# exposure-keys [![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0) [![npm version](https://img.shields.io/npm/v/exposure-keys.svg?style=flat)](https://www.npmjs.com/package/exposure-keys)

A library to load Temporary Exposure Keys (TEK). For more information on the format see https://developers.google.com/android/exposure-notifications/exposure-key-file-format.

## Installation

Run `yarn add exposure-keys` or `npm install exposure-keys`.

## Usage

```ts
import * as fs from 'node:fs';
import {loadZip, loadKeys, loadSignature} from 'exposure-keys';

(async () => {
  const zippedData = await fs.promises.readFile('2019-06-24.bin');
  const unzippedData = await loadZip(zippedData);

  const keys = loadKeys(unzippedData.keys);
  const signature = loadSignature(unzippedData.signature);

  // ...
})().catch(error => console.error(error));
```