├── .gitignore
├── README.md
├── package.json
├── public
    ├── favicon.ico
    ├── index.html
    ├── logo192.png
    ├── logo512.png
    ├── manifest.json
    └── robots.txt
├── src
    ├── App.css
    ├── App.js
    ├── App.test.js
    ├── components
    │   ├── Chat.js
    │   ├── EncryptedMessage.js
    │   ├── EncryptedMessageInput.js
    │   ├── KeyDeriver.js
    │   ├── Recipient.js
    │   └── Sender.js
    ├── index.css
    ├── index.js
    ├── lib
    │   ├── chatClient.js
    │   ├── decrypt.js
    │   ├── deriveKey.js
    │   ├── encrypt.js
    │   ├── generateKeyPair.js
    │   └── setUser.js
    ├── logo.svg
    ├── serviceWorker.js
    └── setupTests.js
└── yarn.lock


/.gitignore:
--------------------------------------------------------------------------------
 1 | # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
 2 | 
 3 | # dependencies
 4 | /node_modules
 5 | /.pnp
 6 | .pnp.js
 7 | 
 8 | # testing
 9 | /coverage
10 | 
11 | # production
12 | /build
13 | 
14 | # misc
15 | .DS_Store
16 | .env.local
17 | .env.development.local
18 | .env.test.local
19 | .env.production.local
20 | 
21 | npm-debug.log*
22 | yarn-debug.log*
23 | yarn-error.log*
24 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # 🔐💬 Encrypted Web Chat  [![](https://img.shields.io/twitter/url?url=https%3A%2F%2Fgithub.com%2FGetStream%2Fencrypted-web-chat)](https://twitter.com/intent/tweet?text=Want%20to%20secure%20your%20web%20chat%20app%20with%20the%20Web%20Crypto%20API%3F%20Learn%20how%3A&url=https%3A%2F%2Fgithub.com%2FGetStream%2Fencrypted-web-chat)
 2 | 
 3 | <img align="right" src="https://i.imgur.com/lqSXw3K.gif" width="50%" />
 4 | 
 5 | ## 📚 Tutorial
 6 | 
 7 | This repository contains the completed React project following the [End-to-End Encrypted Chat with the Web Crypto API](https://getstream.io/blog/web-crypto-api-chat/) tutorial. You should read it before trying to run this project as it contains it may contain useful information not present in this README.
 8 | 
 9 | ## ⚙️ Setup
10 | 
11 | ## Requirements
12 | - [Yarn](https://yarnpkg.com/)
13 | - A [Stream](https://getstream.io/accounts/signup/) account.
14 | 
15 | ### Configuration
16 | 
17 | You should place your [Stream Chat](https://getstream.io/chat) credentials in [`src/lib/chatClient.js`](src/lib/chatClient.js).
18 | 
19 | ### Dependencies
20 | 
21 | To install the dependencies, use Yarn in the root folder:
22 | 
23 | ```bash
24 | $ yarn install
25 | ```
26 | 
27 | ### Running
28 | 
29 | To run the web app, use Yarn in the root folder:
30 | 
31 | ```bash
32 | $ yarn start
33 | ```
34 | 
35 | ## 🔗 Helpful Links
36 | 
37 | - [W3C: Web Crypto API](https://getstream.io/blog/build-imessage-clone/)
38 | - [MDN: Web Crypto API](https://developer.mozilla.org/en-US/docs/Web/API/Web_Crypto_API)
39 | - [Stream Chat React Tutorial](https://getstream.io/tutorials/react-chat/)
40 | - [Stream Chat React Repo](https://github.com/GetStream/stream-chat-react/)
41 | - [Stream Chat React Docs](https://getstream.io/chat/docs/introduction/?language=js)
42 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "encrypted-web-chat",
 3 |   "version": "0.1.0",
 4 |   "private": true,
 5 |   "dependencies": {
 6 |     "@testing-library/jest-dom": "^4.2.4",
 7 |     "@testing-library/react": "^9.3.2",
 8 |     "@testing-library/user-event": "^7.1.2",
 9 |     "express": "^4.17.1",
10 |     "react": "^16.13.1",
11 |     "react-dom": "^16.13.1",
12 |     "react-scripts": "3.4.3",
13 |     "stream-chat": "^2.4.0",
14 |     "stream-chat-react": "^3.0.0"
15 |   },
16 |   "scripts": {
17 |     "start": "react-scripts start",
18 |     "build": "react-scripts build",
19 |     "test": "react-scripts test",
20 |     "eject": "react-scripts eject"
21 |   },
22 |   "eslintConfig": {
23 |     "extends": "react-app"
24 |   },
25 |   "browserslist": {
26 |     "production": [
27 |       ">0.2%",
28 |       "not dead",
29 |       "not op_mini all"
30 |     ],
31 |     "development": [
32 |       "last 1 chrome version",
33 |       "last 1 firefox version",
34 |       "last 1 safari version"
35 |     ]
36 |   }
37 | }
38 | 


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/public/favicon.ico:
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https://raw.githubusercontent.com/GetStream/encrypted-web-chat/f2b14a29bffc837b6e05353c91cd8d30b1d4fafe/public/favicon.ico


--------------------------------------------------------------------------------
/public/index.html:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 |   <head>
 4 |     <meta charset="utf-8" />
 5 |     <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
 6 |     <meta name="viewport" content="width=device-width, initial-scale=1" />
 7 |     <meta name="theme-color" content="#000000" />
 8 |     <meta
 9 |       name="description"
10 |       content="Web site created using create-react-app"
11 |     />
12 |     <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
13 |     <!--
14 |       manifest.json provides metadata used when your web app is installed on a
15 |       user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
16 |     -->
17 |     <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
18 |     <!--
19 |       Notice the use of %PUBLIC_URL% in the tags above.
20 |       It will be replaced with the URL of the `public` folder during the build.
21 |       Only files inside the `public` folder can be referenced from the HTML.
22 | 
23 |       Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
24 |       work correctly both with client-side routing and a non-root public URL.
25 |       Learn how to configure a non-root public URL by running `npm run build`.
26 |     -->
27 |     <title>React App</title>
28 |   </head>
29 |   <body>
30 |     <noscript>You need to enable JavaScript to run this app.</noscript>
31 |     <div id="root"></div>
32 |     <!--
33 |       This HTML file is a template.
34 |       If you open it directly in the browser, you will see an empty page.
35 | 
36 |       You can add webfonts, meta tags, or analytics to this file.
37 |       The build step will place the bundled scripts into the <body> tag.
38 | 
39 |       To begin the development, run `npm start` or `yarn start`.
40 |       To create a production bundle, use `npm run build` or `yarn build`.
41 |     -->
42 |   </body>
43 | </html>
44 | 


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/public/logo192.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/GetStream/encrypted-web-chat/f2b14a29bffc837b6e05353c91cd8d30b1d4fafe/public/logo192.png


--------------------------------------------------------------------------------
/public/logo512.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/GetStream/encrypted-web-chat/f2b14a29bffc837b6e05353c91cd8d30b1d4fafe/public/logo512.png


--------------------------------------------------------------------------------
/public/manifest.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "short_name": "React App",
 3 |   "name": "Create React App Sample",
 4 |   "icons": [
 5 |     {
 6 |       "src": "favicon.ico",
 7 |       "sizes": "64x64 32x32 24x24 16x16",
 8 |       "type": "image/x-icon"
 9 |     },
10 |     {
11 |       "src": "logo192.png",
12 |       "type": "image/png",
13 |       "sizes": "192x192"
14 |     },
15 |     {
16 |       "src": "logo512.png",
17 |       "type": "image/png",
18 |       "sizes": "512x512"
19 |     }
20 |   ],
21 |   "start_url": ".",
22 |   "display": "standalone",
23 |   "theme_color": "#000000",
24 |   "background_color": "#ffffff"
25 | }
26 | 


--------------------------------------------------------------------------------
/public/robots.txt:
--------------------------------------------------------------------------------
1 | # https://www.robotstxt.org/robotstxt.html
2 | User-agent: *
3 | Disallow:
4 | 


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/src/App.css:
--------------------------------------------------------------------------------
 1 | .App {
 2 |   text-align: center;
 3 | }
 4 | 
 5 | .App-logo {
 6 |   height: 40vmin;
 7 |   pointer-events: none;
 8 | }
 9 | 
10 | @media (prefers-reduced-motion: no-preference) {
11 |   .App-logo {
12 |     animation: App-logo-spin infinite 20s linear;
13 |   }
14 | }
15 | 
16 | .App-header {
17 |   background-color: #282c34;
18 |   min-height: 100vh;
19 |   display: flex;
20 |   flex-direction: column;
21 |   align-items: center;
22 |   justify-content: center;
23 |   font-size: calc(10px + 2vmin);
24 |   color: white;
25 | }
26 | 
27 | .App-link {
28 |   color: #61dafb;
29 | }
30 | 
31 | @keyframes App-logo-spin {
32 |   from {
33 |     transform: rotate(0deg);
34 |   }
35 |   to {
36 |     transform: rotate(360deg);
37 |   }
38 | }
39 | 


--------------------------------------------------------------------------------
/src/App.js:
--------------------------------------------------------------------------------
 1 | import React, { useEffect, useState } from "react";
 2 | import "./App.css";
 3 | import Chat from "./components/Chat";
 4 | import Sender from "./components/Sender";
 5 | import Recipient from "./components/Recipient";
 6 | import KeyDeriver from "./components/KeyDeriver";
 7 | 
 8 | function App() {
 9 |   const [sender, setSender] = useState(null);
10 |   const [recipient, setRecipient] = useState(null);
11 |   const [derivedKey, setDerivedKey] = useState(null);
12 | 
13 |   if (!sender) return <Sender onSubmit={setSender} />;
14 | 
15 |   if (!recipient) return <Recipient onSubmit={setRecipient} />;
16 | 
17 |   if (!derivedKey)
18 |     return (
19 |       <KeyDeriver
20 |         sender={sender}
21 |         recipient={recipient}
22 |         onSubmit={setDerivedKey}
23 |       />
24 |     );
25 | 
26 |   return <Chat sender={sender} recipient={recipient} derivedKey={derivedKey} />;
27 | }
28 | 
29 | export default App;
30 | 


--------------------------------------------------------------------------------
/src/App.test.js:
--------------------------------------------------------------------------------
 1 | import React from "react";
 2 | import { render } from "@testing-library/react";
 3 | import App from "./App";
 4 | 
 5 | test("renders learn react link", () => {
 6 |   const { getByText } = render(<App />);
 7 |   const linkElement = getByText(/learn react/i);
 8 |   expect(linkElement).toBeInTheDocument();
 9 | });
10 | 


--------------------------------------------------------------------------------
/src/components/Chat.js:
--------------------------------------------------------------------------------
 1 | import React, { useEffect, useState, memo } from "react";
 2 | import {
 3 |   Chat,
 4 |   Channel,
 5 |   ChannelHeader,
 6 |   Thread,
 7 |   Window,
 8 |   Message,
 9 | } from "stream-chat-react";
10 | import { MessageList, MessageInput, SendButton } from "stream-chat-react";
11 | 
12 | import chatClient from "../lib/chatClient";
13 | 
14 | import "stream-chat-react/dist/css/index.css";
15 | import EncryptedMessage from "./EncryptedMessage";
16 | import EncryptedMessageInput from "./EncryptedMessageInput";
17 | 
18 | export default (props) => {
19 |   const [channel, setChannel] = useState(null);
20 | 
21 |   useEffect(() => {
22 |     setChannel(
23 |       chatClient.channel("messaging", {
24 |         members: [props.sender.sender, props.recipient.recipient],
25 |       })
26 |     );
27 |   }, [props]);
28 | 
29 |   if (!channel) return <div>Loading...</div>;
30 | 
31 |   return (
32 |     <Chat client={chatClient} theme={"messaging light"}>
33 |       <Channel channel={channel}>
34 |         <Window>
35 |           <ChannelHeader />
36 |           <MessageList
37 |             Message={(e) => (
38 |               <EncryptedMessage {...e} derivedKey={props.derivedKey} />
39 |             )}
40 |           />
41 |           <EncryptedMessageInput derivedKey={props.derivedKey} />
42 |         </Window>
43 |         <Thread />
44 |       </Channel>
45 |     </Chat>
46 |   );
47 | };
48 | 


--------------------------------------------------------------------------------
/src/components/EncryptedMessage.js:
--------------------------------------------------------------------------------
 1 | import React, { useEffect, useState } from "react"
 2 | import { MessageSimple } from "stream-chat-react"
 3 | import decrypt from "../lib/decrypt";
 4 | 
 5 | // builds a message component that decrypts the message with derivedKey
 6 | export default props => {
 7 |     const [message, setMessage] = useState(props.message);
 8 | 
 9 |     useEffect(() => {
10 |         const work = async () => {
11 |             setMessage({
12 |                 ...message,
13 |                 text: await decrypt(props.message.text, props.derivedKey)
14 |             })
15 |         }
16 |         
17 |         work()
18 |     }, [props])
19 | 
20 |     return (
21 |         <MessageSimple { ...{...props, message }} />
22 |     )
23 | }


--------------------------------------------------------------------------------
/src/components/EncryptedMessageInput.js:
--------------------------------------------------------------------------------
 1 | import React, { useContext } from "react";
 2 | import { MessageInputLarge, ChannelContext } from "stream-chat-react";
 3 | import encrypt from "../lib/encrypt";
 4 | 
 5 | export default (props) => {
 6 |   const channelContext = useContext(ChannelContext);
 7 |   const sendMessage = async (message, channelCid) => {
 8 |     const newMessage = {
 9 |       ...message,
10 |       text: await encrypt(message.text, props.derivedKey),
11 |     };
12 | 
13 |     await channelContext.channel.sendMessage(newMessage);
14 |   };
15 | 
16 |   return <MessageInputLarge overrideSubmitHandler={sendMessage} {...props} />;
17 | };
18 | 


--------------------------------------------------------------------------------
/src/components/KeyDeriver.js:
--------------------------------------------------------------------------------
 1 | import React, { useEffect, useState } from "react";
 2 | import deriveKey from "../lib/deriveKey";
 3 | 
 4 | export default (props) => {
 5 |   const { sender, recipient, onSubmit } = props;
 6 |   const [error, setError] = useState("");
 7 | 
 8 |   useEffect(() => {
 9 |     const derive = async () => {
10 |       try {
11 |         const derivedKey = await deriveKey(
12 |           recipient.publicKeyJwk,
13 |           sender.keyPair.privateKeyJwk
14 |         );
15 |         onSubmit(derivedKey);
16 |       } catch (e) {
17 |         setError(e.message);
18 |       }
19 |     };
20 | 
21 |     derive();
22 |   }, [sender, recipient]);
23 | 
24 |   return (
25 |     <div>
26 |       <p>Deriving key...</p>
27 |       <p>{error}</p>
28 |     </div>
29 |   );
30 | };
31 | 


--------------------------------------------------------------------------------
/src/components/Recipient.js:
--------------------------------------------------------------------------------
 1 | import React, { useState } from "react";
 2 | import chatClient from "../lib/chatClient";
 3 | 
 4 | export default (props) => {
 5 |   const [recipient, setRecipient] = useState("");
 6 |   const [error, setError] = useState("");
 7 | 
 8 |   const handleClick = () => {
 9 |     const logIn = async () => {
10 |       try {
11 |         const usersQuery = await chatClient.queryUsers({ id: recipient });
12 | 
13 |         if (usersQuery.users.length > 0) {
14 |           const publicKeyJwk = JSON.parse(usersQuery.users[0].publicKeyJwk);
15 |           props.onSubmit({ recipient, publicKeyJwk });
16 |         } else {
17 |           setError(
18 |             "This user is not registered. Open a new tab and create it? :)"
19 |           );
20 |         }
21 |       } catch (e) {
22 |         setError(`Error setting recipient: ${e.message}`);
23 |       }
24 |     };
25 | 
26 |     logIn();
27 |   };
28 | 
29 |   return (
30 |     <div>
31 |       <p>Who do you want to chat with?</p>
32 |       <input value={recipient} onChange={(e) => setRecipient(e.target.value)} />
33 |       <br />
34 |       <br />
35 |       <button onClick={handleClick}>Submit</button>
36 |       <p>{error}</p>
37 |     </div>
38 |   );
39 | };
40 | 


--------------------------------------------------------------------------------
/src/components/Sender.js:
--------------------------------------------------------------------------------
 1 | import React, { useState } from "react";
 2 | import setUser from "../lib/setUser";
 3 | import generateKeyPair from "../lib/generateKeyPair";
 4 | 
 5 | export default (props) => {
 6 |   const [keyPair, setKeyPair] = useState(null);
 7 |   const [sender, setSender] = useState("");
 8 |   const [error, setError] = useState("");
 9 | 
10 |   const handleKeyPairInputChange = (e) => {
11 |     try {
12 |       const keyPair = JSON.parse(e.target.value);
13 |       setKeyPair(keyPair);
14 |     } catch (e) {
15 |       setError(`Error reading key pair: ${e}`);
16 |       setKeyPair(keyPair);
17 |     }
18 |   };
19 | 
20 |   const handleGenerateClick = async () => {
21 |     setKeyPair(await generateKeyPair());
22 |   };
23 | 
24 |   const handleSubmit = () => {
25 |     const work = async () => {
26 |       try {
27 |         await setUser(sender, keyPair);
28 |         props.onSubmit({ sender, keyPair });
29 |       } catch (e) {
30 |         setError(`Error logging in: ${e}`);
31 |       }
32 |     };
33 | 
34 |     work();
35 |   };
36 | 
37 |   return (
38 |     <div>
39 |       <p>What is your id?</p>
40 |       <input value={sender} onChange={(e) => setSender(e.target.value)} />
41 |       <p>Avoid spaces and special characters.</p>
42 |       <p>
43 |         Paste your key pair below or <button onClick={handleGenerateClick}>generate</button> a new one.
44 |       </p>
45 |       <input
46 |         value={JSON.stringify(keyPair)}
47 |         onChange={handleKeyPairInputChange}
48 |       />
49 |       <p>
50 |         You need to save this key pair somewhere safe if you want to log in with
51 |         the same user id later.
52 |       </p>
53 |       <button onClick={handleSubmit}>Submit</button>
54 |       <p>{error}</p>
55 |     </div>
56 |   );
57 | };
58 | 


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/src/index.css:
--------------------------------------------------------------------------------
 1 | body {
 2 |   margin: 0;
 3 |   font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
 4 |     "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
 5 |     sans-serif;
 6 |   -webkit-font-smoothing: antialiased;
 7 |   -moz-osx-font-smoothing: grayscale;
 8 |   padding-left: 10px;
 9 |   max-width: 600px;
10 | }
11 | 
12 | code {
13 |   font-family: source-code-pro, Menlo, Monaco, Consolas, "Courier New",
14 |     monospace;
15 | }
16 | 


--------------------------------------------------------------------------------
/src/index.js:
--------------------------------------------------------------------------------
 1 | import React from "react";
 2 | import ReactDOM from "react-dom";
 3 | import "./index.css";
 4 | import App from "./App";
 5 | import * as serviceWorker from "./serviceWorker";
 6 | 
 7 | ReactDOM.render(
 8 |   <React.StrictMode>
 9 |     <App />
10 |   </React.StrictMode>,
11 |   document.getElementById("root")
12 | );
13 | 
14 | // If you want your app to work offline and load faster, you can change
15 | // unregister() to register() below. Note this comes with some pitfalls.
16 | // Learn more about service workers: https://bit.ly/CRA-PWA
17 | serviceWorker.unregister();
18 | 


--------------------------------------------------------------------------------
/src/lib/chatClient.js:
--------------------------------------------------------------------------------
1 | import { StreamChat } from "stream-chat";
2 | 
3 | export default new StreamChat("[api_key]");
4 | 


--------------------------------------------------------------------------------
/src/lib/decrypt.js:
--------------------------------------------------------------------------------
 1 | export default async (text, derivedKey) => {
 2 |   try {
 3 |     const string = atob(text);
 4 |     const uintArray = new Uint8Array(
 5 |       [...string].map((char) => char.charCodeAt(0))
 6 |     );
 7 |     const algorithm = {
 8 |       name: "AES-GCM",
 9 |       iv: new TextEncoder().encode("Initialization Vector"),
10 |     };
11 |     const decryptedData = await window.crypto.subtle.decrypt(
12 |       algorithm,
13 |       derivedKey,
14 |       uintArray
15 |     );
16 | 
17 |     return new TextDecoder().decode(decryptedData);
18 |   } catch (e) {
19 |     return `error decrypting message: ${e}`;
20 |   }
21 | };
22 | 


--------------------------------------------------------------------------------
/src/lib/deriveKey.js:
--------------------------------------------------------------------------------
 1 | export default async (publicKeyJwk, privateKeyJwk) => {
 2 |   const publicKey = await window.crypto.subtle.importKey(
 3 |     "jwk",
 4 |     publicKeyJwk,
 5 |     {
 6 |       name: "ECDH",
 7 |       namedCurve: "P-256",
 8 |     },
 9 |     true,
10 |     []
11 |   );
12 | 
13 |   const privateKey = await window.crypto.subtle.importKey(
14 |     "jwk",
15 |     privateKeyJwk,
16 |     {
17 |       name: "ECDH",
18 |       namedCurve: "P-256",
19 |     },
20 |     true,
21 |     ["deriveKey", "deriveBits"]
22 |   );
23 | 
24 |   return await window.crypto.subtle.deriveKey(
25 |     { name: "ECDH", public: publicKey },
26 |     privateKey,
27 |     { name: "AES-GCM", length: 256 },
28 |     true,
29 |     ["encrypt", "decrypt"]
30 |   );
31 | };
32 | 


--------------------------------------------------------------------------------
/src/lib/encrypt.js:
--------------------------------------------------------------------------------
 1 | export default async (text, derivedKey) => {
 2 |   const encodedText = new TextEncoder().encode(text);
 3 | 
 4 |   const encryptedData = await window.crypto.subtle.encrypt(
 5 |     { name: "AES-GCM", iv: new TextEncoder().encode("Initialization Vector") },
 6 |     derivedKey,
 7 |     encodedText
 8 |   );
 9 | 
10 |   const uintArray = new Uint8Array(encryptedData);
11 | 
12 |   const string = String.fromCharCode.apply(null, uintArray);
13 | 
14 |   const base64Data = btoa(string);
15 | 
16 |   return base64Data;
17 | };
18 | 


--------------------------------------------------------------------------------
/src/lib/generateKeyPair.js:
--------------------------------------------------------------------------------
 1 | export default async () => {
 2 |   const keyPair = await window.crypto.subtle.generateKey(
 3 |     {
 4 |       name: "ECDH",
 5 |       namedCurve: "P-256",
 6 |     },
 7 |     true,
 8 |     ["deriveKey", "deriveBits"]
 9 |   );
10 | 
11 |   const publicKeyJwk = await window.crypto.subtle.exportKey(
12 |     "jwk",
13 |     keyPair.publicKey
14 |   );
15 | 
16 |   const privateKeyJwk = await window.crypto.subtle.exportKey(
17 |     "jwk",
18 |     keyPair.privateKey
19 |   );
20 | 
21 |   return { publicKeyJwk, privateKeyJwk };
22 | };
23 | 


--------------------------------------------------------------------------------
/src/lib/setUser.js:
--------------------------------------------------------------------------------
 1 | import chatClient from "./chatClient";
 2 | 
 3 | export default async (id, keyPair) => {
 4 |   const response = await chatClient.setUser(
 5 |     {
 6 |       id,
 7 |       name: id,
 8 |       image: `https://getstream.io/random_png/?id=cool-recipe-9&name=${id}`,
 9 |     },
10 |     chatClient.devToken(id)
11 |   );
12 | 
13 |   if (
14 |     response.me?.publicKeyJwk &&
15 |     response.me.publicKeyJwk != JSON.stringify(keyPair.publicKeyJwk)
16 |   ) {
17 |     await chatClient.disconnect();
18 |     throw "This user id already exists with a different key pair. Choose a new user id or paste the correct key pair.";
19 |   }
20 | 
21 |   await chatClient.upsertUsers([
22 |     { id, publicKeyJwk: JSON.stringify(keyPair.publicKeyJwk) },
23 |   ]);
24 | };
25 | 


--------------------------------------------------------------------------------
/src/logo.svg:
--------------------------------------------------------------------------------
1 | <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3">
2 |     <g fill="#61DAFB">
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7 | </svg>
8 | 


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/src/serviceWorker.js:
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  1 | // This optional code is used to register a service worker.
  2 | // register() is not called by default.
  3 | 
  4 | // This lets the app load faster on subsequent visits in production, and gives
  5 | // it offline capabilities. However, it also means that developers (and users)
  6 | // will only see deployed updates on subsequent visits to a page, after all the
  7 | // existing tabs open on the page have been closed, since previously cached
  8 | // resources are updated in the background.
  9 | 
 10 | // To learn more about the benefits of this model and instructions on how to
 11 | // opt-in, read https://bit.ly/CRA-PWA
 12 | 
 13 | const isLocalhost = Boolean(
 14 |   window.location.hostname === "localhost" ||
 15 |     // [::1] is the IPv6 localhost address.
 16 |     window.location.hostname === "[::1]" ||
 17 |     // 127.0.0.0/8 are considered localhost for IPv4.
 18 |     window.location.hostname.match(
 19 |       /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
 20 |     )
 21 | );
 22 | 
 23 | export function register(config) {
 24 |   if (process.env.NODE_ENV === "production" && "serviceWorker" in navigator) {
 25 |     // The URL constructor is available in all browsers that support SW.
 26 |     const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href);
 27 |     if (publicUrl.origin !== window.location.origin) {
 28 |       // Our service worker won't work if PUBLIC_URL is on a different origin
 29 |       // from what our page is served on. This might happen if a CDN is used to
 30 |       // serve assets; see https://github.com/facebook/create-react-app/issues/2374
 31 |       return;
 32 |     }
 33 | 
 34 |     window.addEventListener("load", () => {
 35 |       const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
 36 | 
 37 |       if (isLocalhost) {
 38 |         // This is running on localhost. Let's check if a service worker still exists or not.
 39 |         checkValidServiceWorker(swUrl, config);
 40 | 
 41 |         // Add some additional logging to localhost, pointing developers to the
 42 |         // service worker/PWA documentation.
 43 |         navigator.serviceWorker.ready.then(() => {
 44 |           console.log(
 45 |             "This web app is being served cache-first by a service " +
 46 |               "worker. To learn more, visit https://bit.ly/CRA-PWA"
 47 |           );
 48 |         });
 49 |       } else {
 50 |         // Is not localhost. Just register service worker
 51 |         registerValidSW(swUrl, config);
 52 |       }
 53 |     });
 54 |   }
 55 | }
 56 | 
 57 | function registerValidSW(swUrl, config) {
 58 |   navigator.serviceWorker
 59 |     .register(swUrl)
 60 |     .then((registration) => {
 61 |       registration.onupdatefound = () => {
 62 |         const installingWorker = registration.installing;
 63 |         if (installingWorker == null) {
 64 |           return;
 65 |         }
 66 |         installingWorker.onstatechange = () => {
 67 |           if (installingWorker.state === "installed") {
 68 |             if (navigator.serviceWorker.controller) {
 69 |               // At this point, the updated precached content has been fetched,
 70 |               // but the previous service worker will still serve the older
 71 |               // content until all client tabs are closed.
 72 |               console.log(
 73 |                 "New content is available and will be used when all " +
 74 |                   "tabs for this page are closed. See https://bit.ly/CRA-PWA."
 75 |               );
 76 | 
 77 |               // Execute callback
 78 |               if (config && config.onUpdate) {
 79 |                 config.onUpdate(registration);
 80 |               }
 81 |             } else {
 82 |               // At this point, everything has been precached.
 83 |               // It's the perfect time to display a
 84 |               // "Content is cached for offline use." message.
 85 |               console.log("Content is cached for offline use.");
 86 | 
 87 |               // Execute callback
 88 |               if (config && config.onSuccess) {
 89 |                 config.onSuccess(registration);
 90 |               }
 91 |             }
 92 |           }
 93 |         };
 94 |       };
 95 |     })
 96 |     .catch((error) => {
 97 |       console.error("Error during service worker registration:", error);
 98 |     });
 99 | }
100 | 
101 | function checkValidServiceWorker(swUrl, config) {
102 |   // Check if the service worker can be found. If it can't reload the page.
103 |   fetch(swUrl, {
104 |     headers: { "Service-Worker": "script" },
105 |   })
106 |     .then((response) => {
107 |       // Ensure service worker exists, and that we really are getting a JS file.
108 |       const contentType = response.headers.get("content-type");
109 |       if (
110 |         response.status === 404 ||
111 |         (contentType != null && contentType.indexOf("javascript") === -1)
112 |       ) {
113 |         // No service worker found. Probably a different app. Reload the page.
114 |         navigator.serviceWorker.ready.then((registration) => {
115 |           registration.unregister().then(() => {
116 |             window.location.reload();
117 |           });
118 |         });
119 |       } else {
120 |         // Service worker found. Proceed as normal.
121 |         registerValidSW(swUrl, config);
122 |       }
123 |     })
124 |     .catch(() => {
125 |       console.log(
126 |         "No internet connection found. App is running in offline mode."
127 |       );
128 |     });
129 | }
130 | 
131 | export function unregister() {
132 |   if ("serviceWorker" in navigator) {
133 |     navigator.serviceWorker.ready
134 |       .then((registration) => {
135 |         registration.unregister();
136 |       })
137 |       .catch((error) => {
138 |         console.error(error.message);
139 |       });
140 |   }
141 | }
142 | 


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/src/setupTests.js:
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1 | // jest-dom adds custom jest matchers for asserting on DOM nodes.
2 | // allows you to do things like:
3 | // expect(element).toHaveTextContent(/react/i)
4 | // learn more: https://github.com/testing-library/jest-dom
5 | import "@testing-library/jest-dom/extend-expect";
6 | 


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