashlib\n",
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"import base64\n",
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"from IPython.display import Markdown, display\n",
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"\n",
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"def random_username() -> str:\n",
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" return \"test_username\" + \"\".join([choice(ascii_lowercase) for _ in range(6)])\n",
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"\n",
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"\n",
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"def keypad_view(keypad: np.ndarray, props_per_key: int):\n",
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" interface_keypad = keypad.reshape(-1, props_per_key)\n",
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" for idx, key_vals in enumerate(interface_keypad):\n",
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" print(f\"Key {idx}: {key_vals}\")\n"
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],
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"metadata": {
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"collapsed": false,
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"ExecuteTime": {
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"end_time": "2025-03-24T20:06:28.904351Z",
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"start_time": "2025-03-24T20:06:28.864248Z"
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}
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},
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"outputs": [],
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"execution_count": 4
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},
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{
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"metadata": {},
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"cell_type": "code",
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"outputs": [],
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"execution_count": null,
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"source": [
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"api = NKodeAPI()\n",
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"user_icons = np.array([\n",
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" \"😀\", \"😂\", \"🥳\", \"😍\", \"🤓\",\n",
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" \"😎\", \"🥺\", \"😡\", \"😱\", \"🤯\",\n",
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" \"🥰\", \"😴\", \"🤔\", \"🙃\", \"😇\",\n",
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" \"🤖\", \"👽\", \"👾\", \"🐱\", \"🐶\",\n",
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" \"🦁\", \"🐻\", \"🐸\", \"🐙\", \"🦄\",\n",
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" \"🌟\", \"⚡\", \"🔥\", \"🍕\", \"🎉\"\n",
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"])"
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]
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},
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{
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"metadata": {},
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"cell_type": "markdown",
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"source": [
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"### nKode Customer\n",
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"An nKode customer is business has employees (users). An nKode API can service many customers each with their own users.\n",
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"Each customer specifies a keypad size and a nkode policy.\n",
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"The keypad can't be dispersable (`numb_of_keys < properties_per_key`)"
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]
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},
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{
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"metadata": {},
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"cell_type": "markdown",
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"source": [
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"#### Customer Cipher Keys\n",
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"Each customer has unique cipher keys.\n",
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"These keys are used to encipher and decipher a user's nKode.\n",
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"There are two types of Customer Cipher Keys:\n",
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"1. property key: Combined with the user property key to get the server-side representation of a users icons.\n",
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"2. position key: Combined with the user position key to get the server-side representation the position in each key.\n"
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]
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},
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{
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"metadata": {},
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"cell_type": "code",
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"outputs": [],
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"execution_count": null,
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"source": [
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"policy = NKodePolicy(\n",
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" max_nkode_len=10,\n",
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" min_nkode_len=4,\n",
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" distinct_positions=0,\n",
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" distinct_properties=4,\n",
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")\n",
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"keypad_size = KeypadSize(\n",
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" numb_of_keys = 5,\n",
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" props_per_key = 6\n",
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")\n",
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"customer_id = api.create_new_customer(keypad_size, policy)\n",
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"customer = api.customers[customer_id]\n",
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"print(f\"Customer Position Key: {customer.cipher.position_key}\")\n",
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"print(f\"Customer Properties Key:\")\n",
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"customer_prop_keypad = customer.cipher.property_key.reshape(-1, keypad_size.props_per_key)\n",
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"for idx, key_vals in enumerate(customer_prop_keypad):\n",
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" print(f\"{key_vals}\")\n",
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"position_properties_dict = dict(zip(customer.cipher.position_key, customer_prop_keypad.T))\n",
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"print(f\"Position to Properties Map:\")\n",
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"for pos_val, props in position_properties_dict.items():\n",
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" print(f\"{pos_val}: {props}\")"
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]
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},
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{
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"metadata": {},
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"cell_type": "code",
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"outputs": [],
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"execution_count": null,
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"source": [
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"user_icon_keypad = user_icons.reshape(-1, keypad_size.props_per_key)\n",
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"pos_icons_dict = dict(zip(customer.cipher.position_key, user_icon_keypad.T))\n",
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"print(\"Position Value to Icons Map:\")\n",
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"for pos_val, icons in pos_icons_dict.items():\n",
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" print(f\"{pos_val}: {icons}\")\n"
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]
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},
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{
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"metadata": {},
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"cell_type": "markdown",
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"source": [
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"### User Signup\n",
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"Users can create an nKode with these steps:\n",
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"1. Generate a randomly shuffled keypad\n",
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"2. Set user nKode\n",
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"3. Confirm user nKode\n",
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"\n",
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"#### Generate Keypad\n",
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" For the server to determine the users nKode, the user's keypad must be dispersable.\n",
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" To make the keypad dispersable, the server will randomly drop key positions so the number of properties per key is equal to the number of keys.\n",
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" In our case, the server drops 1 key position to give us a 5 X 5 keypad with possible index values ranging from 0-29.\n",
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" - Run the cell below over and over to see it change. Notice that values never move out of their columns just their rows.\n",
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" - each value in the keypad is the index value of a customer properties\n",
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" - the user never learns their server-side properties"
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]
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},
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{
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"metadata": {},
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"cell_type": "code",
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"outputs": [],
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"execution_count": null,
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"source": [
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"username = random_username()\n",
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"signup_session_id, set_signup_keypad = api.generate_signup_keypad(customer_id, username)\n",
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"display(Markdown(\"\"\"### Icon Keypad\"\"\"))\n",
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"keypad_view(user_icons[set_signup_keypad], keypad_size.numb_of_keys)\n",
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"display(Markdown(\"\"\"### Index Keypad\"\"\"))\n",
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"keypad_view(set_signup_keypad, keypad_size.numb_of_keys)\n",
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"display(Markdown(\"\"\"### Customer Properties Keypad\"\"\"))\n",
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"keypad_view(customer.cipher.property_key[set_signup_keypad], keypad_size.numb_of_keys)"
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]
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},
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{
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"metadata": {},
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"cell_type": "markdown",
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"source": [
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"### Set nKode\n",
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"The client receives `user_icons`, `set_signup_keypad`\n"
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]
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},
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{
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"metadata": {
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"ExecuteTime": {
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"end_time": "2025-03-24T09:48:10.726327Z",
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"start_time": "2025-03-24T09:48:10.723046Z"
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}
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},
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"cell_type": "code",
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"User Passcode Indices: [8, 15, 17, 7]\n",
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"User Passcode Icons: ['😱' '🤖' '👾' '😡']\n",
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"User Passcode Server-side properties: [59668 24111 25394 7431]\n",
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"Selected Keys: [3, 1, 4, 3]\n"
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]
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}
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],
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"execution_count": 6,
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"source": [
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"passcode_len = 4\n",
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"passcode_property_indices = np.random.choice(set_signup_keypad.reshape(-1), size=passcode_len, replace=False).tolist()\n",
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"selected_keys_set = select_keys_with_passcode_values(passcode_property_indices, set_signup_keypad, keypad_size.numb_of_keys)\n",
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"print(f\"User Passcode Indices: {passcode_property_indices}\")\n",
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"print(f\"User Passcode Icons: {user_icons[passcode_property_indices]}\")\n",
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"print(f\"User Passcode Server-side properties: {customer.cipher.property_key[passcode_property_indices]}\")\n",
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"print(f\"Selected Keys: {selected_keys_set}\")"
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]
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},
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{
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"metadata": {},
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"cell_type": "markdown",
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"source": [
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"### Confirm nKode\n",
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"Submit the set key entry to render the confirm keypad."
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]
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},
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{
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"metadata": {
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"ExecuteTime": {
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"end_time": "2025-03-24T09:48:11.002815Z",
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"start_time": "2025-03-24T09:48:10.759840Z"
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}
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},
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"cell_type": "code",
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"source": [
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"confirm_keypad = api.set_nkode(customer_id, selected_keys_set, signup_session_id)\n",
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"keypad_view(confirm_keypad, keypad_size.numb_of_keys)\n",
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"selected_keys_confirm = select_keys_with_passcode_values(passcode_property_indices, confirm_keypad, keypad_size.numb_of_keys)\n",
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"print(f\"Selected Keys\\n{selected_keys_confirm}\")\n",
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"success = api.confirm_nkode(customer_id, selected_keys_confirm, signup_session_id)\n",
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"assert success"
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],
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Key 0: [ 1 26 9 4 11]\n",
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"Key 1: [19 8 3 28 17]\n",
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"Key 2: [ 7 20 21 10 23]\n",
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"Key 3: [13 14 15 16 5]\n",
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"Key 4: [25 2 27 22 29]\n",
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"Selected Keys\n",
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"[1, 3, 1, 2]\n"
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]
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}
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],
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"execution_count": 7
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},
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{
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"metadata": {},
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"cell_type": "markdown",
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"source": "### Inferring an nKode selection"
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},
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{
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"metadata": {
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"ExecuteTime": {
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"end_time": "2025-03-24T09:48:11.011978Z",
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"start_time": "2025-03-24T09:48:11.009413Z"
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}
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},
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"cell_type": "code",
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"source": [
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"for idx in range(passcode_len):\n",
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" selected_key_set = selected_keys_set[idx]\n",
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" selected_set_key_idx = set_signup_keypad.reshape(-1, keypad_size.numb_of_keys)[selected_key_set]\n",
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" print(f\"Set Key {idx}: {user_icons[selected_set_key_idx]}\")\n",
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" selected_key_confirm = selected_keys_confirm[idx]\n",
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" selected_confirm_key_idx = confirm_keypad.reshape(-1, keypad_size.numb_of_keys)[selected_key_confirm]\n",
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" print(f\"Confirm Key {idx}: {user_icons[selected_confirm_key_idx]}\")\n",
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" print(f\"Overlapping icon {user_icons[passcode_property_indices[idx]]}\")"
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],
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Set Key 0: ['😡' '😱' '🔥' '👽' '😴']\n",
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"Confirm Key 0: ['🐶' '😱' '😍' '🍕' '👾']\n",
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"Overlapping icon 😱\n",
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"Set Key 1: ['🐶' '⚡' '🤖' '🥰' '🎉']\n",
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"Confirm Key 1: ['🙃' '😇' '🤖' '👽' '😎']\n",
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"Overlapping icon 🤖\n",
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"Set Key 2: ['🙃' '🦁' '🤯' '🐸' '👾']\n",
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"Confirm Key 2: ['🐶' '😱' '😍' '🍕' '👾']\n",
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"Overlapping icon 👾\n",
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"Set Key 3: ['😡' '😱' '🔥' '👽' '😴']\n",
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"Confirm Key 3: ['😡' '🦁' '🐻' '🥰' '🐙']\n",
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"Overlapping icon 😡\n"
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]
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}
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],
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"execution_count": 8
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},
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{
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"metadata": {},
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"cell_type": "markdown",
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"source": [
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"## User Cipher\n",
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"\n",
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"Users have 4 cipher keys:\n",
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"1. property_key: The counterpart to the `customer_prop_key`. A user's server-side passcode is composed of elements in `user_prop_key XOR customer_prop_key`.\n",
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"2. pass_key: The passcode key is used to encipher user passcode\n",
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"3. combined_position_key: The combined position key is `user_pos_key XOR customer_pos_key`.\n",
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"4. mask_key: The mask key used to encipher user nKode\n",
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"\n",
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"\n"
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]
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},
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{
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"metadata": {
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"ExecuteTime": {
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"end_time": "2025-03-24T09:48:11.030598Z",
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"start_time": "2025-03-24T09:48:11.025452Z"
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}
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},
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"cell_type": "code",
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"source": [
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"from src.user_cipher import UserCipher\n",
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"user_cipher = UserCipher.create(keypad_size, customer.cipher.position_key, customer.nkode_policy.max_nkode_len)\n",
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"user_prop_key_keypad = user_cipher.property_key.reshape(-1, keypad_size.props_per_key)"
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],
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"outputs": [],
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"execution_count": 9
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},
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{
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"metadata": {
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"ExecuteTime": {
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"end_time": "2025-03-24T09:48:11.049702Z",
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"start_time": "2025-03-24T09:48:11.047621Z"
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}
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},
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"cell_type": "code",
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"source": "print(f\"Property Key:\\n{user_prop_key_keypad}\")",
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Property Key:\n",
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"[[12284 15976 959 23676 56686 51545]\n",
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" [ 8349 41940 14857 24411 28369 47234]\n",
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" [42434 47287 23836 29864 11461 30858]\n",
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" [39973 19733 43467 29927 8960 22628]\n",
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" [26608 3550 57761 58209 11329 828]]\n"
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]
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}
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],
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"execution_count": 10
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},
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{
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"metadata": {
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"ExecuteTime": {
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"end_time": "2025-03-24T09:48:11.080213Z",
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"start_time": "2025-03-24T09:48:11.077878Z"
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}
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},
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"cell_type": "code",
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"source": "print(f\"Passcode Key: {user_cipher.pass_key}\")",
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Passcode Key: [43421 54264 31716 41010 25784 51749 8406 27083 36329 63965]\n"
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]
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}
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],
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"execution_count": 11
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},
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{
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"metadata": {
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"ExecuteTime": {
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"end_time": "2025-03-24T09:48:11.120295Z",
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"start_time": "2025-03-24T09:48:11.118074Z"
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}
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},
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"cell_type": "code",
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"source": "print(f\"Mask Key: {user_cipher.mask_key}\")",
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Mask Key: [27744 6339 46141 38859 23071 28613 2855 48530 24494 59329]\n"
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]
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}
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],
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"execution_count": 12
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},
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{
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"metadata": {
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"ExecuteTime": {
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"end_time": "2025-03-24T09:48:11.158895Z",
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"start_time": "2025-03-24T09:48:11.156729Z"
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}
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},
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"cell_type": "code",
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"source": "print(f\"Combined Position Key: {user_cipher.combined_position_key}\")",
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Combined Position Key: [42763 65304 30825 5938 4970 58530]\n"
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]
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}
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],
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"execution_count": 13
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},
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{
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"metadata": {
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"ExecuteTime": {
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"end_time": "2025-03-24T09:48:11.183517Z",
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"start_time": "2025-03-24T09:48:11.181587Z"
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}
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},
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"cell_type": "code",
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"source": "print(f\"User Position Key = combined_pos_key XOR customer_pos_key: {user_cipher.combined_position_key ^ customer.cipher.position_key}\")",
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"User Position Key = combined_pos_key XOR customer_pos_key: [46883 788 17499 12342 17274 44356]\n"
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]
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}
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],
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"execution_count": 14
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},
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{
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"metadata": {
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"ExecuteTime": {
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"end_time": "2025-03-24T09:48:11.207260Z",
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"start_time": "2025-03-24T09:48:11.204729Z"
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}
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},
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"cell_type": "code",
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"source": [
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"position_properties_dict = dict(zip(user_cipher.combined_position_key, user_prop_key_keypad.T))\n",
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"print(f\"Combined Position to Properties Map:\")\n",
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"for pos_val, props in position_properties_dict.items():\n",
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" print(f\"{pos_val}: {props}\")"
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],
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Combined Position to Properties Map:\n",
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"42763: [12284 8349 42434 39973 26608]\n",
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"65304: [15976 41940 47287 19733 3550]\n",
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"30825: [ 959 14857 23836 43467 57761]\n",
|
|
"5938: [23676 24411 29864 29927 58209]\n",
|
|
"4970: [56686 28369 11461 8960 11329]\n",
|
|
"58530: [51545 47234 30858 22628 828]\n"
|
|
]
|
|
}
|
|
],
|
|
"execution_count": 15
|
|
},
|
|
{
|
|
"metadata": {},
|
|
"cell_type": "markdown",
|
|
"source": [
|
|
"#### Encipher Mask\n",
|
|
"1. Get the `padded_passcode_position_indices`; padded with random position indices to equal length `max_nkode_len`.\n",
|
|
"2. Recover the `user_position_key`. Recall `user.cipher.combined_position_key = user_position_key XOR customer.cipher.positon_key`\n",
|
|
"3. Order the `user_position_key` by the `padded_passcode_position_indices`\n",
|
|
"4. Mask the `ordered_user_position_key`\n",
|
|
"5. Base 64 encode the mask"
|
|
]
|
|
},
|
|
{
|
|
"metadata": {
|
|
"ExecuteTime": {
|
|
"end_time": "2025-03-24T09:48:11.235048Z",
|
|
"start_time": "2025-03-24T09:48:11.232871Z"
|
|
}
|
|
},
|
|
"cell_type": "code",
|
|
"source": [
|
|
"padded_passcode_position_indices = customer.cipher.get_passcode_position_indices_padded(list(passcode_property_indices), customer.nkode_policy.max_nkode_len)\n",
|
|
"user_position_key = user_cipher.combined_position_key ^ customer.cipher.position_key\n",
|
|
"ordered_user_position_key = user_position_key[padded_passcode_position_indices]\n",
|
|
"mask = ordered_user_position_key ^ user_cipher.mask_key\n",
|
|
"encoded_mask = user_cipher.encode_base64_str(mask)"
|
|
],
|
|
"outputs": [],
|
|
"execution_count": 16
|
|
},
|
|
{
|
|
"metadata": {},
|
|
"cell_type": "markdown",
|
|
"source": [
|
|
"#### Encipher Passcode\n",
|
|
"1. Compute `combined_property_key`\n",
|
|
"2. Recover `user_passcode = ordered_combined_proptery_key`; order by passcode_property_indices\n",
|
|
"3. Zero pad `user_pascode`\n",
|
|
"4. Encipher `user_passcode` with `user.cipher.pass_key`\n",
|
|
"5. Hash `ciphered_passcode`"
|
|
]
|
|
},
|
|
{
|
|
"metadata": {
|
|
"ExecuteTime": {
|
|
"end_time": "2025-03-24T09:48:11.484858Z",
|
|
"start_time": "2025-03-24T09:48:11.252168Z"
|
|
}
|
|
},
|
|
"cell_type": "code",
|
|
"source": [
|
|
"combined_prop_key = customer.cipher.property_key ^ user_cipher.property_key\n",
|
|
"user_passcode = combined_prop_key[passcode_property_indices]\n",
|
|
"pad_len = customer.nkode_policy.max_nkode_len - passcode_len\n",
|
|
"padded_passcode = np.concatenate((user_passcode, np.zeros(pad_len, dtype=user_passcode.dtype)))\n",
|
|
"ciphered_passcode = padded_passcode ^ user_cipher.pass_key\n",
|
|
"passcode_prehash = base64.b64encode(hashlib.sha256(ciphered_passcode.tobytes()).digest())\n",
|
|
"passcode_hash = bcrypt.hashpw(passcode_prehash, bcrypt.gensalt(rounds=12)).decode(\"utf-8\")"
|
|
],
|
|
"outputs": [],
|
|
"execution_count": 17
|
|
},
|
|
{
|
|
"metadata": {},
|
|
"cell_type": "markdown",
|
|
"source": [
|
|
"### User Login\n",
|
|
"1. Get login keypad\n",
|
|
"2. Select keys with passcode icons (in our case, passcode property indices)\n"
|
|
]
|
|
},
|
|
{
|
|
"metadata": {
|
|
"ExecuteTime": {
|
|
"end_time": "2025-03-24T09:48:11.722985Z",
|
|
"start_time": "2025-03-24T09:48:11.488809Z"
|
|
}
|
|
},
|
|
"cell_type": "code",
|
|
"source": [
|
|
"login_keypad = api.get_login_keypad(username, customer_id)\n",
|
|
"keypad_view(login_keypad, keypad_size.props_per_key)\n",
|
|
"selected_keys_login = select_keys_with_passcode_values(passcode_property_indices, login_keypad, keypad_size.props_per_key)\n",
|
|
"print(f\"User Passcode: {passcode_property_indices}\\n\")\n",
|
|
"print(f\"Selected Keys:\\n {selected_keys_login}\\n\")\n",
|
|
"success = api.login(customer_id, username, selected_keys_login)\n",
|
|
"assert success"
|
|
],
|
|
"outputs": [
|
|
{
|
|
"name": "stdout",
|
|
"output_type": "stream",
|
|
"text": [
|
|
"Key 0: [18 1 2 21 28 5]\n",
|
|
"Key 1: [12 19 26 15 10 29]\n",
|
|
"Key 2: [ 0 25 14 3 4 23]\n",
|
|
"Key 3: [ 6 7 8 27 16 11]\n",
|
|
"Key 4: [24 13 20 9 22 17]\n",
|
|
"User Passcode: [8, 15, 17, 7]\n",
|
|
"\n",
|
|
"Selected Keys:\n",
|
|
" [3, 1, 4, 3]\n",
|
|
"\n"
|
|
]
|
|
}
|
|
],
|
|
"execution_count": 18
|
|
},
|
|
{
|
|
"metadata": {},
|
|
"cell_type": "markdown",
|
|
"source": [
|
|
"## Validate Login Key Entry\n",
|
|
"- decipher user mask and recover nkode position values\n",
|
|
"- get presumed properties from key selection and position values\n",
|
|
"- compare with hash"
|
|
]
|
|
},
|
|
{
|
|
"metadata": {},
|
|
"cell_type": "markdown",
|
|
"source": [
|
|
"### Decipher Mask\n",
|
|
"Recover nKode position values:\n",
|
|
"- decode mask from base64 to int\n",
|
|
"- ordered_user_position_key = mask ^ mask_key\n",
|
|
"- user_position_key = user.cipher.co\n",
|
|
"- deduce the set indices"
|
|
]
|
|
},
|
|
{
|
|
"metadata": {
|
|
"ExecuteTime": {
|
|
"end_time": "2025-03-24T09:48:11.731909Z",
|
|
"start_time": "2025-03-24T09:48:11.729517Z"
|
|
}
|
|
},
|
|
"cell_type": "code",
|
|
"source": [
|
|
"login_keypad = api.get_login_keypad(username, customer_id)\n",
|
|
"selected_keys_login = select_keys_with_passcode_values(passcode_property_indices, login_keypad, keypad_size.props_per_key)\n",
|
|
"user = api.customers[customer_id].users[username]\n",
|
|
"mask = user.cipher.decode_base64_str(user.enciphered_passcode.mask)\n",
|
|
"ordered_user_position_key = mask ^ user.cipher.mask_key\n",
|
|
"user_position_key = customer.cipher.position_key ^ user.cipher.combined_position_key"
|
|
],
|
|
"outputs": [],
|
|
"execution_count": 19
|
|
},
|
|
{
|
|
"metadata": {},
|
|
"cell_type": "markdown",
|
|
"source": [
|
|
"#### Get Presumed Properties\n",
|
|
"- Get the passcode position indices (within the keys)\n",
|
|
"- Get the presumed property indices from the key and position within the key"
|
|
]
|
|
},
|
|
{
|
|
"metadata": {
|
|
"ExecuteTime": {
|
|
"end_time": "2025-03-24T09:48:11.750757Z",
|
|
"start_time": "2025-03-24T09:48:11.748661Z"
|
|
}
|
|
},
|
|
"cell_type": "code",
|
|
"source": [
|
|
"passcode_position_indices = [int(np.where(user_position_key == pos)[0][0]) for pos in ordered_user_position_key[:passcode_len]]\n",
|
|
"presumed_property_indices = customer.users[username].user_keypad.get_prop_idxs_by_keynumb_setidx(selected_keys_login, passcode_position_indices)\n",
|
|
"assert passcode_property_indices == presumed_property_indices\n"
|
|
],
|
|
"outputs": [],
|
|
"execution_count": 20
|
|
},
|
|
{
|
|
"metadata": {},
|
|
"cell_type": "markdown",
|
|
"source": "### Compare Enciphered Passcodes\n"
|
|
},
|
|
{
|
|
"metadata": {
|
|
"ExecuteTime": {
|
|
"end_time": "2025-03-24T09:48:11.995883Z",
|
|
"start_time": "2025-03-24T09:48:11.760909Z"
|
|
}
|
|
},
|
|
"cell_type": "code",
|
|
"source": [
|
|
"valid_nkode = user.cipher.compare_nkode(presumed_property_indices, customer.cipher, user.enciphered_passcode.code)\n",
|
|
"assert valid_nkode"
|
|
],
|
|
"outputs": [],
|
|
"execution_count": 21
|
|
},
|
|
{
|
|
"metadata": {},
|
|
"cell_type": "markdown",
|
|
"source": [
|
|
"## Renew Properties\n",
|
|
"1. Renew Customer Properties\n",
|
|
"2. Renew User Keys\n",
|
|
"3. Refresh User on Login\n",
|
|
"\n"
|
|
]
|
|
},
|
|
{
|
|
"metadata": {
|
|
"ExecuteTime": {
|
|
"end_time": "2025-03-24T09:48:12.479529Z",
|
|
"start_time": "2025-03-24T09:48:12.009222Z"
|
|
}
|
|
},
|
|
"cell_type": "code",
|
|
"source": [
|
|
"def print_user_enciphered_code():\n",
|
|
" mask = api.customers[customer_id].users[username].enciphered_passcode.mask\n",
|
|
" code = api.customers[customer_id].users[username].enciphered_passcode.code\n",
|
|
" print(f\"mask: {mask}, code: {code}\\n\")\n",
|
|
"\n",
|
|
"print(\"Old User Cipher and Mask\")\n",
|
|
"print_user_enciphered_code()\n",
|
|
"api.renew_keys(customer_id) # Steps 1 and 2\n",
|
|
"login_keypad = api.get_login_keypad(username, customer_id)\n",
|
|
"selected_keys_login = select_keys_with_passcode_values(passcode_property_indices, login_keypad, keypad_size.props_per_key)\n",
|
|
"success = api.login(customer_id, username, selected_keys_login) # Step 3\n",
|
|
"print(\"New User Cipher and Mask\")\n",
|
|
"print_user_enciphered_code()\n",
|
|
"assert success"
|
|
],
|
|
"outputs": [
|
|
{
|
|
"name": "stdout",
|
|
"output_type": "stream",
|
|
"text": [
|
|
"Old User Cipher and Mask\n",
|
|
"mask: nheBuPsWD2zInvscNhsJO6Wy0kU=, code: $2b$12$bsV3i1BsLH6nHCZOPVHns.b1ARmpuJETxFPZohcPG2OKO9Mr3B1du\n",
|
|
"\n",
|
|
"New User Cipher and Mask\n",
|
|
"mask: ionSnD9+/0DS5ul8+wMyi3PNCRA=, code: $2b$12$MZejDYT1GDoyE0w1TdFGCedyBD4BY2n6VjLQW73TwJPLyjiimdpA2\n",
|
|
"\n"
|
|
]
|
|
}
|
|
],
|
|
"execution_count": 22
|
|
},
|
|
{
|
|
"metadata": {},
|
|
"cell_type": "markdown",
|
|
"source": [
|
|
"### Renew Customer Keys\n",
|
|
"The customer cipher keys are replaced."
|
|
]
|
|
},
|
|
{
|
|
"metadata": {
|
|
"ExecuteTime": {
|
|
"end_time": "2025-03-24T09:48:12.490144Z",
|
|
"start_time": "2025-03-24T09:48:12.486157Z"
|
|
}
|
|
},
|
|
"cell_type": "code",
|
|
"source": [
|
|
"old_props = customer.cipher.property_key.copy()\n",
|
|
"old_pos = customer.cipher.position_key.copy()\n",
|
|
"customer.cipher.property_key = np.random.choice(2 ** 16, size=keypad_size.total_props, replace=False)\n",
|
|
"customer.cipher.position_key = np.random.choice(2 ** 16, size=keypad_size.props_per_key, replace=False)\n",
|
|
"new_props = customer.cipher.property_key\n",
|
|
"new_pos = customer.cipher.position_key"
|
|
],
|
|
"outputs": [],
|
|
"execution_count": 23
|
|
},
|
|
{
|
|
"metadata": {},
|
|
"cell_type": "markdown",
|
|
"source": [
|
|
"### Renew User\n",
|
|
"User property and position keys go through an intermediate phase.\n",
|
|
"#### user.cipher.combined_position_key\n",
|
|
"- user_combined_position_key = user_combined_position_key XOR pos_xor\n",
|
|
"- user_combined_position_key = (user_position_key XOR old_customer_position_key) XOR (old_customer_position_key XOR new_customer_position_key)\n",
|
|
"- user_combined_position_key = user_position_key XOR new_customer_position_key\n",
|
|
"#### user.cipher.combined_position_key\n",
|
|
"- user_property_key = user_property_key XOR props_xor\n",
|
|
"- user_property_key = user_property_key XOR old_customer_property_key XOR new_customer_property_key\n"
|
|
]
|
|
},
|
|
{
|
|
"metadata": {
|
|
"ExecuteTime": {
|
|
"end_time": "2025-03-24T09:48:12.503462Z",
|
|
"start_time": "2025-03-24T09:48:12.501409Z"
|
|
}
|
|
},
|
|
"cell_type": "code",
|
|
"source": [
|
|
"props_xor = new_props ^ old_props\n",
|
|
"pos_xor = new_pos ^ old_pos\n",
|
|
"for user in customer.users.values():\n",
|
|
" user.renew = True\n",
|
|
" user.cipher.combined_position_key = user.cipher.combined_position_key ^ pos_xor\n",
|
|
" user.cipher.property_key = user.cipher.property_key ^ props_xor"
|
|
],
|
|
"outputs": [],
|
|
"execution_count": 24
|
|
},
|
|
{
|
|
"metadata": {},
|
|
"cell_type": "markdown",
|
|
"source": [
|
|
"### Refresh User Keys\n",
|
|
"After a user's first successful login, the renew flag is checked. If it's true, the user's cipher is replaced with a new cipher."
|
|
]
|
|
},
|
|
{
|
|
"metadata": {
|
|
"ExecuteTime": {
|
|
"end_time": "2025-03-24T09:48:12.759002Z",
|
|
"start_time": "2025-03-24T09:48:12.522251Z"
|
|
}
|
|
},
|
|
"cell_type": "code",
|
|
"source": [
|
|
"if user.renew:\n",
|
|
" user.cipher = UserCipher.create(\n",
|
|
" customer.cipher.keypad_size,\n",
|
|
" customer.cipher.position_key,\n",
|
|
" user.cipher.max_nkode_len\n",
|
|
" )\n",
|
|
" user.enciphered_passcode = user.cipher.encipher_nkode(presumed_property_indices, customer.cipher)\n",
|
|
" user.renew = False"
|
|
],
|
|
"outputs": [],
|
|
"execution_count": 25
|
|
}
|
|
],
|
|
"metadata": {
|
|
"kernelspec": {
|
|
"display_name": "Python 3",
|
|
"language": "python",
|
|
"name": "python3"
|
|
},
|
|
"language_info": {
|
|
"codemirror_mode": {
|
|
"name": "ipython",
|
|
"version": 2
|
|
},
|
|
"file_extension": ".py",
|
|
"mimetype": "text/x-python",
|
|
"name": "python",
|
|
"nbconvert_exporter": "python",
|
|
"pygments_lexer": "ipython2",
|
|
"version": "2.7.6"
|
|
}
|
|
},
|
|
"nbformat": 4,
|
|
"nbformat_minor": 0
|
|
}
|