thomaskonrad

export default class RandomGenerator {
  public static generateRandomBytes(length: number): Uint8Array {
    return crypto.getRandomValues(new Uint8Array(length));
  }

  public static generateRandomNumber(min: number, max: number): number {
    const range = max - min;
    const maxGeneratedValue = 0xFFFFFFFF;
    const possibleResultValues = range + 1;
    const possibleGeneratedValues = maxGeneratedValue + 1;

thomaskonrad

import { Crypto } from '@peculiar/webcrypto';
import RandomGenerator from '@/crypto/RandomGenerator';

Object.defineProperty(window, 'crypto', {
  value: new Crypto(),
});

test('Random generator returns a 16 byte random sequence', () => {
  const randomBytes1 = RandomGenerator.generateRandomBytes(16);
  const randomBytes2 = RandomGenerator.generateRandomBytes(16);

thomaskonrad

export default class AuthenticatedSecretKeyCryptography {
  public static readonly KEY_LENGTH_IN_BYTES = 16;
  public static readonly IV_LENGTH_IN_BYTES = 16;
  public static readonly TAG_LENGTH_IN_BYTES = 16;

  private static readonly ALGORITHM = 'AES-GCM';
  private readonly secretKey: CryptoKey;
  private readonly tagLengthInBytes: number;

  public constructor(secretKey: CryptoKey, tagLengthInBytes = AuthenticatedSecretKeyCryptography.TAG_LENGTH_IN_BYTES) {

thomaskonrad

// This source code is taken from Firefox Send (https://github.com/mozilla/send) and slightly modified.

export default async function splitFile(
  file: File,
  chunkSize: number,
  callback: (chunk: Uint8Array, sequenceNumber: number) => void,
  transformer?: (chunk: Uint8Array, chunkIndex: number) => any,
) {
  const fileSize = file.size;
  let offset = 0;

thomaskonrad

// This source code is taken from Firefox Send (https://github.com/mozilla/send) and slightly modified.

export default async function saveFile(plaintext: ArrayBuffer, fileName: string, fileType: string) {
  return new Promise((resolve, reject) => {
    const dataView = new DataView(plaintext);
    const blob = new Blob([dataView], { type: fileType });

    if (navigator.msSaveBlob) {
      navigator.msSaveBlob(blob, fileName);
      return resolve();

thomaskonrad

// This source code is taken from Firefox Send (https://github.com/mozilla/send) and slightly modified.

export default class StreamSlicer {
  protected chunkSize: number;
  protected partialChunk: Uint8Array;
  protected offset: number;

  constructor(chunkSize: number) {
    this.chunkSize = chunkSize;
    this.partialChunk = new Uint8Array(this.chunkSize);

thomaskonrad

import executeConcurrently from '@/generic/executeConcurrently';

test('Concurrent execution works with decreasing execution time', async () => {
    const numberOfExecutions = 10;

    const resolvedExecutions = await testExecution(
        numberOfExecutions,
        3,
        (counter: number) => Math.ceil(100 / counter),
    );

thomaskonrad

blueprint:
  name: Motion-activated Light with illuminance
  description: Turn on a light when motion is detected and illuminance is below a set Lux level.
  domain: automation
  input:
    action_id:
      name: Action ID
      description: 'That is your Action name in snake case, e.g., "automatic_wc_light".'
      selector:
        text:

thomaskonrad

blueprint:
  name: Motion-activated Fan
  description: A Home Assistant blueprint to automatically turn a fan on and off upon motion
  domain: automation
  input:
    motion_entity:
      name: Motion Sensor
      selector:
        entity:
    fan_target:

thomaskonrad

blueprint:
  name: Automatic Covers
  description: A Home Assistant blueprint to automatically set the cover position depending on the sun position
  domain: automation
  input:
    shutter_automatic_input:
      name: Shutter Automatic Input
      selector:
        entity:
          domain: input_boolean