crypto library for encrypting passwords

app/db.js

@@ -27,6 +27,7 @@ async function isUserExists(username) {
     }
 }
 
+// function for signup
 // function for putting user data to database
 async function insertUser(username, password){
     const query = `

index.js

@@ -5,6 +5,10 @@ const { client } = require('./app/db');
 const port = 3000
 const app = express()
 const { insertUser, isUserExists, loginUser } = require('./app/db');
+const crypto = require('crypto');
+const algorithm = 'aes-256-cbc';
+const key = process.env.ENCRYPT_KEY;
+
 require('dotenv').config()
 
 //TODO change password option will be cool
@@ -35,12 +39,14 @@ app.post('/auth/signup', async (req, res) => {
     let password = req.body.password.trim();
 
     try {
+        // check if user exists
         const exists = await isUserExists(username);
         if (exists) {
             console.log('User already exists');
             res.status(500).send('User already exists!');
             return;
         }
+         // put user data to database
         await insertUser(username, password);
         res.status(200).send("Account successfully created <a href=/login>Login screen</a>");
     } catch (err) {
@@ -49,10 +55,12 @@ app.post('/auth/signup', async (req, res) => {
     }
 });
 
+// serving the login page
 app.get('/login', (req, res) => {
     res.sendFile(path.join(__dirname, '/public/routes/login.html'));
 })
 
+// serving the signup page
 app.get('/signup', (req, res) => {
     res.sendFile(path.join(__dirname, '/public/routes/signup.html'));
 })
@@ -60,7 +68,7 @@ app.get('/signup', (req, res) => {
 app.get('/', (req, res) => {
     res.sendFile(path.join(__dirname, '/public/routes/index.html'));
 })
-
+// run server
 app.listen(port, () => {
     console.log(`Example app listening on port ${port}`)
 })

package.json

@@ -8,6 +8,7 @@
   },
   "private": true,
   "dependencies": {
+    "crypto": "^1.0.1",
     "dotenv": "^16.4.5",
     "express": "^4.19.2",
     "express-session": "^1.18.0",